An asphalt composition detection device for road asphalt paving

Abstract

This invention discloses an asphalt composition testing device for road asphalt pavement, comprising a mixing tank with a mixing mechanism inside, an opening and closing mechanism between the mixing tank and a base, and a testing mechanism inside the testing tank. This invention improves the mixing efficiency of the asphalt composition by activating the mixing mechanism to perform multi-directional mixing. After mixing for a certain period, a solenoid valve is opened, allowing the asphalt mixture inside the mixing tank to enter the testing tank through a connecting pipe. Then, the solenoid valve is closed, and the testing mechanism is activated to detect the viscosity parameters of the asphalt inside the testing tank. If the viscosity parameters do not meet the requirements, mixing continues until the viscosity parameters meet the requirements. Finally, the opening and closing mechanism is activated to unload the asphalt mixture from the mixing tank to the bottom of the base. This device allows for continuous mixing while detecting the viscosity of the asphalt mixture, making it convenient to use.

Description

Technical Field

[0001] This invention relates to the field of road testing technology, specifically to an asphalt composition testing device for road asphalt pavement. Background Technology

[0002] Asphalt composites are made by thoroughly mixing sand materials of several particle sizes and asphalt in a certain proportion under high temperature heating. Asphalt composites are widely used in road paving, waterproof sheets, sound insulation sheets, roofing materials and other applications. Asphalt consistency is one of the main performance indicators of asphalt. It refers to the degree of softness and thinness of asphalt. The higher the asphalt consistency, the thicker it is, that is, the smaller the penetration. The lower the asphalt consistency, the thinner it is, and the larger the penetration.

[0003] Currently, asphalt consistency testing and other process effect testing are often only conducted after asphalt preparation is completed. For example, the degree of mixing of the asphalt composition has a certain impact on the viscosity of the asphalt mixture. If the viscosity of the asphalt is tested after the asphalt composition is mixed, and the viscosity test does not meet the standard, the asphalt composition needs to be mixed again. At this time, the processing efficiency will be affected due to the cessation of mixing during the testing period.

[0004] Therefore, we propose an asphalt composition testing device for road asphalt pavement. Summary of the Invention

[0005] The purpose of this invention is to provide an asphalt composition testing device for road asphalt pavement, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an asphalt composition testing device for road asphalt pavement, comprising a T-shaped base with a circular through hole, a mixing tank with a bottom opening on the side of the base away from the ground, a feed inlet on the mixing tank, the opening of the mixing tank cooperating with the through hole of the base, a mixing mechanism for multi-directional mixing of the asphalt mixture inside the mixing tank, an opening and closing mechanism for controlling the discharge of the asphalt mixture inside the mixing tank between the mixing tank and the base, a testing box on the side wall of the base away from the ground, a discharge port on the testing box, a testing mechanism for detecting the viscosity of the asphalt mixture inside the testing box, a connecting pipe connecting the mixing tank and the testing box, and a solenoid valve on the connecting pipe.

[0007] Preferably, the stirring mechanism includes a first motor connected to the side wall of the mixing tank away from the ground. The output end of the first motor extends into the interior of the mixing tank and is connected to a main stirring shaft. A drive gear is connected to the main stirring shaft inside the mixing tank. A gear ring is connected to the inner wall of the mixing tank. A plurality of inert gears are arranged at equal angles between the drive gear and the gear ring. A rotating plate that cooperates with the plurality of inert gears is connected to the main stirring shaft. A secondary stirring shaft is connected to the rotating plate and the corresponding inert gear. Spiral stirring blades are connected to both the main stirring shaft and the secondary stirring shaft.

[0008] Preferably, the opening and closing mechanism includes a support rod connected inside the mixing tank near the base. A guide groove is formed on the side wall of the support rod facing the base along the length of the support rod. Guide rods are symmetrically connected inside the guide groove. A semi-circular opening and closing plate is connected to the side wall of the guide rod away from the guide groove. Connecting plates are symmetrically connected to both sides of the opening and closing plate. A double-ended screw is connected between the connecting plates on the same side of the two opening and closing plates. The two ends of the double-ended screw pass through the connecting plates on both sides and are connected to a fixing seat. The fixing seat is connected to the base. A second motor is connected to one end of the double-ended screw on one side, and a pulley assembly is connected between the other end and the double-ended screw on the other side. A pulley that contacts the base is provided on the side of the opening and closing plate facing the base.

