Asphalt stirring device for highway construction

Abstract

The invention belongs to the technical field of highway construction, and particularly discloses a highway construction asphalt stirring device which comprises a stirring tank, the stirring tank is transversely and obliquely arranged, a supporting frame is fixedly arranged on the lower side of the stirring tank, a feeding hopper is fixedly arranged at an upstream opening of the upper side of the stirring tank, and a burner is fixedly arranged in the middle of the upper side of the stirring tank. A discharging cover is hinged to the position, at a downstream opening, of the lower side of the stirring tank, a stirring mechanism is coaxially and rotationally arranged in the stirring tank, a shear type telescopic driving mechanism is arranged at the top of the stirring tank, and a self-adaptive rotary grinding cleaning mechanism is arranged at the position, on one side of the shear type telescopic driving mechanism, in the stirring tank. By arranging the cleaning mechanism, asphalt residues on the inner wall of the stirring tank are effectively removed, self-adaptive cleaning can be carried out on asphalt layers with different thicknesses, the cleaning efficiency is improved, potential structural damage is reduced, and by arranging the stirring blades of a special structure, obstruction to the cleaning mechanism is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of highway construction, and specifically relates to an asphalt mixing device for highway construction. Background Art

[0002] In the process of modern highway construction, the application of asphalt mixing plant is very important, especially before paving asphalt pavement. Asphalt mixing plant is mainly responsible for mixing asphalt with other materials evenly to ensure the quality of road construction. This device usually consists of a mixing tank, mixing blades, transmission system, heating system and control system. During operation, the raw materials are vigorously stirred in the mixing tank to achieve the required uniformity and viscosity.

[0003] However, the existing asphalt mixing technology has several obvious disadvantages. First, asphalt itself has a high viscosity, which makes it easy for asphalt to adhere to the inner wall of the mixing tank during continuous operation. Since the equipment needs to operate continuously, it is often difficult for workers to effectively clean the tank wall during work breaks. As time goes by, the asphalt that is not cleaned in time will condense and harden, making the asphalt layer on the tank wall thicker and thicker, which not only affects the efficiency of the next use, but also greatly increases the difficulty of cleaning.

[0004] Secondly, the common method for cleaning asphalt agglomerates is to use a scraper to mechanically scrape them. This method is not ideal when dealing with asphalt layers of uneven thickness. For thicker condensed asphalt layers, a single flat scraping method will encounter great resistance, not only with poor cleaning effects, but may even cause structural damage to the mixing tank or the scraper itself.

[0005] Finally, in the existing mixing equipment design, the mixing blades are usually very close to the tank wall, which makes the gap between the mixing blades and the tank wall very small. Although this design can enhance the mixing effect, it also greatly increases the difficulty of cleaning. When trying to remove the adhered asphalt from the tank wall, the mixing blades often become an obstacle, making it impossible to carry out the cleaning operation smoothly.

[0006] In summary, the existing asphalt mixing device has many technical defects in maintenance and cleaning. Therefore, it is urgent to invent an asphalt mixing device for highway construction to solve the above problems. Summary of the invention

[0007] In view of the above situation, the present invention provides an asphalt mixing device for highway construction. By setting up a cleaning mechanism, the asphalt residue on the inner wall of the mixing tank can be effectively removed, and adaptive cleaning can be performed on asphalt layers of different thicknesses, thereby increasing the cleaning efficiency and reducing potential structural damage. By setting up mixing blades with a special structure, obstruction to the cleaning mechanism is avoided.

[0008] The technical solution adopted by the present invention is as follows: The present invention proposes an asphalt mixing device for highway construction, including a mixing tank, which is arranged to be laterally inclined to facilitate the movement of materials toward the outlet direction, a support frame is fixedly provided on the lower side of the mixing tank, a feed hopper is fixedly provided at the upstream opening on the upper side of the mixing tank to facilitate loading, a burner is fixedly provided in the middle part of the upper side of the mixing tank for heating the material, a discharge cover is hinged at the downstream opening on the lower side of the mixing tank for opening and closing the outlet, a stirring mechanism is coaxially rotated inside the mixing tank, a scissor-type telescopic drive mechanism is provided on the top of the mixing tank, and an adaptive rotary grinding cleaning mechanism is provided on one side of the scissor-type telescopic drive mechanism inside the mixing tank.

