JPS5852546A - Slump value measuring method of ready mixed concrete in track mixer - Google Patents
Slump value measuring method of ready mixed concrete in track mixerInfo
- Publication number
- JPS5852546A JPS5852546A JP56150137A JP15013781A JPS5852546A JP S5852546 A JPS5852546 A JP S5852546A JP 56150137 A JP56150137 A JP 56150137A JP 15013781 A JP15013781 A JP 15013781A JP S5852546 A JPS5852546 A JP S5852546A
- Authority
- JP
- Japan
- Prior art keywords
- slump value
- drum
- blade
- center
- mixed concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 7
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
-
- 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
- B28C5/4203—Details; Accessories
- B28C5/4206—Control apparatus; Drive systems, e.g. coupled to the vehicle drive-system
- B28C5/422—Controlling or measuring devices
-
- 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
- B28C7/022—Controlling the operation of the mixing by measuring the consistency or composition of the mixture, e.g. with supply of a missing component
- B28C7/024—Controlling the operation of the mixing by measuring the consistency or composition of the mixture, e.g. with supply of a missing component by measuring properties of the mixture, e.g. moisture, electrical resistivity, density
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; ceramics; glass; bricks
- G01N33/383—Concrete, cement
Abstract
Description
【発明の詳細な説明】
この発明は、生コンクリートのスランプ値を、トラック
ミキサのドラム内に収容したまま測定するスランプ値測
定方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slump value measuring method for measuring the slump value of fresh concrete while it is accommodated in a drum of a truck mixer.
現在、生コンクリートに界面活性剤よシなる高流動化剤
を添加することにより、その生コンクリートをハイスラ
ンプ化する方法が実用化されているが、その高流動化剤
の添加量は、生コンクリートの実スランプ値を知った上
で決める必要がある。Currently, a method of making fresh concrete high slump by adding a high fluidizing agent such as a surfactant to the fresh concrete is in practical use, but the amount of the high fluidizing agent added is It is necessary to decide after knowing the actual slump value of.
従来、トラックミキサから生コンクリートを打設する場
合には、打設直前にドラムから生コンクリートの試料を
取シ出し、スランプコーン等のスランプ測定装置によっ
てそのスランプ値を測定し、そのスランプ値に基づいて
高流動化剤の添加量を決めているが、このようなスラン
プ値の測定のために作業員が必要である上、この測定作
業は煩雑でその上、時間がかかる。Conventionally, when pouring fresh concrete from a truck mixer, a sample of fresh concrete is taken from the drum immediately before pouring, its slump value is measured using a slump measuring device such as a slump cone, and the slump value is measured based on the slump value. However, in order to measure the slump value, a worker is required, and this measurement work is complicated and time-consuming.
この発明は上記事情に鑑みて提案されたもので、生コン
クリートの試料をドラム内から取り出すことなしに、き
わめて容易にかつ能率的にスランプ値を測定することが
できるスランプ値測定方法を得ることを目的とするもの
で、その特徴とするところは、ドラムのセンタシャフト
の中心を貫通してドラム内に延出させた回転軸に羽根を
取シ付け、この回転軸を回転させたとき、前記羽根が生
コンクリートから受ける抵抗を検出して、その抵抗の
・大きさによシ生コンクリートのスランプ値を測定する
というものである。This invention has been proposed in view of the above circumstances, and aims to provide a slump value measuring method that can extremely easily and efficiently measure the slump value without taking out a sample of fresh concrete from inside the drum. The purpose of this system is to attach a blade to a rotating shaft that passes through the center of the center shaft of the drum and extends into the drum, and when the rotating shaft is rotated, the blades detects the resistance received from fresh concrete and calculates the resistance
・It measures the slump value of fresh concrete depending on its size.
以下、本発明の一実施例を図面に基づいて説明する。Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図はトラックミキサの側面図で、生コンクリートを
収容するドラム１は、前部の回転中心に取Ｆ）付けたセ
ンタシャフト２が前方の架台３において支持され、後部
が後方の架台牛上のローラ５に支持されて回転可能とさ
れている。そして、自動車のエンジンで駆動される油圧
ポンプｄの油圧源によシ駆動される図示路の油圧モータ
によってドラム１と一体のスプロケット７が駆動されて
、ドラム１が回転する。Figure 1 is a side view of a truck mixer, in which a drum 1 containing ready-mixed concrete is mounted at the center of rotation at the front, and a center shaft 2 attached to it is supported on a pedestal 3 in the front, and the rear part is placed above the rear pedestal. It is supported by rollers 5 and is rotatable. Then, a sprocket 7 integrated with the drum 1 is driven by a hydraulic motor along the path shown, which is driven by the hydraulic power source of a hydraulic pump d driven by an automobile engine, and the drum 1 rotates.