[0009] Preferably, the detection mechanism includes a third motor connected to the outer wall of the detection box on the side away from the base. The detection box has a horizontal partition inside. The output end of the third motor is connected to a dynamic torque sensor. The other end of the dynamic torque sensor is connected to a load shaft for stirring the asphalt mixture. The dynamic torque sensor is located between the partition inside the detection box and the motor.

[0010] Preferably, the support rod is divided into a triangular part and a rectangular part, with one corner of the triangular part pointing vertically upwards, and the guide groove is located on the rectangular part.

[0011] Preferably, an annular baffle and a circular baffle are provided between the spiral stirring blades and the drive gear inside the mixing tank. The annular baffle and the circular baffle are respectively connected to the inner wall of the mixing tank and the main stirring shaft, and an annular groove is formed between the annular baffle and the circular baffle to cooperate with the auxiliary stirring shaft.

[0012] Preferably, the base opening is connected to a discharge port with an inverted frustum cross-section on the side away from the mixing tank.

[0013] Preferably, the two sides of the opening and closing plates are respectively provided with a matching insert rod and a slot on the opposite side wall.

[0014] Preferably, both the guide rod and the guide groove have a T-shaped cross-section.

[0015] The present invention has at least the following beneficial effects:

[0016] 1. By pouring the asphalt composition into the mixing tank through the inlet, and then starting the mixing mechanism to stir the asphalt composition in multiple directions, the mixing efficiency of the asphalt composition is improved. When the mixing has been going on for a certain period of time, the solenoid valve is opened, and the asphalt mixture inside the mixing tank enters the testing tank through the connecting pipe. Then the solenoid valve is closed, and the testing mechanism is started. The testing mechanism begins to detect the viscosity parameters of the asphalt inside the testing tank. If the viscosity parameters do not meet the requirements, the mixing continues until the viscosity parameters meet the requirements. Then the opening and closing mechanism is opened to unload the asphalt mixture inside the mixing tank to the bottom of the base. This structure can detect the viscosity of the asphalt mixture without interrupting the mixing, and it is easy to use.

[0017] 2. By dividing the support rod into a triangular part and a rectangular part, with one corner of the triangular part pointing vertically upward, the shape design of the support rod can support the movement of the opening and closing plate while reducing the retention of asphalt mixture on the support rod, which is beneficial for unloading. Attached Figure Description

[0018] Figure 1 This is one of the schematic diagrams of the overall three-dimensional structure of the present invention;

[0019] Figure 2 This is the second schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 3 This is one of the schematic diagrams of a partial structure in the main cross-section of the present invention;

[0021] Figure 4 This is a second schematic diagram of a partial structure in the main cross-section of the present invention;

[0022] Figure 5 This is a top view cross-sectional structural diagram of the present invention;

[0023] Figure 6 for Figure 3 Enlarged structural diagram at point A;

[0024] Figure 7 for Figure 2 A schematic diagram of the structure at point B.

