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JP3681686B2 - Asphalt finisher tamper equipment - Google Patents
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JP3681686B2 - Asphalt finisher tamper equipment - Google Patents

Asphalt finisher tamper equipment Download PDF

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Publication number
JP3681686B2
JP3681686B2 JP2002010609A JP2002010609A JP3681686B2 JP 3681686 B2 JP3681686 B2 JP 3681686B2 JP 2002010609 A JP2002010609 A JP 2002010609A JP 2002010609 A JP2002010609 A JP 2002010609A JP 3681686 B2 JP3681686 B2 JP 3681686B2
Authority
JP
Japan
Prior art keywords
tamper
motor
control valve
electromagnetic control
asphalt finisher
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 - Fee Related
Application number
JP2002010609A
Other languages
Japanese (ja)
Other versions
JP2003213617A (en
Inventor
信行 石井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo SHI Construction Machinery Co Ltd
Original Assignee
Sumitomo SHI Construction Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo SHI Construction Machinery Co Ltd filed Critical Sumitomo SHI Construction Machinery Co Ltd
Priority to JP2002010609A priority Critical patent/JP3681686B2/en
Publication of JP2003213617A publication Critical patent/JP2003213617A/en
Application granted granted Critical
Publication of JP3681686B2 publication Critical patent/JP3681686B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【0001】
【発明の属する技術分野】
本発明はアスファルトフィニッシャのタンパ装置に関するものであり、特に、過負荷によるタンパ装置の破損防止に関するものである。
【0002】
【従来の技術及び発明が解決しようとする課題】
従来の此種アスファルトフィニッシャのスクリード装置には、上下に振動させてアスファルト合材を敷き固めるためのタンパ装置が備えられている。該タンパ装置の駆動源としては一般的に油圧式のタンパモータが使用され、電磁制御弁にてこのタンパモータへ供給する圧油を制御している。しかし、舗装作業中にタンパ装置に過負荷がかかった場合は、タンパモータが破損する虞があった。
【0003】
そこで、タンパ装置に過負荷がかかった場合でも、タンパモータの破損を防止するために解決すべき技術的課題が生じてくるのであり、本発明はこの課題を解決することを目的とする。
【0004】
【課題を解決するための手段】
本発明は上記目的を達成するために提案されたものであり、舗装機械のスクリード装置に設けられたタンパ装置に於いて、該タンパ装置を駆動するタンパモータとモータ駆動用電磁制御弁との間に、圧力スイッチと流量制御弁を介装し、タンパに過負荷が作用して前記圧力スイッチが作動したときは、前記モータ駆動用電磁制御弁のソレノイドへの通電が遮断されて前記モータ駆動用電磁制御弁が閉止位置に切り換り、タンパモータへの圧油供給を停止するように構成されたアスファルトフィニッシャのタンパ装置を提供するものである。
【0005】
【発明の実施の形態】
以下、本発明の一実施の形態を図面に従って詳述する。図1は舗装機械の一例としてアスファルトフィニッシャ10を示し、該アスファルトフィニッシャ10は機体の前部にアスファルト合材を受け入れるホッパ装置11を備え、該ホッパ装置11に受け入れたアスファルト合材を機体後部のスクリュー装置12に搬送するコンベヤ装置13と、機体の後方に牽引されてアスファルト合材を敷き均すスクリード装置14等から構成されている。スクリード装置14にはタンパ装置15が備えられており、該タンパ装置15を上下に振動させてアスファルト合材を敷き固める。
【0006】
図2はタンパ装置15の駆動回路を示し、該タンパ装置15を駆動するタンパモータ16は油圧源17から供給される圧油によって回転し、モータ駆動用の電磁制御弁18にてその回転方向及び回転速度が制御される。前記タンパモータ16と電磁制御弁18との間には、圧力スイッチ19と流量制御弁20を介装してある。コントローラ(図示せず)からの指令により前記電磁制御弁18のソレノイド21が励磁されると、電磁制御弁18のスプールが(ロ)位置に切り換り、前記タンパモータ16に圧油が供給されてタンパ装置15が駆動される。そして、流量制御弁20の絞り開度を調整してタンク22へ逃がす圧油の量を増減し、タンパモータ16への圧油供給量を変更することにより、タンパモータ16の回転速度を変速させてタンパの上下速度を変更する。
【0007】
また、前記圧力スイッチ19とソレノイド21は直列に接続されており、タンパ駆動スイッチ23をオンしたときは、前記ソレノイド19に通電されてソレノイド19がオンとなるため、前述したように、電磁制御弁18のスプールが(ロ)位置に切り換わり、タンパモータ16が回転してタンパ装置15が駆動状態となる。
【0008】
ここで、タンパ装置15に過負荷がかかったときはこの油圧回路が高圧となり、前記圧力スイッチ19が作動して接点が開放される。従って、前記ソレノイド19への通電が停止されてソレノイド19がオフとなり、電磁制御弁18のスプールが(イ)位置に切り換り、タンパモータ16への圧油の供給が停止される。依って、タンパモータ16の回転が停止してタンパ装置15が非駆動状態となり、タンパモータ16の破損を防止することができる。
【0009】
尚、本発明は、本発明の精神を逸脱しない限り種々の改変を為すことができ、そして、本発明が該改変されたものに及ぶことは当然である。
【0010】
【発明の効果】
本発明は上記一実施の形態に詳述したように、請求項1記載の発明は、タンパモータとモータ駆動用電磁制御弁との間に、圧力スイッチと流量制御弁を介装し、圧力スイッチが作動したときは前記電磁制御弁のソレノイドへの通電を遮断するように形成したので、タンパに過負荷がかかったときには圧力スイッチの作動にて前記ソレノイドがオフとなり、電磁制御弁が閉止位置に切り換る。従って、タンパモータへの圧油の供給が停止し、タンパモータの破損を防止することができる。
【図面の簡単な説明】
図は本発明の一実施の形態を示すものである。
【図1】アスファルトフィニッシャの側面図
【図2】(a)タンパ装置の油圧回路図。
(b)タンパ装置の電気回路図。
【符号の説明】
10 アスファルトフィニッシャ
15 タンパ装置
16 タンパモータ
17 油圧源
18 電磁制御弁
19 圧力スイッチ
20 流量制御弁
21 ソレノイド
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tamper device for an asphalt finisher, and more particularly to prevention of damage to the tamper device due to overload.
[0002]
[Prior art and problems to be solved by the invention]
A conventional screed device for this type of asphalt finisher is provided with a tamper device that vibrates up and down to spread and solidify the asphalt mixture. A hydraulic tamper motor is generally used as a drive source of the tamper device, and pressure oil supplied to the tamper motor is controlled by an electromagnetic control valve. However, if the tamper device is overloaded during the paving operation, the tamper motor may be damaged.
[0003]
Therefore, even when an overload is applied to the tamper device, a technical problem to be solved arises in order to prevent the tamper motor from being damaged, and the present invention aims to solve this problem.
[0004]
[Means for Solving the Problems]
The present invention has been proposed to achieve the above object, and in a tamper device provided in a screed device of a paving machine, between a tamper motor that drives the tamper device and an electromagnetic control valve for driving a motor. When the pressure switch is operated due to an overload acting on the tamper with a pressure switch and a flow rate control valve, energization to the solenoid of the motor drive electromagnetic control valve is cut off and the motor drive electromagnetic A tamper device for an asphalt finisher configured to stop a supply of pressure oil to a tamper motor by switching a control valve to a closed position.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows an asphalt finisher 10 as an example of a paving machine. The asphalt finisher 10 is provided with a hopper device 11 for receiving asphalt mixture at the front portion of the machine body, and the asphalt mixture material received at the hopper device 11 is a screw at the rear part of the machine body. Consists of a conveyor device 13 transported to the device 12 and a screed device 14 that is pulled to the rear of the machine body and spreads the asphalt mixture. The screed device 14 is provided with a tamper device 15, and the tamper device 15 is vibrated up and down to spread and solidify the asphalt mixture.
[0006]
FIG. 2 shows a drive circuit of the tamper device 15, and a tamper motor 16 that drives the tamper device 15 is rotated by pressure oil supplied from a hydraulic power source 17, and its rotation direction and rotation are driven by an electromagnetic control valve 18 for driving the motor. Speed is controlled. A pressure switch 19 and a flow rate control valve 20 are interposed between the tamper motor 16 and the electromagnetic control valve 18. When the solenoid 21 of the electromagnetic control valve 18 is excited by a command from a controller (not shown), the spool of the electromagnetic control valve 18 is switched to the (B) position, and pressure oil is supplied to the tamper motor 16. The tamper device 15 is driven. Then, by adjusting the throttle opening of the flow control valve 20 to increase or decrease the amount of pressure oil that is released to the tank 22 and changing the amount of pressure oil supplied to the tamper motor 16, the tamper motor 16 is rotated to change the rotational speed. Change the vertical speed of.
[0007]
Further, the pressure switch 19 and the solenoid 21 are connected in series, and when the tamper drive switch 23 is turned on, the solenoid 19 is turned on by energizing the solenoid 19. The 18 spools are switched to the (B) position, the tamper motor 16 is rotated, and the tamper device 15 is driven.
[0008]
Here, when the tamper device 15 is overloaded, the hydraulic circuit becomes high pressure, and the pressure switch 19 is activated to open the contact. Accordingly, the energization of the solenoid 19 is stopped, the solenoid 19 is turned off, the spool of the electromagnetic control valve 18 is switched to the position (a), and the supply of pressure oil to the tamper motor 16 is stopped. Therefore, the rotation of the tamper motor 16 is stopped and the tamper device 15 is brought into a non-driven state, so that the tamper motor 16 can be prevented from being damaged.
[0009]
It should be noted that the present invention can be variously modified without departing from the spirit of the present invention, and the present invention naturally extends to the modified ones.
[0010]
【The invention's effect】
As described in detail in the above embodiment, the present invention is characterized in that a pressure switch and a flow control valve are interposed between a tamper motor and a motor drive electromagnetic control valve, and the pressure switch is Since the solenoid control valve is de-energized when activated, the solenoid is turned off by the pressure switch when the tamper is overloaded, and the solenoid control valve is switched to the closed position. Change. Accordingly, the supply of pressure oil to the tamper motor is stopped, and the tamper motor can be prevented from being damaged.
[Brief description of the drawings]
The figure shows an embodiment of the present invention.
FIG. 1 is a side view of an asphalt finisher. FIG. 2 (a) is a hydraulic circuit diagram of a tamper device.
(B) Electrical circuit diagram of the tamper device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Asphalt finisher 15 Tamper device 16 Tamper motor 17 Hydraulic source 18 Electromagnetic control valve 19 Pressure switch 20 Flow control valve 21 Solenoid

Claims (1)

舗装機械のスクリード装置に設けられたタンパ装置に於いて、該タンパ装置を駆動するタンパモータとモータ駆動用電磁制御弁との間に、圧力スイッチと流量制御弁を介装し、タンパに過負荷が作用して前記圧力スイッチが作動したときは、前記モータ駆動用電磁制御弁のソレノイドへの通電が遮断されて前記モータ駆動用電磁制御弁が閉止位置に切り換り、タンパモータへの圧油供給を停止するように構成されたことを特徴とするアスファルトフィニッシャのタンパ装置。In the tamper device provided in the screed device of the paving machine, a pressure switch and a flow control valve are interposed between the tamper motor that drives the tamper device and the electromagnetic control valve for driving the motor, and the tamper is overloaded. When the pressure switch is actuated to operate, the energization to the solenoid of the motor drive electromagnetic control valve is cut off, the motor drive electromagnetic control valve is switched to the closed position, and pressure oil is supplied to the tamper motor. An asphalt finisher tamper device characterized by being configured to stop.
JP2002010609A 2002-01-18 2002-01-18 Asphalt finisher tamper equipment Expired - Fee Related JP3681686B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002010609A JP3681686B2 (en) 2002-01-18 2002-01-18 Asphalt finisher tamper equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002010609A JP3681686B2 (en) 2002-01-18 2002-01-18 Asphalt finisher tamper equipment

Publications (2)

Publication Number Publication Date
JP2003213617A JP2003213617A (en) 2003-07-30
JP3681686B2 true JP3681686B2 (en) 2005-08-10

Family

ID=27648300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002010609A Expired - Fee Related JP3681686B2 (en) 2002-01-18 2002-01-18 Asphalt finisher tamper equipment

Country Status (1)

Country Link
JP (1) JP3681686B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852077A (en) * 2012-08-18 2013-01-02 徐州凯莫尔重工科技有限公司 Hydraulic control valve group for retractable stretching screeds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852077A (en) * 2012-08-18 2013-01-02 徐州凯莫尔重工科技有限公司 Hydraulic control valve group for retractable stretching screeds

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