CN109183891A - Excavator revolution solution lock control oil circuit and excavator - Google Patents
Excavator revolution solution lock control oil circuit and excavator Download PDFInfo
- Publication number
- CN109183891A CN109183891A CN201811060450.4A CN201811060450A CN109183891A CN 109183891 A CN109183891 A CN 109183891A CN 201811060450 A CN201811060450 A CN 201811060450A CN 109183891 A CN109183891 A CN 109183891A
- Authority
- CN
- China
- Prior art keywords
- valve
- unlock
- oil circuit
- bus
- excavator
- 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.)
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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
- E02F9/22—Hydraulic or pneumatic drives
-
- 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 present invention relates to excavator hydraulic oil roads, to solve the problems, such as that existing excavator revolution solution lock control oil circuit rotary motor when long-time only has walking motion will appear abnormal unlock, a kind of excavator revolution solution lock control oil circuit is provided, the each one-way valve inlet for unidirectional valve group of getting on the bus and each pilot signal oil circuit for action control main valve of getting on the bus connect one to one, and the outlet of each check valve is connect with the unlock control terminal of the first entrance of shuttle valve and rotary motor unlock slide valve module simultaneously after being interconnected；The each one-way valve inlet for unidirectional valve group of walking and each pilot signal oil circuit of travelling control main valve connect one to one, the outlet of each check valve is connect after being interconnected with the second entrance of shuttle valve, is provided with and the loop-coupled throttle valve of fuel tank on the oil circuit between the unlock control terminal of rotary motor unlock slide valve module and the one-way valved outlet for unidirectional valve group of getting on the bus.The avoidable unlock control terminal of the present invention is improper to be established pressure and rotary motor unlock slide valve module is caused to unlock extremely.
Description
Technical field
The present invention relates to a kind of excavator hydraulic oil roads, turn round solution lock control oil more specifically to a kind of excavator
Road and excavator.
Background technique
Load-sensitive hydraulic system is applied on mini-excavator than wide and mature one of hydraulic system, but with
Exploitation and application of the domestic hydraulic part producer to this system, domestic load sensitive system hydraulic part is in 10t to 20t medium-sized excavator
On also obtained corresponding use.It is hydraulic since mini-excavator and medium-sized excavator adapt to the difference of market groups and operating condition
The unlocking control signal of rotary motor also corresponds to different acquisition requirements.Medium-sized excavator hydraulic rotary motor has movement in handle
It needs to unlock to rotary motor when output, but in the movement of only running motor, rotary motor should be at blocking, that is, return
Turn motor unlocking signal oil circuit and needs pressure release.
Existing excavator revolution solution lock control oil circuit is as shown in Figure 1 comprising rotary motor unlock slide valve module 2 is got on the bus
Unidirectional valve group 5, the unidirectional valve group 6 of walking, shuttle valve 8, unidirectional valve group 5 of getting on the bus is made of several check valves and each check valve enters
Each pilot signal oil circuit 4 of mouth and action control main valve of getting on the bus connects one to one, each check valve of unidirectional valve group 5 of getting on the bus
Unlocking signal delivery outlet PB after outlet is interconnected is slided with the unlock of the first entrance and rotary motor of shuttle valve 8 simultaneously by pipeline
The unlock control terminal SH connection of valve module, unidirectional valve group 6 of walking be made of several check valves and the entrance of each check valve with
Each pilot signal oil circuit of travelling control main valve connects one to one, and the outlet of each check valve for unidirectional valve group 6 of walking is mutual
It is connect after connection with the second entrance of shuttle valve 8, the outlet of shuttle valve is connect with idling ring off signal delivery outlet PA.
When get on the bus do not act generation when, upper driver's pilot pressure signal virtual value is zero, the unlock for unidirectional valve group 5 of getting on the bus
The pressure of signal output PB and the unlock control terminal SH of rotary motor unlock slide valve module are also zero, and rotary motor unlocks slide valve
Unlock slide valve 21 in module 2 works in bottom, and rotary motor 1 is in revolution self-locking state.When getting on the bus, there is movement to occur,
Maximum pressure signal in upper driver's pilot pressure signal is transferred to unlock by unlocking signal delivery outlet PB by unidirectional valve group 5 of getting on the bus
The unlock control terminal SH of slide valve makes the unlock slide valve 21 in rotary motor unlock slide valve module 2 work in upper, rotary motor 1
In revolution unlocked state, revolution movement is realized by operation revolution pilot handle.The movement that getting on the bus has includes swing arm, bucket
The drive actions of the hydraulic units such as bar, scraper bowl, auxiliary equipment, rotary motor.