[0009] Furthermore, the adaptive rotary grinding cleaning mechanism includes an adaptive rotary grinding unit, the adaptive rotary grinding unit is arranged close to the inner wall of the stirring tank, the adaptive rotary grinding unit is arranged in an array along the axial circumference of the stirring tank, and the adaptive rotary grinding unit is arranged in two layers along the length direction of the stirring tank, and a first fixed rod is fixed between adjacent adaptive rotary grinding units in the same layer, and a second fixed rod is fixed on one side of the first fixed rod of one layer, and the second fixed rod is fixedly connected to the adaptive rotary grinding unit of another layer.

[0010] Furthermore, the adaptive rotary grinding unit includes a support rod, which is arranged parallel to one side of the top of the stirring tank, and a vertical hollow rod is arranged parallel to one side of the support rod, and a second limit column is symmetrically fixedly arranged on one side of the vertical hollow rod, and the second limit column slides and limits and passes through both ends of the support rod, and horizontal hollow rods are laterally fixedly arranged at both ends of the vertical hollow rod, and a DC motor is fixed at one end of one of the horizontal hollow rods, and a grinding wheel is coaxially rotated between the output end of the DC motor and the end of the other horizontal hollow rod, and the axis of the grinding wheel is parallel to the vertical hollow rod, and the side wall of the grinding wheel is tightly arranged against the inner wall of the stirring tank to achieve cleaning of the inner wall of the stirring tank, and the plane formed by the axis of each layer of grinding wheels is parallel to the top of the stirring tank, and the projections of different layers of grinding wheels on the top of the stirring tank cover the edge of the top of the stirring tank to achieve cleaning of the entire inner wall of the stirring tank.

[0011] Furthermore, the adaptive athermal unit includes a sliding column, which is fixedly arranged in the middle of one side of the support rod, a hollow column is provided on the sliding sleeve outside the sliding column, a compression spring is fixedly arranged between the hollow column and the support rod, and the compression spring is sleeved on the outside of the sliding column, one end of the hollow column passes through the vertical hollow rod and is fixedly provided with a pressure plate, the pressure plate is tightly attached to the inner wall of the vertical hollow rod, a force-sensitive resistor is tightly attached to one side of the pressure plate, and the force-sensitive resistor is fixedly arranged on the inner wall of the vertical hollow rod, the two ends of the first fixed rod are respectively fixedly connected to the adjacent support rods on the same layer, and the two ends of the second fixed rod are respectively fixedly connected to one layer of the first fixed rod and the other layer of the support rod.

[0012] Furthermore, the scissor-type telescopic drive mechanism includes a vertical opening, which is symmetrically opened on the top surface of the mixing tank, and the vertical opening points to the ground. The mixing tank is fixedly provided with a fixed shaft in the middle of the vertical opening, and a first connecting rod and a second connecting rod are provided on the inner side of the top of the mixing tank. The first connecting rod and the second connecting rod are both arranged in a linear array, and the first connecting rod and the second connecting rod are hinged to each other to form two groups of scissor-type structures. The middle parts of the first connecting rod and the second connecting rod located on one side edge are rotatably connected to the fixed shaft, and one ends of the first connecting rod and the second connecting rod located on the other side edge are rotatably connected to the third connecting rod.

