Cooker

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 vehicle.

Background Art

[0002] Patent Document 1 discloses a cooker vehicle including a cooker body, a heater for heating the cooker body, and a stirring blade for stirring a goose asphalt mixture inside the cooker body. A temperature sensor is disposed at the central part of the cooker body. By the way, in a mixing plant, the cooker vehicle loads a goose asphalt mixture into the cooker body, stirs it, and transports it to a construction site while heating it inside the cooker body according to the measured value by the temperature sensor.

Prior Art Documents

Patent Documents

[0003] ]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in Patent Document 1, since the temperature sensor is disposed at the central part of the cooker body, when the loading amount of the goose asphalt mixture in the cooker body is small, temperature control may not be sufficiently performed and the mixture may be wasted. Therefore, an object of the present invention is to provide a cooker vehicle capable of sufficiently performing temperature control even when the loading amount of the goose asphalt mixture is small.

Means for Solving the Problems

[0005] An aspect of the present invention comprises a cooker body, a heater for heating the cooker body, and a stirring blade for stirring the goose asphalt mixture inside the cooker body, wherein the stirring blade comprises an upper blade and a lower blade, and an upper temperature sensor is provided between the upper blade and the lower blade. The lower blade rotates near the inner surface of the bottom of the cooker body. With the rotational trajectory of the tip of the lower blade facing the side wall of the cooker body, A bulge is formed that communicates with the inside of the cooker body and protrudes outward, and inside the bulge Equipped with a lower temperature sensor The temperature of the goose asphalt mixture accumulating at the bottom of the cooker body can be measured. [Effects of the Invention]

[0006] According to the present invention, temperature control can be adequately maintained even when the amount of goose asphalt mixture loaded is small. [Brief explanation of the drawing]

[0007] [Figure 1] This is a side view of a cooker truck. [Figure 2] This is a magnified cross-sectional view of the lower part of the cooker body. [Figure 3] This is a flowchart showing the processing flow of the mixture containment apparatus. [Modes for carrying out the invention]

[0008] The embodiments for carrying out the present invention will be described in detail below with reference to the attached drawings. Figure 1 is a side view of the cooker truck 1 to which this embodiment is applied. In Figure 1, the X, Y, and Z axes are orthogonal to each other. The X axis corresponds to the front-to-back direction of the cooker truck 1, and the Y axis corresponds to the width direction of the cooker truck 1. The Z axis is perpendicular to the road surface RS and corresponds to the up-and-down direction of the cooker truck 1. In the following explanation, the positive direction of the X axis is forward, the positive direction of the Y axis is left, and the positive direction of the Z axis is upward.

[0009] The cooker truck 1 is equipped with a driver's cab 2 and a cargo bed 21, and the cargo bed 21 is equipped with a mixture storage device 3 for storing goose asphalt mixture. The mixture storage device 3 is equipped with a tank-shaped cooker body 30 for storing goose asphalt mixture. The cooker body 30 can also be called a mixing tank for goose asphalt mixture. The cooker body 30 has an inlet 31 for introducing the mixture and an outlet 32 ​​for discharging the mixture.

[0010] Inside the cooker body 30, there is a drive shaft 33 that extends vertically within the cooker body 30, and a stirring blade 34 connected to the drive shaft 33. By rotating the drive shaft 33, the stirring blade 34 stirs the goose asphalt mixture. The bottom 37 of the cooker body 30 is formed as a curved surface that is convex upwards in the center. The height of the inner surface 37A of the bottom 37 is approximately equal to the height at which the outlet 32 ​​opens.

[0011] In this embodiment, the stirring blade 34 consists of an upper blade 34A located on the upper part of the cooker body 30 and a lower blade 34B located on the lower part of the cooker body 30. Each blade 34A and 34B is positioned diagonally with respect to the drive shaft 33 to correspond to the curvature of the bottom 37. As a result, the entire goose asphalt mixture contained in the cooker body 30 is stirred by each blade 34A and 34B. The lower blade 34B rotates near the inner surface 37A of the bottom 37 of the cooker body 30. When the outlet 32 ​​is open, the rotation of the lower blade 34B pushes the goose asphalt mixture toward the outlet 32 ​​and sends it to the chute 4. In the diagram, chute 4 is shown flipped up, but when the goose asphalt mixture is discharged from outlet 32, chute 4 is tilted downwards.

