CN101619580A - Method and device for improving operation comfort of excavator - Google Patents
Method and device for improving operation comfort of excavator Download PDFInfo
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- CN101619580A CN101619580A CN200910182318A CN200910182318A CN101619580A CN 101619580 A CN101619580 A CN 101619580A CN 200910182318 A CN200910182318 A CN 200910182318A CN 200910182318 A CN200910182318 A CN 200910182318A CN 101619580 A CN101619580 A CN 101619580A
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Abstract
The invention discloses a method and a device for improving the operation comfort of an excavator. The device is characterized in that a one-way throttle valve is additionally arranged at one end or both ends of a pilot oil line of a revolving control valve core and a movable arm control valve core; when pilot oil flows to a main control valve core from a corresponding pilot valve, the single throttle valve on the branch is in an opened state; when the pilot oil flows to the corresponding pilot valve from the main control valve core, the one-way throttle valve on the branch is in a closed state, and the pilot oil returns through throttle holes of the one-way throttle valve. By arranging the one-way throttle valve on the pilot oil of the revolving control valve core and the movable arm control valve core, the oil returning speed is limited, and the hydraulic impact is reduced, thus the operation comfort is enhanced.
Description
Technical field
The present invention relates to a kind of control method and device thereof of excavator, be specifically related to a kind of method and device thereof that can improve operation comfort of excavator.
Background technology
Hydraulic crawler excavator is widely used in the foundation dredging of building construction and the occasions such as cleaning, urban duct layings, construction of water conservancy works after the completion, has the maneuverability of constructing, advantage that efficient is high.Generally partly form by equipment, slewing equipment, running gear and hydraulic control device etc., described equipment is a device of directly finishing mining task, three parts are hinged forms by swing arm, dipper, scraper bowl etc., and swing arm rises and falls, dipper stretches and scraper bowl rotates and the slewing equipment revolution is controlled each hydraulic pump fuel feeding by control device through hydraulic circuit and realized.When carrying out digging operation on construction ground, normally the usage mining machine carries out operation for a long time.Therefore, under the prerequisite that does not influence operating efficiency, operating personnel have very high requirement for the operation comfort of excavator.
So-called operation comfort comprises stability, the working-noise of excavator operation and the many aspects of taking such as comfortableness, excavator operation comprises revolution operation, swing arm, dipper, scraper bowl operation, walking operation, this class action all is to provide a guide oil earlier to the control spool by the excavator hydraulic control circuit, open the valve of respective side, be communicated with the main pump oil circuit, main pump oil supply then, engine drive device fulfils assignment.Yet in this a series of operation process, because the excessive velocities of oil supply and oil return, make fuselage when changing operation, just have bigger acceleration, integral body shake, noise can occur or discomfort such as rock, and concerning the operating personnel of long-time operation under such environment, is quite uncomfortable, increase sense of fatigue, influence work quality; And if directly reduce the flow of oil circuit, limited flow rate can reduce to impact, but certainly will influence the operating efficiency of excavator.
So, if can improve the stability of complete machine operation, so just can realize raising to operation comfort of excavator by reducing the impact of excavator hydraulic system, also guaranteed the safety of job site simultaneously.
Summary of the invention
The object of the invention provides a kind of method and device thereof that improves operation comfort of excavator, by the use to this method and device, can guarantee construction safety taking into account raising operation comfort and job stabilization under the situation of operating efficiency.
For achieving the above object, the technical solution used in the present invention is: a kind of method of improving operation comfort of excavator, and the one or both ends in guide's oil circuit of rotary control valve core and swing arm control spool add an one-way throttle valve; When guide oil when the pilot valve of correspondence flows to main control core valve, described one-way throttle valve on this branch road is in opening, when guide oil when main control core valve flows to corresponding pilot valve, described one-way throttle valve on this branch road is in closure state, and guide oil is by the throttle orifice place oil return of described one-way throttle valve.
In the technique scheme, the revolution operation of described slewing equipment and the lifting of swing arm all are to drive by the hydraulic control circuit fuel feeding with descending, action is each time all opened the control spool of related device by provided a guide oil by pilot valve, connects the main pump oil circuit, the engine drive device running.Among the present invention, in the one or both ends of rotary control valve core and swing arm control spool one-way throttle valve is set respectively, to carrying out throttling from control spool oil return to the hydraulic oil in the pilot valve, opposite, guide oil normally to by pilot valve flow direction control valve core does not influence the startup to equipment.Because throttling has been carried out in the guide oil oil return of slewing equipment and two key operation devices of swing arm, slowed down oil return speed, make the keying of control spool become soft, can reduce the hydraulic shock of excavator when revolution operation and swing arm lifting/decline operation greatly, and then improve the sense of discomfort that complete machine produces operating personnel when operation, improve operation comfort.