[0013] Furthermore, the scissor-type telescopic drive mechanism includes a slide rail, which is arranged on the outside of the top of the mixing tank. The lateral extension sections of the first connecting rod and one end of the second connecting rod located on the fixed axis are both slidably arranged in the slide rail, and a push rod is fixed between the two slide rails. A first limit column is symmetrically slidably penetrated on the push rod, and the first limit column is fixed on the top of the mixing tank. A rocker is provided in the middle of the push rod, one end of the rocker is rotatably connected to the top of the mixing tank, and the middle of the rocker is threadedly connected to the push rod.

[0014] Furthermore, a second support is fixedly provided at the middle of two support rods in the horizontal direction close to the top of the mixing tank, the second support faces the top of the mixing tank, and the third connecting rod is rotatably connected to the second support.

[0015] Furthermore, the stirring mechanism includes a stirring motor, which is fixedly arranged on the outside of the bottom of the stirring tank, and the output end of the stirring motor passes through the bottom of the stirring tank and is coaxially fixed with a stirring shaft, and a first support is fixedly arranged on the stirring shaft, and the first support is arranged in a linear array along the length direction of the stirring shaft, and the first support is arranged in a circular array along the axis of the stirring shaft, and a stirring blade is rotatably arranged on the first support for stirring the material, and the first support is provided with a tension spring on the side close to the bottom of the stirring tank, and the two ends of the tension spring are respectively fixedly connected to the stirring blade and the stirring shaft, and the first support is fixedly provided with a limit block on the side close to the tension spring for limiting the rotation amplitude of the stirring blade on the first support.

[0016] Furthermore, the DC motor is arranged in series with the force-sensitive resistor and the total power supply, and different DC motors are arranged in parallel. The DC motor rotates faster when the current is larger, and the resistance value of the force-sensitive resistor decreases when the pressure on the force-sensitive resistor increases.

[0017] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The grinding wheel contacts the condensed asphalt during its movement and removes the asphalt through rotational friction. The grinding wheel has a better cleaning effect on condensed and hardened asphalt. When encountering thicker asphalt, the grinding wheel will be subjected to pressure toward the axis of the mixing tank during its forward movement. The raised asphalt will push the grinding wheel, the horizontal hollow rod and the vertical hollow rod to move toward the support rod. The compression spring is compressed, so that the frontal resistance of the thicker asphalt to the adaptive rotary grinding unit is reduced through deformation, thereby avoiding structural damage. At the same time, the pressure of the compression spring on the hollow column increases, thereby increasing the pressure of the pressure plate on the force-sensitive resistor and reducing the resistance value of the force-sensitive resistor. Since the force-sensitive resistor and the DC motor are arranged in series in the same circuit, the current in the circuit increases, which speeds up the DC motor, thereby enhancing the cleaning effect of the grinding wheel on the inner wall of the mixing tank. When encountering thicker asphalt, the cleaning effect of the asphalt can be enhanced, the cleaning time is reduced, and energy utilization is optimized, thereby achieving adaptive cleaning. (2) Rotate the rocker, and under the movement of the thread and through the limitation of the first limiting column, the push rod is moved away from the top of the mixing tank, thereby driving the slide rail away from the top of the mixing tank. During the movement of the slide rail, the first connecting rod and the second connecting rod adjacent to it are driven to rotate around the fixed axis as the axis. Based on the principle of the scissor-type structure, the third connecting rod is moved away from the top of the mixing tank. Since the third connecting rod is connected to the second support, the adaptive rotary grinding unit is driven to move away from the top of the mixing tank. By setting up a scissor-type telescopic drive mechanism, it is convenient to operate the adaptive rotary grinding cleaning mechanism in the mixing tank from the outside. At the same time, the design of the scissor-type structure also reduces space occupation; (3) After the centralized stirring is completed, the stirring blade is tightened toward the stirring shaft under the action of the tension spring until it contacts the limit block, so that there is enough space between the edge of the stirring blade and the inner wall of the stirring tank to accommodate the adaptive rotary grinding cleaning mechanism, making the cleaning process smoother and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of an asphalt mixing device for highway construction proposed by the present invention; Figure 2 This is a structural schematic diagram of the positional relationship between a scissor-type telescopic driving mechanism and an adaptive rotary grinding cleaning mechanism of an asphalt mixing device for highway construction proposed by the present invention; Figure 3 This is a schematic diagram of the exploded structure of the positional relationship between the stirring blade and the first support of an asphalt mixing device for highway construction proposed by the present invention; Figure 4 This is a schematic diagram of the exploded structure of the positional relationship between the scissor-type telescopic drive mechanism and the mixing tank of an asphalt mixing device for highway construction proposed by the present invention; Figure 5 This is a structural schematic diagram of the positional relationship between the first connecting rod and the second connecting rod of an asphalt mixing device for highway construction proposed by the present invention; Figure 6 This is a schematic structural diagram of an adaptive rotary grinding cleaning mechanism of an asphalt mixing device for highway construction proposed by the present invention; Figure 7 for Figure 6 Enlarged view of part A; Figure 8 This is a schematic structural diagram of an adaptive rotary grinding unit of an asphalt mixing device for highway construction proposed by the present invention; Fig. 9 This is a front view of an adaptive rotary grinding unit of an asphalt mixing device for highway construction proposed by the present invention; Fig.10 for Fig. 9 Middle BB section; Fig.11 for Fig.10 Enlarged view of part C.

