CN108915007B - Excavator swing arm bucket rod economizer system - Google Patents

Excavator swing arm bucket rod economizer system Download PDF

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Publication number
CN108915007B
CN108915007B CN201810744741.9A CN201810744741A CN108915007B CN 108915007 B CN108915007 B CN 108915007B CN 201810744741 A CN201810744741 A CN 201810744741A CN 108915007 B CN108915007 B CN 108915007B
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valve
oil
reversing
auxiliary
movable arm
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CN201810744741.9A
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CN108915007A (en
Inventor
施享
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Maanshan Dajun Technology Development Co.,Ltd.
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Anhui Bobit Information Technology Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/425—Drive systems for dipper-arms, backhoes or the like
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives

Abstract

The invention discloses an energy-saving system for a movable arm and a bucket rod of an excavator, which comprises an oil tank, a main variable pump, a first motor, a first overflow valve, a main reversing valve, a first check valve, a second check valve, a movable arm oil cylinder, a third check valve, a first electromagnetic valve, a second electromagnetic valve, a first pressure sensor, a second pressure sensor, a first energy accumulator, a second energy accumulator, a first throttling valve, a second throttling valve, a fourth check valve, a fifth check valve, a sixth check valve, a seventh check valve, a reversing valve, a first throttling valve, a variable motor, an auxiliary variable pump, a second motor, a second overflow valve, an auxiliary reversing valve, a second throttling valve, a third throttling valve, a cooler, a bucket rod oil cylinder and a controller. The hydraulic energy in the movable arm is fully recovered, energy is saved, and meanwhile, the throttle valve is added, so that the ascending and descending stability of the movable arm and the bucket rod can be enhanced.

