CN109281881B - Engineering machinery and getting-on rotation control system thereof - Google Patents
Engineering machinery and getting-on rotation control system thereof Download PDFInfo
- Publication number
- CN109281881B CN109281881B CN201811495632.4A CN201811495632A CN109281881B CN 109281881 B CN109281881 B CN 109281881B CN 201811495632 A CN201811495632 A CN 201811495632A CN 109281881 B CN109281881 B CN 109281881B
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- valve
- control
- locking
- commutation
- engineering machinery
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- 230000008859 change Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- E02F9/225—Control of steering, e.g. for hydraulic motors driving the vehicle tracks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention relates to the field of engineering machinery, and discloses engineering machinery and a boarding rotation control system thereof, wherein the boarding rotation control system comprises a rotation motor (4) and a rotation reversing valve (5), the rotation reversing valve (5) is connected with a reversing control oil path (L1) provided with a rotation control handle (3), the reversing control oil path is provided with a rotation locking valve (2) controlled by a locking button, and the normal position of the rotation locking valve enables the reversing control oil path (L1) to be in a communicated state so as to control the reversing position of the rotation reversing valve (5) through the rotation control handle (3); the rotary locking valve (2) can be controlled by a locking button to be switched to a locking position, and the locking position enables a reversing control oil path (L1) to be in a cut-off state, so that reversing control of the rotary steering valve (5) by a rotary control handle (3) is disabled. The getting-on rotary control system can reduce or avoid the problems of high maintenance cost and the like caused by a friction type rotary locking mode.
Description
Technical field
The present invention relates to engineering machinery fields, and in particular, to a kind of upper-part rotation control system of engineering machinery.Herein
On the basis of, the invention further relates to a kind of engineering machinery.
Background technique
Excavator is one of common engineering machinery in engineering construction, is mainly used for excavating and shipping material etc..Normal
In operation process, getting on the bus for excavator drives revolution by rotary control system (hydraulic system), is made with the handling etc. for realizing material
Industry process.
In pipeline engineering construction, also often needs to lift pipeline using excavator, expand the use scope of excavator.?
In lifting operation, accidentally touching revolution control handle causes safety accident in order to prevent, needs the revolution got on the bus acting locking.It is existing
Common revolution lock mode is to be locked by the brake of hydraulic control to rotary motor, will using the rubbing action of friction plate
Rotary position locking.Operator is to the manipulation button on control panel, so that the solenoid valve in hydraulic control oil circuit commutates, with
So that brake locks rotary motor or unlocks.This lock mode existing defects, the i.e. rubbing action of friction plate are easy
Damage occurs in use or loss, maintenance cost are higher.
Summary of the invention
The object of the present invention is to provide a kind of upper-part rotation control system that can be used for such as excavator, upper-part rotation controls
The problems such as maintenance cost is high caused by system can be reduced or avoided because of frictional revolution lock mode.
To achieve the goals above, the present invention provides a kind of upper-part rotation control system of engineering machinery, including revolution horse
It reaches and the slewing directional control valve of the gyratory directions for controlling the rotary motor, the slewing directional control valve is connected with equipped with revolution manipulation hand
The commutation control oil circuit of handle, the commutation control oil circuit between the slewing directional control valve and the revolution control handle
Oil circuit part is equipped with the revolution lock-up valve controlled by locking press button, which includes normal orientation, the normal orientation
So that the commutation control oil circuit is in connected state can control the slewing directional control valve by the revolution control handle
Commutation position；Latched position, the revolution lock-up valve can be controlled by the locking press button to switch from the normal orientation
To the latched position, and the latched position makes the commutation control oil circuit be in off state, so that the revolution manipulates
Handle fails to the commutation control of the slewing directional control valve.
Preferably, the slewing directional control valve be three position directional valve, the commutation control oil circuit include be respectively connected to this three
The the first commutation control oil circuit and the second commutation control oil circuit of two hydraulic control oil pockets of position switching valve, are changed with that can control this three
To Vavle switching to two of two difference gyratory directions for corresponding to the rotary motor different commutation positions.
Preferably, the revolution lock-up valve on the first commutation control oil circuit and the second commutation control oil circuit is integrated into
Valve block.
Preferably, the revolution lock-up valve has the hydraulic control oil pocket for being connected with pilot control oil circuit, and the locking press button is logical
It crosses and controls the on off operating mode of the pilot control oil circuit revolution lock-up valve is made to switch to the lock from the normal orientation
Positioning is set.
Preferably, the pilot control oil circuit is equipped with locking control solenoid valve, and the locking press button signal is connected to this
Locking control solenoid valve, with can by make the locking control solenoid valve obtain it is electric and the pilot control oil circuit is connected.
Preferably, the pilot pressure that the pilot control oil circuit acts on the hydraulic control oil pocket of the revolution lock-up valve is 3MPa
~4MPa.
Preferably, the locking control solenoid valve is two position, three-way electromagnetic change valve.
Another aspect of the present invention provides a kind of engineering machinery equipped with above-mentioned upper-part rotation control system.
Preferably, which is excavator.
Through the above technical solutions, upper-part rotation control system of the invention makes revolution manipulation hand using revolution lock-up valve
Commutation control oil communication or cut-off between handle and slewing directional control valve, with make in the off state turn round control handle to return
The commutation control failure for turning reversal valve, realizes the locking of rotary motor.Thus, it is possible to reduce the rubbing action of brake, even
Brake can be cancelled, maintenance cost is effectively reduced.
For being, for example, the engineering machinery of excavator, lifting is only its extension function, in practical applications in order to realize object
Material the basic functions such as excavates and needs to keep getting on the bus for a long time rotatable state.Revolution lock-up valve of the invention makes in normal orientation
It obtains commutation control circuit and is in connected state, only revolution control handle is truncated and returns using locking press button when needing to turn round locking
The oil liquid connected relation for turning reversal valve locks rotary motor using the Median Function of slewing directional control valve, and can reduce to manipulation
The adverse effect that convenience is formed, and convenient for saving locking and unlocking bring energy consumption.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of revolution locking hydraulic principle of the upper-part rotation control system of preferred embodiment according to the present invention
Figure.
Description of symbols
1- locking control solenoid valve；2- turns round lock-up valve；3- turns round control handle；4- rotary motor；5- slewing directional control valve；
L1- commutation control oil circuit；L2- pilot control oil circuit.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the following description, upper-part rotation control system provided by the invention mainly will be described by application of excavator
Preferred embodiment.But it is understood that engineering machinery of the present invention can also be other rotatable engineering equipments of getting on the bus.
As shown in connection with fig. 1, upper-part rotation control system of the invention includes rotary motor 4 and rotary control valve 5, Ke Yiyong
In the engineering machinery such as excavator.The transmission connection of rotary motor 4 in getting on the bus, rotary control valve 5 can connect oil inlet oil circuit and
Oil return circuit (not shown), and it is connected to by working oil path two oil pockets of rotary motor 4.As a result, by the way that commutation will be turned round
Valve 5 switches to different commutation positions, and the pressure oil of oil inlet oil circuit conveying can drive rotary motor 4 to rotate in different directions, with
Drive upper-part rotation.
Slewing directional control valve 5 is pilot operated directional control valve, and is connected with commutation control oil circuit L1, and commutation control oil circuit L1 is equipped with
Control handle 3 is turned round, the different maneuverability patterns of the revolution control handle 3 correspond to the different commutation positions of slewing directional control valve 5.?
In illustrated embodiment, slewing directional control valve 5 is three position directional valve, has been correspondingly connected with the first commutation control oil circuit L11 and second and has changed
To control oil circuit L12.When the revolution manipulation of control handle 3 is by the first commutation control oil circuit L11 in the left side of slewing directional control valve 5
When the effect of hydraulic control oil pocket has commutation pressure, slewing directional control valve 5 commutates to left position, and rotary motor 4 turns round in one direction；Work as revolution
The manipulation of control handle 3 is pressed to have to commutate in the right side hydraulic control oil pocket effect of slewing directional control valve 5 by the second commutation control oil circuit L12
When power, the commutation of slewing directional control valve 5 to right position, rotary motor 4 turns round in another direction；Behaviour is not implemented to revolution control handle 3
When vertical, slewing directional control valve 5 is reset to middle position, and the oil circuit for making the slewing directional control valve 5 be connected to the rotary motor 4 ends,
Rotary motor 4 keeps locked.
In order to lock rotary position during excavator lifting operation, the present invention is located at back commutation control oil circuit L1's
Turn reversal valve 5 and the oil circuit part turned round between control handle 3 is equipped with the revolution lock-up valve 2 controlled by locking press button, this time
Slewing directional control valve 5 can be changed and turn round the on off operating mode of the oil circuit between control handle 3 by turning lock-up valve 2, will be changed with will pass through
Make the commutation control failure for turning round control handle 3 to slewing directional control valve 5 to control oil circuit L1 cut-off, rotary motor 4 is kept
Locked state.
Specifically, revolution lock-up valve 2 has normal orientation and latched position.Normal orientation described herein refers to revolution locking
State of the valve 2 when not acted on by any external force (manual force, electromagnetic force etc.), i.e. state shown in Fig. 1.At this point, commutation control
Liquefaction road L1 is in connected state, thus, it is possible to control the commutation position of slewing directional control valve 5 by revolution control handle 3, that is, grasps
The vertical hydraulic control oil pocket for turning round control handle 3 and commutation pressure being enabled to act on slewing directional control valve 5, so that slewing directional control valve 5 changes
To and using the pressure oil driving revolution of rotary motor 4.It is from the normal orientation that the revolution lock-up valve 2 can be controlled by locking press button
Latched position is switched to, in the latched position, commutation control oil circuit L1 is in off state, even if manipulation revolution control handle 3,
Commutation pressure can not act on the hydraulic control oil pocket of slewing directional control valve 5, thus turn round the changing to slewing directional control valve 5 of control handle 3
It fails to control.
By this set, when needing to lock the rotary position got on the bus, lock-up valve 2 can will be turned round by locking press button
Latched position is switched to from normal orientation, so that rotary motor 4 locks.Thus, it is possible to reduce brake rubbing to rotary motor 4
Wiping effect, it might even be possible to cancel brake, cost consumption caused by plant maintenance is effectively reduced.
In excavator, lifting operation the routine works such as excavates compared to material and belongs to extension function, gets on the bus when needing long
Between keep rotatable state without locking.Revolution lock-up valve 2 of the invention makes at the L1 of commutation control circuit in normal orientation
In connected state, without being operated to revolution lock-up valve 2 in routine work；Only pressed when needing to turn round locking using locking
The oil liquid connected relation of button truncation revolution control handle 3 and slewing directional control valve 5, manipulates more convenient property.Further, since routine work
In without frequently unlock turn round lock-up valve 2 (being automatically reset under normal orientation to unlocked position), the present invention can reduce because locking
With unlock rotary position bring energy consumption.
In upper-part rotation control system of the invention, the revolution lock-up valve 2 of use can be formed as multiple structural forms
And control form.For example, revolution lock-up valve 2 can be pilot operated valve device or solenoid valve etc..In order to facilitate the installation of and arrangement, diagram are preferred
The revolution lock-up valve 2 on the first commutation control oil circuit L11 and the second commutation control oil circuit L12 is integrated into valve in embodiment
Block, same pilot control oil circuit L2 can be utilized synchronously to drive the connection of revolution lock-up valve 2 or cut-off the first commutation control oil
Road L11 and the second commutation control oil circuit L12.
Revolution lock-up valve 2 in illustrated embodiment is pilot operated valve device, and hydraulic control oil pocket is connected with pilot control oil circuit L2, should
Pilot control oil circuit L2 can connect to the pressure oil-source with predetermined pilot pressure.Locking press button can pass through control as a result,
The on off operating mode of pilot control oil circuit L2 makes revolution lock-up valve 2 switch to locking bit from normal orientation under connected state
It sets, rotary motor 4 is locked；In the off state, the hydraulic control oil pocket for turning round lock-up valve 2 does not have oil pressure, automatically resets to normal
State position.
Wherein, the valve controlled by locking press button can be set on pilot control oil circuit L2, to be connected to or be truncated guide's control
Liquefaction road L2.The valve can be switch valve, reversal valve etc..In the shown embodiment, pilot control oil circuit L2 is equipped with lock
Surely solenoid valve 1 is controlled, locking control 1 signal of solenoid valve is connected to locking press button, which enables to locking control
Solenoid valve 1 must be electric, pilot control oil circuit L2 is connected, so that pilot pressure acts on the hydraulic control oil pocket of revolution lock-up valve 2.The lock
Surely control solenoid valve 1 can be two position, three-way electromagnetic change valve.
In the preferred embodiment of the present invention, revolution lock-up valve 2 is hydraulic control pilot valve, can be with lesser guide
The locking of pressure realization rotary motor 4.Wherein, the pilot pressure on pilot control oil circuit L2 can be 3MPa~4MPa.
The present invention also provides a kind of engineering machinery including above-mentioned upper-part rotation control system, such as excavators.Utilize this hair
The upper-part rotation control system of bright offer, when needing to lock revolution movement, operator can operate the lock on control panel
Determine button, so that locking control solenoid valve 1 must be electric, pilot pressure acts on the hydraulic control oil pocket of revolution lock-up valve 2, so that the revolution
Lock-up valve 2 switches to latched position from diagram normal orientation.In this case, the hydraulic control oil pocket of slewing directional control valve 5 is connected to oil
Case, even if operator either intentionally or unintentionally touches revolution control handle 3, slewing directional control valve 5 is held in middle position, turns round horse
It will not be acted up to 4, excavator is in revolution lock state, can safely implement the operation process such as lifting.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (9)
1. the upper-part rotation control system of a kind of engineering machinery, including rotary motor (4) and for controlling the rotary motor (4)
The slewing directional control valve (5) of gyratory directions, the slewing directional control valve (5) are connected with the commutation control oil for being equipped with revolution control handle (3)
Road (L1), which is characterized in that the commutation control oil circuit (L1) is located at the slewing directional control valve (5) and revolution manipulation hand
Oil circuit part between handle (3) is equipped with the revolution lock-up valve (2) controlled by locking press button, which includes
Normal orientation, the normal orientation make the commutation control oil circuit (L1) be in connected state with can be by the revolution
Control handle (3) controls the commutation position of the slewing directional control valve (5)；
Latched position, the revolution lock-up valve (2) can be controlled by the locking press button to switch to this from the normal orientation
Latched position, and the latched position makes the commutation control oil circuit (L1) be in off state, so that the revolution manipulates
Handle (3) fails to the commutation control of the slewing directional control valve (5),
The slewing directional control valve (5) is three position directional valve, and is set as under middle position state, and the slewing directional control valve (5) is connected to
Two oil circuits between two oil pockets of the rotary motor (4) mutually end, so that the rotary motor (4) keeps quiet
Only.
2. the upper-part rotation control system of engineering machinery according to claim 1, which is characterized in that the commutation control oil
Road (L1) includes being respectively connected to the first commutation control oil circuits (L11) and second of two hydraulic control oil pockets of the three position directional valve to change
To control oil circuit (L12), switched to so that the three position directional valve can be controlled corresponding to two of the rotary motor (4) different institutes
State two different commutation positions of gyratory directions.
3. the upper-part rotation control system of engineering machinery according to claim 2, which is characterized in that the first commutation control
The revolution lock-up valve (2) on liquefaction road (L11) and the second commutation control oil circuit (L12) is integrated into valve block.
4. the upper-part rotation control system of engineering machinery as claimed in any of claims 1 to 3, which is characterized in that
Revolution lock-up valve (2) has the hydraulic control oil pocket for being connected with pilot control oil circuit (L2), and the locking press button passes through control institute
The on off operating mode for stating pilot control oil circuit (L2) makes the revolution lock-up valve (2) switch to the locking from the normal orientation
Position.
5. the upper-part rotation control system of engineering machinery according to claim 4, which is characterized in that the pilot control oil
Road (L2) is equipped with locking control solenoid valve (1), and the locking press button signal is connected to locking control solenoid valve (1), with energy
It reaches by so that electric the pilot control oil circuit (L2) must be connected in locking control solenoid valve (1).
6. the upper-part rotation control system of engineering machinery according to claim 5, which is characterized in that the pilot control oil
The pilot pressure that road (L2) acts on the hydraulic control oil pocket of revolution lock-up valve (2) is 3MPa~4MPa.
7. the upper-part rotation control system of engineering machinery according to claim 5, which is characterized in that the locking control electricity
Magnet valve (1) is two position, three-way electromagnetic change valve.
8. a kind of engineering machinery, which is characterized in that the engineering machinery is equipped with as claimed in any of claims 1 to 7
Upper-part rotation control system.
9. engineering machinery according to claim 8, which is characterized in that the engineering machinery is excavator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811495632.4A CN109281881B (en) | 2018-12-07 | 2018-12-07 | Engineering machinery and getting-on rotation control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811495632.4A CN109281881B (en) | 2018-12-07 | 2018-12-07 | Engineering machinery and getting-on rotation control system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109281881A CN109281881A (en) | 2019-01-29 |
| CN109281881B true CN109281881B (en) | 2019-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811495632.4A Active CN109281881B (en) | 2018-12-07 | 2018-12-07 | Engineering machinery and getting-on rotation control system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109281881B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747932B (en) * | 2019-10-18 | 2022-01-11 | 广西柳工机械股份有限公司 | Excavator control system and method |
| CN111056454B (en) * | 2019-12-18 | 2021-07-23 | 中联重科股份有限公司 | Control method and system for loaded running attitude of crane |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3754757B2 (en) * | 1996-06-24 | 2006-03-15 | 株式会社 神崎高級工機製作所 | Hydraulic pump unit for outboard motor |
| JP2011021688A (en) * | 2009-07-15 | 2011-02-03 | Hitachi Constr Mach Co Ltd | Hydraulic driving device |
| CN202000992U (en) * | 2011-03-31 | 2011-10-05 | 湖南奥盛特重工科技有限公司 | Rotation control system for upper part of rotary drill rig |
| CN204266288U (en) * | 2014-11-28 | 2015-04-15 | 中联重科股份有限公司渭南分公司 | Locking rotation control liquid path and control loop of rotation motor, and engineering machinery |
| CN204980960U (en) * | 2015-07-29 | 2016-01-20 | 徐州重型机械有限公司 | Hydraulic control system and hoist with from discernment gyration protect function |
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2018
- 2018-12-07 CN CN201811495632.4A patent/CN109281881B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109281881A (en) | 2019-01-29 |
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Effective date of registration: 20211207 Address after: Room 4015, office building, 677 Lugu Avenue, Changsha hi tech Development Zone, Hunan 410000 Patentee after: Zoomlion earth moving machinery Co.,Ltd. Address before: 410013 No. 361 South silver basin, Changsha, Hunan, Yuelu District Patentee before: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Patentee before: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY DEVELOPMENT Co.,Ltd. WEINAN BRANCH |
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