An asphalt paver for highway construction

Abstract

The utility model relates to bitumen laying technical field, and disclose a highway engineering is with bitumen laying machine, this highway engineering is with bitumen laying machine, including the vehicle body, the shell is fixedly installed on the vehicle body, the inner tube is fixedly installed in the shell, the inner tube top end is clamped and has the top cap, the inner tube bottom end is established and has the discharge slot. This highway engineering is with bitumen laying machine, in order to make the laying efficiency higher, through setting up the stirring subassembly, when starting servo motor, makes the rotating shaft drive stirring paddle rotation and stirs the bitumen, avoids too much bonding, starts the air heater, cooperates the air outlet tube and transports the hot air to the shell inside, avoids the bitumen cooling, the gas passes through the top cover and the rectangular filter plate and exports, the gas in the inner tube inside passes through the elbow pipe and exports, cooperates the blocking of the blocking rod, makes the bitumen be dispersed when entering the inner tube, avoids too much concentration and causes the too big impact to the inner tube, and the bitumen material passes through the discharge slot and is arranged to the ground after entering the inclined frame, and then makes the laying efficiency higher.

Description

Technical Field

[0001] This utility model relates to the field of asphalt paving technology, specifically to an asphalt paving machine for highway engineering. Background Technology

[0002] In the field of highway engineering, asphalt pavement is widely used in the construction of provincial trunk highways in China due to its many advantages, such as good driving comfort, relatively low maintenance costs and short construction period. Asphalt paving machines play a key role in the construction of asphalt pavement.

[0003] Currently, there are various types of asphalt paving machines on the market. After the material truck arrives at the site, the driver often rolls up the tarpaulin too early, exposing the mixture to the air and accelerating heat loss. At the same time, there are large temperature differences in the asphalt mixture on the truck. The temperature of the mixture around the perimeter, top, and bottom of the truck bed is lower, while the temperature of the center part is higher. Due to the low thermal conductivity of the asphalt mixture, heat conduction is slow, resulting in large temperature differences between the mixtures.

[0004] There is a lack of small-scale paving machines designed for small-area paving after large-scale paving, which are equipped with a mixing mechanism to ensure uniform temperature of the asphalt material, prevent it from cooling and solidifying, and improve paving efficiency. Therefore, we propose an asphalt paving machine for highway engineering. Utility Model Content

[0005] The purpose of this utility model is to provide an asphalt paving machine for highway engineering to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An asphalt paving machine for highway engineering includes a vehicle body, an outer shell fixedly mounted on the vehicle body, an inner cylinder fixedly mounted inside the outer shell, a top cover snapped onto the top of the inner cylinder, a discharge chute formed at the bottom of the inner cylinder, an electric cylinder fixedly mounted on the outer wall of the outer shell, the bottom of the piston end of the electric cylinder being fixedly connected to the center of the top of a baffle, the baffle controlling the opening and closing of the discharge chute, a slanted frame fixedly mounted on one side of the outer wall at the bottom of the outer shell, and a mixing assembly mounted on the vehicle body, the mixing assembly comprising:

[0008] A servo motor is fixedly installed on the outer wall of the other side of the housing. A rotating shaft is fixedly installed at the output end of the servo motor. Both ends of the rotating shaft are rotatably installed inside the inner cylinder side wall through sealed bearings. An agitator is fixedly installed on the outer wall of the rotating shaft.

[0009] A hot air blower is fixedly installed on the outer wall of the housing near the inclined frame, and an air outlet is fixedly installed at the output end of the hot air blower, with the air outlet located inside the housing.

[0010] The top cover is fixedly installed on the top of the outer shell. A rectangular filter plate is snapped into the inside of the top cover at the end away from the outer shell. A bent pipe is fixedly installed inside the arc-shaped inner wall at the top of the inner cylinder. The bent pipe penetrates the outer shell. Circular filter plates are snapped into the inside of both ends of the bent pipe. A stop bar is fixedly installed inside the top of the inner cylinder.

[0011] In a further embodiment, the stirring paddle is provided in multiple sets, and the multiple sets of stirring paddles are arranged in a linear array with equal spacing, thereby improving the stirring effect.