When excavator is in oil inlet walking states for a long time, the pressure signal that unidirectional valve group 6 exports of walking makes shuttle valve 8
Bead be enclosed in the signal output PB oil circuit side of unidirectional valve group 5 of getting on the bus, the unlocking signal delivery outlet PB for unidirectional valve group 5 of getting on the bus
Oil circuit closing to the unlock control terminal SH of rotary motor unlock slide valve module 2, since rotary motor unlocks slide valve module
The spool leakage of middle unlock slide valve 21, the pilot pressure oil that unlock slide valve 21 is introduced from pilot pressure oil sources 3 pass through unlock slide valve
21 spool leaks into unlock control terminal SH, gradually rises the pressure for unlocking control terminal SH and makes to unlock the work of slide valve 21
In bottom, leads to the abnormal unlock of excavator revolution, cause to pacify so as to which excavator upper body oneself generation revolution occurs
Full accident.
Summary of the invention
The technical problem to be solved by the present invention is to only go for existing excavator revolution solution lock control oil circuit in long-time
The problem of rotary motor when acting will appear abnormal unlock is walked, and a kind of excavator revolution solution lock control oil circuit is provided, avoids digging
Pick machine rotary motor when long-time only has walking motion will appear abnormal unlock, improve the safety of machine.
The present invention is to realize that the technical solution of its purpose is such that provide a kind of excavator revolution solution lock control oil circuit,
Including rotary motor unlock slide valve module, unidirectional valve group of getting on the bus, the unidirectional valve group of walking, shuttle valve, if it is described get on the bus unidirectional valve group by
Dry check valve is constituted and each pilot signal oil circuit of the entrance of each check valve and action control main valve of getting on the bus corresponds and connects
Connect, each check valve for unidirectional valve group of getting on the bus outlet be interconnected after unlocking signal delivery outlet by pipeline simultaneously with it is described
The first entrance of shuttle valve is connected with the unlock control terminal of rotary motor unlock slide valve module, and the unidirectional valve group of walking is by several
Check valve is constituted and the entrance of each check valve connects one to one with each pilot signal oil circuit of travelling control main valve, and walking is single
Connect after being interconnected to the outlet of each check valve of valve group with the second entrance of the shuttle valve, the outlet of the shuttle valve with it is idle
Fast ring off signal delivery outlet connection；It is characterized in that the rotary motor unlocks the unlock control terminal of slide valve module and gets on the bus unidirectional
Throttle valve is connected on oil circuit between the unlocking signal delivery outlet of valve group, the outlet of the throttle valve is connect with fuel tank circuit.
The present invention is to realize that the technical solution of its purpose is such that provide a kind of excavator comprising above-mentioned excavator
The engine idling ring off signal leading-in end of revolution solution lock control oil circuit, the idling ring off signal delivery outlet and excavator connects
It connects, the unlocking pressure access port of the rotary motor unlock slide valve module is connect with pilot oil source.
Compared with prior art, the present invention section is arranged in the unlock control terminal of rotary motor unlock slide valve module in the present invention
It flows valve and carries out pressure release, for excavator when long-time only has walking motion, rotary motor unlocks unlock slide valve leakage in slide valve module
The hydraulic oil for entering unlock control terminal enters fuel tank circuit by throttle valve, avoid unlocking control terminal it is improper establish pressure and
Rotary motor unlock slide valve module is caused to unlock extremely.
Detailed description of the invention
Fig. 1 is the schematic illustration of existing excavator revolution solution lock control oil circuit.
Fig. 2 is the schematic illustration of excavator revolution solution lock control oil circuit of the present invention.
Parts title and serial number in figure:
Rotary motor 1, rotary motor unlock slide valve module 2, unlock slide valve 21, pilot pressure oil sources 3, action control of getting on the bus
Main valve pilot signal oil circuit 4, unidirectional valve group 5 of getting on the bus, the unidirectional valve group 6 of walking, travelling control main valve guide's oil circuit 7, shuttle valve 8, section
Flow valve 9, hydraulic oil container 10.
Specific embodiment
Illustrate specific embodiment with reference to the accompanying drawing.