Description

Excavator swing arm bucket rod economizer system
Technical Field
The invention belongs to the field of excavators, and particularly relates to an energy-saving system for a movable arm and a bucket rod of an excavator.
Background
At present, the recovery research on the hydraulic energy of the movable arm and the bucket rod is less, the recovery mode is less, the utilization rate is low, the bucket rod is not suitable for being used generally, and the speed of the bucket rod is difficult to control when the bucket rod is reused after the energy is recovered, so that the waste of oil is caused.
Disclosure of Invention
In order to solve the problems, the invention provides an energy-saving system for a movable arm and a bucket rod of an excavator.
The invention is realized by adopting the following technical scheme,
an energy-saving system for a movable arm and a bucket rod of an excavator comprises an oil tank, a main variable pump, a first motor, a first overflow valve, a main reversing valve, a first one-way valve, a second one-way valve, a movable arm oil cylinder, a third one-way valve, a first electromagnetic valve, a second electromagnetic valve, a first pressure sensor, a second pressure sensor, a first energy accumulator, a second energy accumulator, a first shutoff valve, a second shutoff valve, a fourth one-way valve, a fifth one-way valve, a sixth one-way valve, a seventh one-way valve, a reversing valve, a first throttle valve, a variable motor, an auxiliary variable pump, a second motor, a second overflow valve, an auxiliary reversing valve, a second throttle valve, a third throttle valve, a cooler, a bucket rod oil cylinder and a controller, wherein the main variable pump is driven by the first motor, one end of the main variable pump is connected with the oil tank, the other end of the main variable pump is connected with A1 of the main reversing valve, a P1 oil port of the main variable pump is connected, the oil port K1 of the main reversing valve is connected with a rodless cavity of a movable arm oil cylinder through a second reversing valve, a rod cavity and a rodless cavity of the movable arm oil cylinder are simultaneously connected with oil ports at one ends of a first electromagnetic valve and a second electromagnetic valve through a third one-way valve, an oil port at the other end of the first electromagnetic valve is connected with a first energy accumulator, a first cut-off valve and a fourth one-way valve are sequentially arranged on an oil way from the first energy accumulator to the rod cavity of the movable arm oil cylinder, an oil port at the other end of the second electromagnetic valve is connected with a second energy accumulator, a second cut-off valve and a fifth one-way valve are sequentially arranged on an oil way from the second energy accumulator to the rodless cavity of the movable arm oil cylinder, the rod cavity of the movable arm oil cylinder is connected with a P2 oil port of the reversing valve through a sixth one-way valve, the rodless cavity of the movable arm oil cylinder is connected with a K2 of the reversing valve through a seventh one-way valve, the second motor is also used for driving the auxiliary variable pump to rotate, the auxiliary variable pump pumps oil from the oil tank to the A3 oil port of the auxiliary reversing valve, the P3 oil port of the auxiliary reversing valve is connected with a second throttle valve, a cooler is arranged on an oil path from the second throttle valve to a rodless cavity of the bucket rod oil cylinder, the K3 oil port of the auxiliary reversing valve is connected with a third throttle valve, the third throttle valve is connected with a rod cavity of the bucket rod oil cylinder, the B3 oil port of the auxiliary reversing valve is connected with the oil tank, a first working oil port of a second overflow valve is arranged between the A3 oil port of the auxiliary variable pump and the auxiliary reversing valve, and the second working oil port of the second overflow valve is connected with the oil tank.
Further, the controller is used for controlling the reversing of the main reversing valve, the reversing valve and the auxiliary reversing valve, and the controller is used for controlling the on-off of the first electromagnetic valve and the second electromagnetic valve.
Further, the controller is used for receiving the measurement data of the first pressure sensor and the second pressure sensor, so as to control the on-off of the first electromagnetic valve and the second electromagnetic valve and control the on-off of the first shutoff valve and the second shutoff valve.
The invention has the beneficial effects that: the hydraulic energy of the movable arm is fully recovered, energy is saved, and meanwhile, the throttle valve is added, so that the ascending and descending stability of the movable arm and the bucket rod can be enhanced.
Drawings
FIG. 1 is a schematic diagram of a hydraulic system of the present invention;
in the figure, an oil tank 1, a primary variable pump 2, a first motor 3, a first overflow valve 4, a primary directional control valve 5, a first check valve 6, a second check valve 7, a boom cylinder 8, a third check valve 9, a first electromagnetic valve 10, a second electromagnetic valve 11, a first pressure sensor 12, a second pressure sensor 13, a first accumulator 14, a second accumulator 15, a first cutoff valve 16, a second cutoff valve 17, a fourth check valve 18, a fifth check valve 19, a sixth check valve 20, a seventh check valve 21, a directional control valve 22, a first throttle valve 23, a variable motor 24, a secondary variable pump 25, a second motor 26, a second overflow valve 27, a secondary directional control valve 28, a second throttle valve 29, a third throttle valve 30, a cooler 31 and an arm cylinder 32 are shown.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, the present invention provides an energy saving system for a boom and an arm of an excavator, the system including a tank 1, a main variable pump 2, a first electric motor 3, a first overflow valve 4, a main directional control valve 5, a first check valve 6, a second check valve 7, a boom cylinder 8, a third check valve 9, a first electromagnetic valve 10, a second electromagnetic valve 11, a first pressure sensor 12, a second pressure sensor 13, a first accumulator 14, a second accumulator 15, a first shut-off valve 16, a second shut-off valve 17, a fourth check valve 18, a fifth check valve 19, a sixth check valve 20, a seventh check valve 21, a directional control valve 22, a first throttle valve 23, a variable motor 24, a secondary variable pump 25, a second electric motor 26, a second overflow valve 27, a secondary directional control valve 28, a second throttle valve 29, a third throttle valve 30, a cooler 31, an arm cylinder 32, and a controller, the main variable pump 2 being driven by the first electric motor 3, one end of the main reversing valve is connected with an oil tank 1, the other end of the main reversing valve is connected with an A1 oil port of a main reversing valve 5, a P1 oil port of the main reversing valve 5 is connected with a rod cavity of a movable arm oil cylinder 8 through a first check valve 6, a K1 oil port of the main reversing valve 5 is connected with a rodless cavity of the movable arm oil cylinder 8 through a second reversing valve 7, the rod cavity and the rodless cavity of the movable arm oil cylinder 8 are simultaneously connected with one end oil ports of a first electromagnetic valve 10 and a second electromagnetic valve 11 through a third check valve 9,
an oil port at the other end of the first electromagnetic valve 10 is connected with a first energy accumulator 14, an oil path from the first energy accumulator to a rod cavity of the movable arm oil cylinder 8 is sequentially provided with a first cut-off valve 16 and a fourth one-way valve 18,
an oil port at the other end of the second electromagnetic valve 11 is connected with a second energy accumulator 15, an oil path from the second energy accumulator to a rodless cavity of the movable arm oil cylinder 8 is sequentially provided with a second shutoff valve 17 and a fifth one-way valve 19,
the rod chamber of the boom cylinder 8 is connected to the P2 port of the directional control valve 22 through the sixth check valve 20, the rodless chamber of the boom cylinder 8 is connected to the K2 port of the directional control valve 22 through the seventh check valve 21,
an A2 oil port of the reversing valve 22 is connected with a first throttling valve 23, oil is conveyed into a variable motor 24 through the first throttling valve 23 and is used for driving the auxiliary variable pump 25 to rotate, a second motor 26 is also used for driving the auxiliary variable pump 25 to rotate, the auxiliary variable pump 25 pumps the oil from an oil tank to an A3 oil port of an auxiliary reversing valve 28, an auxiliary reversing valve P3 oil port is connected with a second throttling valve 29, a cooler 31 is arranged on an oil path from the second throttling valve 29 to a rodless cavity of the arm cylinder 32, an auxiliary reversing valve K3 oil port is connected with a third throttling valve 30, the third throttling valve 30 is connected with a rod cavity of the arm cylinder 32, an auxiliary reversing valve B3 oil port is connected with the oil tank, a first working oil port of a second overflow valve 27 is arranged between the auxiliary variable pump 25 and the auxiliary reversing valve 28A3 oil port, and a second working oil port of the second overflow valve 27 is connected with the oil tank.
Further, the controller is used for controlling the reversing of the main reversing valve 5, the reversing valve 22 and the auxiliary reversing valve 28, and the controller is used for controlling the on-off of the first electromagnetic valve 10 and the second electromagnetic valve 11.
Further, the controller is used for receiving measurement data of the first pressure sensor 12 and the second pressure sensor 13, so as to control the on-off of the first electromagnetic valve 10 and the second electromagnetic valve 11, and control the on-off of the first shutoff valve 16 and the second shutoff valve 17.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (3)

