WO2017169296A1 - レディミクストコンクリート製造装置又は輸送装置、及びその制御方法 - Google Patents
レディミクストコンクリート製造装置又は輸送装置、及びその制御方法 Download PDFInfo
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- WO2017169296A1 WO2017169296A1 PCT/JP2017/006291 JP2017006291W WO2017169296A1 WO 2017169296 A1 WO2017169296 A1 WO 2017169296A1 JP 2017006291 W JP2017006291 W JP 2017006291W WO 2017169296 A1 WO2017169296 A1 WO 2017169296A1
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- Prior art keywords
- pressure value
- pressure
- hydraulic motor
- ready
- mixed concrete
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/02—Controlling the operation of the mixing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/16—Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying mixed concrete, e.g. having rotatable drums
Definitions
- the present invention relates to a ready-mixed concrete manufacturing apparatus or transport apparatus, and a control method thereof.
- Patent Document 1 discloses a conventional ready-mixed concrete transportation device.
- This ready-mixed concrete transportation apparatus includes a mixer drum and a hydraulic motor mounted on a vehicle body frame.
- the mixer drum is rotated by a hydraulic motor to knead the raw material of ready-mixed concrete and water.
- the raw material of ready mixed concrete is cement, aggregate, admixture and the like.
- the hydraulic motor is rotated by circulating hydraulic oil to and from a hydraulic pump.
- the hydraulic pump is usually driven to rotate by an engine. Thus, in this ready mixed concrete transport device, the hydraulic pump rotates according to the engine speed.
- this ready-mixed concrete transport apparatus manufactures ready-mixed concrete by kneading the raw material of ready-mixed concrete and water charged into the mixer drum while controlling the rotational speed of the mixer drum by the rotational speed of the engine.
- the ready-mixed concrete transportation device of Patent Document 1 does not consider that the kneading state such as viscosity changes in the process of kneading while mixing the raw material of ready-mixed concrete and water into the mixer drum. For this reason, in this ready-mixed concrete transport device, the load on the hydraulic motor may change due to a change in the kneaded state of the ready-mixed concrete raw material and water, and the rotation of the mixer drum may vary. In addition, this ready mixed concrete transport device requires time and effort to properly rotate the mixer drum by adjusting the rotational speed of the engine in accordance with the kneading state of the ready mixed concrete raw material and water. Further, in order to increase the rotation speed of the mixer drum, this ready-mixed concrete transportation device has to increase the rotation speed of the engine. At this time, a lot of fuel is consumed and the noise is increased.
- the present invention has been made in view of the above-described conventional circumstances, and should provide a ready-mixed concrete manufacturing apparatus or transport apparatus that can satisfactorily manufacture ready-mixed concrete and a control method thereof. It is an issue.
- the ready mixed concrete manufacturing apparatus or transport apparatus of the present invention includes a mixer drum, a hydraulic motor, a hydraulic pump, a driving device, a pressure detection device, and a control device.
- the mixer drum kneads the raw material of ready-mixed concrete and water.
- the raw material of ready mixed concrete is cement, aggregate, admixture and the like.
- the hydraulic motor rotates the mixer drum. Further, the hydraulic motor has a variable discharge volume of hydraulic fluid.
- the hydraulic pump circulates hydraulic fluid to and from the hydraulic motor.
- the drive device rotates the hydraulic pump.
- the pressure detection device detects the driving pressure of the hydraulic motor.
- the control device drives the drive device at the first rotation speed while rotating the mixer drum while reducing the discharge capacity of the hydraulic motor. The process is executed. Further, when the pressure value detected by the pressure detection device is larger than the first pressure value, the control device drives the drive device at a second rotational speed higher than the first rotational speed while increasing the discharge capacity of the hydraulic motor. Then, the second rotation process for rotating the mixer drum is performed.
- the ready mixed concrete manufacturing apparatus or the transport apparatus control method of the present invention includes a hydraulic motor in which hydraulic fluid circulates and rotates with a hydraulic pump that is driven to rotate by a driving device, cement, aggregate,
- a hydraulic motor in which hydraulic fluid circulates and rotates with a hydraulic pump that is driven to rotate by a driving device, cement, aggregate
- the first rotating step and the second rotating step are provided.