[0019] Among them, 1. stirring tank, 2. support frame, 3. feed hopper, 4. burner, 5. discharge cover, 6. stirring mechanism, 61. stirring motor, 62. stirring shaft, 63. first support, 64. limit block, 65. stirring blade, 66. tension spring, 7. scissor-type telescopic drive mechanism, 71. vertical opening, 711. fixed shaft, 72. first connecting rod, 73. second connecting rod, 74. third connecting rod, 75. slide rail, 76. push rod, 77 , first limiting column, 78, rocker, 8, adaptive lap cleaning mechanism, 81, adaptive lap unit, 82, first fixed rod, 83, second fixed rod, 84, support rod, 841, sliding column, 842, compression spring, 843, second support, 85, hollow column, 851, pressure plate, 86, force sensitive resistor, 87, vertical hollow rod, 871, horizontal hollow rod, 872, second limiting column, 88, DC motor, 89, grinding wheel.

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 As shown, the present invention proposes an asphalt mixing device for highway construction, comprising a mixing tank 1, which is arranged to be inclined laterally, a support frame 2 is fixedly provided on the lower side of the mixing tank 1, a feed hopper 3 is fixedly provided at the upstream opening on the upper side of the mixing tank 1, a burner 4 is fixedly provided at the middle part of the upper side of the mixing tank 1, a discharge cover 5 is hinged at the downstream opening on the lower side of the mixing tank 1, a mixing mechanism 6 is coaxially rotated inside the mixing tank 1, a scissor-type telescopic driving mechanism 7 is provided on the top of the mixing tank 1, and an adaptive rotary grinding cleaning mechanism 8 is provided on one side of the scissor-type telescopic driving mechanism 7 inside the mixing tank 1.

[0024] Among them, the adaptive rotary grinding cleaning mechanism 8 includes an adaptive rotary grinding unit 81, which is arranged close to the inner wall of the stirring tank 1, and the adaptive rotary grinding unit 81 is arranged in an array along the axis of the stirring tank 1. The adaptive rotary grinding unit 81 is arranged in two layers along the length direction of the stirring tank 1, and a first fixed rod 82 is fixed between adjacent adaptive rotary grinding units 81 in the same layer, and a second fixed rod 83 is fixed on one side of the first fixed rod 82 of one layer, and the second fixed rod 83 is fixedly connected to the adaptive rotary grinding unit 81 of another layer.

