Cooker truck

Abstract

To provide a cooker truck capable of sufficiently controlling temperature even when the amount of goose asphalt mixture loaded is small. [Solution] The cooker vehicle 1 comprises a cooker body 30, a heater 36 for heating the cooker body 30, and an agitator blade for agitating the goose asphalt mixture inside the cooker body 30. The agitator blade comprises an upper blade 34A and a lower blade 34B, and an upper temperature sensor 41 is provided between the upper blade 34A and the lower blade 34B, and a lower temperature sensor 45 is provided on the side wall 38 of the cooker body 30, facing the rotation trajectory of the tip of the lower blade 34B.

Description

[Technical Field]

[0001] The present invention relates to a cooker car. [Background technology]

[0002] Patent Document 1 discloses a cooking vehicle equipped with a cooking unit, a heater for heating the cooking unit, and a stirring blade for stirring the gusset asphalt mixture inside the cooking unit. A temperature sensor is located in the center of the cooking unit. Incidentally, in a cooking truck, the gusset asphalt mixture is loaded into the cooking truck body at the mixing plant, stirred, and heated inside the cooking truck body according to the temperature sensor measurements, before being transported to the construction site. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-31619 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in Patent Document 1, the temperature sensor is placed in the center of the cooker body, so if the amount of gusset asphalt mixture loaded in the cooker body is small, temperature control may not be performed properly and the mixture may be wasted. Therefore, an object of the present invention is to provide a cooker truck that can adequately control temperature even when the amount of gusset asphalt mixture loaded is small. [Means for solving the problem]

[0005] An aspect of the present invention comprises a cooker body, a heater for heating the cooker body, and an agitator blade for agitating the gusset asphalt mixture inside the cooker body, the agitator blade having an upper blade and a lower blade, an upper temperature sensor between the upper blade and the lower blade, and a lower temperature sensor on the side wall of the cooker body, facing the rotation trajectory of the tip of the lower blade. [Effects of the Invention]

[0006] According to the present invention, temperature control can be performed sufficiently even when the amount of gusset asphalt mixture loaded is small. [Brief explanation of the drawings]

[0007] [Figure 1] This is a side view of a cooker truck. [Figure 2] An enlarged cross-sectional view of the lower part of the cooker body. [Figure 3] 10 is a flowchart showing a processing flow of the mixture containing device. DETAILED DESCRIPTION OF THE INVENTION

[0008] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a side view of a cooker truck 1 to which this embodiment is applied. The X-axis, Y-axis, and Z-axis shown in Figure 1 are perpendicular to one another, with the X-axis corresponding to the front-to-rear direction of the cooker truck 1 and the Y-axis corresponding to the width direction of the cooker truck 1. The Z-axis indicates the vertical direction perpendicular to the road surface RS and corresponds to the up-down direction of the cooker truck 1. In the following explanation, the positive direction of the X-axis is defined as the forward direction, the positive direction of the Y-axis as the leftward direction, and the positive direction of the Z-axis as the upward direction.

[0009] The cooker truck 1 has a driver's cab 2 and a loading platform 21, and the loading platform 21 is equipped with a mixture storage device 3 that stores the gusset asphalt mixture. The mixture storage device 3 has a tank-shaped cooker body 30 that stores the gusset asphalt mixture. The cooker body 30 can also be said to be a mixing tank for the gusset asphalt mixture. The cooker body 30 has an inlet 31 for putting the mixture in and an outlet 32 ​​for discharging the mixture.

[0010] Inside the cooker body 30, there is provided a drive shaft 33 extending vertically inside the cooker body 30, and an agitator blade 34 connected to the drive shaft 33. By rotating the drive shaft 33, the agitator blade 34 agitates the gusset asphalt mixture. The bottom 37 of the cooker body 30 is formed into a curved surface with an upward convex center. The height of the inner surface 37A of the bottom 37 is approximately equal to the height at which the discharge port 32 opens.

[0011] In this embodiment, the stirring blade 34 is composed of an upper blade 34A located at the upper stage of the cooker body 30 and a lower blade 34B located at the lower stage of the cooker body 30. Each blade 34A, 34B is arranged diagonally with respect to the drive shaft 33 to correspond to the curvature of the bottom 37. Therefore, each blade 34A, 34B stirs the entire gusset asphalt mixture contained in the cooker body 30. The lower blade 34B rotates near the inner surface 37A of the bottom 37 of the cooker body 30. When the discharge outlet 32 ​​is open, the rotation of the lower blade 34B pushes the gusset asphalt mixture toward the discharge outlet 32 ​​and sends it to the chute 4. In the drawing, the chute 4 is raised upward, but when the gusset asphalt mixture is discharged from the discharge port 32, the chute 4 is tilted downward.