- the first rotation process when the pressure detection device that detects the drive pressure of the hydraulic motor detects a pressure value equal to or lower than the first pressure value, the drive device is driven at the first rotational speed while reducing the discharge capacity of the hydraulic motor. And rotate the mixer drum.
- the second rotation step when the pressure detection device detects a pressure value larger than the first pressure value, the drive device is driven at a second rotational speed higher than the first rotational speed while increasing the discharge capacity of the hydraulic motor. Rotate the mixer drum.
- the ready mixed concrete manufacturing apparatus or the transport apparatus control method and control method of the present invention If the discharge capacity of the motor is reduced and greater than the first pressure value, the discharge capacity of the hydraulic motor can be increased.
- the fact that the driving pressure of the hydraulic motor is stable refers to a state where the driving pressure is within a set range for a certain time (the same applies hereinafter).
- the ready mixed concrete manufacturing apparatus or the transport apparatus and the control method of the present invention provide the second pressure value in which the pressure value detected by the pressure detection device is larger than the first pressure value when the first rotation process is performed.
- the drive device is driven at the first rotation speed until the above is reached, and when the pressure becomes equal to or higher than the second pressure value, the second rotation process can be executed.
- the first pressure value or the second pressure value may have a threshold value, respectively.
- FIG. 1 is a system diagram of a mixer truck according to a first embodiment. It is a flowchart which shows the manufacturing process of the ready mixed concrete of Embodiment 1.
- FIG. 1 is a system diagram of a mixer truck according to a first embodiment. It is a flowchart which shows the manufacturing process of the ready mixed concrete of Embodiment 1.
- the ready mixed concrete transport device of Embodiment 1 includes a vehicle body 10, a mixer drum 20, a hopper 30, a chute 35, a hydraulic motor 40 that is a hydraulic motor, a hydraulic pressure
- the mixer vehicle 1 includes a hydraulic pump 50 that is a pump, an engine 60 that is a driving device, a pressure sensor 70 that is a pressure detection device, and a control device 80.
- the vehicle body 10 includes a cabin 11, a mount 13, and an engine 60.
- the cabin 11 is provided on the front side of the vehicle body 10.
- the gantry 13 is provided on the vehicle body 10 behind the cabin 11.
- the engine 60 drives the vehicle body 10 and rotationally drives the hydraulic pump 50 as will be described later.
- the engine 60 is disposed below the cabin 11.
- the mixer drum 20 has a drum body 21, a drive shaft 23, and two drum blades 25.
- the drum body 21 is cylindrical.
- the drum body 21 has an opening 27 having one end opened. Further, the drum body 21 is closed by a closing portion 29 at the other end in the back direction when viewed from one end.
- the mixer drum 20 rotates on the pedestal 13 in a forward tilt posture in which the opening 27 of the drum body 21 is positioned above the rear end of the vehicle body 10 and the opening 27 of the drum body 21 is lifted above the closing part 29. It is installed freely.
- the drive shaft 23 is connected to the center of the closing portion 29 of the drum body 21 and extends outward from the drum body 21.
- the drive shaft 23 extends on the center line of the rotation shaft of the mixer drum 20.
- Each drum blade 25 is helically fixed along the inner wall surface of the drum body 21 with a predetermined interval. Each drum blade 25 rotates with the drum body 21.
- the hopper 30 has an input port 31 that opens while spreading upward.
- the hopper 30 has a discharge port 33 having a lower end opened forward and downward.
- the hopper 30 has a discharge port 33 facing the center of the opening 27 of the drum body 21.
- the raw material of ready-mixed concrete and the like input from the input port 31 of the hopper 30 is input into the drum main body 21 from the opening 27 of the drum main body 21 through the discharge port 33 of the hopper 30.
- the chute 35 has a semi-cylindrical shape and extends long with the inner surface facing upward.
- the base end of the chute 35 is disposed below the opening 27 of the drum body 21.
- the chute 35 is supported so that its distal end is rotatable in the horizontal and vertical directions with the base end as the center.
- the chute 35 can guide the ready mixed concrete discharged from the opening 27 of the drum body 21 to a desired position.
- the hydraulic motor 40 is mounted on the gantry 13.
- the hydraulic motor 40 is connected to the drive shaft 23 of the mixer drum 20 via a speed reducer 37 as shown in FIGS.