[0025] Among them, the adaptive grinding unit 81 includes a support rod 84, which is arranged parallel to one side of the top of the stirring tank 1, and a vertical hollow rod 87 is arranged parallel to one side of the support rod 84, and a second limiting column 872 is symmetrically fixed on one side of the vertical hollow rod 87, and the second limiting column 872 slides and limits and passes through both ends of the support rod 84, and horizontal hollow rods 871 are laterally fixed at both ends of the vertical hollow rod 87, and a DC motor 88 is fixed at one end of one of the horizontal hollow rods 871, and a grinding wheel 89 is coaxially rotated between the output end of the DC motor 88 and the end of the other horizontal hollow rod 871, and the axis of the grinding wheel 89 is parallel to the vertical hollow rod 87, and the side wall of the grinding wheel 89 is closely arranged to the inner wall of the stirring tank 1, and the plane formed by the axis of each layer of grinding wheels 89 is parallel to the top of the stirring tank 1, and different layers of grinding wheels 89 are arranged on the stirring tank 1. The projection of the tank top covers the edge of the tank top of the mixing tank 1. The adaptive grinding unit 81 includes a sliding column 841, which is fixedly arranged in the middle of one side of the support rod 84. A hollow column 85 is slidably sleeved on the outer side of the sliding column 841. A compression spring 842 is fixedly arranged between the hollow column 85 and the support rod 84. The compression spring 842 is sleeved on the outer side of the sliding column 841. One end of the hollow column 85 passes through the vertical hollow rod 87 and is fixedly provided with a pressure plate 851. The pressure plate 851 is tightly attached to the inner wall of the vertical hollow rod 87. A force-sensitive resistor 86 is tightly attached to one side of the pressure plate 851. The force-sensitive resistor 86 is fixedly arranged on the inner wall of the vertical hollow rod 87. The two ends of the first fixed rod 82 are respectively fixedly connected to the adjacent support rods 84 on the same layer, and the two ends of the second fixed rod 83 are respectively fixedly connected to one layer of the first fixed rod 82 and another layer of the support rods 84.

[0026] The scissor-type telescopic drive mechanism 7 includes a vertical opening 71, which is symmetrically opened on the top surface of the mixing tank 1, and the vertical opening 71 points to the ground. The mixing tank 1 is fixed with a fixed shaft 711 in the middle of the vertical opening 71, and a first connecting rod 72 and a second connecting rod 73 are provided on the inner side of the top of the mixing tank 1. The first connecting rod 72 and the second connecting rod 73 are both arranged in a linear array, and the first connecting rod 72 and the second connecting rod 73 are connected by mutual hinges to form two groups of scissor-type structures. The middle parts of the first connecting rod 72 and the second connecting rod 73 located on one side edge are both rotatably connected to the fixed shaft 711, and the first connecting rod 72 and the second connecting rod 73 located on the other side edge are both rotatably connected to the fixed shaft 711. 2 and one end of the second connecting rod 73 are both rotatably connected to the third connecting rod 74, the scissor-type telescopic driving mechanism 7 includes a slide rail 75, the slide rail 75 is arranged on the outer side of the top of the mixing tank 1, the first connecting rod 72 located on the fixed shaft 711 and the lateral extension section at one end of the second connecting rod 73 are both slidably arranged in the slide rail 75, a push rod 76 is fixedly arranged between the two slide rails 75, and a first limiting column 77 is symmetrically slidably penetrated on the push rod 76, and the first limiting column 77 is fixedly arranged on the top of the mixing tank 1, a rocker 78 is arranged in the middle of the push rod 76, one end of the rocker 78 is rotatably connected to the top of the mixing tank 1, and the middle of the rocker 78 is threadedly connected to the push rod 76.