前記センタシャフト２の部分を詳しく説明すると、セン
タシャフト２は、第２図に示すように、ドラム１および
スプロケット７と一体にされ、架台３に固定した軸受台
８内の軸受９によシ支持されており、このセンタシャフ
ト２の中心には回転軸１０が貫通して設けられている。To explain the center shaft 2 in detail, as shown in FIG. A rotating shaft 10 is provided through the center of the center shaft 2.
この回転軸１０のドラム１内部の先端には、２枚ないし
４枚などからなる羽根１１が取り付けられており、反対
側にはカップリング１２を介してベーン形の油圧モータ
１３の出力軸が接続されている。この油圧モータ１３は
架台３に取り付けた台１４に設置されている。A vane 11 consisting of two to four blades is attached to the tip of the rotating shaft 10 inside the drum 1, and the output shaft of a vane-shaped hydraulic motor 13 is connected to the opposite side via a coupling 12. has been done. This hydraulic motor 13 is installed on a stand 14 attached to the pedestal 3.
この油圧モータ１３を作動させる油圧回路を説明すると
、第３図に示すように手動の切換弁１５、圧力補償形の
流量調整弁１０が設けられ、かつ、流量調整弁１６と油
圧モータ１３との間に圧力計１７が設けられている。こ
の切換弁１５と圧力計１７とは運転室内に設けられてい
る。なお、油圧ポンプ０は、ドラム１の回転駆動に用い
られる油圧モータを始め、その他の油圧機器にも圧油を
供給するものでもよい。第３図ではそれらの系統の図示
を省略している。To explain the hydraulic circuit that operates this hydraulic motor 13, as shown in FIG. A pressure gauge 17 is provided between them. The switching valve 15 and the pressure gauge 17 are provided in the operator's cab. The hydraulic pump 0 may also supply pressure oil to a hydraulic motor used to drive the rotation of the drum 1 as well as other hydraulic equipment. In FIG. 3, illustration of these systems is omitted.
次に作用について説明する。Next, the effect will be explained.
ドラム１内に生コンクリートが積載されている状態で生
コンクリートのスランプ値を測定しようとする場合、運
転室内で切換弁１５を操作して開とすれば、流量調整弁
１６によって一定の流量の圧油が油圧モータ１３に供給
され、油圧モータ１３は一定速度で回転し、ドラム１内
の羽根１１が回転して生コンクリートを攪拌する。その
際、羽根１１は生コンクリートの軟かさに応じた抵抗を
受ける。When trying to measure the slump value of fresh concrete with fresh concrete loaded in the drum 1, open the selector valve 15 in the operator's cab, and the flow rate adjustment valve 16 will adjust the pressure at a constant flow rate. Oil is supplied to the hydraulic motor 13, which rotates at a constant speed, and the blades 11 inside the drum 1 rotate to stir the fresh concrete. At this time, the blades 11 receive resistance depending on the softness of the fresh concrete.
したがって羽根１１を回転させる油圧モータ１３の出力
軸は、生コンクリートの軟かさに応じたトルクでもって
回転する。このトルクの大きさは、圧油の圧力に比例す
るので、圧力計１７によって検出することができ、した
がって、生コンクリートのスランプ値と前記トルクとの
関係、すなわち、生コンクリートのスランプ値と圧力と
の関係をあらかじめ求めておくことによシ、圧力計１７
の読みから直ちにスランプ値を知ることができる。なお
、スランプ値と圧力との関係は、種々の軟かさの生コン
クリートを本案のドラムに入れて羽根１１を攪拌したと
きの圧力計１７の目盛を読み、かつ、その生コンクリー
トのスランプ値をスランプ試験によって測定することに
より求めることができる。Therefore, the output shaft of the hydraulic motor 13 that rotates the blades 11 rotates with a torque that corresponds to the softness of the fresh concrete. Since the magnitude of this torque is proportional to the pressure of the pressure oil, it can be detected by the pressure gauge 17. Therefore, the relationship between the slump value of fresh concrete and the torque, that is, the slump value of fresh concrete and the pressure. By determining the relationship in advance, pressure gauge 17
You can immediately know the slump value from the reading. The relationship between the slump value and the pressure can be determined by reading the scale of the pressure gauge 17 when fresh concrete of various softness is placed in the drum of the present invention and stirring with the blades 11, and then calculating the slump value of the fresh concrete by reading the scale of the pressure gauge 17. It can be determined by measuring through tests.