[0025] In the diagram: 1-Base; 2-Mixing tank; 3-Detection box; 4-Inlet; 5-Discharge port; 6-Mixing mechanism; 61-First motor; 62-Main stirring shaft; 63-Secondary stirring shaft; 64-Gear ring; 65-Driving gear; 66-Inertial gear; 67-Annular baffle; 68-Circular baffle; 69-Rotating plate; 601-Helical stirring blade; 7-Opening and closing mechanism; 71-Second motor; 72-Double-headed screw; 73-Fixed seat; 74-Connecting plate; 75-Pulley assembly; 76-Opening and closing plate; 77-Guide rod; 78-Guide groove; 79-Support rod; 8-Detection mechanism; 81-Third motor; 82-Baffle; 83-Dynamic torque sensor; 84-Load shaft; 9-Solenoid valve; 10-Connecting pipe; 11-Slot; 12-Insertion rod; 13-Pulley; 14-Annular groove; 15-Discharge port. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-7This invention provides a technical solution: an asphalt composition testing device for road asphalt pavement, comprising a T-shaped base 1 with a circular through hole, a circular mixing tank 2 with a bottom opening on the side of the base 1 away from the ground, a feed inlet 4 fixedly connected to the mixing tank 2, the feed inlet 4 being located above the outer peripheral wall of the mixing tank 2, the bottom opening of the mixing tank 2 matching the through hole of the base 1, specifically, the diameter of the bottom opening of the mixing tank 2 being less than or equal to the diameter of the through hole of the base 1; a mixing mechanism 6 for multi-directional mixing of the asphalt mixture is provided inside the mixing tank 2, and an opening and closing mechanism 7 for controlling the discharge of the asphalt mixture inside the mixing tank 2 from the bottom opening of the mixing tank 2 is provided between the mixing tank 2 and the base 1, the opening and closing mechanism 7 being able to heat the material inside the mixing tank 2 while controlling the material discharge, a testing box 3 is provided on the side wall of the base 1 away from the ground on the side of the mixing tank 2, the testing box 3 being located at the protrusion of the base 1, the testing box 3 having a discharge port 5, and a testing mechanism 8 for detecting the viscosity of the asphalt mixture being provided inside the testing box 3, the mixing tank 2 and the testing box A connecting pipe 10 connects the mixing tank 2 and the testing tank 3, with the two ends of the connecting pipe 10 located at the lower part of the mixing tank 2 and the upper part of the testing tank 3, respectively. A solenoid valve 9 is fixedly connected to the connecting pipe 10. In use, the locking mechanism initially blocks and closes the opening of the mixing tank 2, and the asphalt composition is poured into the mixing tank 2 from the feed port 4. Then, the mixing mechanism 6 is started to stir the asphalt composition in multiple directions to improve the mixing efficiency of the asphalt composition. When stirring for a certain period of time, the solenoid valve 9 is opened, and the asphalt mixture inside the mixing tank 2 enters the testing tank 3 through the connecting pipe 10. Then, the solenoid valve 9 is closed, and the testing mechanism 8 is started. The testing mechanism 8 starts to detect the viscosity parameters of the asphalt inside the testing tank 3. If the viscosity parameters do not meet the requirements, the material is added and stirred until the viscosity parameters meet the requirements. Then, the opening and closing mechanism 7 is opened to unload the asphalt mixture inside the mixing tank 2 to the bottom of the base 1. This structure can detect the viscosity of the asphalt mixture without interrupting the stirring, and it is convenient to use.

[0028] The stirring mechanism 6 includes a first motor 61 fixedly connected to the side wall of the mixing tank 2 away from the ground. Specifically, the first motor 61 is fixedly connected to the top outer surface of the mixing tank 2. The output end of the first motor 61 extends into the interior of the mixing tank 2 and is fixedly connected to a main stirring shaft 62. A drive gear 65 is fixedly connected to the main stirring shaft 62 inside the mixing tank 2. A gear ring 64 is fixedly connected to the inner wall of the mixing tank 2. Several inertial gears 66 are arranged at equal angles between the drive gear 65 and the gear ring 64. In this embodiment, the equal angle is 120°, and there are three inertial gears 66. Three rotating plates 69 that cooperate with the inertial gears 66 are rotatably connected to the main stirring shaft 62. A secondary stirring shaft 63 is fixedly connected to each rotating plate 69 and the corresponding inertial gear 66, extending to the bottom of the mixing tank 2. The main stirring shaft 62 and the auxiliary stirring shaft 63 are both fixedly connected with spiral stirring blades 601 of the same direction of rotation. In use, the first motor 61 is started, which drives the main stirring shaft 62 to start rotating. The rotation of the main stirring shaft 62 drives the drive gear 65 to start rotating. The rotation of the drive gear 65, through its cooperation with three inert gears 66, drives the three auxiliary stirring shafts 63 to start rotating. The auxiliary stirring shafts 63 rotate around the main stirring shaft 62 while rotating on their own axis, thereby simultaneously driving the spiral stirring blades 601 on the main stirring shaft 62 and the auxiliary stirring shafts 63 to start rotating. Since the main stirring shaft 62 and the auxiliary stirring shaft 63 rotate in opposite directions, the spiral stirring blades 601 on the main stirring shaft 62 and the auxiliary stirring shaft 63 rotate in opposite directions, respectively driving the mixture to mix vertically and horizontally, thereby improving the mixing efficiency.