[0027] Among them, a second support 843 is fixedly arranged in the middle of two support rods 84 located in the horizontal direction near the top of the stirring tank 1, and the second support 843 faces the top of the stirring tank 1. The third connecting rod 74 is rotatably connected to the second support 843. The stirring mechanism 6 includes a stirring motor 61, and the stirring motor 61 is fixedly arranged on the outer side of the bottom of the stirring tank 1. The output end of the stirring motor 61 passes through the bottom of the stirring tank 1 and is coaxially fixed with a stirring shaft 62. A first support 63 is fixed on the stirring shaft 62. The first support 63 is arranged in a linear array along the length direction of the stirring shaft 62. The first support 63 A stirring blade 65 is rotatably arranged in an array along the axis of the stirring shaft 62, and a tension spring 66 is provided on the first support 63. The first support 63 is provided with a tension spring 66 on the side close to the bottom of the stirring tank 1. The two ends of the tension spring 66 are respectively fixedly connected to the stirring blade 65 and the stirring shaft 62. The first support 63 is fixedly provided with a limit block 64 on the side close to the tension spring 66. The DC motor 88 is arranged in series with the force-sensitive resistor 86 and the total power supply. Different DC motors 88 are arranged in parallel. The DC motor 88 rotates faster when the current is larger, and the resistance value of the force-sensitive resistor 86 decreases when the pressure applied to it increases.

[0028] When in use, the burner 4 is turned on, the stirring motor 61 is turned on to drive the stirring shaft 62 and then the stirring blade 65 to rotate. Under the action of centrifugal force, the stirring blade 65 gradually expands during the rotation process to overcome the tension of the tension spring 66, so that the edge of the stirring blade 65 is close to the inner wall of the stirring tank 1, and asphalt and other aggregates and additives are mixed from the feed hopper 3 for stirring. The discharge cover 5 is opened to pour out the stirred materials. During the stirring process, the scissor-type telescopic drive mechanism 7 is in the initial state, so that the adaptive rotary grinding cleaning mechanism 8 is located upstream of the feed hopper 3 and will not contact the stirring mechanism 6; When the concentrated stirring is completed, the stirring blade 65 is tightened toward the stirring shaft 62 under the action of the tension spring 66 until it contacts the limit block 64, so that there is enough space between the edge of the stirring blade 65 and the inner wall of the stirring tank 1 to accommodate the adaptive rotary grinding cleaning mechanism 8. Due to continuous operation, part of the asphalt condenses on the inner wall of the stirring tank 1 and hardens. At this time, the main power supply is controlled to turn on all DC motors 88, and the DC motor 88 drives the grinding wheel 89 to rotate and rub the inner wall of the stirring tank 1. At this time, the rocker 78 is rotated, and the push rod 76 is moved away from the stirring tank under the threaded movement and through the limitation of the first limit column 77. 1 tank top, thereby driving the slide rail 75 away from the tank top of the mixing tank 1. During the movement of the slide rail 75, the first connecting rod 72 and the second connecting rod 73 adjacent thereto are driven to rotate around the fixed shaft 711 as the axis. Based on the principle of the scissor-fork structure, the third connecting rod 74 is away from the tank top of the mixing tank 1. Since the third connecting rod 74 is connected to the second support 843, the adaptive rotary grinding unit 81 is driven to move away from the tank top of the mixing tank 1, so that the grinding wheel 89 contacts the condensed asphalt during the movement, and the asphalt is removed by the rotational friction. When encountering thicker asphalt, the grinding wheel 89 will be affected by the friction during the forward movement. The pressure on the axis of the mixing tank 1, the raised asphalt will push the grinding wheel 89, the horizontal hollow rod 871 and the vertical hollow rod 87 to move toward the support rod 84, and the distance between the vertical hollow rod 87 and the support rod 84 will decrease, which will drive the sliding column 841 to slide in the hollow column 85, and the pressure of the compression spring 842 on the hollow column 85 will increase, thereby increasing the pressure of the pressure plate 851 on the force-sensitive resistor 86. Based on the characteristics of the force-sensitive resistor 86, when the pressure increases, the resistance value decreases. Since the force-sensitive resistor 86 and the DC motor 88 are arranged in series in the same circuit, when the resistance value of the force-sensitive resistor 86 decreases The current in the circuit increases. Based on the characteristics of the DC motor 88, the increase in current increases the speed of the DC motor 88, thereby enhancing the cleaning effect of the grinding wheel 89 on the inner wall of the mixing tank 1. When encountering thicker asphalt, the cleaning effect of the asphalt can be enhanced and the cleaning time can be reduced. The rocker 78 is rotated until the grinding wheel 89 cleans the entire inner wall of the mixing tank 1. The rocker 78 is reversed to make the grinding wheel 89 move in the opposite direction to clean it again to avoid asphalt residue. Until the grinding wheel 89 returns to the initial position, the DC motor 88 is turned off, thereby achieving a thorough cleaning of the residual asphalt on the inner wall of the mixing tank 1.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0031] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. An asphalt mixing device for highway construction, comprising a mixing tank (1), Features: The stirring tank (1) is arranged to be inclined transversely, a support frame (2) is fixedly provided on the lower side of the stirring tank (1), a feed hopper (3) is fixedly provided on the upper side of the stirring tank (1) at the upstream opening, a burner (4) is fixedly provided on the middle part of the upper side of the stirring tank (1), a discharge cover (5) is hingedly connected to the lower side of the stirring tank (1) at the downstream opening, a stirring mechanism (6) is coaxially rotated inside the stirring tank (1), a scissor-type telescopic drive mechanism (7) is provided on the top of the stirring tank (1), and an adaptive rotary grinding cleaning mechanism (8) is provided on one side of the scissor-type telescopic drive mechanism (7) inside the stirring tank (1).

