CN111648434B - Excavator rotation brake release method controlled by hydraulic and electric combination - Google Patents
Excavator rotation brake release method controlled by hydraulic and electric combination Download PDFInfo
- Publication number
- CN111648434B CN111648434B CN202010471722.0A CN202010471722A CN111648434B CN 111648434 B CN111648434 B CN 111648434B CN 202010471722 A CN202010471722 A CN 202010471722A CN 111648434 B CN111648434 B CN 111648434B
- Authority
- CN
- China
- Prior art keywords
- electromagnetic valve
- hydraulic
- net
- pilot
- shuttle valve
- 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.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses a hydraulic-electric combined control excavator rotation brake release method, which adopts a scheme of combined control of an electromagnetic valve and a hydraulic control pilot shuttle valve net, and comprises the steps that (1) the electromagnetic valve is controlled by a vehicle control unit, and the electromagnetic valve directly controls rotation brake release; (2) the secondary pressure outlet is connected with a rotary brake releasing port SH, and when any getting-on action is performed, the electromagnetic valve is electrified to release the rotary brake; (3) the hydraulic control pilot shuttle valve net is used as an emergency scheme when the electric control fails, the highest pilot pressure of the bucket rod and the rotation is taken out through the shuttle valve net, and then the shuttle valve net is connected with the electromagnetic valve through secondary pressure, so that an emergency signal can be provided when the electric control fails, and the rotation can normally act.
Description
Technical Field
The invention relates to the field of excavators, in particular to a method for releasing slewing brake of an excavator controlled by a hydraulic-electric combination.
Background
The structure of a rotary motor used by an excavator is provided with a mechanical brake, in order to prevent the abnormal abrasion of impact generated during the boarding action of the excavator on the brake of the rotary motor, the rotary brake is required to be released when the boarding action including the rotation is detected, failures such as abnormal sound of the rotary motor and the like can be caused because the swing brake is not released illegally or can not be completely released, and the traditional rotary brake release has two modes, namely a PX signal oil path for the boarding movable arm, a dipper handle, the rotation and the bucket action is arranged in a main valve, any one of the four actions is detected, the pressure is built in the PX oil path and is fed back to the rotary motor, so that a signal oil path in the main valve is required to be added, the structure of the main valve is complex, and the cost is greatly increased; the other type is an external shuttle valve group, the pilot pressure of the upper vehicle is taken out, so that if pilot pressure signals of four actions are taken out, at least 7 shuttle valves are needed, the structure of the shuttle valve group is complex, and the cost is increased.
Therefore, the rotary braking contact method which is simple in structure, low in failure rate, hydraulic and electric double-insurance and capable of ensuring normal rotation work is designed, and the problem to be solved by the inventor is solved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a method for relieving the slewing brake of an excavator under the hydraulic-electric combined control, which can realize the functions of simple structure, low failure rate, hydraulic-electric double insurance and ensuring the normal operation of slewing.
The technical scheme adopted by the invention for solving the technical problems is as follows: a hydraulic-electric combined control excavator rotation brake release method adopts a scheme of combined control of an electromagnetic valve and a hydraulic control pilot shuttle valve net, and the scheme comprises the following steps:
(1) the electromagnetic valve is controlled by the vehicle control unit, and the electromagnetic valve directly controls the rotary braking to be released;
(2) the secondary pressure outlet is connected with a rotary brake releasing port SH, and when any getting-on action is performed, the electromagnetic valve is electrified to release the rotary brake;
(3) the hydraulic control pilot shuttle valve net is used as an emergency scheme when the electric control fails, the highest pilot pressure of the bucket rod and the rotation is taken out through the shuttle valve net, and then the shuttle valve net is connected with the electromagnetic valve through secondary pressure, so that an emergency signal can be provided when the electric control fails, and the rotation normally acts.
Furthermore, the main functional elements used in the scheme are an electromagnetic valve, a shuttle valve net and a vehicle control unit, and the vehicle control unit further comprises a rotary motor, a pilot handle and a pilot pump which are used in a matched mode.