[0029] The opening and closing mechanism 7 includes a support rod 79 connected inside the mixing tank 2 near the base 1. The support rod 79 is arranged along the radial direction of the mixing tank 2, and its two ends are fixed to the inner wall of the mixing tank 2. A guide groove 78 is formed on the side wall of the support rod 79 facing the base 1 along the length direction of the support rod 79. Guide rods 77 are symmetrically slidably connected to both sides of the guide groove 78. In this embodiment, the cross-sectional shape of the guide groove 78 and the guide rods 77 are both T-shaped. A semi-circular opening and closing plate 76 is connected to the side wall of the guide rod 77 away from the guide groove 78. The two opening and closing plates 76 can be combined to form a complete circle, and its diameter is larger than the diameter of the bottom opening of the mixing tank 2. The opening and closing plate is preferably made of a metal heat-conducting material and can be heated by electricity. Connecting plates 74 are symmetrically fixed to both sides of the opening and closing plate 76 inside the opening and closing plate. The connecting plates 74 are symmetrical about the length direction of the support rod 79. Double-ended screws 72 are threaded between the connecting plates 74 on the same side of the two opening and closing plates 76. Plates 74 are located on both sides of the same double-ended screw 72. The double-ended screw 72 has reverse threads on both sides. The two ends of the double-ended screw 72 pass through the connecting plates 74 on both sides and are threaded to the fixing seats 73. The fixing seats 73 are fixedly connected to the base 1. One end of the double-ended screw 72 on one side is fixedly connected to a second motor 71, and the other end is connected to the double-ended screw 72 on the other side by a pulley assembly 75. The opening and closing plate 76 facing the base 1 is fixedly connected to a pulley 13 that contacts the base 1. In use, the second motor 71 is started, and the second motor 71 drives the double-ended screw 72 connected to the second motor 71 to rotate. The rotation of the double-ended screw 72 drives the double-ended screw 72 on the other side to rotate through the transmission of the pulley assembly 75. The rotation of the double-ended screw 72 causes the connecting plates 74 on both sides to move closer or further away from each other, thereby controlling the closing and separation of the opening and closing plates 76 on both sides, and thus controlling the discharge of the asphalt mixture inside the mixing tank 2. It is convenient and flexible to use.

[0030] The detection mechanism 8 includes a third motor 81 fixedly connected to the outer wall of the detection box 3 on the side away from the base 1. A horizontal partition 82 is fixedly connected inside the detection box 3. A dynamic torque sensor 83 is fixedly connected to the output end of the third motor 81 inside the box. The other end of the dynamic torque sensor 83 is fixedly connected to a load shaft 84 for stirring the asphalt mixture. The dynamic torque sensor 83 is located between the partition 82 and the motor inside the detection box 3. In use, when the asphalt mixture enters the detection box 3 through the connecting pipe 10, the third motor 81 is started. The third motor 81 drives the dynamic torque sensor 83 and the load shaft 84 to rotate simultaneously. The dynamic torque sensor 83 sends the measured torque and speed to the dynamic torque measuring and control instrument. The operator can determine the viscosity of the asphalt mixture based on these parameters.

[0031] The support rod 79 is divided into a triangular part and a rectangular part, with one corner of the triangular part pointing vertically upwards. The guide groove 78 is located on the rectangular part. In use, the triangular part design of the support rod 79 can reduce the retention of asphalt mixture on the support rod 79, which is beneficial for unloading.

[0032] An annular baffle 67 and a circular baffle 68 are provided between the spiral stirring blade 601 and the drive gear 65 inside the mixing tank 2. The annular baffle 67 and the circular baffle 68 are fixedly connected to the inner wall of the mixing tank 2 and the main stirring shaft 62, respectively, and an annular groove 14 is formed between the annular baffle 67 and the circular baffle 68 to cooperate with the auxiliary stirring shaft 63. In use, the use of the annular baffle 67 and the circular baffle 68 can isolate the drive gear 65 and the inert gear 66 from the stirring part, so as to protect the transmission part and extend the service life of the device.

[0033] The base 1 has a discharge port 15 with an inverted frustum shape fixedly connected to the side of the opening away from the mixing tank 2. In use, the discharge port 15 facilitates the collection of asphalt mixture.

