Preheating mechanism of pouring type asphalt paver

Abstract

The utility model relates to the technical field of paving preheating, in particular to a preheating mechanism of a pouring type asphalt paver, which comprises a paving vehicle and a heating mechanism arranged on the outer wall of the paving vehicle, the heating mechanism comprises a water storage tank, and the outer wall of the water storage tank is fixedly connected with the outer wall of the paving vehicle. According to the device, water in the water storage tank and the hollow material storage tank is heated through the electric heating tube driver, and most components can be rapidly preheated. The water has the heat storage capacity. According to the heating mode, the working efficiency of the equipment is improved, the energy cost is reduced, the first motor drives the first cross-shaped blade to rotate rapidly, the mixing process of water heated through the electric heating pipe and water not heated yet is accelerated, heat energy distribution is optimized through mixing acceleration, and the heating efficiency is improved. And the overall preheating efficiency is effectively improved, so that the equipment can reach an ideal working temperature more quickly, the preheating time is shortened, and the energy use efficiency is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of paving preheating, in particular to a preheating mechanism of a pouring type asphalt paver. Background Art

[0002] The preheating mechanism of a pouring asphalt paver is a key part, which is mainly used to preheat the key components of the paver before the asphalt paving operation or to preheat the asphalt in the undischarge box to prevent cooling, so as to ensure that the asphalt material can achieve the ideal paving effect during the paving process.

[0003] The heating elements used in the existing preheating mechanism mainly include electric heating wires, electric heating plates, etc. Although they can achieve good heating effects, there are many key components that need to be heated, and some components are large in size, such as storage boxes. Long-term work requires a lot of electricity, resulting in high energy consumption of the asphalt paver and increased operating costs. Utility Model Content

[0004] In order to overcome the above technical problems, the purpose of this utility model is to provide a preheating mechanism for a pouring asphalt paver, which can quickly preheat most components by heating the water inside the water storage tank and the hollow storage tank through an electric heating tube driver. Since water has the ability to store heat, this preheating method can significantly improve energy utilization efficiency and effectively reduce energy consumption. This heating method not only improves the working efficiency of the equipment, but also reduces energy costs. The cross-shaped blade is driven by the No. 1 motor to rotate rapidly, thereby accelerating the mixing process between the water that has been heated by the electric heating tube and the water that has not yet been heated. This acceleration of mixing not only optimizes the distribution of thermal energy, but also effectively improves the overall preheating efficiency, so that the equipment can reach the ideal working temperature faster, reduce the preheating time, and optimize the energy efficiency.

[0005] The purpose of this utility model can be achieved through the following technical solutions:

[0006] A preheating mechanism for a pouring asphalt paver, comprising a paver and a heating mechanism arranged on the outer wall of the paver;

[0007] The heating mechanism includes a water tank, the outer wall of the water tank is fixedly connected to the outer wall of the paving vehicle, a hollow material storage box is fixedly connected to the outer wall of one side of the water tank, the outer wall of the hollow material storage box is penetrated and fixedly connected to the outer wall of the top of the paving vehicle, a square hole is opened between the adjacent water tanks and outer walls of the hollow material storage boxes, an electric heating pipe is fixedly connected to the inside of the water tank near the center position, square tubes are fixedly connected to both sides of the bottom of the hollow material storage box near one end, a hollow paving board is rotatably connected to the inside of the paving vehicle near the bottom end, and a PP-R water pipe is fixedly connected between the outer wall of the square tube and the hollow paving board.

[0008] Furthermore, a square hole No. 2 is opened near the center position between the water tank and the outer wall of one side of the hollow material storage box, a square shell is fixedly connected at the second square hole between the water tank and the outer wall of one side of the hollow material storage box, a turbulence unit is fixedly connected at the first square hole between the water tank and the outer wall of the hollow material storage box, the turbulence unit includes a No. 1 motor, the outer wall of the No. 1 motor is fixedly connected to the outer wall of the water tank, the motor shaft of the No. 1 motor is fixedly connected to a cross-shaped blade No. 1, the outer wall of one side of the cross-shaped blade No. 1 is fixedly connected to a round rod No. 1, the outer wall of one end of the round rod No. 1 is sleeved and rotatably connected to a fixing frame, and the outer wall of the fixing frame is fixedly connected to the inner wall of the square shell.