なお、上記実施例は、羽根１１の回転軸１０を油圧モー
タ１３により一定の速度で回転したときのトルクを圧力
計で検出するものであるが、回転軸１０のトルクをスト
レーンゲージなどを用いた電気的計測装置によって検出
してもよい。また、油圧モータを一定トルクで回転させ
、そのときの羽根１１の回転速度の大きさによって、羽
根１１が生コンクリートから受ける抵抗の大きさを検出
してスランプ値を知ることもできる。In the above embodiment, the torque when the rotary shaft 10 of the blade 11 is rotated at a constant speed by the hydraulic motor 13 is detected using a pressure gauge, but the torque of the rotary shaft 10 can be detected using a strain gauge or the like. It may also be detected by an electrical measuring device. Alternatively, the slump value can be determined by rotating the hydraulic motor with a constant torque and detecting the amount of resistance that the blades 11 receive from the fresh concrete based on the rotational speed of the blades 11 at that time.
また、油圧モータを用いずに、電動モータによって羽根
１１を回転させ、この羽根１１の回転軸１０が受けるト
ルクによって、あるいは回転１ｊ１０の回転速度によっ
て、羽根１１が受ける抵抗の大きさを検出し、これに基
づいて生コンクリートのスランプ値を知ることもできる
。要するに、センタシャフト２の中心を貫通させドラム
内に延出させた回転軸１０に取シ付けた羽根１１を回転
させ、この羽根１１が生コンクリートから受ける抵抗を
検出するという方法によシ生コンクリートのスランプ値
を知るものであればよい。Further, the blade 11 is rotated by an electric motor without using a hydraulic motor, and the magnitude of the resistance that the blade 11 receives is detected by the torque received by the rotating shaft 10 of the blade 11 or by the rotational speed of rotation 1j10, Based on this, it is also possible to know the slump value of fresh concrete. In short, the method is to rotate a blade 11 attached to a rotating shaft 10 that penetrates the center of the center shaft 2 and extends into the drum, and to detect the resistance that the blade 11 receives from the fresh concrete. It is sufficient if the slump value of the slump value is known.
以上説明したように、本発明の方法によれば、生コンク
リートの試料をドラムから取シ出さすにそのままでスラ
ンプ値を測定することができ、しかも、切換弁の操作お
よび圧力計の砂み取りなどの簡単な操作で行うことがで
き、捷だ、運転室内で操作するようにすれば、運搬中に
スランプ値を知ることができるので、省人、省力化が大
幅に達成される。As explained above, according to the method of the present invention, the slump value can be measured as soon as the sample of fresh concrete is taken out from the drum, and the slump value can be measured as it is, by operating the switching valve and removing sand from the pressure gauge. This can be done with a simple operation such as the following, and if you operate it inside the operator's cab, you can know the slump value while transporting it, resulting in significant manpower and labor savings.
図面は本発明の一実施例を示すもので、第１図はトラッ
クミキサ側面図、第２図は第１図における要部の拡大断
面図、第３図は油圧モータを駆動する油圧回路図である
。
１°゛°°ドラム、２・・・・・センタシャフト、１０
・・・・・回転軸、１１・・・・・羽根、１３・・・・
・油圧モータ、１５・・・・・切換弁、１６・・・・・
流量調整弁、１７・・・・・圧力計。
２３The drawings show one embodiment of the present invention; FIG. 1 is a side view of a truck mixer, FIG. 2 is an enlarged sectional view of the main parts in FIG. 1, and FIG. 3 is a hydraulic circuit diagram for driving a hydraulic motor. be. 1°゛°°drum, 2...center shaft, 10
... Rotating shaft, 11 ... Vane, 13 ...
・Hydraulic motor, 15...Switching valve, 16...
