JP2015197163A - Construction machine - Google Patents

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JP2015197163A
JP2015197163A JP2014075284A JP2014075284A JP2015197163A JP 2015197163 A JP2015197163 A JP 2015197163A JP 2014075284 A JP2014075284 A JP 2014075284A JP 2014075284 A JP2014075284 A JP 2014075284A JP 2015197163 A JP2015197163 A JP 2015197163A
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hydraulic
emergency escape
circuit
construction machine
work
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JP6279385B2 (en
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幸洋 渡邊
Sachihiro Watanabe
幸洋 渡邊
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Nippon Sharyo Ltd
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Nippon Sharyo Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a construction machine which allows emergency escape without the standby of a separate emergency escape system in a work site, when abnormalities occur.SOLUTION: A pile driver 11 includes an emergency escape unit 23 which includes an emergency escape hydraulic circuit L12 that connects to a work hydraulic circuit L11 to operate a lower moving body 12 and a work hydraulic system, when an engine 38 or work hydraulic pump 35, 36, 37 suffers abnormalities; emergency escape hydraulic pumps 32, 33 that supply hydraulic oil to the emergency escape hydraulic circuit L12; and motors 32a, 33a that respectively drive the emergency escape hydraulic pumps 32, 33.

Description

本発明は、建設機械に関し、詳しくは、エンジンや作業用の油圧ポンプに異常が発生して自走不可能となった際に、作業場所から脱出するための緊急脱出用の油圧回路を備えた建設機械に関する。   The present invention relates to a construction machine, and more particularly, includes an emergency escape hydraulic circuit for escaping from a work place when an abnormality occurs in an engine or a hydraulic pump for work and the self-propulsion becomes impossible. Concerning construction machinery.

鉄道軌道の敷設作業や保守作業、周辺施設の整備作業などに、エンジンにより駆動される作業用の油圧ポンプから油圧回路を介して供給される作動油により作動する走行装置及び作業用油圧装置を備えた杭打機等の建設機械が用いられている。通常、鉄道軌道内での作業は、最終列車が通過した後、始発列車が運転を開始する前までの間に行われており、作業終了後は速やかに鉄道軌道内から退避する必要がある。   Equipped with a traveling device and a working hydraulic device that are operated by hydraulic oil supplied via a hydraulic circuit from a working hydraulic pump driven by an engine for laying and maintenance work of railway tracks, maintenance work of surrounding facilities, etc. Construction machines such as pile drivers are used. Normally, the work on the railway track is performed after the last train passes and before the first train starts operation, and it is necessary to evacuate the railway track immediately after the work is completed.

また、架線下や跨線橋下、トンネル内などの鉄道軌道内で作業を行う際には、何らかの原因で建設機械のエンジンや作業用の油圧ポンプに異常が発生して走行装置などに圧油を供給できなくなり、建設機械が鉄道軌道内から退避できなくなった場合に備えて、建設機械に予め備えてある緊急脱出用の油圧回路に、外部から作動油を供給して建設機械を鉄道軌道内から脱出させるための緊急脱出装置を待機させておくことが行われている。   Also, when working on railway tracks such as under overhead lines, overpass bridges, and tunnels, for some reason, an abnormality occurs in the construction machine engine or work hydraulic pump, and pressure oil is supplied to the traveling equipment. In the event that the construction machine cannot be retreated from the railroad track, hydraulic oil is supplied from the outside to the emergency escape hydraulic circuit that is provided in advance in the railroad track, and the construction machine escapes from the railroad track. The emergency escape device for making it wait is performed.

前記緊急脱出装置としては、異常が発生した建設機械の緊急脱出用の油圧回路に接続可能に設けられた緊急脱出用の油圧ポンプと、該緊急脱出用の油圧ポンプを駆動するエンジンと燃料タンクとを備えた、他の建設機械で輸送可能な油圧ユニットで形成されるものや（例えば、特許文献１参照。）、前記油圧ユニットと、走行装置と、建設機械に接続する油圧ホースと、該油圧ホースを巻き取るホースリールとを備え、走行可能に形成された緊急脱出装置（例えば、特許文献２参照。）が提案されており、さらに、前記油圧ユニットとして、別の建設機械の油圧ポンプを利用することも提案されている（例えば、特許文献３参照。）。   The emergency escape device includes an emergency escape hydraulic pump provided to be connectable to an emergency escape hydraulic circuit of a construction machine in which an abnormality has occurred, an engine that drives the emergency escape hydraulic pump, and a fuel tank. (See, for example, Patent Document 1), the hydraulic unit, the travel device, the hydraulic hose connected to the construction machine, and the hydraulic pressure An emergency escape device (see, for example, Patent Document 2) that includes a hose reel that winds up a hose and is configured to be able to travel has been proposed, and a hydraulic pump of another construction machine is used as the hydraulic unit. It has also been proposed (see, for example, Patent Document 3).