1. The utility model provides an excavator swing arm dipper economizer system which characterized in that: the system comprises an oil tank (1), a primary variable pump (2), a first motor (3), a first overflow valve (4), a primary reversing valve (5), a first one-way valve (6), a second one-way valve (7), a movable arm oil cylinder (8), a third one-way valve (9), a first electromagnetic valve (10), a second electromagnetic valve (11), a first pressure sensor (12), a second pressure sensor (13), a first energy accumulator (14), a second energy accumulator (15), a first shutoff valve (16), a second shutoff valve (17), a fourth one-way valve (18), a fifth one-way valve (19), a sixth one-way valve (20), a seventh one-way valve (21), a reversing valve (22), a first throttle valve (23), a variable motor (24), an auxiliary variable pump (25), a second motor (26), a second overflow valve (27), an auxiliary reversing valve (28), a second throttle valve (29), a third throttle valve (30), The hydraulic control system comprises a cooler (31), an arm cylinder (32) and a controller, wherein a main variable pump (2) is driven by a first motor (3), one end of the main variable pump is connected with an oil tank (1), the other end of the main variable pump is connected with an A1 oil port of a main reversing valve (5), a P1 oil port of the main reversing valve (5) is connected with a rod cavity of a movable arm cylinder (8) through a first one-way valve (6), a K1 oil port of the main reversing valve (5) is connected with a rodless cavity of the movable arm cylinder (8) through a second reversing valve (7), the rod cavity and the rodless cavity of the movable arm cylinder (8) are simultaneously connected with one ends of a first electromagnetic valve (10) and a second electromagnetic valve (11) through a third one-way valve (9),
an oil port at the other end of the first electromagnetic valve (10) is connected with a first energy accumulator (14), a first cut-off valve (16) and a fourth one-way valve (18) are sequentially arranged on an oil path from the first energy accumulator to a rod cavity of the movable arm oil cylinder (8),
an oil port at the other end of the second electromagnetic valve (11) is connected with a second energy accumulator (15), an oil path from the second energy accumulator to a rodless cavity of the movable arm oil cylinder (8) is sequentially provided with a second shutoff valve (17) and a fifth one-way valve (19),
a rod cavity of the movable arm oil cylinder (8) is connected with a P2 oil port of the reversing valve (22) through a sixth one-way valve (20), a rodless cavity of the movable arm oil cylinder (8) is connected with a K2 oil port of the reversing valve (22) through a seventh one-way valve (21),
an A2 oil port of the reversing valve (22) is connected with a first throttling valve (23), oil is conveyed into a variable motor (24) through the first throttling valve (23) and is used for driving an auxiliary variable pump (25) to rotate, a second motor (26) is also used for driving the auxiliary variable pump (25) to rotate, the auxiliary variable pump (25) pumps the oil from an oil tank to an A3 oil port of the auxiliary reversing valve (28), an auxiliary reversing valve P3 oil port is connected with a second throttling valve (29), a cooler (31) is arranged on an oil path from the second throttling valve (29) to a rodless cavity of the bucket rod oil cylinder (32), an auxiliary reversing valve K3 oil port is connected with a third throttling valve (30), the third throttling valve (30) is connected with a rod cavity of the bucket rod oil cylinder (32), the auxiliary reversing valve B3 is connected with the oil tank, a first working oil port of a second overflow valve (27) is arranged between the auxiliary variable pump (25) and an A3 oil port of the auxiliary reversing valve (28), and a second working oil port of the second overflow valve (27) is connected with an oil tank.
2. The energy saving system for the boom and the arm of the excavator as claimed in claim 1, wherein: the controller is used for controlling the reversing of the main reversing valve (5), the reversing valve (22) and the auxiliary reversing valve (28), and is used for controlling the on-off of the first electromagnetic valve (10) and the second electromagnetic valve (11).
3. The energy saving system for the boom and the arm of the excavator as claimed in claim 2, wherein: the controller is used for receiving measurement data of the first pressure sensor (12) and the second pressure sensor (13), so that the on-off of the first electromagnetic valve (10) and the second electromagnetic valve (11) and the on-off of the first shutoff valve (16) and the second shutoff valve (17) are controlled.
CN201810744741.9A 2018-07-09 2018-07-09 Excavator swing arm bucket rod economizer system Active CN108915007B (en)