- the hydraulic motor 40 is a two-speed type that can switch the discharge capacity of the hydraulic oil in two stages of large and small.
- the hydraulic motor 40 has a motor regulator 41 that switches the discharge capacity.
- the hydraulic pump 50 is also mounted on the mount 13.
- the hydraulic pump 50 is connected to a power take-out shaft 61 of the engine 60.
- the hydraulic pump 50 and the hydraulic motor 40 each have two inflow and outflow ports for hydraulic oil.
- a hydraulic circuit that forms a closed circuit is configured by a flow path 51 that communicates the inflow and outflow ports of the hydraulic pump 50 and the hydraulic motor 40. Further, the hydraulic circuit can circulate the hydraulic oil in both directions by switching the supply and discharge directions of the hydraulic pump 50 and the hydraulic motor 40.
- the engine 60 includes a throttle adjuster 63 that adjusts the output of the engine 60 and an engine rotation detection sensor 65 that detects the rotation speed of the engine 60.
- the pressure sensor 70 is attached to the flow path 51 constituting the hydraulic circuit.
- the pressure sensor 70 detects the driving pressure of the hydraulic motor 40 when the mixer drum 20 is rotated forward.
- the mixer truck 1 rotates the mixer drum 20 in the forward direction, the raw material and water of ready-mixed concrete kneaded in the drum body 21 move in the back direction from the opening 27 of the drum body 21.
- the engine 60 is started, the operating device 90 is operated to start the rotation of the mixer drum 20, and the ready-mixed concrete raw material is gradually introduced into the inlet 31 of the hopper 30, and the water in the drum body 21 is Knead together.
- the hydraulic motor 40 is in the first speed.
- the control device 80 determines whether or not the engine 60 is in an idling state, and commands the hydraulic pump 50 to output a predetermined amount corresponding to the engine speed.
- the pressure sensor 70 detects the drive pressure of the hydraulic motor 40 by the control device 80 as shown in FIG. 3 (step S1).
- the control device 80 changes the hydraulic motor 40 from the first speed to the second speed (step S2). That is, the torque of the hydraulic motor 40 is reduced by reducing the discharge capacity of the hydraulic motor 40.
- the control device 80 drives the engine 60 at the first rotational speed A (the rotational speed corresponding to rotating the mixer drum 20 at the second speed of the hydraulic motor 40 at a predetermined rotational speed) (step S3). Execute the rotation process.
- the drive pressure (step S1) detected by the pressure sensor 70 is larger than the first pressure value
- the control device 80 sets the hydraulic motor 40 to the first speed (step S6).
- the first pressure value has an upper threshold value and a lower threshold value. For this reason, when the detected pressure of the pressure sensor 70 becomes equal to or lower than the lower threshold value of the first pressure value in step S1, it is determined that the detected pressure of the pressure sensor 70 is equal to or lower than the first pressure value. Is determined to be equal to or higher than the first pressure value (the same applies hereinafter).
- the drive pressure (step S4) of the hydraulic motor 40 detected by the pressure sensor 70 is smaller than the second pressure value due to a kneading state with a high water content and low viscosity, or a small amount of ready-mixed concrete manufactured.
- the first rotation process continues until a predetermined time (a kneading time predetermined according to the amount of ready-mixed concrete to be manufactured and its properties) has elapsed (step S5).
- a predetermined time a kneading time predetermined according to the amount of ready-mixed concrete to be manufactured and its properties
- step S4 when the drive pressure (step S4) of the hydraulic motor 40 detected by the pressure sensor 70 during the first rotation process becomes equal to or higher than the second pressure value, the control device 80 sets the hydraulic motor 40 to the first speed (step S6). That is, the torque of the hydraulic motor 40 is increased by increasing the discharge capacity of the hydraulic motor 40. Then, the control device 80 increases the engine 60 to the second rotational speed B (the rotational speed corresponding to rotating the mixer drum 20 at the second speed of the hydraulic motor 40 at a predetermined rotational speed) (step S7), and the second Execute the rotation process.