[0009] Preferably, an outer wall of the round rod is sleeved and fixedly connected with fan-shaped blades inside the square shell.

[0010] Preferably: a stirring and preheating unit is fixedly connected near the center position inside the hollow storage box, the stirring and preheating unit includes a No. 2 motor and a round tube, an L-shaped shell is fixedly connected to the outer wall of one side of the paving vehicle near the position of the stirring and preheating unit, and the outer walls at both ends of the round tube are rotatably connected with rotary connectors, one of the outer walls of the rotary connectors is fixedly connected to the outer wall of the L-shaped shell, and a PP-R water pipe 2 is fixedly connected to the outer wall of the square shell, and the other outer wall of the rotary connector is fixedly connected to the outer wall of the paving vehicle, and a PP-R water pipe 3 is fixedly connected to the outer wall of the water tank.

[0011] Preferably, the outer wall of the circular tube is located inside the hollow material storage box and is fixedly connected with four hollow blades at equal angles around its axis.

[0012] Preferably: the outer wall of the No. 2 motor is fixedly connected to the outer wall of the L-shaped shell, the outer wall of the motor shaft of the No. 2 motor is sleeved and fixedly connected with a spur gear 1, the outer wall of one end of the circular tube is sleeved and fixedly connected with a spur gear 2, and a transmission belt 1 is transmission-connected between the outer wall of the spur gear 2 and the outer wall of the spur gear 1.

[0013] Preferably: the outer wall of the motor shaft of the second motor is sleeved and fixedly connected with a spur gear three at a position close to the side of the spur gear one, one of the square tube outer walls is rotatably connected with a round rod two, one end of the round rod two is sleeved and fixedly connected with a spur gear four, a transmission belt two is transmission-connected between the outer walls of the spur gear four and the outer walls of the spur gear three, and the outer wall of the round rod two is sleeved and fixedly connected with a cross-shaped blade two at the inside of the square tube.

[0014] Beneficial effects of this utility:

[0015] 1. The outer wall of the water tank is fixedly connected to the outer wall of the paving vehicle, a hollow material storage box is fixedly connected to the outer wall of one side of the water tank, the outer wall of the hollow material storage box is fixedly connected to the outer wall of the top of the paving vehicle, a square hole is opened between the adjacent water tanks and the outer walls of the hollow material storage boxes, an electric heating pipe is fixedly connected near the center of the water tank, and square pipes are fixedly connected to both sides of the bottom of the hollow material storage box near one end, and a hollow paving board is rotatably connected to the side of the paving vehicle near the bottom, and a PP-R water pipe is fixedly connected between the outer wall of the square pipe and the hollow paving board. The water inside the water tank and the hollow material storage box is heated by the electric heating pipe driver, and most components can be preheated quickly. Since water has the ability to store heat, this preheating method can significantly improve energy utilization efficiency and effectively reduce energy consumption. This heating method not only improves the working efficiency of the equipment, but also reduces energy costs.

[0016] 2. A square hole 2 is opened between the water tank and the outer wall of one side of the hollow storage box near the center position, a square shell is fixedly connected between the water tank and the outer wall of one side of the hollow storage box at the second square hole, a turbulence unit is fixedly connected between the water tank and the outer wall of the hollow storage box at the first square hole, the turbulence unit comprises a No. 1 motor, the outer wall of the No. 1 motor is fixedly connected to the outer wall of the water tank, a cross-shaped blade 1 is fixedly connected to the motor shaft of the No. 1 motor, a round rod 1 is fixedly connected to the outer wall of one side of the cross-shaped blade 1, the outer wall of one end of the round rod 1 is sleeved and rotatably connected to a fixed frame, the outer wall of the fixed frame is fixedly connected to the inner wall of the square shell, and the cross-shaped blade 1 is driven by the No. 1 motor to rotate rapidly, thereby accelerating the mixing process between the water that has been heated by the electric heating tube and the water that has not yet been heated. This accelerated mixing not only optimizes the distribution of thermal energy, but also effectively improves the overall preheating efficiency, so that the equipment can reach the ideal working temperature faster, reduces the preheating time, and optimizes the energy utilization efficiency.

