A heating device for asphalt pavement field repair

Abstract

The utility model belongs to bituminous paving device technical field, we propose a kind of heating device for asphalt pavement on-site repair, including paving frame and chassis frame;The top of paving frame is equipped with power generation device, fuel tank and operation platform;Chassis frame is set at the bottom of paving frame, transmission mechanism is provided in chassis frame, transmission mechanism includes transmission shaft and synchronous motor, synchronous motor is connected with transmission shaft, transmission shaft is rotated by synchronous motor, and the outer end of transmission shaft is equipped with driving wheel;The scheme can be flexibly adjusted paving width in range by adjusting mechanism, without replacing equipment parts, saves time of refitting. Three-layer reinforced heat-conducting plate and diamond-shaped supporting rib structure ensure uniform heating, direct contact with pavement heating not only improves heating efficiency, but also effectively prevents pavement aging and natural phenomena caused by direct heating, can be adapted to ordinary asphalt, modified asphalt, recycled asphalt and a variety of materials, adapt to different weather conditions under operation condition.

Description

Technical Field

[0001] This utility model relates to the technical field of asphalt paving equipment, specifically a heating device for on-site repair of asphalt pavement. Background Technology

[0002] In the field of asphalt pavement repair and paving, traditional paving equipment generally suffers from the following problems:

[0003] 1) Existing devices mostly adopt a fixed width paving structure, or require the width to be adjusted by replacing pavers of different specifications. The replacement process is time-consuming and labor-intensive (each replacement takes 2-4 hours), and cannot dynamically adapt to changes in road width during operation (such as curves, ramps and other special road sections), resulting in low construction efficiency, and is especially unsuitable for emergency repair scenarios.

[0004] 2) Traditional heated slabs have low heat conduction efficiency and uneven temperature distribution (the temperature difference on the slab surface can reach more than 10℃), which makes it difficult to meet the temperature-sensitive construction requirements of new materials such as modified asphalt and recycled asphalt (e.g., modified asphalt needs to be precisely controlled at 170±5℃), further reducing work efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a heating device for on-site repair of asphalt pavement, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heating device for on-site repair of asphalt pavement, comprising a paving vehicle frame and a chassis frame;

[0007] The top of the paving frame is equipped with a generator, a fuel tank and an operating platform; the chassis frame is located at the bottom of the paving frame, and a transmission mechanism is installed inside the chassis frame. The transmission mechanism includes a drive shaft and a synchronous motor. The synchronous motor is connected to the drive shaft and drives the drive shaft to rotate. A drive wheel is installed at the outer end of the drive shaft.

[0008] The bottom of the chassis frame is equipped with multiple heating plates. An adjustment mechanism is installed between the chassis frame and the heating plates. The adjustment mechanism includes an adjustment shaft, a connecting rod, and a chassis connecting bracket. There are two chassis connecting brackets, one on the left and one on the right, and the heating plates are distributed at the bottom of the chassis connecting bracket.

[0009] One end of the adjusting shaft is equipped with a drive motor as a power source; a connecting rod is installed on the top of the chassis connecting bracket. The connecting rod has multiple rod sections, and a spherical connecting shaft is provided at the joint of the rod sections; one end of the connecting rod extends to the adjusting shaft, and a worm gear is installed at the end of the adjusting shaft and the end of the connecting rod to perform transmission.

[0010] Preferably, the drive motor drives the adjusting shaft to rotate, and then the adjusting shaft drives the connecting rod to move, with one side of the connecting rod moving closer to the other side, adjusting the paving width according to the distance of the approach; a universal coupling is installed between the chassis connecting bracket and the connecting rod, and universal couplings are installed at both ends of the universal coupling to assist rotation; a displacement sensor is installed on the connecting rod.

[0011] Preferably, a heat insulation plate is installed at the bottom of the chassis frame, and the heat insulation plate is located between the heating plate and the chassis connecting bracket; the chassis frame adopts a sealed structure, and an air duct is opened in the inner cavity of the chassis frame; an air duct interface is provided on the left side of the chassis frame, and an air valve is installed in the air duct interface and connected to the air duct; an air duct outlet is installed on the right side of the chassis frame, and a negative pressure regulating valve is installed in the air duct outlet and connected to the air duct.

[0012] Preferably, the heating and ironing plate is composed of three layers of reinforced heat-conducting plates, with diamond-shaped support ribs between each layer of reinforced heat-conducting plates, and support rods connected in series at both ends of each layer of reinforced heat-conducting plates; the inner cavity of the heating and ironing plate is provided with interconnected heat-conducting air channels.