- step S6 the drive pressure of the hydraulic motor 40 detected by the pressure sensor 70 during the first rotation process becomes equal to or higher than the second pressure value
- the second pressure value has an upper threshold value and a lower threshold value. Therefore, in step 5, when the detected pressure of the pressure sensor 70 becomes equal to or lower than the lower threshold value of the second pressure value, it is determined that the detected pressure of the pressure sensor 70 is equal to or lower than the second pressure value. Is determined to be equal to or higher than the second pressure value (the same applies hereinafter).
- step S1 The driving pressure of the hydraulic motor 40 detected by the pressure sensor 70 (step S1) until a predetermined time (a kneading time determined in advance depending on the amount of ready-mixed concrete to be manufactured and its properties) has passed (step S1). Is larger than the first pressure value (the upper threshold value of the first pressure value), steps S1 and S6 to S8 are repeated. Further, when the driving pressure (step S1) of the hydraulic motor 40 detected by the pressure sensor 70 becomes equal to or lower than the first pressure value (lower threshold value of the first pressure value), for example, when water is added during the kneading.
- the control device 80 rotates the mixer drum 20 in accordance with the drive pressure (kneading state) of the hydraulic motor 40 detected by the pressure sensor 70 as described above.
- step S8 when a predetermined amount of water is introduced into the drum body 21 and a predetermined time elapses (step S8) and the driving pressure amount of the hydraulic motor 40 is stabilized, kneading is completed and the pressure sensor 70 is replaced with the hydraulic motor. 40 drive pressure is detected (step S9).
- the control device 80 sets the hydraulic motor 40 to the second speed (step S10).
- the control device 80 sets the hydraulic motor 40 to the first speed (step S11).
- step S12 returns the engine 60 to idling rotation
- step S13 stops the protrusion of hydraulic fluid from the hydraulic pump 50
- the mixer vehicle 1 includes the mixer drum 20, the hydraulic motor 40, the hydraulic pump 50, the engine 60, the pressure sensor 70, and the control device 80.
- the mixer drum 20 kneads the raw material of ready-mixed concrete and water.
- the raw material of ready mixed concrete is cement, aggregate, admixture and the like.
- the hydraulic motor 40 rotates the mixer drum 20.
- the hydraulic motor 40 is a two-speed type that can switch the discharge capacity of the hydraulic oil in two stages of large and small.
- the hydraulic pump 50 circulates hydraulic oil with the hydraulic motor 40.
- the engine 60 drives the hydraulic pump 50 to rotate.
- the pressure sensor 70 detects the driving pressure of the hydraulic motor 40.
- the control device 80 drives the engine 60 at the first rotational speed while setting the hydraulic motor 40 to the second speed. Then, the first rotation process for rotating the mixer drum 20 is performed. Further, when the pressure value detected by the pressure sensor 70 is greater than the first pressure value (the upper threshold value of the first pressure value), the control device 80 causes the engine 60 to move from the first rotation speed while the hydraulic motor 40 is set to the first speed. The second rotation step of rotating the mixer drum 20 by driving at a higher second rotation speed is executed.
- the rotational load of the mixer drum 20 is small when the amount of water in the mixture of the raw material of ready-mixed concrete and water is high and the viscosity is low, or the amount of ready-mixed concrete produced is small.
- the pressure value detected by the pressure sensor 70 is equal to or lower than the first pressure value (the lower threshold value of the first pressure value)
- the mixer vehicle 1 sets the engine 60 to the first rotational speed while setting the hydraulic motor 40 to the second speed.
- the first rotation step of rotating the mixer drum by driving is performed. In this first rotation process, even if the engine 60 is driven at a first rotation speed lower than the second rotation speed, the hydraulic motor 40 is at the second speed, so that the mixer car 1 rotates the mixer drum 20 at the maximum rotation. Can do.
- the engine 60 is driven at the first rotation speed lower than the second rotation speed. Therefore, the mixer vehicle 1 can reduce the consumption of fuel for driving the engine 60. And noise can be reduced.
- the rotational load on the mixer drum 20 is large.
- the pressure value detected by the pressure sensor 70 is larger than the first pressure value (the upper threshold value of the first pressure value)
- the mixer vehicle 1 causes the engine 60 to move from the first rotation speed while the hydraulic motor 40 is set to the first speed.
- a second rotation process for driving at a higher second rotation speed is performed.
- the mixer truck 1 can reliably rotate the mixer drum 20 and knead the ready-mixed concrete raw material and water even when the rotational load of the mixer drum 20 increases.