実開平８−６５０号公報Japanese Utility Model Publication No. 8-650 特開２０１０−１８０５３７号公報JP 2010-180537 A 特開２０１２−６７４５４号公報JP 2012-67454 A

しかし、上述の特許文献１や特許文献２のものでは、緊急脱出時以外では使用されない緊急脱出装置を、作業現場に常時待機させておく必要があることから、作業現場のスペースが待機中の緊急脱出装置に占有されると共に、緊急脱出装置の輸送コストも掛かっていた。また、油圧ユニットとして、別の建設機械の油圧ポンプを利用するものでは、１台の建設機械で作業を行う建設現場では適用し難かった。   However, in the above-mentioned Patent Document 1 and Patent Document 2, an emergency escape device that is not used except during an emergency escape needs to be kept on standby at the work site. In addition to being occupied by the escape device, the transportation cost of the emergency escape device was also high. In addition, when a hydraulic pump of another construction machine is used as the hydraulic unit, it is difficult to apply it at a construction site where work is performed with one construction machine.

そこで本発明は、エンジンや作業用の油圧ポンプに異常が発生した際に、作業現場で用いられている発電機を用いて緊急脱出することができる建設機械を提供することを目的としている。   Therefore, an object of the present invention is to provide a construction machine capable of emergency escape using a generator used at a work site when an abnormality occurs in an engine or a hydraulic pump for work.

上記目的を達成するため、本発明の建設機械は、エンジンにより駆動される作業用の油圧ポンプから、作業用の油圧回路を介して供給される作動油により作動する走行装置及び作業用油圧装置を備えた建設機械において、該建設機械に、前記エンジン又は前記作業用の油圧ポンプに異常が発生した際に、前記作業用の油圧回路に接続して、前記走行装置及び前記作業用油圧装置を作動させるための緊急脱出用の油圧回路と、該緊急脱出用の油圧回路に作動油を供給する緊急脱出用の油圧ポンプと、該緊急脱出用の油圧ポンプを駆動するモータとを備えた緊急脱出用ユニットを設けたことを特徴としている。   In order to achieve the above object, a construction machine according to the present invention includes a traveling device and a working hydraulic device that are operated by hydraulic fluid supplied from a working hydraulic pump driven by an engine via a working hydraulic circuit. When the construction machine has an abnormality in the engine or the working hydraulic pump, the construction machine is connected to the working hydraulic circuit to operate the traveling device and the working hydraulic device. Emergency escape hydraulic circuit, an emergency escape hydraulic pump that supplies hydraulic oil to the emergency escape hydraulic circuit, and a motor that drives the emergency escape hydraulic pump It features a unit.

また、前記緊急脱出用の油圧ポンプは、前記緊急脱出用の油圧回路と、外部油圧機器の油圧回路とに切り換えて作動油を供給可能であると好ましい。さらに、前記モータの電源が可搬式エンジン発電機であると好適である。また、前記緊急脱出用の油圧回路は、作動油の供給先を前記走行装置と前記作業用油圧装置とに切換可能な切換弁を備えていると良い。   Further, it is preferable that the emergency escape hydraulic pump can be switched to the emergency escape hydraulic circuit and the hydraulic circuit of an external hydraulic device to supply hydraulic oil. Furthermore, it is preferable that the power source of the motor is a portable engine generator. The emergency escape hydraulic circuit may include a switching valve capable of switching a supply destination of hydraulic oil between the traveling device and the working hydraulic device.