[0013] Preferably, a pre-raking loosening device is installed at the right end of the chassis frame, and an upwardly extending support shaft is installed on the chassis frame near the pre-raking loosening device, with a tapered roller bearing provided at the connection position between the pre-raking loosening device and the support shaft.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This solution allows for flexible adjustment of the paving width within a specified range via an adjustment mechanism, eliminating the need to replace equipment parts and saving changeover time.

[0016] The three-layer reinforced heat-conducting plate and diamond-shaped support rib structure ensure uniform heating and are compatible with various materials such as ordinary asphalt, modified asphalt, and recycled asphalt, adapting to different working conditions under different climates. The heat-conducting air duct supports various heat source media such as hot air and hot oil, and can quickly switch heating modes, resulting in rapid temperature rise and good heat conduction. Attached Figure Description

[0017] Figure 1 This is a front view of the present utility model;

[0018] Figure 2 This is a top view of the chassis frame of this utility model;

[0019] Figure 3 This is a schematic diagram of the heating and ironing plate of this utility model.

[0020] In the diagram: 1. Paver frame, 2. Generator, 3. Fuel tank, 4. Operating platform, 5. Chassis frame, 6. Air duct, 7. Air duct interface, 8. Spherical connecting shaft, 9. Universal coupling connecting rod, 10. Heat insulation plate, 11. Heated slab, 12. Negative pressure regulating valve, 13. Tapered roller bearing, 14. Pre-raking, 15. Adjusting shaft, 16. Synchronous motor, 17. Drive shaft, 18. Linking rod, 19. Displacement sensor, 20. Chassis connecting bracket, 21. Universal coupling; 23. Reinforced heat-conducting plate, 24. Heat-conducting air duct, 25. Support rod. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Example:

[0024] Please see Figure 1-3 The present invention provides the following technical solution: a heating device for on-site repair of asphalt pavement, including a paving frame 1 and a chassis frame 5; a power generation device 2, a fuel tank 3 and an operating platform 4 are installed on the top of the paving frame 1;

[0025] The chassis frame 5 is set at the bottom of the paving frame 1. The chassis frame 5 is equipped with a transmission mechanism, which includes a drive shaft 17 and a synchronous motor 16. The synchronous motor 16 is connected to the drive shaft 17 and drives the drive shaft 17 to rotate. A drive wheel is installed at the outer end of the drive shaft 17.

[0026] Multiple heating plates 11 are installed at the bottom of the chassis frame 5. An adjustment mechanism is installed between the chassis frame 5 and the heating plates 11. The adjustment mechanism includes an adjustment shaft 15, a connecting rod 18 and a chassis connecting bracket 20. The chassis connecting bracket 20 has two parts, left and right, and the heating plates 11 are distributed at the bottom of the chassis connecting bracket 20.

[0027] A drive motor is installed at one end of the adjusting shaft 15 as a power source; a connecting rod 18 is installed on the top of the chassis connecting bracket 20. The connecting rod 18 has multiple rod sections, and a ball connecting shaft 8 is provided at the joint of the rod sections; one end of the connecting rod 18 extends to the adjusting shaft 15, and a worm gear that meshes with each other is installed at the end of the adjusting shaft 15 and the end of the connecting rod 18 for transmission.

[0028] The drive motor drives the adjustment shaft 15 to rotate, and then the adjustment shaft 15 drives the connecting rod 18 to move. One side of the connecting rod 18 moves closer to the other side of the connecting rod 18, and the paving width is adjusted according to the distance of the approach.

[0029] A universal coupling rod 9 is installed between the chassis connecting bracket 20 and the connecting rod 18, and universal couplings 21 are installed at both ends of the universal coupling rod 9 to assist rotation.

[0030] A heat insulation plate 10 is installed at the bottom of the chassis frame 5, and the heat insulation plate 10 is located between the heating plate 11 and the chassis connecting bracket 20; the chassis frame 5 adopts a sealed structure, and an air duct 6 is opened in the inner cavity of the chassis frame 5; an air duct interface 7 is provided on the left side of the chassis frame 5, and an air valve is installed in the air duct interface 7 and connected to the air duct 6; an air duct outlet is installed on the right side of the chassis frame 5, and a negative pressure regulating valve 12 is installed in the air duct outlet and connected to the air duct 6 to assist in heat dissipation or collect exhaust gas and maintain the system temperature stability;

[0031] A displacement sensor 19 is installed on the connecting rod 18 to monitor the displacement distance of the connecting rod 18;

[0032] The heating plate 11 is composed of three layers of reinforced heat-conducting plates 23, with diamond-shaped support ribs between each layer of reinforced heat-conducting plates 23. Support rods 25 are provided at both ends of each layer of reinforced heat-conducting plates 23 for series support. The inner cavity of the heating plate 11 is provided with interconnected heat-conducting air channels 24.

