JP2018151036A5 - - Google Patents
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- JP2018151036A5 JP2018151036A5 JP2017049154A JP2017049154A JP2018151036A5 JP 2018151036 A5 JP2018151036 A5 JP 2018151036A5 JP 2017049154 A JP2017049154 A JP 2017049154A JP 2017049154 A JP2017049154 A JP 2017049154A JP 2018151036 A5 JP2018151036 A5 JP 2018151036A5
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- JP
- Japan
- Prior art keywords
- hydraulic pumps
- prime mover
- hydraulic
- driven
- construction machine
- Prior art date
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- 238000010276 construction Methods 0.000 claims 8
- 238000011144 upstream manufacturing Methods 0.000 claims 1
Claims (4)
この下部走行体に旋回可能に搭載された上部旋回体と、
前記上部旋回体に上下方向に回動可能に取り付けられたフロント装置とを備え、かつ
第１原動機と、２つの吐出ポートをする閉回路用の複数の油圧ポンプと、複数の油圧アクチュエータと、複数の電磁切換弁とを備え、前記複数の電磁切換弁を選択的に連通位置に切り換えることで、前記複数の油圧ポンプの２つの吐出ポートが前記複数の油圧アクチュエータの少なくとも一部のものに選択的に接続され、前記複数の油圧ポンプと前記複数の油圧アクチュエータの少なくとも一部のものとの間に閉回路を形成する油圧閉回路システムを備えた建設機械において、
前記油圧閉回路システムは第２原動機を更に備え、
前記複数の油圧ポンプは少なくとも４台の油圧ポンプを含み、前記少なくとも４台の油圧ポンプは前記第１原動機によって駆動される油圧ポンプと、前記第２原動機によって駆動される油圧ポンプとを含み、
少なくとも４台の前記油圧ポンプは、前記複数の電磁切換弁が選択的に連通位置に切り換えられたときに、２つの前記吐出ポートの一方からの吐出油を前記複数の電磁切換弁の上流側においてポンプ２台ずつで合流させ、この合流した圧油が前記複数の電磁切換弁に供給される接続構造を有することを特徴とする建設機械。 A lower traveling body,
An upper revolving unit mounted on the lower traveling unit so as to be able to swivel;
A first device, a plurality of closed-circuit hydraulic pumps having two discharge ports, a plurality of hydraulic actuators, and a plurality of hydraulic actuators. The two switching ports of the plurality of hydraulic pumps are selectively used for at least some of the plurality of hydraulic actuators by selectively switching the plurality of electromagnetic switching valves to a communication position. In a construction machine including a hydraulic closed circuit system that is connected to and forms a closed circuit between the plurality of hydraulic pumps and at least some of the plurality of hydraulic actuators,
The hydraulic closed circuit system further comprises a second prime mover,
The plurality of hydraulic pumps include at least four hydraulic pumps, and the at least four hydraulic pumps include a hydraulic pump driven by the first prime mover and a hydraulic pump driven by the second prime mover,
At least four of the hydraulic pumps, when the plurality of electromagnetic switching valves are selectively switched to the communication position, discharge oil from one of the two discharge ports on the upstream side of the plurality of electromagnetic switching valves. A construction machine characterized by having a connection structure in which two pumps are joined together and the joined pressure oil is supplied to the plurality of electromagnetic switching valves.
４台の前記油圧ポンプは、前記第１原動機によって駆動される２台の油圧ポンプと、前記第２原動機によって駆動される２台の油圧ポンプとを有し、
前記第１原動機によって駆動される２台の油圧ポンプと前記第２原動機によって駆動される２台の油圧ポンプに１台ずつ含まれる２台の油圧ポンプで吐出油を合流させたことを特徴とする建設機械。 The construction machine according to claim 1,
The four hydraulic pumps have two hydraulic pumps driven by the first prime mover and two hydraulic pumps driven by the second prime mover,
Discharged oil is merged by two hydraulic pumps, one included in each of two hydraulic pumps driven by the first prime mover and two hydraulic pumps driven by the second prime mover. Construction machinery.
