JPS6129850B2 - - Google Patents
Info
- Publication number
- JPS6129850B2 JPS6129850B2 JP55100767A JP10076780A JPS6129850B2 JP S6129850 B2 JPS6129850 B2 JP S6129850B2 JP 55100767 A JP55100767 A JP 55100767A JP 10076780 A JP10076780 A JP 10076780A JP S6129850 B2 JPS6129850 B2 JP S6129850B2
- Authority
- JP
- Japan
- Prior art keywords
- flow path
- hydraulic pump
- pressure flow
- drum
- tank
- 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.)
- Expired
Links
- 230000005540 biological transmission Effects 0.000 description 13
- 230000007935 neutral effect Effects 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Description
【発明の詳細な説明】
本発明はミキサ車のドラム駆動装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drum drive device for a mixer truck.
従来のミキサ車のドラム駆動装置は第１図に示
す如く、トランスミツシヨン０１の側面に設けら
れた動力取出装置０２を介してエンジン０３の動
力を伝達される可変油圧ポンプ０４と、ドラム０
５を駆動させる油圧モータ０６とを閉回路０７上
に設け、更に前記閉回路０７内に常時油を補給す
るチヤージポンプ０８を可変油圧ポンプ０４と一
体に作動するように設けた構造で前記ドラム駆動
装置はトランスミツシヨンのチエンジレバーが中
立位置のときにのみ車輪側と「断」になり、それ
以外は常に車輪側と「接」になつた状態を維持す
るようになつている。 As shown in FIG. 1, a conventional drum drive device for a mixer truck includes a variable hydraulic pump 04 to which the power of an engine 03 is transmitted via a power take-off device 02 provided on the side of a transmission 01, and a drum 0.
5 is provided on a closed circuit 07, and a charge pump 08 for constantly replenishing oil into the closed circuit 07 is provided to operate integrally with the variable hydraulic pump 04. The transmission is disconnected from the wheel side only when the change lever is in the neutral position, and otherwise always remains in contact with the wheel side.
ところが前記構造であれば、チエンジレバー操
作を行なうためにエンジンのクラツチを「断」に
しても、車輪側とドラム駆動装置側とは連結され
た状態になつているので、走行時にチエンジレバ
ー操作を行なおうとしても車輪側の回転にドラム
駆動装置側の回転を同調させるのがドラム駆動装
置側の多大な負荷により困難となりそのためチエ
ンジレバー操作が非常に重くなり無理に操作しよ
うとすれば、トランスミツシヨンの歯車が破損す
る等の危険があつた。 However, with the above structure, even if the engine clutch is disengaged to operate the change lever, the wheel side and drum drive side are still connected, so it is not necessary to operate the change lever while driving. Even if you try to do so, it will be difficult to synchronize the rotation of the drum drive unit with the rotation of the wheels due to the heavy load on the drum drive unit, making it extremely difficult to operate the change lever. There was a risk that the transmission gears would be damaged.
本発明は前記の如き欠点を解消するため、ドラ
ム駆動装置を改良し、トランスミツシヨンのチエ
ンジレバー操作時にはドラム駆動装置側の負荷が
ほとんど発生しないようにして、ドラム駆動装置
側の回転を車輪側の回転に容易に同調させること
ができるようにしたものである。 In order to eliminate the above-mentioned drawbacks, the present invention improves the drum drive device so that almost no load is generated on the drum drive device side when operating the change lever of the transmission, and the rotation of the drum drive device is transferred to the wheel side. It is designed so that it can be easily synchronized with the rotation of.
以下実施例を図面にて説明すると、１は車両走
行用エンジンで、該エンジン１にはクラツチ２を
介してトランスミツシヨン３が接続され、前記ト
ランスミツシヨン３はチエンジレバー４の操作に
よりエンジン１の動力を任意に変換させて後輪
５，５に伝達するようにになつている。６はトラ
ンスミツシヨン３の側面に設けられた動力取出装
置で、該動力取出装置６はエンジン１の動力を取
出し、ドライブシヤフト７を介して後述するドラ
ム駆動装置８に伝達し、前記動力をドラム駆動装
置８よりチエーン・スプロケツト等の伝達手段９
を介してドラム１０に伝達するようになつてい
る。 An embodiment will be described below with reference to the drawings. Reference numeral 1 denotes a vehicle running engine, and a transmission 3 is connected to the engine 1 via a clutch 2. The transmission 3 is connected to the engine by operating a change lever 4. The power is arbitrarily converted and transmitted to the rear wheels 5, 5. Reference numeral 6 denotes a power extraction device installed on the side of the transmission 3. The power extraction device 6 extracts the power of the engine 1, transmits it to a drum drive device 8 (described later) via a drive shaft 7, and transmits the power to the drum drive device 8, which will be described later. Transmission means 9 such as a chain and sprocket from the drive device 8
The signal is transmitted to the drum 10 via the .
尚、後輪５，５側とドラム駆動装置８側とはチ
エンジレバー４が中立位置に操作された場合以外
は常に連結された状態になつている。 Note that the rear wheels 5, 5 side and the drum drive device 8 side are always connected except when the change lever 4 is operated to the neutral position.
次にドラム駆動装置８について説明すると、前
記ドライブシヤフト７に接続された自吸式の可変
油圧ポンプ１１と、ドラム１０側の伝達手段９に
減速機１２を介して接続された油圧モータ１３と
をドラム１０撹拌時の高圧流路１４と低圧流路１
５とにてそれぞれ連通させることにより閉回路１
６を形成してある。 Next, the drum drive device 8 will be described. It includes a self-priming variable hydraulic pump 11 connected to the drive shaft 7, and a hydraulic motor 13 connected to a transmission means 9 on the drum 10 side via a reducer 12. High pressure channel 14 and low pressure channel 1 during stirring of drum 10
A closed circuit 1 is established by communicating with each other through 5 and 5.
6 is formed.
前記各流路１４，１５のうち可変油圧ポンプ１
１に近接した位置にはチエツク弁１７，１７の介
装された補助流路１８がタンク１９側に連通する
ように接続されている。前記補助流路１８によ
り、閉回路１６内の油が漏れなどにより減少して
も可変油圧ポンプ１１の自吸力にてタンク１９よ
り補給できるようになており、特にタンク１９か
ら可変油圧ポンプ１までの流路長さを短かくして
配管抵抗を小さくし、可変油圧ポンプ１１の自吸
効率を良くしてある。 Among the flow paths 14 and 15, the variable hydraulic pump 1
An auxiliary flow path 18 in which check valves 17, 17 are interposed is connected to the tank 19 at a position close to the tank 19. The auxiliary flow path 18 allows oil in the closed circuit 16 to be replenished from the tank 19 by the self-priming power of the variable hydraulic pump 11 even if the oil in the closed circuit 16 decreases due to leakage or the like. The length of the flow path is shortened to reduce piping resistance and improve the self-priming efficiency of the variable hydraulic pump 11.
前記高圧流路１４上には切換弁２０を設けてあ
り、前記切換弁２０は通常時には高圧流路１４の
可変油圧ポンプ１１側と油圧モータ１３とを連通
させるとともにタンク１９側への分岐流路２１を
遮断するようになつており、次にクラツチペダル
２２を踏んでクラツチ２を「断」にすると、クラ
ツチペダル２２に近接させたリミツトスイツチ２
３が働いて切換えられ、高圧流路１４の油圧モー
タ１３側を遮断するとともに高圧流路１４の可変
油圧ポンプ１１側を分岐流路２１に連通させ、油
をタンク１９に帰すようになつている。 A switching valve 20 is provided on the high-pressure flow path 14, and the switching valve 20 normally communicates the variable hydraulic pump 11 side of the high-pressure flow path 14 with the hydraulic motor 13, and also provides a branch flow path to the tank 19 side. 21, and when the clutch pedal 22 is then depressed to disengage the clutch 2, the limit switch 2, which is placed close to the clutch pedal 22, is shut off.
3 is activated, the hydraulic motor 13 side of the high pressure flow path 14 is shut off, and the variable hydraulic pump 11 side of the high pressure flow path 14 is communicated with the branch flow path 21, so that oil is returned to the tank 19. .
尚、実施例では切換弁を切換えることにより高
圧流路の可変油圧ポンプ側をタンク側に連通させ
るようにしているが、高圧流路と低圧流路との間
に油圧モータをバイパスさせるバイパス流路を設
け、このバイパス流路上に切換弁を設け通常時は
バイパス流路を遮断しておき、切換時にはバイパ
ス流路を連通させるようにしても同様の作用効果
を有するものである。 In the embodiment, the variable hydraulic pump side of the high-pressure flow path is communicated with the tank side by switching the switching valve, but a bypass flow path that bypasses the hydraulic motor is provided between the high-pressure flow path and the low-pressure flow path. Even if a switching valve is provided on the bypass flow path to shut off the bypass flow path during normal times and allow the bypass flow path to communicate during switching, the same effect can be obtained.
本発明は前記の如き構造で次に作用について説
明すると、まず停車中にドラムを回転させてドラ
ム内の生コンクリートを撹拌する場合には、チエ
ンジレバー４を中立にしておくとともにクラツチ
２を「接」にしておくと、エンジン１の動力が動
力取出装置６、ドライブシヤフト７を介して可変
油圧ポンプ１１に伝達され、その状態で可変油圧
ポンプ１１を中立位置から作動位置に操作する
と、可変油圧ポンプ１より油が高圧流路１４に送
り出され、送り出された油は切換弁２０を通つて
油圧モータ１３を作動させ、油圧モータ１３が作
動されることにより伝達手段９を介してドラム１
０を回転させるようになつている。 The present invention has the above-mentioned structure, and its operation will be explained next. First, when the drum is rotated while the drum is stopped and the fresh concrete in the drum is stirred, the change lever 4 is kept in the neutral position and the clutch 2 is "closed". '', the power of the engine 1 is transmitted to the variable hydraulic pump 11 via the power take-off device 6 and the drive shaft 7, and when the variable hydraulic pump 11 is operated from the neutral position to the operating position in this state, the variable hydraulic pump 1, oil is sent to the high-pressure flow path 14, the sent oil passes through the switching valve 20, operates the hydraulic motor 13, and when the hydraulic motor 13 is operated, it is transmitted to the drum 1 via the transmission means 9.
It is designed to rotate 0.
その際閉回路１６内は漏れなどにより油が幾分
減少するが、可変油圧ポンプ１１が自吸式になつ
ているので不足分の油をタンク１９より補助流路
１８を通つて閉回路１６内に補給できるようにな
つている。 At this time, the oil in the closed circuit 16 will decrease somewhat due to leakage, etc., but since the variable hydraulic pump 11 is of a self-priming type, the insufficient oil will be pumped from the tank 19 through the auxiliary flow path 18 and into the closed circuit 16. It is now possible to replenish supplies.
次に走行中にドラムを回転させた状態でトラン
スミツシヨンのチエンジレバー操作を行なう場合
には、まずクラツチペダル２２を踏んでクラツチ
２を「断」にすると後輪５，５は惰性で回転しそ
れとともにリミツトスイツチ２３が働いて切換弁
２０が切換わり、それまで連通していた高圧流路
１４の可変油圧ポンプ１１側と油圧モータ１３側
が遮断されるとともに可変油圧ポンプ１１側がタ
ンク１９に連通される。そのため可変油圧ポンプ
１１を作動させても、自吸力にてタンク１９より
吸い込んだ油を高圧流路１４を通つてタンク１９
に帰油させるので略んど負荷が発生せず、後輪
５，５側の惰性による回転に動力取出装置６側の
回転が容易に同調されてチエンジレバー操作をス
ムーズに行なうことができる。 Next, when operating the transmission change lever while the drum is rotating while driving, first step on the clutch pedal 22 to disengage the clutch 2, and the rear wheels 5, 5 will rotate by inertia. At the same time, the limit switch 23 operates and the switching valve 20 is switched, and the variable hydraulic pump 11 side and the hydraulic motor 13 side of the high pressure flow path 14, which had been communicating until then, are cut off, and the variable hydraulic pump 11 side is communicated with the tank 19. . Therefore, even if the variable hydraulic pump 11 is operated, the oil sucked from the tank 19 by self-priming force is passed through the high-pressure flow path 14 to the tank 19.
Since the oil is returned to the engine, almost no load is generated, and the rotation of the power take-off device 6 is easily synchronized with the rotation of the rear wheels 5, 5 due to inertia, so that the change lever can be operated smoothly.
チエンジレバー操作が終るとクラツチペダル２
２を離せばクラツチ２が「接」になるとともに切
換弁２０が切換わつて高圧流路１４が連通されド
ラム１０の回転が維持されることになる。 When the change lever operation is finished, the clutch pedal 2
When the clutch 2 is released, the clutch 2 is brought into contact, the switching valve 20 is switched, the high pressure passage 14 is communicated, and the rotation of the drum 10 is maintained.
以上の如く本発明はトランスミツシヨンのチエ
ンジレバーの操作時にドラム駆動装置側に負荷が
略んど発生しないようにしたので、車輪側の回転
にドラム駆動装置側の回転を容易に同調させるこ
とができ、チエンジレバーの操作をスムーズに行
なうことができ、又従来のようにトランスミツシ
ヨンの歯車を破損するようなこともなくなる。 As described above, in the present invention, almost no load is generated on the drum drive device side when operating the change lever of the transmission, so the rotation of the drum drive device can be easily synchronized with the rotation of the wheels. The change lever can be operated smoothly, and the gears of the transmission are not damaged as in the conventional case.
第１図は従来のドラム駆動回路図、第２図は本
発明のドラム駆動回路図である。
１は可変油圧ポンプ、１３は油圧モータ、１６
は閉回路、１８は補助流路、２０は切換弁であ
る。
FIG. 1 is a conventional drum drive circuit diagram, and FIG. 2 is a drum drive circuit diagram of the present invention. 1 is a variable hydraulic pump, 13 is a hydraulic motor, 16
18 is a closed circuit, 18 is an auxiliary flow path, and 20 is a switching valve.
Claims (1)
油圧ポンプとドラムを駆動させる油圧モータとを
高圧流路と低圧流路とにてそれぞれ連通させるこ
とにより閉回路を形成し、前記各流路には各流路
をタンクに連通させるとともに各流路側にのみ流
通させるチエツク弁の介装された補助流路を接続
し、更に前記高圧流路側にはエンジンのクラツチ
操作に連動させて切換えることにより高圧流路を
タンク側若しくは油圧ポンプをバイパスさせて低
圧流路側に連通させる切換弁を設けてなるミキサ
車のドラム駆動装置。1 A closed circuit is formed by connecting a self-priming variable hydraulic pump operated by engine power and a hydraulic motor that drives a drum through a high-pressure flow path and a low-pressure flow path, and each of the above-mentioned flow paths In addition, an auxiliary flow path equipped with a check valve that communicates each flow path with the tank and allows flow only to each flow path side is connected to the high pressure flow path side, and the high pressure flow path side is switched in conjunction with the clutch operation of the engine. A drum drive device for a mixer truck, which is equipped with a switching valve that connects a high-pressure flow path to a tank side or a low-pressure flow path by bypassing a hydraulic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10076780A JPS5725907A (en) | 1980-07-22 | 1980-07-22 | Driving device for drum of mixer-mobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10076780A JPS5725907A (en) | 1980-07-22 | 1980-07-22 | Driving device for drum of mixer-mobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5725907A JPS5725907A (en) | 1982-02-10 |
| JPS6129850B2 true JPS6129850B2 (en) | 1986-07-09 |
Family
ID=14282642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10076780A Granted JPS5725907A (en) | 1980-07-22 | 1980-07-22 | Driving device for drum of mixer-mobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5725907A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57125309U (en) * | 1981-01-30 | 1982-08-04 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52151467A (en) * | 1976-06-10 | 1977-12-15 | Shin Meiwa Ind Co Ltd | Oil pressure circuit of mixer car and like |
-
1980
- 1980-07-22 JP JP10076780A patent/JPS5725907A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52151467A (en) * | 1976-06-10 | 1977-12-15 | Shin Meiwa Ind Co Ltd | Oil pressure circuit of mixer car and like |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5725907A (en) | 1982-02-10 |
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