- the mixer truck 1 of Embodiment 1 can satisfactorily produce ready-mixed concrete.
- this mixer vehicle 1 when the pressure value detected by the pressure sensor 70 when the driving pressure of the hydraulic motor 40 is stabilized is equal to or lower than the first pressure value (lower threshold value of the first pressure value), the hydraulic motor 40. Is set to the second speed, and if it is larger than the first pressure value (the upper threshold value of the first pressure value), the hydraulic motor 40 is set to the first speed.
- the kneading of the ready-mixed concrete raw material and water is completed. It is considered a smelting state. For this reason, this mixer vehicle 1 makes the hydraulic motor 40 1st speed or 2nd speed according to the kneading
- the mixer vehicle 1 rotates the mixer drum 20 with the hydraulic motor 40 set to the second speed without changing the rotation speed (first rotation speed or second rotation speed) of the engine 60.
- the mixer vehicle 1 rotates the mixer drum 20 with the hydraulic motor 40 at the first speed without changing the rotational speed (first rotational speed or second rotational speed) of the engine 60.
- the mixer truck 1 can efficiently rotate the mixer drum 20 in accordance with the kneaded state of the ready-mixed concrete that has been kneaded.
- the mixer vehicle 1 is configured such that the pressure value detected by the pressure sensor 70 during execution of the first rotation step is greater than the first pressure value (the upper threshold value of the first pressure value).
- the engine 60 is driven at the first rotational speed until it becomes equal to or higher than the second pressure value (the upper threshold value of the second pressure value), and when it reaches the second pressure value (the upper threshold value of the second pressure value), the second rotation process is executed.
- the raw material of ready-mixed concrete is additionally charged to the mixer drum 20 or the like, and the kneading state is high in viscosity, the rotational load on the mixer drum 20 increases.
- the mixer vehicle 1 When the pressure value detected by the pressure sensor 70 becomes equal to or greater than the second pressure value (the upper threshold value of the first pressure value) greater than the first pressure value (the upper threshold value of the first pressure value), the mixer vehicle 1 Two rotation steps are performed. As a result, the mixer vehicle 1 can reliably rotate the mixer drum 20 in accordance with the rotational load of the mixer drum 20 and knead the raw material of ready-mixed concrete and water. Further, the mixer vehicle 1 can reduce the consumption of fuel for driving the engine 60 and can also reduce the noise.
- each of the first pressure value and the second pressure value has a threshold value. For this reason, when the pressure sensor 70 detects the first pressure value or the second pressure value, it has an upper threshold and a lower threshold for each of the first pressure value and the second pressure value. The influence of noise in the range below and below the lower threshold can be avoided. For this reason, the mixer vehicle 1 can suppress fluctuations in the rotational speed of the engine 60 and reduce fuel consumption.
- the present invention is not limited to the first embodiment described with reference to the above description and drawings.
- the following embodiments are also included in the technical scope of the present invention.
- the engine that rotationally drives the hydraulic pump is also used as the engine that travels the vehicle body.
- the hydraulic pump may be rotationally driven by an engine other than the engine that travels the vehicle body. In this case, since the rotational speed of the engine that rotationally drives the hydraulic pump can be freely adjusted regardless of the traveling state of the vehicle body, ready-mixed concrete can be manufactured while the vehicle body is traveling.
- the hydraulic motor is of the second speed type, but the discharge capacity may be changed at the third speed or higher or steplessly.
- the hydraulic motor is set to the first speed or the second speed according to the pressure value detected by the pressure sensor when the predetermined time has elapsed and the driving pressure is stabilized. The operator may check the kneading state and manually switch the hydraulic motor.
- the hydraulic motor and hydraulic pump that use hydraulic oil as a driving fluid are provided. However, a hydraulic motor and hydraulic pump that use a fluid other than hydraulic oil as a driving fluid may be used.
- the drive pressure of the hydraulic motor detected by the pressure sensor is compared with the first pressure value in step S1, and compared with the second pressure value that is larger than the first pressure value in step S4.
- the pressure values compared in steps S1 and S4 may be the same pressure value.
- the first pressure value and the second pressure value have threshold values, but may not have threshold values.
- the driving pressure of the hydraulic motor is detected and is equal to or less than the first pressure value.