Flow rate adjustment valve, 17...pressure gauge. 23
Claims (1)
出させた回転軸に羽根を取υ付け、この回転軸を回転さ
せたとき、前記羽根が生コンクリートから受ける抵抗を
検出して、その抵抗の大きさによシ生コンクリートのス
ランプ値を測定することを特徴とするトラックミキサに
おける生コンクリートのスランプ値測定方法。A blade is attached to a rotating shaft extending into the drum through the center of the center shaft of the drum, and when the rotating shaft is rotated, the resistance that the blade receives from the fresh concrete is detected and the resistance is measured. A method for measuring the slump value of fresh concrete in a truck mixer, the method comprising measuring the slump value of fresh concrete depending on the size of the concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56150137A JPS5852546A (en) | 1981-09-22 | 1981-09-22 | Slump value measuring method of ready mixed concrete in track mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56150137A JPS5852546A (en) | 1981-09-22 | 1981-09-22 | Slump value measuring method of ready mixed concrete in track mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5852546A true JPS5852546A (en) | 1983-03-28 |
Family
ID=15490291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56150137A Pending JPS5852546A (en) | 1981-09-22 | 1981-09-22 | Slump value measuring method of ready mixed concrete in track mixer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5852546A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61272631A (en) * | 1985-05-29 | 1986-12-02 | Ishikawajima Harima Heavy Ind Co Ltd | Measuring method for concrete slump |
| JPH047355U (en) * | 1990-05-07 | 1992-01-23 | ||
| JPH04248443A (en) * | 1991-02-01 | 1992-09-03 | Ohbayashi Corp | Consistency control apparatus |
| JPH04254739A (en) * | 1991-02-05 | 1992-09-10 | Ohbayashi Corp | Consistency meter |
| JP2001097749A (en) * | 1999-09-29 | 2001-04-10 | Toa Harbor Works Co Ltd | Method for automatic display of slump value of concrete loaded on one truck mixer car |
| JP2005069717A (en) * | 2003-08-27 | 2005-03-17 | Kurosaki Harima Corp | Method for evaluating fluidity of kneaded matter within mixer |
| JP2020201041A (en) * | 2019-06-06 | 2020-12-17 | 世紀東急工業株式会社 | Slump measuring machine and slump measuring method |
| EP4114630A4 (en) * | 2020-03-02 | 2024-04-10 | Command Alkon Inc | Probe and method for monitoring fresh concrete using an electromechanical actuator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5117072A (en) * | 1974-08-02 | 1976-02-10 | Yoshiko Arai | MOOSAIKANGENSHOORYOONO ROKASOOCHI |
| JPS55101036A (en) * | 1979-01-26 | 1980-08-01 | Mitsubishi Electric Corp | Viscosity measuring instrument |
-
1981
- 1981-09-22 JP JP56150137A patent/JPS5852546A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5117072A (en) * | 1974-08-02 | 1976-02-10 | Yoshiko Arai | MOOSAIKANGENSHOORYOONO ROKASOOCHI |
| JPS55101036A (en) * | 1979-01-26 | 1980-08-01 | Mitsubishi Electric Corp | Viscosity measuring instrument |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61272631A (en) * | 1985-05-29 | 1986-12-02 | Ishikawajima Harima Heavy Ind Co Ltd | Measuring method for concrete slump |
| JPH047355U (en) * | 1990-05-07 | 1992-01-23 | ||
| JPH04248443A (en) * | 1991-02-01 | 1992-09-03 | Ohbayashi Corp | Consistency control apparatus |
| JPH04254739A (en) * | 1991-02-05 | 1992-09-10 | Ohbayashi Corp | Consistency meter |
| JP2001097749A (en) * | 1999-09-29 | 2001-04-10 | Toa Harbor Works Co Ltd | Method for automatic display of slump value of concrete loaded on one truck mixer car |
| JP2005069717A (en) * | 2003-08-27 | 2005-03-17 | Kurosaki Harima Corp | Method for evaluating fluidity of kneaded matter within mixer |
| JP2020201041A (en) * | 2019-06-06 | 2020-12-17 | 世紀東急工業株式会社 | Slump measuring machine and slump measuring method |
| EP4114630A4 (en) * | 2020-03-02 | 2024-04-10 | Command Alkon Inc | Probe and method for monitoring fresh concrete using an electromechanical actuator |
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