[0034] On the opposite side walls of the two opening and closing plates 76, there are respectively a plug rod 12 and a slot 11 that cooperate with each other. The plug rod 12 is fixedly connected to the opening and closing plate 76. Through the cooperation of the plug rod 12 and the slot 11, the two opening and closing plates 76 can be connected more tightly, thereby improving the stability of the device.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing asphalt composition for road asphalt pavement, characterized in that: The system includes a T-shaped base (1) with a circular through hole, a mixing tank (2) with a bottom opening on the side of the base (1) away from the ground, a feed inlet (4) on the mixing tank (2), the opening of the mixing tank (2) matching the through hole of the base (1), a mixing mechanism (6) for multi-directional mixing of the asphalt mixture inside the mixing tank (2), an opening and closing mechanism (7) for controlling the discharge of the asphalt mixture inside the mixing tank (2) between the mixing tank (2) and the base (1), a detection box (3) on the side wall of the base (1) away from the ground on one side of the mixing tank (2), a discharge port (5) on the detection box (3), a detection mechanism (8) for detecting the viscosity of the asphalt mixture inside the detection box (3), a connecting pipe (10) connecting the mixing tank (2) and the detection box (3), and a solenoid valve (9) on the connecting pipe (10). The opening and closing mechanism (7) includes a support rod (79) connected inside the mixing tank (2) near the base (1). A guide groove (78) is provided on the side wall of the support rod (79) facing the base (1) along the length of the support rod (79). Guide rods (77) are symmetrically connected inside the guide groove (78). A semi-circular opening and closing plate (76) is connected to the side wall of the guide rod (77) away from the guide groove (78). Connecting plates (74) are symmetrically connected to both sides of the opening and closing plate (76). 6) A double-headed screw (72) is connected between the connecting plates (74) on the same side. The two ends of the double-headed screw (72) pass through the connecting plates (74) on both sides and are connected to a fixed seat (73). The fixed seat (73) is connected to the base (1). One end of the double-headed screw (72) on one side is connected to a second motor (71), and the other end is connected to the double-headed screw (72) on the other side with a pulley assembly (75). The opening and closing plate (76) facing the base (1) is provided with a pulley (13) that contacts the base (1). The support rod (79) is divided into a triangular part and a rectangular part, with one corner of the triangular part pointing vertically upwards, and the guide groove (78) is located on the rectangular part.

2. The asphalt composition testing device for road asphalt pavement according to claim 1, characterized in that: The stirring mechanism (6) includes a first motor (61) connected to the side wall of the mixing tank (2) away from the ground. The output end of the first motor (61) extends into the interior of the mixing tank (2) and is connected to a main stirring shaft (62). A drive gear (65) is connected to the main stirring shaft (62) inside the mixing tank (2). A gear ring (64) is connected to the inner wall of the mixing tank (2). A plurality of inertial gears (66) are arranged at equal angles between the drive gear (65) and the gear ring (64). A rotating plate (69) that cooperates with the plurality of inertial gears (66) is connected to the main stirring shaft (62). A secondary stirring shaft (63) is connected to the rotating plate (69) and the corresponding inertial gear (66). Spiral stirring blades (601) are connected to both the main stirring shaft (62) and the secondary stirring shaft (63).

3. The asphalt composition testing device for road asphalt pavement according to claim 1, characterized in that: The testing mechanism (8) includes a third motor (81) connected to the outer wall of the testing box (3) away from the base (1). The testing box (3) is provided with a horizontal partition (82). The output end of the third motor (81) is connected to a dynamic torque sensor (83). The other end of the dynamic torque sensor (83) is connected to a load shaft (84) for stirring the asphalt mixture. The dynamic torque sensor (83) is located between the partition (82) and the motor inside the testing box (3).

4. The asphalt composition testing device for road asphalt pavement according to claim 2, characterized in that: An annular baffle (67) and a circular baffle (68) are provided between the spiral stirring blade (601) and the drive gear (65) inside the mixing tank (2). The annular baffle (67) and the circular baffle (68) are respectively connected to the inner wall of the mixing tank (2) and the main stirring shaft (62), and an annular groove (14) is formed between the annular baffle (67) and the circular baffle (68) to cooperate with the auxiliary stirring shaft (63).

5. The asphalt composition testing device for road asphalt pavement according to claim 1, characterized in that: The base (1) has an outlet (15) with an inverted frustum shape connected to the side of the opening away from the mixing tank (2).

6. The asphalt composition testing device for road asphalt pavement according to claim 1, characterized in that: On the opposite side wall of the two opening and closing plates (76), there are respectively a plug (12) and a slot (11) that cooperate with each other.

7. The asphalt composition testing device for road asphalt pavement according to claim 6, characterized in that: The cross-sectional shape of both the guide rod (77) and the guide groove (78) is T-shaped.

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