In general, one-way throttle valve all is set at the two ends of rotary control valve core guide oil circuit, the oil return speed the during revolution of control and arranged on left and right sides, swing arm control spool is provided with one-way throttle valve in decline side (being the loculus side) at least, the impact force when reducing swing arm decline.
Optimized technical scheme is, in described dipper control spool, scraper bowl control spool, the walking mechanism control spool guide oil road one or two or full spool one or both ends are provided with one-way throttle valve, when guide oil when the pilot valve of correspondence flows to main control core valve, described one-way throttle valve on this branch road is in opening, when guide oil when main control core valve flows to corresponding pilot valve, described one-way throttle valve on this branch road is in closure state, and guide oil is by the throttle orifice place oil return of described one-way throttle valve.
As required, except that rotary control valve core and swing arm control spool, be chosen in dipper, scraper bowl, the running gear again or all control the spool one or both ends one-way throttle valve is set respectively, start with from each operational motion of excavator, control oil return speed respectively, thereby improve the comfortableness in a whole set of operation process.
Further technical scheme is, described one-way throttle valve has pressure compensation, and the influence that makes restriction effect not changed by oil viscosity, seasonal temperature and pressure improves the stationarity of excavator action.
For achieving the above object, the technical solution used in the present invention is: a kind of device that improves operation comfort of excavator, one or both ends in guide's oil circuit of rotary motor control spool and swing arm control spool add an one-way throttle valve, one way valve input in the described one-way throttle valve is positioned at corresponding pilot valve side, and output is positioned at corresponding main control core valve side.
Optimized technical scheme is, in described dipper control spool, scraper bowl control spool, the walking mechanism control spool guide oil road one or two or full spool one or both ends are provided with one-way throttle valve, one way valve input in the described one-way throttle valve is positioned at corresponding pilot valve side, and output is positioned at corresponding main control core valve side.
Further technical scheme is, described one-way throttle valve comprises an one way valve, a choke valve and a reducing valve, and described choke valve is connected with reducing valve, and the two ends of described one way valve are connected to respectively on the output of input, reducing valve of choke valve.When the before pilot valve flow direction control valve of guide oil core, one way valve is an open mode, hydraulic oil passes through from one way valve place branch road normal flow, when the guide oil oil return (from controlling spool when pilot valve flows), one way valve is a closed condition, hydraulic oil can only pass through from choke valve place branch road, be subjected to the restriction in choke valve throttle orifice aperture, reduced the flow of hydraulic oil, slow down oil return speed, carry out pressure compensation through reducing valve again, make and the influence that restriction effect is not changed by oil viscosity, seasonal temperature and pressure simultaneously improve the stationarity of excavator action.
In the technique scheme, the throttle orifice aperture of described one-way throttle valve is between φ 0.3mm～φ 3.0mm, and flow according to the difference of one-way throttle valve installation site, is selected the one-way throttle valve in different apertures between 5L/min～50L/min.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
1. the present invention is provided with one-way throttle valve in the one or both ends on rotary control valve core and swing arm control spool guide oil road, guide oil from pilot valve to the control spool normally passes through, thereby the control spool is subjected to the choke valve limited flow to the oil return of pilot valve, slow down oil return speed, thereby realization reduces the hydraulic shock when digger revolving or swing arm initial job, effectively improves operation comfort; Simultaneously, the decline of hydraulic shock can be played the effect of parts such as protection pilot valve, rotary motor, prolongs body application life;
2. be chosen in as required on the one or both ends on control spool guide oil road of dipper, scraper bowl, walking mechanism one-way throttle valve is set, the oil return speed of control relevant work device, reduce hydraulic shock, make excavator when carrying out each operation, all be in state more stably, improve the comfortableness of entire job process;
3. the one-way throttle valve among the present invention has pressure compensation, and the influence that makes restriction effect not changed by oil viscosity, seasonal temperature and pressure improves the stationarity of excavator action.
Description of drawings
Fig. 1 is the control block diagram of the embodiment of the invention one;
Fig. 2 is the hydraulic principle schematic diagram of the embodiment of the invention one;
Fig. 3 is the control block diagram of running gear in the embodiment of the invention two;
Fig. 4 is the hydraulic principle schematic diagram of running gear in the embodiment of the invention two.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment one: extremely shown in Figure 2 referring to Fig. 1, a kind of method and device that improves operation comfort of excavator, guide's oil circuit two ends at the rotary control valve core respectively are provided with an one-way throttle valve, loculus end in swing arm control spool guide oil road is established an one-way throttle valve, and the unloading end in dipper control spool guide oil road is established an one-way throttle valve; Described one-way throttle valve has pressure compensation, by an one way valve, one choke valve and a reducing valve constitute, described choke valve is connected with reducing valve, the two ends of described one way valve are connected to the input of choke valve respectively, on the output of reducing valve, the one way valve input is positioned at corresponding pilot valve side, output is positioned at corresponding main control core valve side, when guide oil when the pilot valve of correspondence flows to main control core valve, described one-way throttle valve on this branch road is in opening, when guide oil when main control core valve flows to corresponding pilot valve, described one-way throttle valve on this branch road is in closure state, and guide oil is by the throttle orifice place oil return of described one-way throttle valve.
In the present embodiment, the throttle orifice aperture of each pressure compensation type one-way throttle valve is chosen as follows: it is φ 0.9mm that the throttle orifice aperture is all installed at rotary control valve core two ends, and flow is the one-way throttle valve of 20L/min; φ 1.1mm is installed in the lifting action control port (being the loculus end) of swing arm control spool, and flow is the one-way throttle valve of 20L/min; φ 1.1mm is installed in the unloading action control port of dipper control spool, and flow is the one-way throttle valve of 20L/min.When turning round operation, swing arm step-down operation and dipper dredge operation like this about carrying out, the hydraulic shock of system obviously reduces, and the operation comfort of excavator improves.
Embodiment two: shown in Fig. 3,4, a kind of method and device that improves operation comfort of excavator, guide's oil circuit two ends at the rotary control valve core respectively are provided with an one-way throttle valve, an one-way throttle valve is established at two ends in swing arm, dipper, scraper bowl control spool guide oil road respectively, and an one-way throttle valve is established at the two ends in walking mechanism controls spool guide oil circuit respectively; Described one-way throttle valve has pressure compensation, by an one way valve, one choke valve and a reducing valve constitute, described choke valve is connected with reducing valve, the two ends of described one way valve are connected to the input of choke valve respectively, on the output of reducing valve, the one way valve input is positioned at corresponding pilot valve side, output is positioned at corresponding main control core valve side, when guide oil when the pilot valve of correspondence flows to main control core valve, described one-way throttle valve on this branch road is in opening, when guide oil when main control core valve flows to corresponding pilot valve, described one-way throttle valve on this branch road is in closure state, and guide oil is by the throttle orifice place oil return of described one-way throttle valve.
Claims (7)
1. method of improving operation comfort of excavator is characterized in that: the one or both ends in guide's oil circuit of rotary control valve core and swing arm control spool add an one-way throttle valve; When guide oil when the pilot valve of correspondence flows to main control core valve, described one-way throttle valve on this branch road is in opening, when guide oil when main control core valve flows to corresponding pilot valve, described one-way throttle valve on this branch road is in closure state, and guide oil is by the throttle orifice place oil return of described one-way throttle valve.
2. the method for improving operation comfort of excavator according to claim 1, it is characterized in that: at described dipper control spool, scraper bowl control spool, in the walking mechanism control spool guide oil road one or two or full spool one or both ends are provided with one-way throttle valve, when guide oil when the pilot valve of correspondence flows to main control core valve, described one-way throttle valve on this branch road is in opening, when guide oil when main control core valve flows to corresponding pilot valve, described one-way throttle valve on this branch road is in closure state, and guide oil is by the throttle orifice place oil return of described one-way throttle valve.
3. the method for improving operation comfort of excavator according to claim 1 and 2 is characterized in that: described one-way throttle valve has pressure compensation.
4. device that improves operation comfort of excavator, it is characterized in that: the one or both ends in guide's oil circuit of rotary control valve core and swing arm control spool add an one-way throttle valve, one way valve input in the described one-way throttle valve is positioned at corresponding pilot valve side, and output is positioned at corresponding main control core valve side.
5. the device that improves operation comfort of excavator according to claim 4, it is characterized in that: one or two in described dipper control spool, scraper bowl control spool, the walking mechanism control spool guide oil road or full spool one or both ends are provided with one-way throttle valve, one way valve input in the described one-way throttle valve is positioned at corresponding pilot valve side, and output is positioned at corresponding main control core valve side.
6. according to claim 4 or the 5 described devices that improve operation comfort of excavator, it is characterized in that: described one-way throttle valve comprises an one way valve, a choke valve and a reducing valve, described choke valve is connected with reducing valve, and the two ends of described one way valve are connected to respectively on the output of input, reducing valve of choke valve.
7. the device that improves operation comfort of excavator according to claim 4 is characterized in that: the throttle orifice aperture of described one-way throttle valve is between φ 0.3mm～φ 3.0mm, and flow is between 5L/min～50L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910182318A CN101619580A (en) | 2009-07-08 | 2009-07-08 | Method and device for improving operation comfort of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910182318A CN101619580A (en) | 2009-07-08 | 2009-07-08 | Method and device for improving operation comfort of excavator |
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| Publication Number | Publication Date |
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| CN101619580A true CN101619580A (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910182318A Pending CN101619580A (en) | 2009-07-08 | 2009-07-08 | Method and device for improving operation comfort of excavator |
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| CN (1) | CN101619580A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061714A (en) * | 2010-12-03 | 2011-05-18 | 三一重机有限公司 | Control method for descending movable arm of excavator |
| CN102251547A (en) * | 2011-06-14 | 2011-11-23 | 三一重机有限公司 | Pilot control system of novel hydraulic excavator |
| CN102518156A (en) * | 2012-01-04 | 2012-06-27 | 江苏柳工机械有限公司 | System for accurately controlling the rotation of excavation end of loader digger |
| CN102888875A (en) * | 2012-09-11 | 2013-01-23 | 三一重机有限公司 | Running control loop and hydraulic excavator |
| CN103088854A (en) * | 2011-11-05 | 2013-05-08 | 靖江市长源液压机械有限公司 | Hydraulic circuit of damper valve |
| CN103438044A (en) * | 2013-09-12 | 2013-12-11 | 上海三一重机有限公司 | Structure for reducing switching frequency of high speed and low speed and machinery vehicle |
| CN103547741A (en) * | 2011-05-02 | 2014-01-29 | 神钢建设机械株式会社 | Rotation-type working machine |
| CN104846870A (en) * | 2015-05-25 | 2015-08-19 | 安徽宏昌机电装备制造有限公司 | Safety speed limiting device of working arm of excavating loader |
| CN105402184A (en) * | 2015-12-31 | 2016-03-16 | 柳州柳工挖掘机有限公司 | One-way throttle valve and pilot control oil way |
-
2009
- 2009-07-08 CN CN200910182318A patent/CN101619580A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102061714A (en) * | 2010-12-03 | 2011-05-18 | 三一重机有限公司 | Control method for descending movable arm of excavator |
| CN103547741B (en) * | 2011-05-02 | 2015-10-07 | 神钢建设机械株式会社 | Swinging engineering machinery |
| CN103547741A (en) * | 2011-05-02 | 2014-01-29 | 神钢建设机械株式会社 | Rotation-type working machine |
| CN102251547A (en) * | 2011-06-14 | 2011-11-23 | 三一重机有限公司 | Pilot control system of novel hydraulic excavator |
| CN102251547B (en) * | 2011-06-14 | 2013-04-24 | 三一重机有限公司 | Pilot control system of novel hydraulic excavator |
| CN103088854A (en) * | 2011-11-05 | 2013-05-08 | 靖江市长源液压机械有限公司 | Hydraulic circuit of damper valve |
| CN102518156A (en) * | 2012-01-04 | 2012-06-27 | 江苏柳工机械有限公司 | System for accurately controlling the rotation of excavation end of loader digger |
| CN102518156B (en) * | 2012-01-04 | 2014-04-16 | 江苏柳工机械有限公司 | System for accurately controlling the rotation of excavation end of loader digger |
| CN102888875A (en) * | 2012-09-11 | 2013-01-23 | 三一重机有限公司 | Running control loop and hydraulic excavator |
| CN102888875B (en) * | 2012-09-11 | 2015-10-28 | 三一重机有限公司 | Travelling control loop, hydraulic crawler excavator |
| CN103438044A (en) * | 2013-09-12 | 2013-12-11 | 上海三一重机有限公司 | Structure for reducing switching frequency of high speed and low speed and machinery vehicle |
| CN104846870A (en) * | 2015-05-25 | 2015-08-19 | 安徽宏昌机电装备制造有限公司 | Safety speed limiting device of working arm of excavating loader |
| CN105402184A (en) * | 2015-12-31 | 2016-03-16 | 柳州柳工挖掘机有限公司 | One-way throttle valve and pilot control oil way |
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Open date: 20100106 |