[0012] In a further embodiment, two sets of hot air blowers and air outlet ducts are provided, and both sets of hot air blowers and air outlet ducts are mirror images of the vertical center of the inner cylinder, positioned on both sides of the bottom end of the inner cylinder to better prevent asphalt cooling.

[0013] In a further embodiment, multiple sets of the baffles are provided, and the multiple sets of baffles are arranged in a linear array with equal spacing to better protect the inner cylinder.

[0014] In a further embodiment, an auxiliary component is provided on the housing, the auxiliary component including a servo motor. The servo motor is fixedly installed on the outer wall of the housing near the servo motor, and an auger paddle is fixedly installed at the output end of the servo motor. The auger paddle and the discharge chute are coaxial in their circular cross-sections, which facilitates better material discharge.

[0015] In a further embodiment, a vertical plate is fixedly installed on the inner wall of the inner cylinder, and both ends of the auger propeller are rotatably installed inside the inner cylinder side wall and inside the vertical plate respectively through sealed bearings, making the rotation of the auger propeller more stable.

[0016] In a further embodiment, a hinge plate is hinged to the end of the inclined frame away from the outer shell, and a temperature sensor is fixedly installed inside the side wall of the outer shell. Multiple sets of temperature sensors are provided to make the temperature data acquisition more accurate.

[0017] Compared with the prior art, this utility model provides an asphalt paving machine for highway engineering, which has the following beneficial effects:

[0018] 1. This asphalt paving machine for highway engineering, in order to improve paving efficiency, is equipped with a mixing component. This component works in conjunction with the vehicle body to better move the outer shell. When the top cover is opened, asphalt material is fed into the inner cylinder. The electric cylinder is activated, causing the baffle to move up and down, opening and closing the discharge chute. When the servo motor is activated, the rotating shaft drives the mixing paddle to mix the asphalt, preventing excessive adhesion. The hot air fan, along with the air outlet, delivers hot air into the outer shell to prevent the asphalt from cooling. The gas is discharged through the top cover and rectangular filter plates. The rectangular filter plates prevent external debris from entering the outer shell. The gas inside the inner cylinder is discharged through a curved pipe, where circular filter plates prevent external debris from entering the inner cylinder and also prevent material from entering the curved pipe. Combined with the blocking action of the baffle, the asphalt entering the inner cylinder is dispersed, preventing excessive concentration and impact on the inner cylinder, thus improving paving efficiency.

[0019] 2. To enhance the practicality of this asphalt paving machine used in highway engineering, auxiliary components are incorporated. When material discharge is required, a servo motor is activated, causing the auger paddle to rotate inside the vertical plate. This facilitates the efficient discharge of asphalt material from the discharge chute to the inclined frame. The hinged plate prevents the asphalt material from rushing forward when discharged from the inclined frame. Furthermore, a temperature sensor monitors the internal temperature of the cylinder, allowing for better control of the hot air blower's output heat, thus further enhancing the practicality of the paving machine. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0022] Figure 3 This utility model Figure 2 Enlarged structural diagram of region A in the middle;

[0023] Figure 4 This is a first-view sectional view of part of the structure of this utility model;

[0024] Figure 5 This is a second-view sectional view of part of the structure of this utility model;

[0025] Figure 6 This utility model Figure 5 Enlarged structural diagram of region B in the middle;

[0026] Figure 7 This is a third-view sectional view of part of the structure of this utility model.

[0027] Explanation of icon numbers:

[0028] 1. Car body; 2. Outer shell; 3. Inner cylinder; 4. Top cover; 5. Discharge chute; 6. Electric cylinder; 7. Baffle; 8. Inclined frame;

[0029] 9. Stirring assembly; 91. Servo motor; 92. Rotating shaft; 93. Stirring paddle; 94. Hot air blower; 95. Air outlet; 96. Top cover; 97. Rectangular filter plate; 98. Bend; 99. Circular filter plate; 910. Baffle bar;

[0030] 10. Auxiliary components; 101. Servo motor; 102. Screw propeller; 103. Vertical plate; 104. Hinge plate; 105. Temperature sensor. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0033] Please see Figures 1-7 This utility model provides a technical solution:

[0034] An asphalt paving machine for highway engineering includes a vehicle body 1, an outer shell 2 fixedly installed on the vehicle body 1, an inner cylinder 3 fixedly installed inside the outer shell 2, a top cover 4 snapped onto the top of the inner cylinder 3, a discharge chute 5 opened at the bottom of the inner cylinder 3, an electric cylinder 6 fixedly installed on the outer wall of the outer shell 2, the bottom of the piston end of the electric cylinder 6 is fixedly connected to the top center of a baffle 7, the baffle 7 controls the opening and closing of the discharge chute 5, and a slant frame 8 is fixedly installed on one side of the bottom outer wall of the outer shell 2.

[0035] In one embodiment of this utility model, a stirring assembly 9 is provided on the vehicle body 1. The stirring assembly 9 includes a servo motor 91. The servo motor 91 is fixedly installed on the outer wall of the other side of the outer shell 2. A rotating shaft 92 is fixedly installed at the output end of the servo motor 91. The two ends of the rotating shaft 92 are rotatably installed inside the side wall of the inner cylinder 3 through sealed bearings. A stirring paddle 93 is fixedly installed on the outer wall of the rotating shaft 92. In addition, there are four sets of stirring paddles 93, and the four sets of stirring paddles 93 are arranged in a linear array with equal spacing, so as to improve the stirring effect. A hot air blower 94 is fixedly installed on the outer wall of the outer shell 2 near the inclined frame 8. An air outlet 95 is fixedly installed at the output end of the hot air blower 94. The air outlet 95 is located inside the outer shell 2. In addition, there are two sets of hot air blowers 94 and air outlet ducts 95, and both sets of hot air blowers 94 and air outlet ducts 95 are mirror images of the vertical center of the inner cylinder 3, and are mirror images of the bottom sides of the inner cylinder 3 to better prevent asphalt cooling. A top cover 96 is fixedly installed on the top of the outer shell 2. A rectangular filter plate 97 is snapped into the inside of the end of the top cover 96 away from the outer shell 2. A bent pipe 98 is fixedly installed inside the arc-shaped inner wall at the top of the inner cylinder 3. The bent pipe 98 penetrates the outer shell 2. Circular filter plates 99 are snapped into the inside of both ends of the bent pipe 98. A baffle 910 is fixedly installed inside the top of the inner cylinder 3. In addition, there are multiple sets of baffles 910, and the multiple sets of baffles 910 are arranged in a linear array with equal spacing to better protect the inner cylinder 3.

[0036] In this embodiment, before asphalt paving, the operator first opens the top cover 4, which is connected to the top of the inner cylinder 3 via a snap-fit ​​mechanism for quick opening and closing. After opening, a dedicated asphalt conveying device is used to transport the asphalt material into the inner cylinder 3, which serves as the core component for asphalt storage and mixing. Next, the electric cylinder 6 is started, and the piston drives the baffle 7 to move downward in a straight line. When the baffle 7 moves downward until it is completely in contact with the discharge chute 5, the discharge chute 5 is sealed to prevent the asphalt material from flowing out prematurely. Subsequently, the servo motor 91 is started, and the rotating shaft 92 drives the stirring paddle 93 to rotate. The asphalt is thoroughly mixed by the rotation of the mixing paddle 93. During the mixing process, the mixing paddle 93 continuously tumbles and shears the asphalt material, effectively preventing the asphalt from becoming too sticky and ensuring its good fluidity. To maintain a suitable temperature for the asphalt and prevent it from cooling and solidifying, the hot air blower 94 is activated. The hot air blower 94 delivers hot air into the outer shell 2 through the air outlet duct 95. The two sets of hot air blowers 94 and air outlet ducts 95 are symmetrically arranged on both sides of the bottom end of the inner cylinder 3, with the vertical center of the inner cylinder 3 as a mirror image. This symmetrical layout allows the hot air to be evenly distributed inside the outer shell 2, effectively improving heat transfer efficiency and ensuring the asphalt remains within a suitable temperature range. Within a suitable operating temperature range, during hot air conveying, the gas inside the outer shell 2 is discharged through the top cover 96 and the rectangular filter plate 97. The rectangular filter plate 97 effectively blocks external debris, such as dust and leaves, from entering the outer shell 2, ensuring a clean internal working environment. The gas inside the inner cylinder 3 is discharged through the bend pipe 98. Both ends of the bend pipe 98 are fitted with circular filter plates 99. The circular filter plates 99 not only prevent external debris from entering the inner cylinder 3 but also prevent asphalt material inside the inner cylinder 3 from entering the bend pipe 98 under the influence of gas flow, thus preventing pipe blockage. Furthermore, the top of the inner cylinder 3 is solidified... A set of equally spaced linear array of baffles 910 is fixedly installed. When asphalt enters the inner cylinder 3, the baffles 910 can disperse the asphalt flow, preventing the asphalt from impacting the bottom of the inner cylinder 3 too concentratedly, thereby extending the service life of the inner cylinder 3 and protecting the structural safety of the equipment. After the asphalt is mixed and reaches the appropriate paving temperature, the electric cylinder 6 is started again, causing the baffle 7 to move upward and open the discharge chute 5. At this time, the asphalt material, after being mixed and heated, enters the inclined frame 8 through the discharge chute 5 by its own gravity and the power generated by mixing, and is finally discharged to the ground, completing the asphalt paving work and significantly improving the paving efficiency.