As shown in Fig. 2, the excavator revolution solution lock control oil circuit in the present embodiment, including rotary motor unlock slide valve module
2, it gets on the bus unidirectional valve group 5, the unidirectional valve group 6 of walking, shuttle valve 8, unidirectional valve group 5 of getting on the bus is made of and each unidirectional several check valves
The entrance of valve and each pilot signal oil circuit 4 for action control main valve of getting on the bus connect one to one, and action control main valve of getting on the bus includes
For controlling the control bound of the hydraulic actuators such as boom cylinder, bucket arm cylinder, bucket cylinder, rotary motor, these controls master
Two hydraulic control ends of valve are respectively connect with guide's oil circuit all the way, the action control master that gets on the bus on the excavator for being equipped with auxiliary equipment
Valve further includes the control bound for controlling auxiliary equipment, and the hydraulic control end of the control bound is also connect with guide's oil circuit.It gets on the bus list
The check valve number having into valve group 5 is identical as the number of guide's oil circuit of action control main valve connection of getting on the bus, each unidirectional
Each guide's oil circuit that the entrance of valve is connect with action control main valve of getting on the bus connects one to one, each list for unidirectional valve group 5 of getting on the bus
It is interconnected to the outlet of valve and forms unlocking signal delivery outlet PB, each elder generation of the unidirectional valve group 5 of getting on the bus from action control main valve of getting on the bus
Maximum pilot pressure signal is acquired in Oil Guide road to export from unlocking signal delivery outlet PB.Unlocking signal delivery outlet PB passes through pipeline
It is connect simultaneously with the first entrance of the unlock control terminal SH of rotary motor unlock slide valve module 2 and shuttle valve 8.
Unidirectional valve group 6 of walking is made of four check valves.The travelling control main valve of excavator includes that left lateral walks control bound
Control bound is walked with right lateral, every control bound is connected with two-way guide's oil circuit, and four check valves enters in unidirectional valve group 6 of walking
Mouth is respectively connect with guide's oil circuit all the way, and the outlet of four check valves, which is interconnected, forms walking pilot signal delivery outlet PT, row
Unidirectional valve group 6 is walked to acquire the pilot pressure signal of travelling control main valve and pass through walking pilot signal delivery outlet PT output, row
Pilot signal delivery outlet PT is walked to connect by pipeline with the second entrance of shuttle valve 8.The outlet of shuttle valve 8 then forms engine idling solution
Except signal output PA.
In the unlock control terminal SH of unlocking signal delivery outlet PB and rotary motor the unlock slide valve module for unidirectional valve group 5 of getting on the bus
Between oil circuit on be provided with throttle valve 9, the outlet of throttle valve 9 is connect by fuel tank circuit with hydraulic oil container 10, throttle valve 9
The other end is connected to unlocking signal delivery outlet PB and unlocks on the oil circuit between control terminal SH.
Above-mentioned excavator revolution solution lock control oil circuit, can be used on hydraulic crawler excavator, engine idling ring off signal is defeated
Outlet PA is connect with engine idling ring off signal leading-in end, and rotary motor unlocks the unlocking pressure access port PG of slide valve module 2
It is connect with pilot oil source 3.
When get on the bus do not act generation when, upper driver's pilot pressure signal virtual value is zero, the unlock for unidirectional valve group 5 of getting on the bus
The pressure of signal output PB and the unlock control terminal SH of rotary motor unlock slide valve module are also zero, and rotary motor unlocks slide valve
Unlock slide valve 21 in module 2 works in bottom, and rotary motor 1 is in revolution self-locking state, when getting on the bus, there is movement to occur,
Unidirectional valve group 5 of getting on the bus transmits maximum pilot pressure signal in upper driver's pilot pressure signal by unlocking signal delivery outlet PB
To the unlock control terminal SH of unlock slide valve, the unlock slide valve 21 in rotary motor unlock slide valve module 2 is made to work in upper, revolution
Motor 1 is in revolution unlocked state, realizes revolution movement by operation revolution pilot handle.The movement that getting on the bus has includes dynamic
The drive actions of the hydraulic units such as arm, dipper, scraper bowl, auxiliary equipment, rotary motor.