[0012] A drive unit 35 that rotates the drive shaft 33 is provided on the top of the cooker body 30. The drive unit 35 rotates the drive shaft 33 by the driving force of the hydraulic motor 23. The mixture containing device 3 is provided with a hydraulic device 22 that generates hydraulic pressure using the power of a diesel engine (not shown), and the hydraulic device 22 supplies hydraulic pressure to a hydraulic motor 23 .

[0013] An electric heater 36 for heating the gusset asphalt mixture in the cooker body 30 is provided on the outer surface 37B of the bottom 37 of the cooker body 30 and inside the side wall 38 of the cooker body 30. By operating the mixing blades 34 and heater 36, the cooker vehicle 1 transports the gusset asphalt mixture stored in the cooker body 30 while heating and mixing it, and supplies the gusset asphalt mixture to the road surface RS to be paved.

[0014] An upper temperature sensor 41 is disposed between the upper blade 34A and the lower blade 34B. The upper temperature sensor 41 is disposed horizontally across the inside of the cooker body 30 and is covered by a cover member 42 with an L-shaped cross section to protect the temperature sensor 41 from the pressing force of the gusset asphalt mixture. The cover member 42 is placed between the inner walls of the cooker body 30 at a height that does not interfere with the upper blades 34A and the lower blades 34B.

[0015] Fig. 2 is an enlarged cross-sectional view of the lower part of the cooker body 30. The cooker body 30 has a cylindrical side wall 38, and a lower temperature sensor 45 is arranged in the lower region of the side wall 38, as shown in Fig. 2. The lower temperature sensor 45 is disposed on the side wall 38 of the cooker body 30, facing the rotation trajectory of the tip of the lower blade 34B. The lower temperature sensor 45 is disposed in an area close to the inner surface 37A of the bottom 37 of the cooker body 30.

[0016] A bulging portion 47 that protrudes outward is formed in the lower region of the side wall portion 38 of the cooker body 30. The bulging portion 47 communicates with the interior of the cooker body 30, and the lower temperature sensor 45 is disposed inside the bulging portion 47.

[0017] The cooker truck 1 is equipped with a control device 100 in the cab 2 that controls the supply of electricity to the heater 36 (see Figure 1). The control device 100 has a memory and a processor. When the amount of gusset asphalt mixture loaded in the cooker body 30 is large, the control device 100 controls the supply of electricity to the heater 36 based on the measurement value of the upper temperature sensor, and when the amount of gusset asphalt mixture loaded in the cooker body 30 decreases, the control device 100 switches to the lower temperature sensor 45 and controls the supply of electricity to the heater 36 based on the measurement value of the lower temperature sensor 45. Whether the loading amount of gusset asphalt mixture is large or small is determined, for example, by measuring the rotation load of the upper blade 34A and the lower blade 34B.

[0018] FIG. 3 shows the process flow of the mixture containing device 3. First, the control device 100 controls the power supply to the heater 36 to be turned on before the gusset asphalt mixture is loaded into the cooker main body 30 (step S1). This is to preheat the cooker body 30.

[0019] Next, the gusset asphalt mixture is loaded into the cooker body 30 through the loading port 31 (step S2). The amount loaded at this time varies depending on the amount used at the construction site. If the amount used at the construction site is small, a small amount of gusset asphalt mixture is loaded. The gusset asphalt mixture is loaded at a mix factory or the like where the gusset asphalt mixture is manufactured. Whether or not the gusset asphalt mixture has been loaded into the cooker body 30 is determined based on the rotational resistance values ​​of the upper blades 34A and the lower blades 34B, or based on the weight measurement value of the cooker body 30.

[0020] Next, the control device 100 determines whether to use the upper temperature sensor 41 or the lower temperature sensor 45 to control the energization of the heater 36 (step S3). This determination is made based on the rotational resistance values ​​of the upper blades 34A and the lower blades 34B, or based on the measured weight of the cooker body 30. Alternatively, a sensor changeover switch may be provided in the cab 2, and the driver may decide to switch between sensors.

[0021] When the amount of gusset asphalt mixture loaded in the cooker body 30 is large, the control device 100 controls the power supply to the heater 36 to be turned on based on the measurement value of the upper temperature sensor 41 (step S4). The control of step S4 is started when the gusset asphalt mixture is loaded above the position of the upper temperature sensor 41.

[0022] When the amount of goose asphalt mixture loaded in the cooker body 30 is small, the control device 100 controls the power supply to the heater 36 to be turned on based on the measurement value of the lower temperature sensor 45 (step S5). The control of step S5 is started when the goose asphalt mixture is loaded below the position of the upper temperature sensor 41. When the amount of goose asphalt mixture to be used at the construction site is small, in step S2, a small amount of goose asphalt mixture corresponding to the amount to be used is loaded.

[0023] Next, the control device 100 continues to control the heater 36 to be ON, and the cooker vehicle 1 is driven to transport the gusset asphalt mixture (step S6).

