A heating device for asphalt concrete construction

Abstract

This utility model discloses a heating device for asphalt concrete construction, including a base, a support fixedly connected to the upper center of the base, a heating box fixedly connected inside the support, a feed inlet penetrating one end of the outer side of the heating box, a drive box fixedly connected to the top of the heating box, a motor fixedly connected to one end of the upper side of the drive box, and a rotating shaft connected inward through the drive box and the heating box via a coupling. This device significantly improves heating efficiency and uniformity through a bidirectional stirring structure, and uses a combination of gear and belt transmission to drive two sets of counter-rotating stirring rods, so that the asphalt concrete is fully agitated in the heating box, effectively expanding the heating area, avoiding material clumping or local overheating, and ensuring heating quality and construction reliability.

Description

Technical Field

[0001] This utility model relates to the field of concrete construction technology, and in particular to a heating device for asphalt concrete construction. Background Technology

[0002] Asphalt concrete is a commonly used road construction material. It is made by mixing asphalt as a binder with mineral aggregates of different particle sizes (such as crushed stone, sand, and mineral powder) in a certain proportion at high temperature and then compacting them. It has the characteristics of high strength, good durability, comfortable driving, and easy maintenance. It is widely used in the paving of various road surfaces such as highways, airport runways, and parking lots, and is an indispensable key material for modern transportation infrastructure.

[0003] In current asphalt concrete construction heating, uneven heating is a common problem. Traditional equipment has insufficient mixing capacity, which easily leads to material clumping and localized coking. It relies on manual feeding and discharging operations, which are labor-intensive and inefficient. The equipment is mostly fixed or inconvenient to move, making it difficult to flexibly relocate to different construction sites. At the same time, open-type operations cause a large amount of heat loss, resulting in low energy utilization. Utility Model Content

[0004] The purpose of this utility model is to provide a heating device for asphalt concrete construction, which solves the problem of uneven heating that is common in the heating of asphalt concrete during construction in the prior art, and the problem that the insufficient mixing capacity of traditional equipment easily leads to material agglomeration and local coking.

[0005] To achieve the above objectives, a heating device for asphalt concrete construction is provided, comprising a base, a bracket fixedly connected to the upper center of the base, a heating box fixedly connected inside the bracket, a feed inlet extending through one end of the outer side of the heating box, a drive box fixedly connected to the top of the heating box, a motor fixedly connected to one end of the upper side of the drive box, and a rotating shaft connected inward through the drive box and the heating box via a coupling.

[0006] The drive box 1 and the upper inner side of the heating box are rotatably connected to a rotating shaft 2, and the rotating shaft 1 passes through the interior of the rotating shaft 2. A gear 1 is fixedly connected to the rotating shaft 1. A rotating rod is rotatably connected to the other inner side of the drive box 1. A gear 2 is fixedly connected to the rotating rod. The gear 1 and gear 2 mesh with each other.

[0007] According to the heating device for asphalt concrete construction, a pulley is fixedly connected to the second rotating shaft, and a pulley is fixedly connected to the second rotating rod. A belt is fitted onto the pulley and the second pulley.

[0008] According to the heating device for asphalt concrete construction, both the first and second rotating shafts are fixedly connected to several sets of stirring rods on the heating box section.

[0009] According to the heating device for asphalt concrete construction, the heating box has a heating chamber inside, and a discharge port is provided through the bottom of the heating box. A solenoid valve is installed inside the discharge port.

[0010] According to the heating device for asphalt concrete construction, a conveying box is provided through the bottom of the discharge port, and a drive box is fixedly connected to the outer end of the conveying box.

[0011] According to the heating device for asphalt concrete construction, a spiral conveying blade is rotatably connected inside the conveying box, and a driving assembly is installed inside the drive box, which is connected to the spiral conveying blade.

[0012] According to the heating device for asphalt concrete construction, a handle is fixedly connected to the upper left end of the base, and casters are provided at the four lower ends of the base.

[0013] According to the heating device for asphalt concrete construction, the base has fixed blocks at both ends on the outer side, and the fixed blocks have screws threaded into their internal parts. The bottom of the screws is rotatably connected to a support plate.