When excavator is in walking states for a long time, the pressure signal that unidirectional valve group 6 exports of walking makes the small of shuttle valve 8
Ball is enclosed in the signal output PB oil circuit side for unidirectional valve group 5 of getting on the bus, and the unlocking signal delivery outlet PB for unidirectional valve group 5 of getting on the bus extremely is returned
The oil circuit turned between the unlock control terminal SH of motor unlock slide valve module 2 is connect by throttle valve 9 with hydraulic oil container 10, is returned at this time
The spool for turning to unlock slide valve 21 in motor unlock slide valve module 2 leaks into the hydraulic oil of unlock control terminal SH by throttle valve 9
Hydraulic oil container 10 is entered, so that the improper pressure of establishing of unlock control terminal SH of rotary motor unlock slide valve module 2 be avoided to lead
The abnormal unlock of rotary motor 1 is caused, so that rotary motor be avoided to lead to safety accident because unlocking revolution extremely.
Claims (2)
1. a kind of excavator revolution solution lock control oil circuit, including rotary motor unlock slide valve module, unidirectional valve group of getting on the bus, walking list
To valve group, shuttle valve, the unidirectional valve group of getting on the bus is made of several check valves and the entrance of each check valve and movement of getting on the bus are controlled
Each pilot signal oil circuit of main valve processed connects one to one, after the outlet of each check valve for unidirectional valve group of getting on the bus is interconnected
Unlocking signal delivery outlet unlocks the solution lock control of slide valve module by pipeline with the first entrance and rotary motor of the shuttle valve simultaneously
End processed connection, the unidirectional valve group of walking is made of several check valves and the entrance of each check valve and travelling control main valve
Each pilot signal oil circuit connects one to one, the interconnected rear and shuttle valve in the outlet of each check valve for unidirectional valve group of walking
Second entrance connection, the outlet of the shuttle valve is connect with idling ring off signal delivery outlet；It is characterized in that the rotary motor
It unlocks and is connected with throttling on the oil circuit among the unlock control terminal of slide valve module and the unlocking signal delivery outlet for unidirectional valve group of getting on the bus
The outlet of valve, the throttle valve is connect with fuel tank circuit.
2. a kind of excavator, it is characterised in that released including excavator revolution solution lock control oil circuit, the idling in claim 1
The connection of the engine idling ring off signal leading-in end of signal output and excavator, the solution of the rotary motor unlock slide valve module
Lock pressure access port is connect with pilot oil source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060450.4A CN109183891B (en) | 2018-09-12 | 2018-09-12 | Excavator rotation unlocking control oil way and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811060450.4A CN109183891B (en) | 2018-09-12 | 2018-09-12 | Excavator rotation unlocking control oil way and excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109183891A true CN109183891A (en) | 2019-01-11 |
| CN109183891B CN109183891B (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811060450.4A Active CN109183891B (en) | 2018-09-12 | 2018-09-12 | Excavator rotation unlocking control oil way and excavator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101553A (en) * | 2020-01-14 | 2020-05-05 | 徐州徐工矿业机械有限公司 | Electric control rotary brake release system of hydraulic excavator and use method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110016756A1 (en) * | 2009-03-29 | 2011-01-27 | Schmidt Stephen T | Tool attachments on an auto-powered mobile machine |
| US20120296574A1 (en) * | 2011-05-19 | 2012-11-22 | Hitachi Construction Machinery Co., Ltd. | Information management system for construction machine |
| CN103806498A (en) * | 2014-02-21 | 2014-05-21 | 柳州柳工液压件有限公司 | Excavator hydraulic 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 |
| CN107208397A (en) * | 2014-12-24 | 2017-09-26 | 沃尔沃建筑设备公司 | The rotation control device and its control method of Architectural Equipment |
-
2018
- 2018-09-12 CN CN201811060450.4A patent/CN109183891B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110016756A1 (en) * | 2009-03-29 | 2011-01-27 | Schmidt Stephen T | Tool attachments on an auto-powered mobile machine |
| US20120296574A1 (en) * | 2011-05-19 | 2012-11-22 | Hitachi Construction Machinery Co., Ltd. | Information management system for construction machine |
| CN103806498A (en) * | 2014-02-21 | 2014-05-21 | 柳州柳工液压件有限公司 | Excavator hydraulic system |
| CN107208397A (en) * | 2014-12-24 | 2017-09-26 | 沃尔沃建筑设备公司 | The rotation control device and its control method of Architectural Equipment |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101553A (en) * | 2020-01-14 | 2020-05-05 | 徐州徐工矿业机械有限公司 | Electric control rotary brake release system of hydraulic excavator and use method |
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| Publication number | Publication date |
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| CN109183891B (en) | 2021-05-14 |
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