４台の前記油圧ポンプは、前記第１原動機によって駆動される２台の油圧ポンプと、前記第２原動機によって駆動される２台の油圧ポンプとを有し、
前記第１原動機によって駆動される２台の油圧ポンプで吐出油を合流させ、かつ前記第２原動機によって駆動される２台の油圧ポンプで吐出油を合流させたことを特徴とする建設機械。 The construction machine according to claim 1,
The four hydraulic pumps have two hydraulic pumps driven by the first prime mover and two hydraulic pumps driven by the second prime mover,
A construction machine characterized in that the discharge oil is merged by two hydraulic pumps driven by the first prime mover and the discharge oil is merged by two hydraulic pumps driven by the second prime mover.
前記上部旋回体は、基礎下部構造としての旋回フレームを備え、
前記旋回フレームは、センターフレームと、このセンターフレームの左側に締結された左フレームと、前記センターフレームの右側に締結された右フレームとを有し、
前記第１原動機は、前記左フレーム上に設けられた第１機械室に配置され、
前記第２原動機は、前記右フレーム上に設けられた第２機械室に配置され、
４台の前記油圧ポンプは、前記第１機械室に配置され前記第１原動機によって駆動される２台の油圧ポンプと、前記第２機械室に配置され前記第２原動機によって駆動される２台の油圧ポンプとを有し、
前記複数の電磁切換弁は、前記センターフレーム上でかつ前記第１及び第２機械室の間に配置されたことを特徴とする建設機械。 The construction machine according to claim 1,
The upper swing body includes a swing frame as a foundation lower structure,
The swivel frame has a center frame, a left frame fastened to the left side of the center frame, and a right frame fastened to the right side of the center frame,
The first prime mover is disposed in a first machine room provided on the left frame,
The second prime mover is disposed in a second machine room provided on the right frame,
The four hydraulic pumps are arranged in the first machine room and driven by the first prime mover, and two hydraulic pumps are arranged in the second machine room and driven by the second prime mover. A hydraulic pump,
The construction machine, wherein the plurality of electromagnetic switching valves are arranged on the center frame and between the first and second machine rooms.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017049154A JP6782183B2 (en) | 2017-03-14 | 2017-03-14 | Construction machinery |
| PCT/JP2018/001069 WO2018168179A1 (en) | 2017-03-14 | 2018-01-16 | Construction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017049154A JP6782183B2 (en) | 2017-03-14 | 2017-03-14 | Construction machinery |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2018151036A JP2018151036A (en) | 2018-09-27 |
| JP2018151036A5 true JP2018151036A5 (en) | 2019-02-07 |
| JP6782183B2 JP6782183B2 (en) | 2020-11-11 |
Family
ID=63522021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017049154A Active JP6782183B2 (en) | 2017-03-14 | 2017-03-14 | Construction machinery |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6782183B2 (en) |
| WO (1) | WO2018168179A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220402627A1 (en) * | 2021-06-18 | 2022-12-22 | Bell Textron Inc. | Thermal hydraulic active warming system |
| WO2023190381A1 (en) * | 2022-03-29 | 2023-10-05 | 日立建機株式会社 | Construction machine |
| WO2023189867A1 (en) * | 2022-03-30 | 2023-10-05 | 日立建機株式会社 | Construction machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51101682A (en) * | 1975-03-03 | 1976-09-08 | Hitachi Construction Machinery | YUATSUSHOBERUNOYUATSUKAIRO |
| JP3178392B2 (en) * | 1997-10-23 | 2001-06-18 | 日立建機株式会社 | Revolving superstructure of construction equipment |
| JP5480345B2 (en) * | 2012-08-29 | 2014-04-23 | 良三 松本 | Transport work vehicle with multiple engines |
-
2017
- 2017-03-14 JP JP2017049154A patent/JP6782183B2/en active Active
-
2018
- 2018-01-16 WO PCT/JP2018/001069 patent/WO2018168179A1/en active Application Filing
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