[0014] The above-mentioned solution has the following beneficial effects:

[0015] 1. This device significantly improves heating efficiency and uniformity through a bidirectional stirring structure. It uses a combination of gear and belt transmission to drive two sets of counter-rotating stirring rods, which fully agitates the asphalt concrete in the heating box, effectively expanding the heating area, avoiding material clumping or local overheating, and ensuring heating quality and construction reliability.

[0016] 2. This device integrates automated conveying and flexible mobility functions, making it highly practical. The screw conveyor mechanism enables the closed-loop continuous discharge of heated materials, reducing heat loss. Combined with casters and an adjustable support structure, it facilitates site relocation while ensuring operational stability, balancing convenient movement with safe operation.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a schematic diagram of the overall structure of a heating device for asphalt concrete construction according to the present invention;

[0020] Figure 2This is a schematic diagram of the internal structure of the drive box of a heating device for asphalt concrete construction according to this utility model.

[0021] Figure 3 This is a schematic diagram of the mixing structure of a heating device for asphalt concrete construction according to the present invention;

[0022] Figure 4 This is a cross-sectional view of a heating device for asphalt concrete construction according to the present invention.

[0023] Legend:

[0024] 1. Base; 2. Casters; 3. Fixing block; 4. Screw; 5. Support plate; 6. Conveyor box; 7. Solenoid valve; 8. Discharge port; 9. Bracket; 10. Heating box; 11. Drive box one; 12. Motor; 13. Feed port; 14. Handle; 15. Drive box two; 16. Shaft one; 17. Gear one; 18. Pulley one; 19. Shaft two; 20. Belt; 21. Pulley two; 22. Rotating rod; 23. Gear two; 24. Stirring rod; 25. Heating chamber; 26. Spiral conveyor blades. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-4 This utility model discloses a heating device for asphalt concrete construction, including a base 1, a bracket 9 fixedly connected to the upper center of the base 1, a heating box 10 fixedly connected inside the bracket 9, a feed inlet 13 penetrating one end of the outer side of the heating box 10, a drive box 11 fixedly connected to the top of the heating box 10, a motor 12 fixedly connected to the upper end of the drive box 11, and a rotating shaft 16 connected inward through the output end of the motor 12 via a coupling through the drive box 11 and the heating box 10. Asphalt concrete material can be fed into the heating box 10 for heating through the feed inlet 13.

[0027] A rotating shaft 19 is rotatably connected to the upper inner side of the drive box 11 and the heating box 10, with the rotating shaft 16 passing through the interior of the rotating shaft 19. A gear 17 is fixedly connected to the rotating shaft 16. A rotating rod 22 is rotatably connected to the other inner side of the drive box 11, with a gear 23 fixedly connected to the rotating rod 22. Gear 17 and gear 23 mesh with each other. A pulley 18 is fixedly connected to the rotating shaft 19, and a pulley 21 is fixedly connected to the rotating rod 22. Belts 18 and 21 are fitted with leather straps. Several sets of stirring rods 24 are fixedly connected to the heating box 10, including the belt 20, the first rotating shaft 16, and the second rotating shaft 19. When the top motor 12 is started, the first rotating shaft 16 and the first gear 17 inside will rotate. Then, under the meshing action, the second gear 23 and the rotating rod 22 will rotate. Then, through the transmission of the two pulleys, the second rotating shaft 19 will rotate, ensuring that the two sets of stirring rods inside the heating box 10 rotate in opposite directions, so as to maximize the stirring of the asphalt concrete material inside.

[0028] The heating chamber 10 has a heating cavity 25 inside, and a discharge port 8 is provided through the bottom of the heating chamber 10. A solenoid valve 7 is installed inside the discharge port 8. An electric heating wire is installed inside the heating cavity 25. The electric heating wire can realize the heating operation of the internal material, and the heated material can be discharged into the conveying box 6 below through the discharge port 8 to complete the automated conveying operation.

[0029] A conveying box 6 is installed through the bottom of the discharge port 8. A drive box 2 15 is fixedly connected to the outer end of the conveying box 6. A spiral conveying blade 26 is rotatably connected inside the conveying box 6. A drive assembly is installed inside the drive box 2 15. The drive assembly is connected to the spiral conveying blade 26. After heating is completed, the solenoid valve 7 at the bottom is opened, allowing the material to enter the conveying box 6 through the discharge port 8. Finally, the drive element inside the drive box 2 15 is activated to rotate the spiral conveying blade 26, which sends the heated and mixed asphalt concrete outward, improving the efficiency of the device.