- Step S9 the drive pressure of the hydraulic motor is not detected, the hydraulic motor is set to the first speed, the engine is returned to idling rotation, the hydraulic oil is stopped from protruding from the hydraulic pump, and ready mixed
- the production of concrete may be completed.
- 20 ... mixer drum, 40 ... hydraulic motor (hydraulic motor), 50 ... hydraulic pump (hydraulic pump), 60 ... engine (driving device), 70 ... pressure sensor (pressure detecting device), 80 ... control device
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Abstract
Description
<実施形態1>
実施形態1のレディミクストコンクリート輸送装置は、図1及び図2に示すように、車体10、ミキサドラム20、ホッパ(hopper)30、シュート(chute)35、液圧モーターである油圧モーター40、液圧ポンプである油圧ポンプ50、駆動装置であるエンジン60、圧力検出装置である圧力センサ(sensor)70、及び制御装置80を備えたミキサ車1である。
(1)実施形態1では、ミキサ車であったが、車体を有していないレディミクストコンクリート製造装置であってもよい。
(2)実施形態1では、油圧ポンプを回転駆動するエンジンが車体を走行させるエンジンを兼用したが、車体を走行させるエンジンとは別のエンジンで油圧ポンプを回転駆動してもよい。この場合、油圧ポンプを回転駆動するエンジンの回転数を車体の走行状態に関係なく自由に調整することができるため、車体を走行させながらレディミクストコンクリートを製造することができる。
(3)実施形態1では、油圧モーターが2速式であったが、3速以上又は無段階で吐出容量を変更することができるものであってもよい。
(4)実施形態1では、所定時間が経過し、駆動圧力が安定した際の圧力センサが検出する圧力値に応じて油圧モーターを1速又は2速にしたが、圧力センサの検出によらず、作業者が混錬状態を確認して油圧モーターを手動で切り替えてもよい。
(5)実施形態1では、作動油を駆動流体とする油圧モーター、油圧ポンプを備えているが、作動油以外の流体を駆動流体とする液圧モーター、液圧ポンプであってもよい。
(6)実施形態1では、圧力センサが検出した油圧モーターの駆動圧力をステップS1においては第1圧力値と比較し、ステップS4においては第1圧力値よりも大きい第2圧力値と比較しているが、ステップS1及びS4において比較する圧力値は同じ圧力値であってもよい。
(7)実施形態1では、第1圧力値及び第2圧力値が閾値を有していたが、閾値を有していなくてもよい。
(8)実施形態1では、所定時間が経過して(ステップS5又はステップS8)油圧モーターの駆動圧力が安定し、混錬が完了すると、油圧モーターの駆動圧力を検出して第1圧力値以下であるかを判断した(ステップS9)が、油圧モーターの駆動圧力を検出せず、油圧モーターを1速にし、エンジンをアイドリング回転に戻し、油圧ポンプから作動油の突出を停止して、レディミクストコンクリートの製造を完了してもよい。
Claims (7)
- 投入されたセメント、骨材、混和材等のレディミクストコンクリートの原材料と水とを混練するミキサドラムと、
作動液の吐出容量が可変であり、前記ミキサドラムを回転させる液圧モーターと、
前記液圧モーターとの間で作動液を循環させる液圧ポンプと、
前記液圧ポンプを回転駆動させる駆動装置と、
前記液圧モーターの駆動圧力を検出する圧力検出装置と、
前記圧力検出装置が検出する圧力値が第1圧力値以下であると、前記液圧モーターの吐出容量を小さくしつつ前記駆動装置を第1回転数で駆動して前記ミキサドラムを回転させる第1回転工程を実行させ、前記第1圧力値よりも大きいと、前記液圧モーターの吐出容量を大きくしつつ前記駆動装置を前記第1回転数よりも高い第2回転数で駆動して前記ミキサドラムを回転させる第2回転工程を実行させる制御装置と、
を備えていることを特徴とするレディミクストコンクリート製造装置又は輸送装置。 - 前記制御装置は、前記駆動圧力が安定した際の前記圧力検出装置が検出する圧力値が前記第1圧力値以下であると、前記液圧モーターの吐出容量を小さくし、前記第1圧力値より大きいと、前記液圧モーターの吐出容量を大きくすることを特徴とする請求項1記載のレディミクストコンクリート製造装置又は輸送装置。
- 前記制御装置は、前記第1回転工程を実行している際に前記圧力検出装置が検出する圧力値が前記第1圧力値よりも大きい第2圧力値以上になるまで前記駆動装置を前記第1回転数で駆動し、前記第2圧力値以上になると、前記第2回転工程を実行させることを特徴とする請求項1又は2記載のレディミクストコンクリート製造装置又は輸送装置。