[0017] 3. The outer wall of the round rod is fixedly connected with a fan-shaped blade inside the square shell. When the fan-shaped blade starts to rotate, it will generate pressure on the water, so that the heated water can quickly flow into the inside of the round tube through the PP-R water pipe. The pressurized flow greatly improves the preheating efficiency, allowing the components to quickly reach the required working temperature, thereby reducing the preheating time and improving the overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the hollow material storage box of the utility model;

[0021] Figure 3It is a schematic diagram of the structure of the preheating mechanism in the utility model;

[0022] Figure 4 It is a schematic diagram of the partial structure of the preheating mechanism in the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the turbulent flow unit in the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the stirring and preheating unit in the utility model.

[0025] In the figure: 110, paving vehicle; 111, L-shaped shell; 120, hollow paving board; 200, heating mechanism; 210, water storage tank; 211, electric heating pipe; 212, hollow storage box; 213, square hole 1; 214, square shell; 215, square hole 2; 216, square tube; 217, PP-R water pipe 1; 220, turbulent unit; 221, No. 1 motor; 222, cross-shaped blade 1; 223, round rod 1; 224, fan-shaped blade ; 225, fixed frame; 230, stirring preheating unit; 231, motor No. 2; 232, spur gear one; 233, round tube; 234, spur gear two; 235, transmission belt one; 236, hollow blade; 240, rotary connector; 241, PP-R water pipe two; 242, PP-R water pipe three; 250, spur gear three; 251, transmission belt two; 252, round rod two; 253, spur gear four; 254, cross blade two. DETAILED DESCRIPTION

[0026] The following will be combined with the practical embodiment to clearly and completely describe the technical solution in the practical embodiment. Obviously, the described embodiment is only a part of the practical embodiment, not all of the embodiments. Based on the embodiment in the practical, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this practical.

[0027] See also Figure 1-6 In an embodiment of the utility model, a preheating mechanism of a pouring asphalt paver mainly includes a paver 110 and a heating mechanism 200 arranged on the outer wall of the paver 110, and the heating mechanism 200 further includes a water storage tank 210, the outer wall of the water storage tank 210 is fixedly connected to the outer wall of the paver 110, a hollow storage box 212 is fixedly connected to the outer wall of one side of the water storage tank 210, the outer wall of the hollow storage box 212 is fixedly connected to the top outer wall of the paver 110, a square hole 213 is opened between the outer walls of the adjacent water storage tanks 210 and the hollow storage box 212, and an electric heating pipe 211 is fixedly connected to the inner part of the water storage tank 210 near the center position.

[0028] In addition, a square tube 216 is fixedly connected to both sides of the bottom of the hollow storage box 212 near one end, and a hollow paving board 120 is rotatably connected to the inside of the paving vehicle 110 near the bottom end. The outer wall of the square tube 216 is fixedly connected to the hollow paving board 120 through a PP-R water pipe 217. A square hole 215 is opened near the center between the water tank 210 and the outer wall of one side of the hollow storage box 212. A square shell 214 is fixedly connected at the square hole 215 between the water tank 210 and the outer wall of one side of the hollow storage box 212. At the square hole 213 between the walls, a turbulence unit 220 is fixedly connected, and the turbulence unit 220 further includes a motor 221. The outer wall of the motor 221 is fixedly connected to the outer wall of the turbulence unit 220. The motor shaft of the motor 221 is fixedly connected to a cross-shaped blade 222. A round rod 223 is fixedly connected to the outer wall of one side of the cross-shaped blade 222. The outer wall of one end of the round rod 223 is rotatably connected to a fixed frame 225. The outer wall of the fixed frame 225 is fixedly connected to the inner wall of the square shell 214. The outer wall of the round rod 223 is located inside the square shell 214, and a fan-shaped blade 224 is fixedly connected to it.