[0030] A handle 14 is fixedly connected to the upper left end of the base 1. Universal wheels 2 are provided at the four ends of the lower part of the base 1. Fixed blocks 3 are fixedly connected to the two outer ends of the base 1. The internal threads of the fixed blocks 3 are fitted with screws 4. The bottom of the screws 4 is rotatably connected to a support plate 5. By setting universal wheels 2 and handle 14, it is convenient for workers to move the device and improve the convenience of the device. Secondly, the universal wheels 2 have a self-locking structure, which can ensure the stability during use. The support plates 5 at both ends can move downward under the action of the screws 4 and contact the ground, thereby improving the support effect of the device in conjunction with the universal wheels 2.

[0031] Working principle: During use, the operator feeds the asphalt concrete material into the heating box 10 through the upper feed port 13. The material is heated by the electric heating wire in the heating chamber 25 inside the heating box 10. Next, the motor 12 at the top is started to drive the internal rotating shaft 16 and gear 17 to rotate. Then, under the meshing action, it can drive the gear 23 and rotating rod 22 to rotate. Then, through the transmission of two pulleys, the rotating shaft 19 can rotate, ensuring that the two sets of stirring rods inside the heating box 10 rotate in opposite directions, which can maximize the stirring of the asphalt concrete material inside, increase the heating area, and enhance the heating effect. After heating is completed, the solenoid valve 7 at the bottom is opened, allowing the material to enter the conveying box 6 through the discharge port 8. Finally, the drive element inside the drive box 15 is started to realize the rotation of the spiral conveying blade 26, which sends the heated and stirred asphalt concrete outward, improving the use effect of the device.

[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A heating device for asphalt concrete construction, comprising a base (1), characterized in that, A bracket (9) is fixedly connected to the upper center of the base (1). A heating box (10) is fixedly connected inside the bracket (9). A feed inlet (13) is provided through one end of the outer side of the heating box (10). A drive box (11) is fixedly connected to the top of the heating box (10). A motor (12) is fixedly connected to one end of the upper side of the drive box (11). The output end of the motor (12) is connected to a rotating shaft (16) through the drive box (11) and the heating box (10) via a coupling. The drive box (11) and the heating box (10) are rotatably connected to the upper inner side of the shaft (19), and the shaft (16) passes through the inside of the shaft (19). The shaft (16) is fixedly connected to the gear (17). The other inner side of the drive box (11) is rotatably connected to the rotating rod (22), and the rotating rod (22) is fixedly connected to the gear (23). The gear (17) and the gear (23) mesh with each other.

2. The heating device for asphalt concrete construction according to claim 1, characterized in that, A pulley (18) is fixedly connected to the second rotating shaft (19), and a pulley (21) is fixedly connected to the rotating rod (22). A belt (20) is fitted on the pulley (18) and the pulley (21).

3. The heating device for asphalt concrete construction according to claim 1, characterized in that, Both the first rotating shaft (16) and the second rotating shaft (19) are fixedly connected to several sets of stirring rods (24) on the heating box (10).

4. The heating device for asphalt concrete construction according to claim 1, characterized in that, The heating box (10) has a heating chamber (25) inside, and a discharge port (8) is provided through the bottom of the heating box (10). A solenoid valve (7) is installed inside the discharge port (8).

5. A heating device for asphalt concrete construction according to claim 4, characterized in that, A conveyor box (6) is provided through the bottom of the discharge port (8), and a drive box (15) is fixedly connected to the outer end of the conveyor box (6).

6. A heating device for asphalt concrete construction according to claim 5, characterized in that, The conveying box (6) is rotatably connected to a spiral conveying blade (26), and the drive box (15) is equipped with a drive assembly, which is connected to the spiral conveying blade (26).

7. A heating device for asphalt concrete construction according to claim 1, characterized in that, A handle (14) is fixedly connected to the upper left end of the base (1), and casters (2) are provided at the four lower ends of the base (1).

8. A heating device for asphalt concrete construction according to claim 1, characterized in that, The base (1) has fixed blocks (3) at both ends of its outer side. The fixed blocks (3) have screws (4) threaded inside them. The bottom of the screws (4) is rotatably connected to a support plate (5).

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