[0024] When the cooker truck 1 arrives at the construction site, the required amount of the loaded gusset asphalt mixture is discharged from the cooker body 30 (step S7). In step S7, after the goose asphalt mixture is discharged, the cooker vehicle 1 transports the goose asphalt mixture in the cooker body 30 while heating and stirring it, and returns to the mix factory or the like where the goose asphalt mixture is produced. When construction is carried out at multiple construction sites consecutively at a material processing plant or the like without replenishing the goose asphalt mixture, or when the goose asphalt mixture is not used up at the construction site, the cooker truck 1 transports the asphalt mixture while heating and stirring it, and returns to the material processing plant or the like where the goose asphalt mixture is produced.

[0025] When the cooking truck 1 returns to a mixer plant or the like, the control device 100 turns on the power to the heater 36, preheating the cooking device body 30. This is to prevent the gusset asphalt mixture from solidifying. In this case, the control device 100 determines whether to use the upper temperature sensor 41 or the lower temperature sensor 45 to turn on the power to the heater 36 (step S8). The determination in step S8 is made in the same way as the determination in step S3; if it is determined that the upper temperature sensor 41 should be used, the process proceeds to step S4, and if it is determined that the lower temperature sensor should be used, the process proceeds to step S5. When a command to perform preheating is input to the control device 100, the processing of steps S4 to S8 shown in FIG. 3 ends, and the process proceeds to step S1.

[0026] According to this embodiment, the cooker vehicle 1 comprises a cooker body 30, a heater 36 for heating the cooker body 30, and an agitator blade for agitating the gusset asphalt mixture inside the cooker body 30. The agitator blade comprises an upper blade 34A and a lower blade 34B, an upper temperature sensor 41 between the upper blade 34A and the lower blade 34B, and a lower temperature sensor 45 on the side wall 38 of the cooker body 30, facing the rotation trajectory of the tip of the lower blade 34B. With this configuration, temperature control can be performed adequately even when the amount of gusset asphalt mixture loaded is small.

[0027] In addition, the cooker vehicle 1 has a bulging portion 47 formed on the side wall portion 38 of the cooker body 30 that communicates with the inside of the cooker body 30, and the lower temperature sensor 45 is arranged in the bulging portion 47. According to this configuration, the lower temperature sensor 45 does not interfere with the rotation of the lower blades 34B.

[0028] The cooker truck 1 also has a control device 100 (control unit) that controls the supply of electricity to the heater 36, and when the amount of goose asphalt mixture loaded into the cooker main body 30 is large, the control device 100 controls the supply of electricity based on the measurement value of the upper temperature sensor 41, and when the amount of goose asphalt mixture loaded into the cooker main body 30 decreases, it switches to the measurement value of the lower temperature sensor 45 and controls the supply of electricity. With this configuration, different temperature sensors can be used depending on the amount of gusset asphalt mixture loaded, and when a large amount of gusset asphalt mixture is loaded, the upper temperature sensor can be used to adequately control the temperature.

[0029] The above embodiment shows a specific example to which the present invention is applied, and does not limit the form to which the invention is applied. In the above embodiment, the power supply to the heater 36 is controlled by switching between the upper temperature sensor 41 and the lower temperature sensor 45, but this is not limited to this. Instead of switching between the upper temperature sensor 41 and the lower temperature sensor 45, both temperature sensors 41, 45 may be used, and the power supply to the heater 36 may be controlled based on the measurement value of the sensor that can effectively measure in real time. Furthermore, the heating means is not limited to the heater 36. For example, a burner using fossil fuels may be used. [Explanation of symbols]

[0030] 1 Cooker car 30 Cooker body 31 Inlet 32 Outlet 34A Upper blade (mixing blade) 34B Lower blade (mixing blade) 36 Heater 37 Bottom 38 Side wall 41 Upper temperature sensor 45 Lower temperature sensor 47 Bulge 100 control device (control unit)

Claims

1. A cooker body, a heater for heating the cooker body, and a stirring blade for stirring the gusset asphalt mixture inside the cooker body, The stirring blade includes an upper blade and a lower blade, an upper stage temperature sensor is provided between the upper stage blade and the lower stage blade; A lower temperature sensor is provided on the side wall of the cooker body, facing the rotation trajectory of the tip of the lower blade. Cooker truck.

2. A bulging portion communicating with the inside of the cooker body is formed on the side wall of the cooker body, and the lower temperature sensor is disposed in the bulging portion. A cooker car according to claim 1.

3. a control unit for controlling the supply of electricity to the heater; The control unit controls the power supply based on the measurement value of the upper temperature sensor when the amount of gusset asphalt mixture loaded into the cooker body is large, and switches to the measurement value of the lower temperature sensor to control the power supply when the amount of gusset asphalt mixture loaded into the cooker body is reduced. A cooking vehicle according to claim 1 or 2.

Images