[0033] A pre-raking 14 is installed at the right end of the chassis frame 5. An upwardly extending support shaft is installed on the chassis frame 5 near the pre-raking 14, and a tapered roller bearing 13 is provided at the connection position between the pre-raking 14 and the support shaft.

[0034] Working principle: The heating plate 11 consists of three layers of reinforced heat-conducting plates 23, which are connected by diamond-shaped support ribs to enhance structural strength and form a uniform heat conduction path. The heat-conducting air channel 24 introduces a high-temperature medium to generate heat, which is then transferred to the asphalt pavement through the heat-conducting plates 23. The heating plate 11 preheats the paving area to avoid overheating and aging of the asphalt pavement caused by direct infrared heat. The new pavement is continuously repaired by the overall movement of the paving frame 1 and the compaction and shaping by the road roller.

[0035] The drive motor drives the adjustment shaft 15 to rotate, which in turn drives the connecting rod 18 to move, so that the connecting rods 18 on both sides move towards the middle or to both sides, thereby adjusting the paving width ratio; the displacement sensor 19 monitors the displacement distance of the connecting rod 18 in real time and feeds it back to the operating table 4.

[0036] When used in a road surface in-situ heat regeneration and reheating unit, the pre-raking loosening 14 contacts the road surface and loosens the old road surface through a translational movement to increase heat exchange efficiency.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0038] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heating device for on-site repair of asphalt pavement, comprising a paving vehicle frame (1) and a chassis frame (5), characterized in that: The top of the paving frame (1) is equipped with a generator (2), a fuel tank (3) and an operating platform (4); the chassis frame (5) is located at the bottom of the paving frame (1), and a transmission mechanism is provided inside the chassis frame (5). The transmission mechanism includes a drive shaft (17) and a synchronous motor (16). The synchronous motor (16) is connected to the drive shaft (17), and the synchronous motor (16) drives the drive shaft (17) to rotate. A drive wheel is installed at the outer end of the drive shaft (17). The bottom of the chassis frame (5) is equipped with multiple heating plates (11). An adjustment mechanism is installed between the chassis frame (5) and the heating plates (11). The adjustment mechanism includes an adjustment shaft (15), a connecting rod (18), and a chassis connecting bracket (20). The chassis connecting bracket (20) has two parts, left and right, and the heating plates (11) are distributed at the bottom of the chassis connecting bracket (20). One end of the adjusting shaft (15) is equipped with a drive motor as a power source; a connecting rod (18) is installed on the top of the chassis connecting bracket (20). The connecting rod (18) has multiple rod sections, and a spherical connecting shaft (8) is provided at the joint of the rod sections; one end of the connecting rod (18) extends to the adjusting shaft (15), and the end of the adjusting shaft (15) and the end of the connecting rod (18) are equipped with a worm gear that meshes with each other for transmission.

2. The heating device for on-site repair of asphalt pavement according to claim 1, characterized in that: The drive motor drives the adjustment shaft (15) to rotate, and then the adjustment shaft (15) drives the connecting rod (18) to move. One side of the connecting rod (18) moves closer to the other side of the connecting rod (18), and the paving width is adjusted according to the distance of the closer movement. A universal coupling rod (9) is installed between the chassis connecting bracket (20) and the connecting rod (18), and universal couplings (21) are installed at both ends of the universal coupling rod (9) to assist rotation. A displacement sensor (19) is installed on the connecting rod (18).

3. The heating device for on-site repair of asphalt pavement according to claim 1, characterized in that: The bottom of the chassis frame (5) is equipped with a heat insulation plate (10), and the heat insulation plate (10) is located between the heating plate (11) and the chassis connecting bracket (20); the chassis frame (5) adopts a sealed structure, and an air duct (6) is opened in the inner cavity of the chassis frame (5); an air duct interface (7) is provided on the left side of the chassis frame (5), and an air valve is installed in the air duct interface (7) and connected to the air duct (6); an air duct outlet is installed on the right side of the chassis frame (5), and a negative pressure regulating valve (12) is installed in the air duct outlet and connected to the air duct (6).

4. The heating device for on-site repair of asphalt pavement according to claim 1, characterized in that: The heating plate (11) is composed of three layers of reinforced heat-conducting plates (23) in the upper, middle and lower parts, and a diamond-shaped support rib is provided between each layer of reinforced heat-conducting plates (23). Support rods (25) are provided at both ends of each layer of reinforced heat-conducting plates (23) for series support. The inner cavity of the heating plate (11) is provided with interconnected heat-conducting air channels (24).

5. A heating device for on-site repair of asphalt pavement according to claim 1, characterized in that: The right end of the chassis frame (5) is equipped with a pre-raking loosening (14), and an upwardly extending support shaft is installed on the chassis frame (5) near the pre-raking loosening (14). A tapered roller bearing (13) is provided at the connection position between the pre-raking loosening (14) and the support shaft.

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