CN201447729U - Control device for improving walking operation stability of excavator - Google Patents
Control device for improving walking operation stability of excavator Download PDFInfo
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- CN201447729U CN201447729U CN2009200438218U CN200920043821U CN201447729U CN 201447729 U CN201447729 U CN 201447729U CN 2009200438218 U CN2009200438218 U CN 2009200438218U CN 200920043821 U CN200920043821 U CN 200920043821U CN 201447729 U CN201447729 U CN 201447729U
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- excavator
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Abstract
The utility model discloses a control device for improving walking operation stability of an excavator, which is characterized by comprising at least one temperature regulating valve wherein the temperature regulating valve is installed on one to four pilot oil ways for leftwards forward walking, leftwards backward walking, rightwards forward walking and rightwards backward walking between an excavator waking mechanism control valve core and a walking mechanism pilot valve; and the temperature regulating valve is open while returning oil, and the damping hole has a diameter of 0.7-1.3mm. The temperature regulating valve is installed on the pilot oil way, thereby regulating pilot return oil amount, realizing oil return throttling, improving excavator walking stability, avoiding hydraulic impact and vibration when in compound control action, preventing deflecting, and improving safety and comfort of operation.
Description
Technical field
The utility model relates to a kind of excavator oil circuit control device, is specifically related to a kind of control device that is used to improve excavator walking stable action, to guarantee the operating efficiency and the ride comfort of excavator.
Background technology
Hydraulic crawler excavator is a kind of common engineering machinery, has been widely used in industries such as building, water conservancy.It mainly partly is made up of equipment, slewing equipment, running gear and hydraulic control device etc.Described running gear is to finish the device that excavator moves, and is made up of walking mechanism, running motor, central swivel coupling and associated ping thereof.Main pump is connected with walking control main valve plug, and controls main valve plug to the walking mechanism fuel feeding by the walking pilot valve, drives the crawler belt action.Wherein, the walking pilot valve is divided into left front walking, right back walking, right front walking and right back walking four tunnel guide's oil circuits, is connected the direction of motion of control walking mechanism, the needs of adaptation excavator operation environment respectively with walking control main valve plug.
The excavator main pump is except being the running gear fuel feeding, also be slewing equipment, equipment fuel feeding simultaneously, when using on-site, sometimes need running gear and slewing equipment, equipment operation simultaneously, while walking during earthwork, can cause the shock and vibration of hydraulic system inside, not only can influence the operating efficiency of earthwork, also can freely not make driver's operation get up to have discomfort because of oil circuit.More seriously, when the machine band carries walking, (unload geotechnological condition toward truck), be prone to and impact and sideslip as full bucket revolution and walking in the place of some operating mode complexity, thus accidents caused.
Summary of the invention
The utility model purpose provides a kind of control device that improves excavator walking stable action, uses this control device, can make the pipeline fuel feeding more smooth, and it is more mild to handle startup, improves the safety and the comfortableness of operation.
For achieving the above object, the technical solution adopted in the utility model is: a kind of control device that improves excavator walking stable action, comprise at least one temperature control valve (TCV), described temperature control valve (TCV) is arranged on wherein 1～4 guide's oil circuit of the left front walking between excavator walking mechanism control spool and the walking mechanism pilot valve, left back walking, right front walking, right back walking, and described temperature control valve (TCV) is opening when withdrawing oil, and its damping hole aperture is 0.7mm～1.3mm.
Optimized technical scheme is that the damping hole aperture of described temperature control valve (TCV) is 0.9mm～1.1mm.
Above, the hydraulic crawler excavator running gear mainly is made up of walking mechanism, running motor, central swivel coupling and associated ping thereof, by main pump is the walking mechanism fuel feeding, the action of guide's oil circuit control walking mechanism, described guide's oil circuit comprises left front walking, right back walking, right front walking and right back walking four tunnel guide's oil circuits, control respectively the walking mechanism counterparty to walking manner, by the control of corresponding pilot valve.In the technique scheme, in 1～4 in four tunnel guide's oil circuits described temperature control valve (TCV) is set, just one or two or three or all on that temperature control valve (TCV) is set is all passable, this temperature control valve (TCV) is the class in the flow control valve, automatic valve according to the variation automatic regulating valve door aperture of controlled medium temperature, in pipeline, play temperature compensation function, regulate the flow of guide oil in the pipeline thus, restriction effect is not subjected to Temperature Influence, make the keying of walking mechanism control main valve plug softer, it is mild to handle startup, reduces to start the phase angle, the impact when avoiding the machine band to carry walking in the fluid pressure line and the sideslip problem of machine; Simultaneously, temperature control valve (TCV) is opening when withdrawing oil, promptly from the walking pilot valve when flowing to the guide oil of main valve plug, be in opening, otherwise then be in closure state, so just can play guide oil meter out effect, improve the stationarity of excavator walking action.
In the technique scheme, described temperature control valve (TCV) is the temperature control valve (TCV) with pressure compensation, makes restriction effect not be subjected to the influence of oil viscosity.
Because the technique scheme utilization, the advantage that the utility model compared with prior art has is:
1, since the utility model be arranged on guide's oil circuit between excavator walking mechanism control spool and the walking mechanism pilot valve, and when withdrawing oil opening, utilize temperature control valve (TCV) not regulate oil mass in the hydraulic pilot oil circuit under the situation of temperature influence, play effect to the guide oil meter out, thereby improve the stationarity of excavator walking action, reduce hydraulic shock and vibration in guide's oil circuit, the keying of control main valve plug is softer, handle and start gently the raising driver comfort;
2, by temperature control valve (TCV) is set, reduce to start the phase angle, impact and sideslip when having avoided the machine band to carry walking;
3, because temperature control valve (TCV) has pressure compensation, make restriction effect not be subjected to oil viscosity and Temperature Influence simultaneously, improve the compound moving stationarity of excavator, improve the machine operation performance, increase work efficiency.
Description of drawings
Fig. 1 is the structured flowchart of the utility model embodiment one;
Fig. 2 is the wherein hydraulic principle schematic block diagram on one tunnel guide's oil circuit of the utility model embodiment one.
Wherein: 1, walking mechanism pilot valve; 2, temperature control valve (TCV); 3, walking mechanism; 4, walking mechanism control main valve plug; 5, main pump; 6, motor.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: shown in Fig. 1,2, a kind of control device that improves excavator walking stable action, comprise 4 temperature control valve (TCV)s 2, described temperature control valve (TCV) 2 is arranged on 4 guide's oil circuits of the left front walking between excavator walking mechanism control main valve plug 4 and the walking mechanism pilot valve 1, left back walking, right front walking, right back walking, and described temperature control valve (TCV) 2 is opening when withdrawing oil, and its damping hole aperture is 0.9mm.As shown in Figure 1, it is that main pump 5 is walking mechanism control main valve plug 4 fuel feeding that motor 6 drives, main valve plug drives walking mechanism 3, control the action of main valve plug 4 again by walking mechanism pilot valve 1 control walking mechanism, and temperature control valve (TCV) 2 is set on the guide's oil circuit between main valve plug and the pilot valve, as temperature-compensating, regulate the backflow oil mass, make the keying of main valve plug softer, handle and start gently, reduced the startup phase angle simultaneously, the hydraulic shock of (having unloaded geotechnological condition toward truck) when having avoided the machine band to carry walking and the deviation phenomenon of machine as full bucket revolution and walking.
In the present embodiment, be example with common 20T excavator, through contrast experiment repeatedly, select the temperature control valve (TCV) 2 with pressure compensation for use, throttle diameter is φ 0.9, and flow is the temperature-compensating control valve best results of 20L/min.As shown in Figure 2, described temperature control valve (TCV) 2 is installed on guide's oil circuit input port side of walking mechanism control main valve plug 4, when mounted, note to keep temperature-compensating control valve 2 when flowing to the guide oil of main operation valve walking spool from walking mechanism pilot valve 1, be in opening, otherwise then be in closure state.Like this, just can play guide oil meter out effect, improve excavator walking stable action.
Claims (3)
1. control device that improves excavator walking stable action, it is characterized in that: comprise at least one temperature control valve (TCV), described temperature control valve (TCV) is arranged on wherein 1～4 guide's oil circuit of the left front walking between excavator walking mechanism control spool and the walking mechanism pilot valve, left back walking, right front walking, right back walking, and described temperature control valve (TCV) is opening when withdrawing oil, and its damping hole aperture is 0.7mm～1.3mm.
2. the control device of raising excavator walking stable action according to claim 1, it is characterized in that: the damping hole aperture of described temperature control valve (TCV) is 0.9mm～1.1mm.
3. the control device of raising excavator walking stable action according to claim 1, it is characterized in that: described temperature control valve (TCV) is the temperature control valve (TCV) with pressure compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200438218U CN201447729U (en) | 2009-05-13 | 2009-05-13 | Control device for improving walking operation stability of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200438218U CN201447729U (en) | 2009-05-13 | 2009-05-13 | Control device for improving walking operation stability of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201447729U true CN201447729U (en) | 2010-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200438218U Expired - Fee Related CN201447729U (en) | 2009-05-13 | 2009-05-13 | Control device for improving walking operation stability of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201447729U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251547A (en) * | 2011-06-14 | 2011-11-23 | 三一重机有限公司 | Pilot control system of novel hydraulic excavator |
| CN102587445A (en) * | 2012-03-20 | 2012-07-18 | 龙工（上海）桥箱有限公司 | Load sensing flow control hydraulic system with energy regeneration and conservation |
| CN113107912A (en) * | 2021-04-28 | 2021-07-13 | 三一重机有限公司 | Constant-speed walking control method and device and excavator |
-
2009
- 2009-05-13 CN CN2009200438218U patent/CN201447729U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102587445A (en) * | 2012-03-20 | 2012-07-18 | 龙工（上海）桥箱有限公司 | Load sensing flow control hydraulic system with energy regeneration and conservation |
| CN113107912A (en) * | 2021-04-28 | 2021-07-13 | 三一重机有限公司 | Constant-speed walking control method and device and excavator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100505 Termination date: 20140513 |