The invention has the beneficial effects that:
1. according to the invention, by adopting the scheme of combined control of the solenoid valve and the liquid feeding control pilot shuttle valve net, the solenoid valve and the liquid feeding control pilot shuttle valve net are combined and play a role of safety, the slewing brake can be normally relieved under the emergency condition, and the functions of simple structure, low failure rate, hydraulic and electric double safety and the guarantee of normal operation of slewing are realized.
Drawings
Fig. 1 is a schematic diagram of the circuit of the present invention.
Description of reference numerals: 1-a rotary motor; 2-a shuttle valve; 3-shuttle valve net; 4-a pilot handle; 5-an electromagnetic valve; 6-vehicle control unit; 7-pilot pump.
Detailed Description
The invention will now be further illustrated by reference to specific examples, which are intended to be illustrative only and not to limit the scope of the invention. Further, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents may fall within the scope of the invention as defined in the appended claims.
Referring to fig. 1, the invention is a circuit schematic diagram, a hydraulic-electric combined control excavator rotation brake release method, which adopts a scheme of combined control of an electromagnetic valve 5 and a hydraulic control pilot shuttle valve net 3, and the scheme comprises the following steps:
(1) the electromagnetic valve 5 is controlled by the vehicle control unit 6, and the electromagnetic valve 5 directly controls the rotary braking to be released;
(2) the secondary pressure outlet is connected with a rotary brake releasing port SH, and when any getting-on action is performed, the electromagnetic valve 5 is electrified to release the rotary brake;
(3) the hydraulic control pilot shuttle valve net 3 is used as an emergency scheme when the electric control fails, the highest pilot pressure of the bucket rod and the rotation is taken out through the shuttle valve net 3, and then the shuttle valve net 3 is in secondary pressure connection with the electromagnetic valve 5, so that an emergency signal can be provided when the electric control fails, and the rotation normally acts.
The main functional elements used in the scheme are an electromagnetic valve 5, a shuttle valve net 3 and a vehicle control unit 6, and further comprise a rotary motor 1, a pilot handle 4 and a pilot pump 7 which are used in a matched mode.
One of the common methods for releasing the braking is that a PX signal oil path for the movement of a boom, an arm, a swing and a bucket of the upper vehicle is arranged in a main valve, and when any one of the four movements is detected, the PX signal oil path establishes pressure and feeds back the pressure to the swing motor 1;
another method for releasing the brake is to use an external shuttle valve net 3, and the pilot pressure of the getting-on action needs to be taken out, so if pilot pressure signals of four actions of a movable arm, an arm, a swing and a bucket are taken out, at least seven shuttle valves 2 are needed to form the shuttle valve net 3.
Compared with the two common methods, the scheme adopted by the invention simultaneously comprises a hydraulic and circuit double-release mechanism, the number of oil passages adopted in the hydraulic aspect is much less than that of the method, so that the main valve is simplified in structure and the cost is saved, meanwhile, the shuttle valve net 3 is composed of four shuttle valves 2 in total, the number and the cost are much better than those of the method, the structure is simple and clear, the braking release effect is grouped, the double-release mechanism can ensure that the rotary braking can be normally released under any condition, and the problem that the rotary braking cannot be released due to the breakdown of the single-release mechanism caused by sudden conditions is avoided.
According to the invention, by adopting the scheme of combined control of the electromagnetic valve 5 and the liquid feeding control pilot shuttle valve net 3, the two are combined and play a role of safety, the slewing brake can be normally released under the emergency condition, and the functions of simple structure, low failure rate, hydraulic and electric double safety and normal operation of slewing are realized.
Claims (2)
1. A hydraulic-electric combined control excavator rotation brake release method adopts a scheme of combined control of an electromagnetic valve and a hydraulic control pilot shuttle valve net, and the scheme comprises the following steps:
(1) the electromagnetic valve is controlled by the vehicle control unit, and the electromagnetic valve directly controls the rotary braking to be released;
(2) the secondary pressure outlet is connected with a rotary brake releasing port SH, and when any getting-on action is performed, the electromagnetic valve is electrified to release the rotary brake;
(3) the hydraulic control pilot shuttle valve net is used as an emergency scheme when the electric control fails, the highest pilot pressure of the bucket rod and the rotation is taken out through the shuttle valve net, and then the shuttle valve net is connected with the electromagnetic valve through secondary pressure, so that an emergency signal can be provided when the electric control fails, and the rotation normally acts.