本発明の建設機械によれば、作業現場で建設機械のエンジン又は前記作業用の油圧ポンプに異常が発生し、建設機械が作業現場から退避できなくなった際に、作業現場で使用されている発電機に、建設機械に設けた緊急脱出用の油圧ポンプを駆動させるモータを接続することにより、走行装置を作動させて建設機械を退避位置まで移動させることができる。   According to the construction machine of the present invention, when an abnormality occurs in the construction machine engine or the working hydraulic pump at the work site, and the construction machine cannot be retreated from the work site, the power generation used at the work site. By connecting a motor for driving an emergency escape hydraulic pump provided in the construction machine to the machine, the traveling device can be operated to move the construction machine to the retreat position.

さらに、緊急脱出用の油圧ポンプは、緊急脱出用の油圧回路と、外部油圧機器の油圧回路とに切り換えて作動油を供給可能とすることにより、緊急脱出時以外に、緊急脱出用ユニットを外部油圧機器の油圧源として利用することができ、緊急脱出用ユニットを有効に利用することができる。   In addition, the emergency escape hydraulic pump can be switched between the emergency escape hydraulic circuit and the hydraulic circuit of the external hydraulic equipment to supply hydraulic fluid, so that the emergency escape unit can be externally installed in addition to emergency escape. It can be used as a hydraulic source for hydraulic equipment, and an emergency escape unit can be used effectively.

本発明の第１形態例を示す建設機械の正面図である。It is a front view of the construction machine which shows the 1st form example of this invention. 同じく建設機械の平面図である。It is a top view of a construction machine similarly. 本発明の第１形態例を示す緊急脱出時の油圧回路の概略を示す回路図である。It is a circuit diagram which shows the outline of the hydraulic circuit at the time of emergency escape which shows the 1st form example of this invention. 本発明の第２形態例を示す緊急脱出時の油圧回路の概略を示す回路図である。It is a circuit diagram which shows the outline of the hydraulic circuit at the time of emergency escape which shows the 2nd form example of this invention.

図１乃至図３は、本発明を鋼管杭埋設仕様とした小型杭打機に適用した第１形態例を示している。この杭打機１１は、下部走行体１２（本発明の走行装置）の上に旋回ベアリングを介して上部旋回体１３を旋回可能に設けたベースマシン１４（本発明の作業用油圧装置）とを備えている。ベースマシン１４は、上部旋回体１３の前部にリーダサポート１５を介して起伏可能に設けられた上部リーダ１６と、上部旋回体１３の前端部に設けられて前記上部リーダ１６の下部に連結される下部リーダ１７と、上部リーダ１６を後方から支持するリーダ起伏シリンダ１８と、上部旋回体１３の前部で上部リーダ１６の後方に起伏可能に設けられたホース支持支柱１９と、該ホース支持支柱１９を後方から支持するホース支持支柱起伏シリンダ２０と、上部旋回体１３の前後左右の４箇所にそれぞれ設けられたジャッキ２１と、上部旋回体１３の後端部に設けられたカウンタウエイト２２と、上部旋回体１３の後部上面に設けられた緊急脱出用ユニット２３とを備えている。   FIG. 1 thru | or FIG. 3 has shown the 1st form example applied to the small pile driving machine which made this invention the steel pipe pile embedding specification. The pile driving machine 11 includes a base machine 14 (working hydraulic device according to the invention) in which an upper turning body 13 is turnable on a lower running body 12 (traveling device according to the invention) via a turning bearing. I have. The base machine 14 is connected to a lower part of the upper leader 16 provided at a front end portion of the upper swing body 13 and an upper leader 16 provided at a front portion of the upper swing body 13 via a reader support 15. A lower leader 17, a leader hoisting cylinder 18 that supports the upper leader 16 from the rear, a hose support column 19 that can be raised behind the upper reader 16 at the front of the upper swing body 13, and the hose support column Hose support column hoisting cylinder 20 that supports 19 from the rear, jacks 21 provided at four positions on the front and rear, left and right of the upper swing body 13, a counterweight 22 provided at the rear end of the upper swing body 13, And an emergency escape unit 23 provided on the upper surface of the rear part of the upper swing body 13.

上部リーダ１６及び下部リーダ１７には、左右一対のガイドパイプ２４が長手方向に連続して設けられ、該ガイドパイプ２４にガイドギブ２５を介してオーガドライブなどの作業装置２６が昇降可能に設けられている。また、下部リーダ１７の下端部には、下部振止２７が設けられている。前記作業装置２６は、上部リーダ１６及び下部リーダ１７の前面に連続して設けられたラック２８に歯合し、昇降用モータ２９，２９の駆動により作業装置２６を昇降させるラックピニオン式昇降装置を備えるとともに、作業装置２６を貫通した出力軸３０を回転駆動する出力軸駆動用モータ３１，３１を備えている。さらに、杭打機１１には、作業用油圧機器として前記昇降用モータ２９と出力軸駆動用モータ３１の他に、下部走行体１２を走行させるための走行用モータと、上部旋回体１３を旋回させるための旋回用モータと、ジャッキ２１を昇降させるジャッキシリンダと、吊上げ用のワイヤを作動させるウインチなどが設けられており、前記各作業用油圧機器は、作業用の油圧回路Ｌ１１にそれぞれ接続されている。   A pair of left and right guide pipes 24 are continuously provided in the upper leader 16 and the lower leader 17 in the longitudinal direction, and a working device 26 such as an auger drive is provided on the guide pipe 24 via a guide give 25 so as to be lifted and lowered. Yes. A lower brace 27 is provided at the lower end of the lower reader 17. The working device 26 is a rack and pinion type lifting device that meshes with a rack 28 that is continuously provided on the front surface of the upper leader 16 and the lower leader 17 and that raises and lowers the working device 26 by driving the lifting motors 29 and 29. In addition, output shaft drive motors 31, 31 that rotate the output shaft 30 penetrating the work device 26 are provided. Further, in the pile driving machine 11, in addition to the elevating motor 29 and the output shaft driving motor 31 as working hydraulic devices, a traveling motor for traveling the lower traveling body 12 and an upper turning body 13 are swung. And a winch for operating a lifting wire, and each of the working hydraulic devices is connected to a working hydraulic circuit L11. ing.

上部旋回体１３は、一側方にエンジン室１３ａ、他側方前部に運転室１３ｂ、他側方後部に機器収納ハウス１３ｃをそれぞれ備え、機器収納ハウス１３ｃの上部に前記緊急脱出用ユニット２３が設けられている。   The upper swing body 13 includes an engine room 13a on one side, a cab 13b on the front side on the other side, and an equipment storage house 13c on the rear side on the other side, and the emergency escape unit 23 above the equipment storage house 13c. Is provided.

緊急脱出用ユニット２３は、２台の緊急脱出用の油圧ポンプ３２，３３と、該油圧ポンプ３２，３３を駆動するモータ３２ａ，３３ａと、切換弁３４と、作業用の油圧回路Ｌ１１に接続される緊急脱出用の油圧回路Ｌ１２とを備えている。   The emergency escape unit 23 is connected to two emergency escape hydraulic pumps 32 and 33, motors 32a and 33a for driving the hydraulic pumps 32 and 33, a switching valve 34, and a working hydraulic circuit L11. And an emergency escape hydraulic circuit L12.