[0029] A stirring and preheating unit 230 is fixedly connected near the center of the hollow storage box 212. The stirring and preheating unit 230 includes a No. 2 motor 231 and a round tube 233. An L-shaped shell 111 is fixedly connected to the outer wall of one side of the paving vehicle 110 near the stirring and preheating unit 230. The outer walls of both ends of the round tube 233 are rotatably connected with rotary connectors 240. The outer wall of one rotary connector 240 is fixedly connected to the outer wall of the L-shaped shell 111, and a PP-R water pipe 241 is fixedly connected to the outer wall of the square shell 214. The outer wall of the other rotary connector 240 is fixedly connected to the outer wall of the paving vehicle 110, and a PP-R water pipe 3 242 is fixedly connected to the outer wall of the water storage tank 210. The outer wall of the circular tube 233 is located inside the hollow material storage box 212, and four hollow blades 236 are fixedly connected at equal angles around its axis. The outer wall of the second motor 231 is fixedly connected to the outer wall of the L-shaped shell 111, and a spur gear 1 232 is sleeved and fixedly connected to the outer wall of the motor shaft of the second motor 231. A spur gear 2 234 is sleeved and fixedly connected to the outer wall of one end of the circular tube 233. A transmission belt 1 235 is transmission-connected between the outer wall of the spur gear 2 234 and the outer wall of the spur gear 1 232. On the outer wall of the motor shaft of the second motor 231, near the side position of the spur gear one 232, a spur gear three 250 is sleeved and fixedly connected, the outer wall of one square tube 216 is rotatably connected to a round rod two 252, and the outer wall of one end of the round rod two 252 is sleeved and fixedly connected to a spur gear four 253, a transmission belt two 251 is transmission-connected between the outer wall of the spur gear four 253 and the outer wall of the spur gear three 250, and the outer wall of the round rod two 252 is located inside the square tube 216, and is sleeved and fixedly connected to a cross-shaped blade two 254.

[0030] Specifically, during operation, the water inside the water storage tank 210 and the hollow material storage box 212 is heated by the electric heating tube 211 driver, so most of the components can be preheated quickly. The No. 1 motor 221 drives the cross-shaped blade 1 222 to rotate quickly, thereby accelerating the mixing of the water that has been heated by the electric heating tube 211 and the water that has not been heated, thereby improving the overall preheating efficiency. The No. 1 motor 221 drives the fan-shaped blade 224 to start rotating, which will generate pressure on the water, so that the heated water can quickly flow into the inside of the circular tube 233 through the PP-R water pipe 241, and flow into the inside of the hollow blade 236 along the inside of the circular tube 233. The No. 2 motor 231 drives the spur gear 1 232 rotates, and drives the circular tube 233 to rotate through the transmission belt 1 235, and drives the hollow blade 236 to flip and stir the asphalt inside the hollow storage box 212 to ensure the fluidity of the asphalt. The preheated water inside the circular tube 233 or the hollow blade 236 flows into the water storage tank 210 from the PP-R water pipe 3 242 for circulating heating. At the same time, the second motor 231 drives the spur gear 3 250 to rotate, and drives the round rod 252 to rotate through the transmission belt 251, and drives the cross blade 254 to flip, thereby accelerating the mixing of the water inside the hollow paving board 120 and the water inside the hollow storage box 212, and ensuring the temperature stability of the hollow paving board 120. Example 1

[0031] like Figure 1-6 As shown, in this embodiment, the turbulence unit 220 includes a motor 221, the outer wall of the motor 221 is fixedly connected to the outer wall of the water storage tank 210, the motor shaft of the motor 221 is fixedly connected with a cross-shaped blade 222, the outer wall of one side of the cross-shaped blade 222 is fixedly connected with a round rod 223, the outer wall of one end of the round rod 223 is sleeved and rotatably connected with a fixing frame 225, the outer wall of the fixing frame 225 is fixedly connected to the inner wall of the square shell 214, the outer wall of the round rod 223 is located inside the square shell 214 and is sleeved and fixedly connected with a fan-shaped blade 224, and the inside of the hollow storage box 212 is fixedly connected with a stirring preheating unit 230 near the center position, and the stirring preheating unit 230 includes a second Motor 231, circular tube 233, an outer wall of one side of the paving vehicle 110 is fixedly connected with an L-shaped shell 111 near the mixing and preheating unit 230, and the outer walls of both ends of the circular tube 233 are rotatably connected with rotary connectors 240, one outer wall of the rotary connectors 240 is fixedly connected to the outer wall of the L-shaped shell 111, and a PP-R water pipe 241 is fixedly connected to the outer wall of the square shell 214, and the other outer wall of the rotary connector 240 is fixedly connected to the outer wall of the paving vehicle 110, and a PP-R water pipe 3 242 is fixedly connected to the outer wall of the water tank 210, and the outer wall of the circular tube 233 is located inside the hollow storage box 212 and is fixedly connected with four hollow blades 236 at equal angles around its axis.

[0032] In this embodiment, motor No. 1 221 drives cross-shaped blade 1 222 to rotate at high speed. This movement effectively promotes the mixing between the water that has passed through the heating area of ​​the electric heating tube 211 and the water that has not yet been heated, significantly improving the overall preheating efficiency. Then, motor No. 1 221 drives fan-shaped blade 224 to start rotating. Fan-shaped blade 224 applies a certain pressure to the water, so that the heated water can quickly flow into the interior of circular tube 233 through PP-R water pipe 2 241. Subsequently, the water continues to flow along the interior of circular tube 233 and finally enters the interior of hollow blade 236, completing the entire process. This not only speeds up the heating and flow speed of the water, but also improves the preheating efficiency of the components, making the entire heating process faster and more efficient.

[0033] like Figure 1 and 6 As shown, in this embodiment, the outer wall of the second motor 231 is fixedly connected to the outer wall of the L-shaped shell 111, the outer wall of the motor shaft of the second motor 231 is sleeved and fixedly connected with a spur gear 232, the outer wall of one end of the circular tube 233 is sleeved and fixedly connected with a spur gear 234, and the outer wall of the spur gear 234 and the outer wall of the spur gear 1 232 are transmission-connected with a transmission belt 1 235.

[0034] During specific implementation, the No. 2 motor 231 drives the spur gear 232 to rotate, which is transmitted through the transmission belt 235, so that the circular tube 233 also starts to rotate. As the circular tube 233 rotates, the hollow blade 236 is driven to flip. The main purpose of flipping the hollow blade 236 is to fully stir the asphalt stored in the hollow storage box 212. This stirring action combined with heating can effectively ensure the fluidity of the asphalt, prevent it from solidifying or precipitating, and ensure that the asphalt can be evenly and smoothly supplied to subsequent processes when needed. Example 2

[0035] On the basis of Example 1, in order to compensate for the fact that the hollow paving board 120 in Example 1 is located at the bottom of the paving vehicle 110, which is far away from the electric heating tube 211 and has a slow preheating efficiency, the preheating efficiency of the hollow paving board 120 is effectively improved by rotating the cross-shaped blade 254 in combination with the rotation of the cross-shaped blade 1 222.

[0036] like Figure 6 As shown, in this embodiment, the outer wall of the motor shaft of the second motor 231 is sleeved and fixedly connected with a spur gear three 250 at a position close to the side of the spur gear one 232, the outer wall of one square tube 216 is rotatably connected with a round rod two 252, the outer wall of one end of the round rod two 252 is sleeved and fixedly connected with a spur gear four 253, the outer wall of the spur gear four 253 and the outer wall of the spur gear three 250 are transmission-connected with a transmission belt two 251, and the outer wall of the round rod two 252 is sleeved and fixedly connected with a cross-shaped blade two 254 at the inside of the square tube 216.

[0037] During specific implementation, motor No. 231 drives spur gear No. 3 250 to start rotating. This rotation action drives round rod No. 252 through transmission belt No. 251 to make it start rotating as well. As round rod No. 252 rotates, cross blade No. 254 is driven to flip. This flipping action greatly promotes the mixing of water inside hollow paving board 120 and water inside hollow storage box 212. By accelerating the mixing speed of the two types of water, the stability of the water temperature inside hollow paving board 120 can be maintained, ensuring that the asphalt does not cool down immediately when it contacts hollow paving board 120, thereby maintaining proper fluidity for easy paving.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific characteristic structure materials or features described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific characteristic structure materials or features described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The above contents are merely examples and explanations of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the utility or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. A preheating mechanism for a pouring asphalt paver, characterized in that: It comprises a paving vehicle (110) and a heating mechanism (200) arranged on the outer wall of the paving vehicle (110); The heating mechanism (200) comprises a water storage tank (210), the outer wall of the water storage tank (210) being fixedly connected to the outer wall of the paving vehicle (110), a hollow material storage box (212) being fixedly connected to the outer wall of one side of the water storage tank (210), the outer wall of the hollow material storage box (212) being penetrated and fixedly connected to the outer wall of the top end of the paving vehicle (110), and a square hole (212) being provided between the adjacent outer walls of the water storage tank (210) and the hollow material storage box (212). 3) An electric heating pipe (211) is fixedly connected to the water storage tank (210) near the center, and square tubes (216) are fixedly connected to both sides of the bottom of the hollow material storage box (212) near one end. A hollow paving board (120) is rotatably connected to the paving vehicle (110) near the bottom, and a PP-R water pipe (217) is fixedly connected between the outer wall of the square tube (216) and the hollow paving board (120).