[0037] In one embodiment of this utility model, an auxiliary component 10 is provided on the outer shell 2. The auxiliary component 10 includes a servo motor 101. The servo motor 101 is fixedly installed on the outer wall of the outer shell 2 near the servo motor 91. An auger paddle 102 is fixedly installed at the output end of the servo motor 101. The stirring paddle 93 and the auger paddle 102 do not intersect to avoid motion interference. The circular cross-section centers of the auger paddle 102 and the discharge trough 5 are coaxial, which can better discharge materials. In addition, a vertical plate 103 is fixedly installed on the inner wall of the inner cylinder 3. Both ends of the auger paddle 102 are rotatably installed inside the side wall of the inner cylinder 3 and inside the vertical plate 103 through sealed bearings, which makes the rotation of the auger paddle 102 more stable. In addition, a hinge plate 104 is hingedly installed at the end of the inclined frame 8 away from the outer shell 2. A temperature sensor 105 is fixedly installed inside the side wall of the outer shell 2. Two sets of temperature sensors 105 are provided to make the temperature data more accurate.

[0038] In this embodiment, when auxiliary asphalt discharge operation is required, the servo motor 101 is started. The output of the servo motor 101 drives the auger paddle 102 to rotate inside the vertical plate 103. The vertical plate 103 is fixedly installed on the inner wall of the inner cylinder 3, providing a stable rotation support structure for the auger paddle 102. The circular cross-section centers of the auger paddle 102 and the discharge trough 5 are coaxial. This design allows the auger paddle 102 to discharge the asphalt material in the inner cylinder 3 from the discharge trough 5 in the best way during rotation. The auger paddle 102 pushes the asphalt material along the spiral direction through the rotational motion of the spiral blades. This not only effectively controls the discharge speed but also ensures the continuity and uniformity of the discharge, allowing the asphalt material to be smoothly discharged to the inclined frame 8. A hinge plate 104 is hinged to the end of the inclined frame 8 away from the outer shell 2. The hinge plate 104 can rotate freely around the hinge point. When the asphalt material is discharged from the inclined frame 8, the hinge plate 104 can resist the asphalt material. The asphalt material is blocked and guided to prevent it from rushing forward due to excessive inertia during discharge, ensuring that the asphalt is laid in the predetermined position. Two sets of temperature sensors 105 are fixedly installed inside the side wall of the outer shell 2. They use high-precision temperature sensing elements to monitor the internal temperature of the inner cylinder 3 in real time. The temperature sensors 105 feed back the monitored temperature data to the controller on the vehicle body 1 in the form of electrical signals. The controller compares and analyzes the received temperature data with the preset temperature range. When the internal temperature of the inner cylinder 3 is lower than the preset lower limit, the controller will automatically increase the output power of the hot air blower 94 to increase the hot air delivery and raise the asphalt temperature. When the temperature is higher than the preset upper limit, the controller will reduce the output power of the hot air blower 94 to reduce the hot air delivery and prevent the asphalt from overheating and changing its performance. Through this precise temperature control mechanism, the asphalt is laid at the appropriate temperature, which greatly improves the practicality of the paving machine and the paving quality.

[0039] In this application, all electrical components are electrically connected to the controller and power supply on the vehicle body 1. The controller is a conventional and known device that can control the electric cylinder 6, servo motor 91, hot air blower 94, servo motor 101, and temperature sensor 105. The outer shell 2 is made of heat-resistant and heat-insulating material. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts, and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0040] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An asphalt paving machine for highway engineering, comprising a vehicle body (1), an outer shell (2) fixedly installed on the vehicle body (1), an inner cylinder (3) fixedly installed inside the outer shell (2), a top cover (4) snapped onto the top of the inner cylinder (3), a discharge chute (5) opened at the bottom of the inner cylinder (3), an electric cylinder (6) fixedly installed on the outer wall of the outer shell (2), the bottom of the piston end of the electric cylinder (6) being fixedly connected to the top center of a baffle (7), the baffle (7) controlling the opening and closing of the discharge chute (5), and a slant frame (8) fixedly installed on one side of the bottom of the outer shell (2), characterized in that: The vehicle body (1) is provided with a stirring assembly (9), the stirring assembly (9) comprising: Servo motor (91), a servo motor (91) is fixedly installed on the outer wall of the other side of the outer shell (2), a rotating shaft (92) is fixedly installed at the output end of the servo motor (91), the two ends of the rotating shaft (92) are rotatably installed inside the side wall of the inner cylinder (3) through sealed bearings, and a stirring paddle (93) is fixedly installed on the outer wall of the rotating shaft (92). A hot air blower (94) is fixedly installed on the outer wall of the outer shell (2) near the inclined frame (8). An air outlet (95) is fixedly installed at the output end of the hot air blower (94). The air outlet (95) is located inside the outer shell (2). Top cover (96), the top of the outer shell (2) is fixedly installed with a top cover (96), a rectangular filter plate (97) is snapped into the end of the top cover (96) away from the outer shell (2), a bent pipe (98) is fixedly installed inside the arc-shaped inner wall at the top of the inner cylinder (3), the bent pipe (98) penetrates the outer shell (2), a circular filter plate (99) is snapped into both ends of the bent pipe (98), and a stop bar (910) is fixedly installed inside the top of the inner cylinder (3).

2. The asphalt paving machine for highway engineering according to claim 1, characterized in that: The stirring paddle (93) is provided in multiple sets, and the multiple sets of stirring paddles (93) are arranged in a linear array with equal spacing.

3. The asphalt paving machine for highway engineering according to claim 1, characterized in that: Two sets of hot air blowers (94) and air outlet ducts (95) are provided, and the two sets of hot air blowers (94) and air outlet ducts (95) are mirror images of the vertical center of the inner cylinder (3) on both sides of the bottom end of the inner cylinder (3).

4. The asphalt paving machine for highway engineering according to claim 1, characterized in that: The stop bar (910) is provided in multiple sets, and the multiple sets of the stop bar (910) are arranged in a linear array with equal spacing.

5. The asphalt paving machine for highway engineering according to claim 1, characterized in that: An auxiliary component (10) is provided on the outer shell (2). The auxiliary component (10) includes a servo motor (101). The servo motor (101) is fixedly installed on the outer wall of the outer shell (2) near the servo motor (91). An auger paddle (102) is fixedly installed at the output end of the servo motor (101). The auger paddle (102) and the discharge trough (5) are coaxial.

6. The asphalt paving machine for highway engineering according to claim 5, characterized in that: The inner wall of the inner cylinder (3) is fixedly installed with a vertical plate (103), and the two ends of the auger paddle (102) are respectively rotatably installed inside the side wall of the inner cylinder (3) and inside the vertical plate (103) through sealed bearings.

7. An asphalt paving machine for highway engineering according to claim 6, characterized in that: The inclined frame (8) is hinged to a hinge plate (104) at one end away from the outer shell (2). A temperature sensor (105) is fixedly installed inside the side wall of the outer shell (2). Multiple sets of temperature sensors (105) are provided.

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