- 前記第1圧力値又は前記第2圧力値はそれぞれ閾値を有していることを特徴とする請求項1乃至3のいずれか1項記載のレディミクストコンクリート製造装置又は輸送装置。
- 駆動装置によって回転駆動される液圧ポンプとの間で作動液が循環して回転する液圧モーターが、セメント、骨材、混和材等のレディミクストコンクリートの原材料と水とが投入されたミキサドラムを回転し、前記レディミクストコンクリートの原材料と水とを混錬する際、
前記液圧モーターの駆動圧力を検出する圧力検出装置が第1圧力値以下の圧力値を検出すると、前記液圧モーターの吐出容量を小さくしつつ前記駆動装置を第1回転数で駆動して前記ミキサドラムを回転させる第1回転工程と、
前記圧力検出装置が前記第1圧力値よりも大きい圧力値を検出すると、前記液圧モーターの吐出容量を大きくしつつ前記駆動装置を前記第1回転数よりも高い第2回転数で駆動して前記ミキサドラムを回転させる第2回転工程と、
を備えていることを特徴とするレディミクストコンクリート製造装置又は輸送装置の制御方法。 - 前記駆動圧力が安定した際に前記圧力検出装置が検出する圧力値が前記第1圧力値以下であると前記液圧モーターの吐出容量を小さくし、前記第1圧力値より大きいと前記液圧モーターの吐出容量を大きくすることを特徴とする請求項5記載のレディミクストコンクリート製造装置又は輸送装置の制御方法。
- 前記第1回転工程を実行している際に前記圧力検出装置が検出する圧力値が前記第1圧力値よりも大きい第2圧力値以上になるまで前記駆動装置を前記第1回転数で駆動し、前記第2圧力値以上になると、前記第2回転工程を実行することを特徴とする請求項5又は6記載のレディミクストコンクリート製造装置又は輸送装置の制御方法。
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| AU2017243822A AU2017243822B2 (en) | 2016-03-28 | 2017-02-21 | Ready-mixed concrete manufacturing apparatus or transporting apparatus and method for controlling same |
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| CN110717215A (zh) * | 2019-10-24 | 2020-01-21 | 南华大学 | 挤密螺纹桩成桩提钻速度确定方法、装置、设备及系统 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0666709A (ja) * | 1992-08-20 | 1994-03-11 | Ishikawajima Constr Mach Co | コンクリートスランプ計測方法及び生コンクリート製造装置 |
| JP2003220884A (ja) * | 2002-01-31 | 2003-08-05 | Kayaba Ind Co Ltd | ミキサドラムの駆動制御装置 |
| WO2015160610A1 (en) * | 2014-04-14 | 2015-10-22 | Verifi Llc | Dynamic segregation monitoring of concrete |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0666709A (ja) * | 1992-08-20 | 1994-03-11 | Ishikawajima Constr Mach Co | コンクリートスランプ計測方法及び生コンクリート製造装置 |
| JP2003220884A (ja) * | 2002-01-31 | 2003-08-05 | Kayaba Ind Co Ltd | ミキサドラムの駆動制御装置 |
| WO2015160610A1 (en) * | 2014-04-14 | 2015-10-22 | Verifi Llc | Dynamic segregation monitoring of concrete |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110717215A (zh) * | 2019-10-24 | 2020-01-21 | 南华大学 | 挤密螺纹桩成桩提钻速度确定方法、装置、设备及系统 |
| CN110717215B (zh) * | 2019-10-24 | 2021-08-27 | 南华大学 | 挤密螺纹桩成桩提钻速度确定方法、装置、设备及系统 |
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| AU2017243822B2 (en) | 2019-10-31 |
| JP6725284B2 (ja) | 2020-07-15 |
| JP2017177340A (ja) | 2017-10-05 |
| NZ747103A (en) | 2020-01-31 |
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