2. The method for releasing the swing brake of the excavator controlled by the hydraulic-electric combination as claimed in claim 1, wherein: the main functional elements used in the scheme are an electromagnetic valve, a shuttle valve net and a vehicle control unit, and further comprise a rotary motor, a pilot handle and a pilot pump which are used in a matched mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010471722.0A CN111648434B (en) | 2020-05-29 | 2020-05-29 | Excavator rotation brake release method controlled by hydraulic and electric combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010471722.0A CN111648434B (en) | 2020-05-29 | 2020-05-29 | Excavator rotation brake release method controlled by hydraulic and electric combination |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111648434A CN111648434A (en) | 2020-09-11 |
| CN111648434B true CN111648434B (en) | 2022-04-15 |
Family
ID=72349680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010471722.0A Active CN111648434B (en) | 2020-05-29 | 2020-05-29 | Excavator rotation brake release method controlled by hydraulic and electric combination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111648434B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116220140A (en) * | 2022-12-09 | 2023-06-06 | 太重集团(上海)装备技术有限公司 | Brake control system and control method for closed slewing mechanism of excavator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5599767B2 (en) * | 2011-09-30 | 2014-10-01 | 住友重機械工業株式会社 | Swivel control device and excavator |
| KR101464518B1 (en) * | 2012-11-29 | 2014-11-24 | 한국기계연구원 | Release device of a Parking Brake for the Track Motor of an Excavator |
| CN203270658U (en) * | 2013-05-11 | 2013-11-06 | 福田雷沃国际重工股份有限公司 | Excavator rotation brake control system |
| CN205116264U (en) * | 2015-09-29 | 2016-03-30 | 陕西奥力信工程机械有限公司 | System is relieved in excavator gyration motor's braking |
| CN111101553B (en) * | 2020-01-14 | 2022-02-15 | 徐州徐工矿业机械有限公司 | Electric control rotary brake release system of hydraulic excavator and use method |
-
2020
- 2020-05-29 CN CN202010471722.0A patent/CN111648434B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111648434A (en) | 2020-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10947699B2 (en) | Construction machine | |
| US20130098023A1 (en) | Energy recovery control circuit and work machine | |
| JP7297596B2 (en) | Hydraulic system for construction machinery | |
| US11795660B2 (en) | Hydraulic system of construction machine | |
| EP2131046B1 (en) | Safety device for hydraulic working machine | |
| CN111648434B (en) | Excavator rotation brake release method controlled by hydraulic and electric combination | |
| US11761175B2 (en) | Hydraulic system of construction machine | |
| US11697918B2 (en) | Hydraulic system of construction machine | |
| KR20120120056A (en) | Hydraulic circuit and working machine including the same | |
| US11649611B2 (en) | Hydraulic system of construction machine | |
| JP2010209637A (en) | Brake device of electric turning type working machine | |
| CN102030267B (en) | Hoist and closed hydraulic system thereof | |
| WO2015107663A1 (en) | Emergency stop system for work machine, work machine, and emergency stop method for work machine | |
| CN113062399B (en) | Excavator rotary motor, brake control release circuit and method thereof and excavator | |
| US20230183946A1 (en) | Hydraulic excavator drive system | |
| JP2007284170A (en) | Turning locking device for working machine | |
| JP2014178021A (en) | Hydraulic pressure control system of construction machine | |
| JP2014206022A (en) | Revolution braking device of construction machine | |
| JP2017115994A (en) | Work machine | |
| CN110966274B (en) | Hydraulic locking oil way, engineering machinery hydraulic system and control method thereof | |
| JP2004019806A (en) | Hydraulic circuit of working vehicle | |
| CN112723166B (en) | Hydraulic control module, hydraulic control system and engineering machinery | |
| US7712589B2 (en) | Device and method for braking the supporting booms of an earthmoving machine | |
| JP2014145225A (en) | Hybrid construction machine | |
| CN117967628A (en) | A multi-pump hydraulic interlocking control system and control method thereof and engineering machinery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |