Asphalt pavement rolling device

Abstract

The utility model discloses an asphalt pavement rolling device, which relates to the technical field of road construction and comprises a rack, a pre-pressing roller and a main pressing roller are rotatably connected to the front side and the rear side of the rack through bearings, two carrying columns are fixed at the top of the inner side of the rack, a heating box is fixed at the bottom ends of the two carrying columns, and the heating box is positioned between the pre-pressing roller and the main pressing roller. The heating box is slidably sleeved with an extension pipe, first fixing blocks are fixed to the left side and the right side of the extension pipe, and second fixing blocks are fixed to the left side and the right side of the heating box. The air supply assembly is used for supplying air into the heating box, the electric heating wire is used for heating air entering the heating box, so that the air is heated, the heated airflow is guided out along the bottom of the heating box, asphalt concrete can be heated and prevented from being solidified, and then the asphalt concrete can be leveled orderly under the rolling action of the main pressing roller; the condition that the asphalt concrete cannot be leveled due to the influence of operation time difference and climate is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of road construction, in particular to an asphalt pavement rolling device. Background Art

[0002] Asphalt concrete road refers to a road with asphalt concrete as the surface layer. It is a mixture made by manually selecting mineral materials with a certain graded composition (crushed stone or crushed gravel, stone chips or sand, mineral powder, etc.) and a certain proportion of road asphalt materials under strictly controlled conditions. When paving asphalt roads, asphalt is transported by transport vehicles, and then manually or automatically unloaded onto the road to be paved. The asphalt pavement is then rolled by a rolling vehicle at the rear. Asphalt concrete pavement has many excellent properties. It can not only withstand the repeated effects of vehicle loads, but also has good durability, aging resistance and crack resistance to resist the effects of natural factors, and its performance is very stable.

[0003] The common asphalt pavement rolling device is a road roller, which is a vehicle with a roller in front. The vehicle drives on the road surface and rolls the road surface with the roller. When in use, the asphalt concrete needs to be rolled before it is completely cooled. In a cold environment, the asphalt concrete cools too quickly, and the rolling device is easily affected by the time difference in operation and cannot quickly level the asphalt concrete, resulting in poor flatness of the laid asphalt pavement, which affects subsequent use. Utility Model Content

[0004] The purpose of the present application is to provide an asphalt pavement rolling device to solve the problem that the existing asphalt pavement rolling device proposed in the above background technology needs to roll the asphalt concrete when it is in use before it is completely cooled. In a cold environment, the asphalt concrete cools too quickly, and the rolling device is easily affected by the time difference in operation and cannot quickly level the asphalt concrete, resulting in poor flatness of the laid asphalt pavement, affecting subsequent use.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an asphalt pavement rolling device, comprising a frame, wherein the front and rear sides of the frame are rotatably connected with a pre-pressing roller and a main pressing roller through bearings, two supporting columns are fixed on the top of the inner side of the frame, and a heating box is fixed at the bottom ends of the two supporting columns, the heating box is located between the pre-pressing roller and the main pressing roller, and an extension tube is slidably sleeved on the outside of the heating box, a first fixed block is fixed on the left and right sides of the extension tube, a second fixed block is fixed on the left and right sides of the heating box, and a plurality of springs are fixed between the first fixed block and the second fixed block on the same side, and the plurality of springs are linearly arranged from front to back, two heating wires are arranged inside the heating box, and a plurality of auxiliary wheels are rotatably connected to the front and rear sides of the extension tube through bearings, a cooling assembly is arranged on the frame, and an air supply assembly is arranged on the top of the heating box, and the air supply assembly is used to supply air to the inside of the heating box, and the cooling assembly is used to cool the asphalt pavement after rolling.

[0006] Furthermore, a diverter plate is fixed between the front and rear inner walls of the heating box, and the diverter plate is located above the two heating wires.

[0007] Furthermore, two traction blocks are fixed on the top of the frame.

[0008] Furthermore, the air supply assembly includes a fan, which is fixedly installed on the top of the heating box, the air outlet of the fan is fixedly connected to an air supply pipe, the other end of the air supply pipe extends to the interior of the heating box, and the air inlet of the fan is fixedly connected to an air duct.