2. An asphalt mixing device for highway construction according to claim 1, Features: The adaptive athermal cleaning mechanism (8) comprises an adaptive athermal unit (81), the adaptive athermal unit (81) being arranged in close contact with the inner wall of the stirring tank (1), the adaptive athermal units (81) being arranged in an array along the axis of the stirring tank (1), the adaptive athermal units (81) being arranged in two layers along the length direction of the stirring tank (1), first fixing rods (82) being fixedly arranged between adjacent adaptive athermal units (81) in the same layer, a second fixing rod (83) being fixedly arranged on one side of the first fixing rod (82) of one layer, and the second fixing rod (83) being fixedly connected to the adaptive athermal units (81) of another layer.

3. An asphalt mixing device for highway construction according to claim 2, Features: The adaptive athermal grinding unit (81) comprises a support rod (84), the support rod (84) being arranged parallel to one side of the tank top of the stirring tank (1), a vertical hollow rod (87) being arranged parallel to one side of the support rod (84), a second limiting column (872) being symmetrically fixedly arranged on one side of the vertical hollow rod (87), the second limiting column (872) being slidingly limited and passing through both ends of the support rod (84), and horizontal hollow rods (871) being fixedly arranged laterally at both ends of the vertical hollow rod (87), one of the horizontal hollow rods (871) being fixedly arranged laterally. A DC motor (88) is fixedly provided at one end, and a grinding wheel (89) is coaxially rotatably provided between the output end of the DC motor (88) and the end of another horizontal hollow rod (871), the axis of the grinding wheel (89) is parallel to the vertical hollow rod (87), the side wall of the grinding wheel (89) is closely arranged to the inner wall of the stirring tank (1), the plane formed by the axis of each layer of grinding wheels (89) is parallel to the top of the stirring tank (1), and the projections of the grinding wheels (89) of different layers on the top of the stirring tank (1) cover the edge of the top of the stirring tank (1).