[0012] A drive unit 35 is provided at the top of the cooker body 30 to rotate the drive shaft 33. The drive unit 35 rotates the drive shaft 33 using the driving force of the hydraulic motor 23. The mixture containing device 3 includes a hydraulic device 22 that generates hydraulic pressure by 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 goose asphalt mixture inside 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 portion 38 of the cooker body 30. By operating the stirring blades 34 and the heater 36, the cooker vehicle 1 transports while heating and stirring the goose asphalt mixture stored in the cooker body 30, and supplies the goose asphalt mixture to the road surface RS to be paved.

[0014] An upper-stage temperature sensor 41 is arranged between the upper-stage blades 34A and the lower-stage blades 34B. The upper-stage temperature sensor 41 is arranged horizontally across the inside of the cooker body 30, and is covered by a cross-section L-shaped cover member 42 for protecting the temperature sensor 41 from the pressing force by the goose asphalt mixture. The cover member 42 is spanned between the inner walls inside the cooker body 30 at a height that does not interfere with the upper-stage blades 34A and the lower-stage 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 portion 38, and a lower-stage temperature sensor 45 is arranged in the lower region of the side wall portion 38 as shown in FIG. 2. The lower-stage temperature sensor 45 is arranged on the side wall portion 38 of the cooker body 30 in a state facing the rotation locus of the tip of the lower-stage blades 34B. The lower-stage temperature sensor 45 is arranged in a region close to the inner surface 37A of the bottom 37 of the cooker body 30.

[0016] An outwardly protruding bulging portion 47 is formed in the lower region of the side wall portion 38 of the cooker body 30. The bulging portion 47 communicates with the inside of the cooker body 30, and the lower-stage temperature sensor 45 is arranged inside the bulging portion 47.

[0017] The cooker vehicle 1 includes a control device 100 on the driver's cab 2 for controlling the energization of the heater 36 (see Fig. 1). The control device 100 includes a memory and a processor. When the loading amount of the goose asphalt mixture into the cooker main body 30 is large, the control device 100 controls the energization of the heater 36 based on the measured value of the upper-stage temperature sensor. When the loading amount of the goose asphalt mixture in the cooker main body 30 decreases, the control switches to the lower-stage temperature sensor 45, and the energization of the heater 36 is controlled based on the measured value of the lower-stage temperature sensor 45. The large or small loading amount of the goose asphalt mixture is determined by measuring, for example, the rotational loads of the upper-stage blades 34A and the lower-stage blades 34B.

[0018] Fig. 3 shows the processing flow of the mixture storage device 3. First, before loading the goose asphalt mixture into the cooker main body 30, the control device 100 controls the energization of the heater 36 to ON (step S1). This is for preheating the cooker main body 30.

[0019] Next, the goose asphalt mixture is loaded into the cooker main body 30 through the inlet 31 (step S2). The loading amount at this time varies according to the usage amount at the construction site. When the usage amount at the construction site is small, a small amount of the goose asphalt mixture is loaded. The goose asphalt mixture is loaded at a combined material factory or the like that manufactures the goose asphalt mixture. Whether the goose asphalt mixture has been loaded into the cooker main body 30 is determined based on the rotational resistance values of the upper-stage blades 34A and the lower-stage blades 34B, or based on the weight measurement value of the cooker main 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 power supply to 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, or a sensor changeover switch may be provided in the operator's cab 2, allowing the operator to switch between sensors at their discretion.

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

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

[0023] Next, with the control device 100 continuing to control the heater 36 ON, the cooker truck 1 is driven and the goose asphalt mixture is transported (step S6).