[0009] Furthermore, the cooling assembly includes a heat exchange box and a heat exchange roller, the heat exchange box is fixedly installed on the top of the frame, both ends of the heat exchange roller are fixedly connected with fixed pipes, the other end of the fixed pipe is provided with a rotating joint, and the joint between the fixed pipe and the frame is rotatably connected through a bearing.

[0010] Furthermore, a first water pipe is provided at the other end of one of the rotary joints, a second water pipe is provided at the other end of the other rotary joint, a water pump is fixedly installed on the heat exchange box, the other end of the second water pipe is connected to the water inlet of the water pump, the water outlet of the water pump is fixedly connected to the third water pipe, a serpentine pipe is fixedly connected between the first water pipe and the third water pipe, and the serpentine pipe is located inside the heat exchange box.

[0011] In summary, the technical effects and advantages of the utility model are:

[0012] 1. In the utility model, an air supply assembly is used to supply air to the heating box, and the electric heating wire heats the air entering the heating box, so that the air is heated. The heated airflow is led out along the bottom of the heating box, which can heat the asphalt concrete and prevent the asphalt concrete from solidifying. Subsequently, it can be leveled in an orderly manner under the rolling action of the main pressure roller, avoiding the asphalt concrete from being unable to be leveled due to the operation time difference and the influence of climate.

[0013] 2. In the utility model, the asphalt concrete is pre-leveled by using a pre-pressing roller, so that the up and down fluctuation amplitude of the auxiliary wheel when traveling on the asphalt pavement is reduced, and the auxiliary wheels on both sides of the extension tube are pushed close to the asphalt pavement with the help of a number of springs. The extension tube can extend and conduct the hot air flow discharged from the heating box, so that the hot air flow can heat the asphalt concrete more stably and concentratedly within a suitable range, thereby ensuring that the asphalt concrete has a better effect when being leveled by the main pressure roller.

[0014] 3. In the utility model, a water pump is used to drive the water in the cooling component to circulate, and the heat exchange roller is used to absorb the waste heat of the asphalt pavement to accelerate the solidification of the asphalt pavement after leveling. The air introduced by the air supply component exchanges heat with the serpentine tube when passing through the serpentine tube, which can not only speed up the cooling efficiency of the water in the serpentine tube, but also increase its own temperature to achieve partial recovery of waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of an asphalt pavement rolling device in an embodiment of the present application;

[0017] Figure 2 A longitudinal cross-sectional view of a frame in an embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of the internal structure of the heating box and the extension tube in the embodiment of the present application;

[0019] Figure 4 A diagram showing the connection relationship between the cooling component and the air supply component in the embodiment of the present application;

[0020] Figure 5 It is a schematic diagram of the structure of the cooling component in the embodiment of the present application.

[0021] In the figure: 1. frame; 2. pre-pressing roller; 3. main pressing roller; 4. supporting column; 5. heating box; 6. extension pipe; 7. first fixed block; 8. second fixed block; 9. spring; 10. heating wire; 11. auxiliary wheel; 12. diverter plate; 13. traction block; 14. fan; 15. air supply pipe; 16. air induced pipe; 17. heat exchange box; 18. heat exchange roller; 19. fixed pipe; 20. rotary joint; 21. first water pipe; 22. second water pipe; 23. water pump; 24. third water pipe; 25. serpentine pipe. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 of the embodiments.

[0023] Example: Reference Figure 1-5 The asphalt pavement rolling device shown in the figure comprises a frame 1, the front and rear sides of the frame 1 are rotatably connected with a pre-pressing roller 2 and a main pressing roller 3 through bearings, two supporting columns 4 are fixed to the top of the inner side of the frame 1, a heating box 5 is fixed to the bottom end of the two supporting columns 4, an extension tube 6 is slidably sleeved on the outside of the heating box 5, a first fixing block 7 is fixed to the left and right sides of the extension tube 6, a second fixing block 8 is fixed to the left and right sides of the heating box 5, a plurality of springs 9 are fixed between the first fixing block 7 and the second fixing block 8 on the same side, and the plurality of springs 9 are linearly arranged from front to back, two electric heating wires 10 are arranged inside the heating box 5, and the extension tube 6 is provided with a plurality of electric heating wires 10. The front and rear sides are both rotatably connected with a plurality of auxiliary wheels 11 through bearings. A cooling assembly is provided on the frame 1. An air supply assembly is provided on the top of the heating box 5. The air supply assembly is used to supply air to the interior of the heating box 5. A diverter plate 12 is fixed between the front and rear inner walls of the heating box 5. The diverter plate 12 is located above the two heating wires 10 and is used to divert the air sent into the heating box 5 by the air supply assembly so that it can be better heated by the heating wires 10. The cooling assembly is used to cool the asphalt pavement after rolling. Two traction blocks 13 are fixed on the top of the frame 1. The two traction blocks 13 are used to connect the traction equipment so that the traction equipment can drive the device to move;

[0024] The air supply assembly is used to supply air to the heating box 5, and the electric heating wire 10 heats the air entering the heating box 5 to increase the temperature of the air. The heated airflow is discharged along the bottom of the heating box 5, which can heat the asphalt concrete and prevent the asphalt concrete from solidifying. Subsequently, it can be leveled in an orderly manner under the rolling action of the main pressure roller 3. The asphalt concrete is pre-leveled by the pre-pressure roller 2, so that the up and down fluctuation amplitude of the auxiliary wheel 11 is reduced when it travels on the asphalt pavement. With the help of multiple springs 9, the auxiliary wheels 11 on both sides of the extension tube 6 are pushed close to the asphalt pavement. The extension tube 6 can extend and conduct the hot air flow discharged from the heating box 5, so that the hot air flow can heat the asphalt concrete more stably and concentratedly within a suitable range, thereby ensuring that the asphalt concrete has a better effect when being leveled by the main pressure roller 3.

[0025] The air supply assembly includes a fan 14, which is fixedly mounted on the top of the heating box 5. The air outlet of the fan 14 is fixedly connected to an air supply pipe 15, the other end of the air supply pipe 15 extends to the interior of the heating box 5, and the air inlet of the fan 14 is fixedly connected to an air duct 16.

[0026] The outside air is introduced along the air duct 16 by using the fan 14 , and then the introduced air is sent into the heating box 5 along the air supply duct 15 .

[0027] Wherein, the cooling assembly includes a heat exchange box 17 and a heat exchange roller 18, the heat exchange box 17 is fixedly installed on the top of the frame 1, the other end of the induced draft duct 16 extends to the interior of the heat exchange box 17, the heat exchange roller 18, the main pressure roller 3, the heating box 5 and the pre-pressure roller 2 are arranged from left to right, both ends of the heat exchange roller 18 are fixedly connected with a fixed pipe 19, the other end of the fixed pipe 19 is connected with a rotary joint 20, the joint of the fixed pipe 19 and the frame 1 is rotatably connected through a bearing, the other end of one rotary joint 20 is connected with a first water pipe 21, the other end of the other rotary joint 20 is connected with a second water pipe 22, a water pump 23 is fixedly installed on the heat exchange box 17, the other end of the second water pipe 22 is connected with the water inlet of the water pump 23, the water outlet of the water pump 23 is fixedly connected with a third water pipe 24, the first water pipe 21 and the third water pipe 24 are fixedly connected with a serpentine pipe 25, and the serpentine pipe 25 is located inside the heat exchange box 17;

[0028] The water pump 23 is used to drive the water in the cooling component to circulate, and the heat exchange roller 18 is used to absorb the residual heat of the asphalt pavement to accelerate the solidification of the asphalt pavement after leveling. The air introduced by the air supply component exchanges heat with the serpentine tube 25 when passing through the serpentine tube 25, which can not only speed up the cooling efficiency of the water in the serpentine tube 25, but also increase its own temperature.

[0029] Working principle of this utility model:

[0030] The traction block 13 is fixed on the traction equipment, and the traction equipment is used to pull the device to move. When the device moves, the pre-pressing roller 2 will pre-roll the asphalt concrete along the way to make the asphalt concrete initially leveled, and the electric heating wire 10, the fan 14 and the water pump 23 are energized so that the fan 14 sends air to the heating box 5. The air in the heating box 5 is heated by the two electric heating wires 10, so that the air is discharged from the bottom of the heating box 5 after heating. The spring 9 pushes the auxiliary wheel 11 close to the ground, and the auxiliary wheel 11 supports the extension pipe 6 at a certain distance from the ground. The extension pipe 6 transports the airflow discharged from the heating box 5, so that the hot airflow heats the asphalt concrete to prevent the asphalt concrete from solidifying. As the traction equipment continues to move, the main pressure roller 3 can roll the heated asphalt concrete to make the asphalt road surface flat;

[0031] During the movement of the device, the water pump 23 drives the water in the cooling component to circulate, and with the help of the heat exchange roller 18, the waste heat of the asphalt pavement is absorbed to accelerate the solidification of the asphalt pavement after leveling. The air introduced by the fan 14 exchanges heat with the serpentine tube 25 when passing through the serpentine tube 25, which can not only speed up the cooling efficiency of the water in the serpentine tube 25, but also increase its own temperature to realize the waste heat recovery of the asphalt pavement.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An asphalt pavement rolling device, comprising a frame (1), characterized in that: The front and rear sides of the frame (1) are rotatably connected to a pre-pressing roller (2) and a main pressing roller (3) via bearings; two support columns (4) are fixed to the top of the inner side of the frame (1); a heating box (5) is fixed to the bottom ends of the two support columns (4); the heating box (5) is located between the pre-pressing roller (2) and the main pressing roller (3); an extension tube (6) is slidably sleeved on the outside of the heating box (5); a first fixing block (7) is fixed to the left and right sides of the extension tube (6); a second fixing block (8) is fixed to the left and right sides of the heating box (5); and a second fixing block (9) is fixed to the left and right sides of the heating box (5); and a second fixing block (10) is fixed to the left and right sides of the heating box (5). A plurality of springs (9) are fixed between the first fixing block (7) and the second fixing block (8), and the plurality of springs (9) are arranged linearly from front to back. Two electric heating wires (10) are arranged inside the heating box (5). The front and rear sides of the extension tube (6) are rotatably connected to a plurality of auxiliary wheels (11) via bearings. A cooling component is arranged on the frame (1). An air supply component is arranged on the top of the heating box (5). The air supply component is used to supply air to the interior of the heating box (5). The cooling component is used to cool the asphalt pavement after rolling.

2. The asphalt pavement rolling device according to claim 1, characterized in that: A diverter plate (12) is fixed between the front and rear inner walls of the heating box (5), and the diverter plate (12) is located above the two heating wires (10).

3. The asphalt pavement rolling device according to claim 1, characterized in that: Two traction blocks (13) are fixed on the top of the frame (1).

4. The asphalt pavement rolling device according to claim 1, characterized in that: The air supply assembly comprises a fan (14), wherein the fan (14) is fixedly mounted on the top of the heating box (5), an air outlet of the fan (14) is fixedly connected to an air supply pipe (15), the other end of the air supply pipe (15) extends into the interior of the heating box (5), and an air inlet of the fan (14) is fixedly connected to an air duct (16).

5. The asphalt pavement rolling device according to claim 1, characterized in that: The cooling assembly comprises a heat exchange box (17) and a heat exchange roller (18); the heat exchange box (17) is fixedly mounted on the top of the frame (1); both ends of the heat exchange roller (18) are fixedly connected to a fixed pipe (19); the other end of the fixed pipe (19) is provided with a rotary joint (20); and the fixed pipe (19) and the frame (1) are rotatably connected at a joint via a bearing.

6. The asphalt pavement rolling device according to claim 5, characterized in that: A first water pipe (21) is provided at the other end of one of the rotary joints (20), and a second water pipe (22) is provided at the other end of the other rotary joint (20). A water pump (23) is fixedly mounted on the heat exchange box (17). The other end of the second water pipe (22) is connected to a water inlet of the water pump (23). A third water pipe (24) is fixedly connected to a water outlet of the water pump (23). A serpentine pipe (25) is fixedly connected between the first water pipe (21) and the third water pipe (24). The serpentine pipe (25) is located inside the heat exchange box (17).

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