4. An asphalt mixing device for highway construction according to claim 3, Features: The adaptive atherectomy unit (81) comprises a sliding column (841), wherein the sliding column (841) is fixedly arranged at the middle part of one side of the support rod (84), a hollow column (85) is slidably sleeved on the outer side of the sliding column (841), a compression spring (842) is fixedly arranged between the hollow column (85) and the support rod (84), the compression spring (842) is sleeved on the outer side of the sliding column (841), and a compression spring (842) is fixedly arranged on the outer side of the sliding column (841) after one end of the hollow column (85) passes through the vertical hollow rod (87). The pressure plate (851) is in close contact with the inner wall of the vertical hollow rod (87); a force-sensitive resistor (86) is provided in close contact with one side of the pressure plate (851); the force-sensitive resistor (86) is fixedly arranged on the inner wall of the vertical hollow rod (87); the two ends of the first fixed rod (82) are respectively fixedly connected to adjacent support rods (84) of the same layer; and the two ends of the second fixed rod (83) are respectively fixedly connected to the first fixed rod (82) of one layer and the support rods (84) of another layer.

5. An asphalt mixing device for highway construction according to claim 4, Features: The scissor-type telescopic driving mechanism (7) comprises a vertical opening (71), the vertical opening (71) being symmetrically opened on the top surface of the mixing tank (1), the vertical opening (71) pointing to the ground, the mixing tank (1) being fixedly provided with a fixed shaft (711) in the middle of the vertical opening (71), the inner side of the top of the mixing tank (1) being provided with a first connecting rod (72) and a second connecting rod (73), the first connecting rod (72) and the second connecting rod (73) being arranged in a linear array, the first connecting rod (72) and the second connecting rod (73) being hinged to each other to form two groups of scissor-type structures, the middle parts of the first connecting rod (72) and the second connecting rod (73) located at one side edge are both rotatably connected to the fixed shaft (711), and one ends of the first connecting rod (72) and the second connecting rod (73) located at the other side edge are both rotatably connected to a third connecting rod (74).

6. An asphalt mixing device for highway construction according to claim 5, Features: The scissor-type telescopic driving mechanism (7) comprises a slide rail (75), the slide rail (75) being arranged on the outside of the tank top of the mixing tank (1), the lateral extension sections of the first connecting rod (72) and the second connecting rod (73) located on the fixed shaft (711) being slidably arranged in the slide rail (75), a push rod (76) being fixedly arranged between the two slide rails (75), a first limiting column (77) being symmetrically slidably penetrated through the push rod (76), the first limiting column (77) being fixedly arranged on the tank top of the mixing tank (1), a rocking arm (78) being arranged in the middle of the push rod (76), one end of the rocking arm (78) being rotatably connected to the tank top of the mixing tank (1), and the middle of the rocking arm (78) being threadedly connected to the push rod (76).

7. An asphalt mixing device for highway construction according to claim 6, Features: A second support (843) is fixedly provided at the middle of two support rods (84) located in a horizontal direction near the top of the mixing tank (1), the second support (843) faces the top of the mixing tank (1), and the third connecting rods (74) are rotatably connected to the second support (843).

8. An asphalt mixing device for highway construction according to claim 7, Features: The stirring mechanism (6) comprises a stirring motor (61), wherein the stirring motor (61) is fixedly arranged on the outer side of the bottom of the stirring tank (1), and an output end of the stirring motor (61) passes through the bottom of the stirring tank (1) and is coaxially fixedly provided with a stirring shaft (62), and a first support (63) is fixedly provided on the stirring shaft (62), wherein the first support (63) is arranged in a linear array along the length direction of the stirring shaft (62), and the first support (63) is arranged in a circular array along the axis of the stirring shaft (62), and a stirring blade (65) is rotatably provided on the first support (63), and a tension spring (66) is provided on the first support (63) at a side close to the bottom of the stirring tank (1), and two ends of the tension spring (66) are respectively fixedly connected to the stirring blade (65) and the stirring shaft (62), and a limit block (64) is fixedly provided on the first support (63) at a side close to the tension spring (66).

9. An asphalt mixing device for highway construction according to claim 8, Features: The DC motor (88) is arranged in series with the force-sensitive resistor (86) and the main power supply, and different DC motors (88) are arranged in parallel. The DC motor (88) rotates faster when the current is larger, and the resistance value of the force-sensitive resistor (86) decreases when the pressure applied to the force-sensitive resistor (86) increases.

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