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CN201810744741.9A CN108915007B (en) 2018-07-09 2018-07-09 Excavator swing arm bucket rod economizer system

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Application Number Priority Date Filing Date Title
CN201810744741.9A CN108915007B (en) 2018-07-09 2018-07-09 Excavator swing arm bucket rod economizer system

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CN108915007B true CN108915007B (en) 2020-10-30

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Publication number Priority date Publication date Assignee Title
CN111576537A (en) * 2020-05-29 2020-08-25 徐州徐工挖掘机械有限公司 Hydraulic lifting system of excavator cab and excavator

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Publication number Priority date Publication date Assignee Title
CN103924629A (en) * 2014-04-15 2014-07-16 中国人民解放军63983部队 Hydraulic excavator driving system with potential energy recovery function

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JP2010060055A (en) * 2008-09-04 2010-03-18 Caterpillar Japan Ltd Hydraulic control system in working machine
CN102912821B (en) * 2012-04-27 2014-12-17 华侨大学 Hydraulic excavating energy saving system
JP6112559B2 (en) * 2013-11-06 2017-04-12 キャタピラー エス エー アール エル Fluid pressure circuit and work machine
CN104831775B (en) * 2015-05-14 2017-07-28 上海理工大学 A kind of excavator hydraulic system of the use active pressure-adjusting type pressure common rail with engine start and stop function
RU2624079C1 (en) * 2016-05-19 2017-06-30 Федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский государственный архитектурно-строительный университет" Electronic-hydraulic control system with the bulldozer drawing

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103924629A (en) * 2014-04-15 2014-07-16 中国人民解放军63983部队 Hydraulic excavator driving system with potential energy recovery function

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