2. The preheating mechanism of a pouring asphalt paver according to claim 1, characterized in that: A second square hole (215) is provided between the outer wall of one side of the water storage tank (210) and the hollow material storage box (212) near the center position, a square shell (214) is fixedly connected at the second square hole (215) between the outer wall of one side of the water storage tank (210) and the hollow material storage box (212), and a turbulent flow unit (220) is fixedly connected at the first square hole (213) between the outer wall of the water storage tank (210) and the hollow material storage box (212), the turbulent flow unit (220) comprising A motor (221) is included, the outer wall of the motor (221) is fixedly connected to the outer wall of the water tank (210), the motor shaft of the motor (221) is fixedly connected to a cross-shaped blade (222), the outer wall of one side of the cross-shaped blade (222) is fixedly connected to a round rod (223), the outer wall of one end of the round rod (223) is sleeved and rotatably connected to a fixing frame (225), and the outer wall of the fixing frame (225) is fixedly connected to the inner wall of the square shell (214).

3. The preheating mechanism of a pouring asphalt paver according to claim 2, characterized in that: The outer wall of the round rod 1 (223) is located inside the square shell (214) and is sleeved and fixedly connected with a fan-shaped blade (224).

4. The preheating mechanism of a pouring asphalt paver according to claim 3, characterized in that: A stirring and preheating unit (230) is fixedly connected to a position near the center of the hollow material storage box (212), and the stirring and preheating unit (230) comprises a second motor (231) and a round tube (233). An L-shaped shell (111) is fixedly connected to an outer wall of one side of the paving vehicle (110) near the stirring and preheating unit (230). Rotating connectors (240) are rotatably connected to the outer walls of both ends of the round tube (233). An outer wall of one of the rotating connectors (240) is fixedly connected to an outer wall of the L-shaped shell (111), and a second PP-R water pipe (241) is fixedly connected to an outer wall of the square shell (214). An outer wall of the other rotating connector (240) is fixedly connected to an outer wall of the paving vehicle (110), and a third PP-R water pipe (242) is fixedly connected to an outer wall of the water storage tank (210).

5. The preheating mechanism of a pouring asphalt paver according to claim 4, characterized in that: The outer wall of the circular tube (233) is located inside the hollow material storage box (212) and is fixedly connected with four hollow blades (236) at equal angles around its axis.

6. The preheating mechanism of a pouring asphalt paver according to claim 4, characterized in that: The outer wall of the second motor (231) is fixedly connected to the outer wall of the L-shaped shell (111); the outer wall of the motor shaft of the second motor (231) is sleeved and fixedly connected with a spur gear 1 (232); the outer wall of one end of the circular tube (233) is sleeved and fixedly connected with a spur gear 2 (234); and a transmission belt 1 (235) is transmission-connected between the outer wall of the spur gear 2 (234) and the outer wall of the spur gear 1 (232).

7. The preheating mechanism of a pouring asphalt paver according to claim 6, characterized in that: The outer wall of the motor shaft of the second motor (231) is sleeved and fixedly connected to a spur gear three (250) at a position close to the side of the spur gear one (232); the outer wall of one of the square tubes (216) is rotatably connected to a round rod two (252); the outer wall of one end of the round rod two (252) is sleeved and fixedly connected to a spur gear four (253); the outer wall of the spur gear four (253) and the outer wall of the spur gear three (250) are transmission-connected by a transmission belt two (251); the outer wall of the round rod two (252) is sleeved and fixedly connected to a cross-shaped blade two (254) located inside the square tube (216).

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