作業用の油圧回路Ｌ１１は、図３に示すように、複数の作業用の油圧ポンプ３５，３６，３７と、緊急脱出用の油圧回路Ｌ１２から作業用の油圧ポンプ３５，３６，３７への逆流を防止する逆止弁３５ａ，３６ａ，３７ａと、作業用の油圧ポンプ３５，３６，３７を駆動するためのエンジン３８と、油圧ポンプ３５，３６，３７から供給される作動油を所定の回路に切換供給するための複数のコントロール弁３９，４０，４１と、作動油タンク４２とを備えている。油圧ポンプ３５により作動油が供給される回路Ｌ１３は、逆止弁３５ａを介してコントロール弁３９に接続され、コントロール弁３９から、上部旋回体１３を旋回させるための旋回用モータと、作業装置２６を昇降させる昇降用モータ２９，２９と、作業装置２６に設けた出力軸３０を回転駆動させる出力軸駆動用モータ３１，３１と、ジャッキ２１を伸縮させるジャッキシリンダとに作動油が切換供給される。油圧ポンプ３６により作動油が供給される回路Ｌ１４は、逆止弁３６ａを介してコントロール弁４０に接続され、コントロール弁４０から、リーダ起伏シリンダ１８と、下部走行体１２を走行させるための走行用モータとに作動油が切換供給される。油圧ポンプ３７により作動油が供給される回路Ｌ１５は、逆止弁３７ａを介してコントロール弁４１に接続され、コントロール弁４１から制御系の各機器に作動油が切換供給される。   As shown in FIG. 3, the working hydraulic circuit L11 includes a plurality of working hydraulic pumps 35, 36, and 37, and a reverse flow from the emergency escape hydraulic circuit L12 to the working hydraulic pumps 35, 36, and 37. Check valves 35a, 36a, 37a, an engine 38 for driving the working hydraulic pumps 35, 36, 37, and hydraulic oil supplied from the hydraulic pumps 35, 36, 37 into a predetermined circuit. A plurality of control valves 39, 40, 41 for switching supply and a hydraulic oil tank 42 are provided. A circuit L13 to which hydraulic oil is supplied by the hydraulic pump 35 is connected to a control valve 39 via a check valve 35a, and a turning motor for turning the upper turning body 13 from the control valve 39, and the work device 26. The hydraulic oil is switched and supplied to lifting motors 29 and 29 for lifting and lowering, output shaft driving motors 31 and 31 for rotating and driving an output shaft 30 provided in the working device 26, and a jack cylinder for extending and contracting the jack 21. . The circuit L14 to which the hydraulic oil is supplied by the hydraulic pump 36 is connected to the control valve 40 via the check valve 36a, and is used for running the leader hoisting cylinder 18 and the lower running body 12 from the control valve 40. The hydraulic oil is switched and supplied to the motor. The circuit L15 to which the hydraulic oil is supplied by the hydraulic pump 37 is connected to the control valve 41 via the check valve 37a, and the hydraulic oil is switched and supplied from the control valve 41 to each device in the control system.

緊急脱出用の油圧回路Ｌ１２は、図３に示すようにモータ３２ａによって作動する油圧ポンプ３２により作動油が供給される回路Ｌ１６と、モータ３３ａによって作動する油圧ポンプ３３により作動油が供給される回路Ｌ１７とを有し、回路Ｌ１７は、コントロール弁４１と逆止弁３７ａとの間に接続される回路Ｌ１５に接続される。また、回路Ｌ１６は、切換弁３４を有し、該切換弁３４を一方に切り換えることにより回路Ｌ１８を介して、コントロール弁３９と逆止弁３５ａとの間に接続される回路Ｌ１３に接続され、切換弁３４を他方に切り換えることにより回路Ｌ１９を介してコントロール弁４０と逆止弁３６ａとの間に接続される回路Ｌ１４に接続される。図３では、主な回路のみを図示し、コントロール弁３９，４０，４１から各機器に接続される回路や、各機器からの戻り回路の図示は省略している。   As shown in FIG. 3, the emergency escape hydraulic circuit L12 includes a circuit L16 supplied with hydraulic oil by a hydraulic pump 32 operated by a motor 32a and a circuit supplied with hydraulic oil by a hydraulic pump 33 operated by a motor 33a. The circuit L17 is connected to a circuit L15 connected between the control valve 41 and the check valve 37a. The circuit L16 has a switching valve 34, and is connected to a circuit L13 connected between the control valve 39 and the check valve 35a via the circuit L18 by switching the switching valve 34 to one side. By switching the switching valve 34 to the other, it is connected to the circuit L14 connected between the control valve 40 and the check valve 36a via the circuit L19. In FIG. 3, only the main circuit is shown, and the circuit connected to each device from the control valves 39, 40, 41 and the return circuit from each device are not shown.

上述のように形成された杭打機１１は、通常の作業を行う際には、切換弁３４を閉状態とし、作業用の油圧回路Ｌ１１を使用し、下部走行体１２により所定の位置に移動し、上部旋回体１３を所定の角度に旋回させ、ジャッキ２１を伸ばして接地させた後、リーダ起伏シリンダ１８などで下部リーダ１７及び上部リーダ１６の角度を調整して、昇降用モータ２９，２９を駆動させ、ラックピニオン式昇降装置により作業装置２６を昇降させるとともに、出力軸駆動用モータ３１，３１により出力軸３０を回転駆動させて杭打ち作業を行う。   The pile driving machine 11 formed as described above closes the switching valve 34 and uses the working hydraulic circuit L11 to move to a predetermined position by the lower traveling body 12 when performing normal work. Then, after turning the upper swing body 13 to a predetermined angle and extending the jack 21 to ground, the angle of the lower leader 17 and the upper leader 16 is adjusted by the leader hoisting cylinder 18 or the like, and the lifting motors 29, 29 are adjusted. , And the working device 26 is moved up and down by the rack and pinion type lifting device, and the output shaft 30 is rotated by the output shaft driving motors 31 and 31 to perform the pile driving work.

作業中にエンジン３８又は作業用の油圧ポンプ３５，３６，３７に異常が発生し、杭打機１１が自力で作業場所から所定の退避場所まで移動できなくなった場合は、作業現場の照明などに使用されている可搬式の発電機４３とモータ３２ａ，３３ａとを繋ぐ。   If an abnormality occurs in the engine 38 or the hydraulic pumps 35, 36, and 37 during work, and the pile driver 11 cannot move from the work place to a predetermined retreat place by itself, it can be used for lighting at the work site. The used portable generator 43 and the motors 32a, 33a are connected.

モータ３３ａを作動させることにより、作動油タンク４２から吸入された作動油は、回路Ｌ１７を介してコントロール弁４１に供給され、該コントロール弁４１を介して各種制御機器に供給される。モータ３２ａを作動させることにより、作動油タンク４２から吸入された作動油は、切換弁３４を一方に切り換えることにより、回路Ｌ１６が切換弁３４を介して回路Ｌ１８に接続され、回路Ｌ１８が回路Ｌ１３に接続されていることから、コントロール弁３９を介して、上部旋回体１３を旋回させるための旋回用モータと、作業装置２６を昇降させる昇降用モータ２９，２９と、作業装置２６に設けた出力軸３０を回転駆動させる出力軸駆動用モータ３１，３１に作動油が切換供給される。これにより、作業装置２６や上部旋回体１３を走行可能な状態にすることができる。   By operating the motor 33a, the hydraulic oil sucked from the hydraulic oil tank 42 is supplied to the control valve 41 via the circuit L17, and is supplied to various control devices via the control valve 41. By operating the motor 32a, the hydraulic oil sucked from the hydraulic oil tank 42 switches the switching valve 34 to one side, whereby the circuit L16 is connected to the circuit L18 via the switching valve 34, and the circuit L18 is connected to the circuit L13. Are connected via the control valve 39, a turning motor for turning the upper turning body 13, elevating motors 29 and 29 for raising and lowering the working device 26, and an output provided to the working device 26. The hydraulic oil is switched and supplied to output shaft drive motors 31, 31 that rotate the shaft 30. Thereby, the working device 26 and the upper swing body 13 can be brought into a travelable state.

次に、切換弁３４を他方に切り換えることにより、回路Ｌ１６が切換弁３４を介して回路Ｌ１９に接続され、回路Ｌ１９が回路Ｌ１４に接続されていることから、コントロール弁４０を介して、リーダ起伏シリンダ１８と下部走行体１２を走行させるための走行用モータとに作動油が切換供給される。これにより、下部走行体１２を作動させて、杭打機１１を退避位置まで移動させることができる。さらに、緊急用の油圧ポンプ３３で昇圧された作動油が、回路Ｌ１７が回路Ｌ１５に接続されていることから、コントロール弁４１を介して各制御機器に作動油が供給され、運転室１３ｂ内で各制御機器の操作が可能となる。   Next, by switching the switching valve 34 to the other side, the circuit L16 is connected to the circuit L19 via the switching valve 34, and the circuit L19 is connected to the circuit L14. The hydraulic oil is switched and supplied to the cylinder 18 and the traveling motor for traveling the lower traveling body 12. Thereby, the lower traveling body 12 can be operated and the pile driving machine 11 can be moved to the retracted position. Further, since the hydraulic oil boosted by the emergency hydraulic pump 33 is connected to the circuit L15 by the circuit L17, the hydraulic oil is supplied to each control device via the control valve 41, and is generated in the cab 13b. Each control device can be operated.

これにより、杭打ち作業中の杭打機１１でエンジン３８や作業用の油圧ポンプ３５，３６，３７に異常が発生した場合でも、緊急脱出用ユニット２３を発電機４３に接続させることにより、杭打機１１を走行可能な状態にすることができるだけでなく、杭打機１１で杭打ち作業を行うことができるので、中途半端な状態で杭打ち作業を終えることなく、所定の段階まで作業を行ってから退避、脱出することができる。   As a result, even if an abnormality occurs in the engine 38 or the hydraulic pumps 35, 36, and 37 in the pile driving machine 11 during the pile driving work, the emergency escape unit 23 is connected to the generator 43, thereby making the pile Not only can the hammer 11 be able to run, but also the pile driver 11 can perform the pile driving work, so the work can be performed up to a predetermined stage without finishing the pile driving work in a halfway state. You can evacuate and escape after you go.

図４は、本発明の第２形態例を示す緊急脱出時の油圧回路の概略を示す回路図で、第１形態例と同様の構成要素を示すものには、同一の符号をそれぞれ付して、その詳細な説明は省略する。   FIG. 4 is a circuit diagram showing an outline of the hydraulic circuit at the time of emergency escape showing the second embodiment of the present invention. Components that are the same as those in the first embodiment are given the same reference numerals. Detailed description thereof will be omitted.

本形態例では、緊急用の油圧ポンプ３２は、手動切換弁５１を介して、回路Ｌ１６と回路Ｌ２１とに切り替え可能となっており、回路Ｌ２１は、逆止弁５２を介して杭打機１１とは別の外部油圧機器に接続可能となっている。また、緊急用の油圧ポンプ３３は、手動切換弁５３を介して、回路Ｌ１７と回路Ｌ２２とに切り替え可能となっており、回路Ｌ２２は、逆止弁５４を介して外部油圧機器に接続可能となっている。これにより、本形態例の杭打機１１では、緊急脱出時以外に、緊急脱出用ユニット２３を他の外部油圧機器の油圧源として利用が可能となり、緊急脱出用ユニット２３を有効に利用することができる。   In this embodiment, the emergency hydraulic pump 32 can be switched between a circuit L16 and a circuit L21 via a manual switching valve 51, and the circuit L21 is connected to the pile driving machine 11 via a check valve 52. It can be connected to a separate external hydraulic device. The emergency hydraulic pump 33 can be switched between a circuit L17 and a circuit L22 via a manual switching valve 53, and the circuit L22 can be connected to an external hydraulic device via a check valve 54. It has become. Thereby, in the pile driving machine 11 of this embodiment, it is possible to use the emergency escape unit 23 as a hydraulic power source for other external hydraulic equipment other than during emergency escape, and effectively use the emergency escape unit 23. Can do.

なお、本発明の建設機械は、杭打機に限定されるものではなく、クレーンや油圧ショベルなど自走式の建設機械に広く適用することができる。また、作業用の油圧ポンプや、緊急脱出用の油圧ポンプや、コントロール弁の数は上述の形態例に限るものではなく、油圧回路も任意であり、切換弁も適宜設ければ良い。   In addition, the construction machine of this invention is not limited to a pile driving machine, It can apply widely to self-propelled construction machines, such as a crane and a hydraulic shovel. Further, the number of working hydraulic pumps, emergency escape hydraulic pumps, and control valves is not limited to the above-described embodiment, the hydraulic circuit is arbitrary, and a switching valve may be provided as appropriate.

１１…杭打機、１２…下部走行体、１３…上部旋回体、１４…ベースマシン、１５…リーダサポート、１６…上部リーダ、１７…下部リーダ、１８…リーダ起伏シリンダ、１９…ホース支持支柱、２０…ホース支持支柱起伏シリンダ、２１…ジャッキ、２２…カウンタウエイト、２３…緊急脱出用ユニット、２４…ガイドパイプ、２５…ガイドギブ、２６…作業装置、２７…下部振止、２８…ラック、２９…昇降用モータ、３０…出力軸、３１…出力軸駆動用モータ、３２，３３…油圧ポンプ、３２ａ，３３ａ…モータ、３４…切換弁、３５，３６，３７…油圧ポンプ、３８…エンジン、３９，４０，４１…コントロール弁、４２…作動油タンク、４３…発電機、５１，５３…手動切換弁、５２，５４…逆止弁 DESCRIPTION OF SYMBOLS 11 ... Pile driver, 12 ... Lower traveling body, 13 ... Upper turning body, 14 ... Base machine, 15 ... Leader support, 16 ... Upper leader, 17 ... Lower leader, 18 ... Leader hoisting cylinder, 19 ... Hose support column, DESCRIPTION OF SYMBOLS 20 ... Hose support column raising / lowering cylinder, 21 ... Jack, 22 ... Counterweight, 23 ... Emergency escape unit, 24 ... Guide pipe, 25 ... Guide give, 26 ... Working device, 27 ... Lower swing, 28 ... Rack, 29 ... Lifting motor, 30 ... output shaft, 31 ... output shaft driving motor, 32, 33 ... hydraulic pump, 32a, 33a ... motor, 34 ... switching valve, 35, 36, 37 ... hydraulic pump, 38 ... engine, 39, 40, 41 ... control valve, 42 ... hydraulic oil tank, 43 ... generator, 51, 53 ... manual switching valve, 52, 54 ... check valve

Claims (4)

エンジンにより駆動される作業用の油圧ポンプから、作業用の油圧回路を介して供給される作動油により作動する走行装置及び作業用油圧装置を備えた建設機械において、該建設機械に、前記エンジン又は前記作業用の油圧ポンプに異常が発生した際に、前記作業用の油圧回路に接続して、前記走行装置及び前記作業用油圧装置を作動させるための緊急脱出用の油圧回路と、該緊急脱出用の油圧回路に作動油を供給する緊急脱出用の油圧ポンプと、該緊急脱出用の油圧ポンプを駆動するモータとを備えた緊急脱出用ユニットを設けたことを特徴とする建設機械。   In a construction machine provided with a traveling device and a working hydraulic device operated by hydraulic fluid supplied from a working hydraulic pump driven by an engine via a working hydraulic circuit, the construction machine includes the engine or An emergency escape hydraulic circuit for operating the travel device and the work hydraulic device connected to the work hydraulic circuit when an abnormality occurs in the work hydraulic pump, and the emergency escape A construction machine comprising an emergency escape unit that includes a hydraulic pump for emergency escape that supplies hydraulic oil to a hydraulic circuit for use and a motor that drives the hydraulic pump for emergency escape. 前記緊急脱出用の油圧ポンプは、前記緊急脱出用の油圧回路と、外部油圧機器の油圧回路とに切り換えて作動油を供給可能であることを特徴とする請求項１記載の建設機械。   2. The construction machine according to claim 1, wherein the emergency escape hydraulic pump is capable of supplying hydraulic oil by switching between the emergency escape hydraulic circuit and an external hydraulic equipment hydraulic circuit. 前記モータの電源が可搬式エンジン発電機であることを特徴とする請求項１又は２記載の建設機械。   The construction machine according to claim 1 or 2, wherein a power source of the motor is a portable engine generator. 前記緊急脱出用の油圧回路は、作動油の供給先を前記走行装置と前記作業用油圧装置とに切換可能な切換弁を備えていることを特徴とする請求項１乃至３のいずれか１に項記載の建設機械。   4. The emergency escape hydraulic circuit includes a switching valve capable of switching a supply destination of hydraulic oil between the traveling device and the working hydraulic device. The construction machine described in the item.
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JP2017172658A (en) * 2016-03-23 2017-09-28 日本車輌製造株式会社 Hydraulic work machine
JP2021017956A (en) * 2019-07-23 2021-02-15 大成建設株式会社 Emergency escape device of hydraulic construction machine

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JPS5141093U (en) * 1974-09-24 1976-03-26
JPH118945A (en) * 1997-04-23 1999-01-12 Suzuki Shoji:Kk Construction machine fitted with power source
JP2013032814A (en) * 2011-08-02 2013-02-14 Kubota Corp Unload device of working machine
JP2013234474A (en) * 2012-05-08 2013-11-21 Hitachi Constr Mach Co Ltd Electric construction machine

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JPS5141093U (en) * 1974-09-24 1976-03-26
JPH118945A (en) * 1997-04-23 1999-01-12 Suzuki Shoji:Kk Construction machine fitted with power source
JP2013032814A (en) * 2011-08-02 2013-02-14 Kubota Corp Unload device of working machine
JP2013234474A (en) * 2012-05-08 2013-11-21 Hitachi Constr Mach Co Ltd Electric construction machine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017172658A (en) * 2016-03-23 2017-09-28 日本車輌製造株式会社 Hydraulic work machine
JP2021017956A (en) * 2019-07-23 2021-02-15 大成建設株式会社 Emergency escape device of hydraulic construction machine
JP7308683B2 (en) 2019-07-23 2023-07-14 大成建設株式会社 Emergency escape device for hydraulic construction equipment

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