[0024] When the cooker truck 1 arrives at the construction site, the required amount of goose asphalt mixture loaded onto it is discharged from the cooker body 30 (step S7). In step S7, after the goose asphalt mixture is discharged, the cooker truck 1 transports the goose asphalt mixture in the cooker body 30 while heating and stirring it, and returns to the asphalt mixing plant or the like that manufactures the goose asphalt mixture. When multiple construction sites are carried out consecutively at an asphalt mixing plant or the like without replenishing the goose asphalt mixture, or when there is any goose asphalt mixture remaining at a construction site that has not been used up, Cooker Truck 1 transports the asphalt mixture while heating and stirring it, and returns to the asphalt mixing plant or the like that manufactures the goose asphalt mixture.

[0025] When the cooker truck 1 returns to the asphalt mixing plant or the like, the control device 100 controls the power supply to the heater 36 to ON, preheating the cooker body 30. This is to prevent the goose asphalt mixture from hardening. In this case, the control device 100 determines whether to use the upper temperature sensor 41 or the lower temperature sensor 45 to control the power supply to the heater 36 (step S8). The determination in step S8 is made in the same way as in step S3. If it is determined that the upper temperature sensor 41 should be used, the process proceeds to step S4; if it is determined that the lower temperature sensor should be used, the process proceeds to step S5. When the instruction to preheat is input to the control device 100, the processes from steps S4 to S8 shown in Figure 3 are completed, and the process proceeds to step S1.

[0026] According to this embodiment, the cooker car 1 comprises a cooker body 30, a heater 36 for heating the cooker body 30, and stirring blades for stirring the goose asphalt mixture inside the cooker body 30. The stirring blades consist of an upper blade 34A and a lower blade 34B. 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 rotational trajectory of the tip of the lower blade 34B. This configuration allows for sufficient temperature control even when the amount of goose asphalt mixture loaded is small.

[0027] Furthermore, the cooker car 1 has a bulge 47 formed on the side wall 38 of the cooker body 30 that communicates with the inside of the cooker body 30, and a lower temperature sensor 45 is placed in the bulge 47. With this configuration, the lower temperature sensor 45 does not interfere with the rotation of the lower vane 34B.

[0028] Furthermore, the cooker truck 1 is equipped with a control device 100 (control unit) that controls the supply of power to the heater 36. When the amount of goose asphalt mixture loaded into the cooker body 30 is large, the control device 100 controls the supply of power based on the measurement value of the upper temperature sensor 41, and when the amount of goose asphalt mixture loaded into the cooker body 30 decreases, it switches to the measurement value of the lower temperature sensor 45 and controls the supply of power. With this configuration, the temperature sensors can be used differently depending on the amount of goose asphalt mixture being loaded. When a large amount of goose asphalt mixture is loaded, the upper temperature sensor can be used to ensure proper temperature control.

[0029] The above embodiments illustrate one specific example of applying the present invention and do not limit the forms to which the invention is applied. In the above embodiment, the power supply to the heater 36 was controlled by switching between the upper temperature sensor 41 and the lower temperature sensor 45. However, the embodiment is not limited to this, 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 using both temperature sensors 41 and 45, without switching between the upper temperature sensor 41 and the lower temperature sensor 45. Furthermore, the heating method is not limited to the heater 36. For example, a burner using fossil fuels may also be used. [Explanation of symbols]

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

Claims

1. The cooker comprises a cooker body, a heater for heating the cooker body, and a stirring blade for stirring the goose asphalt mixture inside the cooker body. The aforementioned stirring blade comprises an upper blade and a lower blade. An upper temperature sensor is provided between the upper and lower blades. The lower vane rotates near the inner surface of the bottom of the cooker body, and a bulge is formed on the side wall of the cooker body that communicates with the inside of the cooker body and protrudes outward, with the rotational trajectory of the tip of the lower vane facing the bulge. A lower temperature sensor is provided inside the bulge, making it possible to measure the temperature of the goose asphalt mixture that remains at the bottom of the cooker body. Cooker truck.

2. The system includes a control unit that controls the supply of power to the heater, The control unit controls the power supply based on the measurement value of the upper temperature sensor when the amount of goose asphalt mixture loaded into the cooker body is large, and switches to controlling the power supply based on the measurement value of the lower temperature sensor when the amount of goose asphalt mixture loaded into the cooker body decreases. The cooker car according to claim 1.

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