CN201874909U - Main pump flow distribution valve used in combined operations and control of large-scale hydraulic construction machinery - Google Patents
Main pump flow distribution valve used in combined operations and control of large-scale hydraulic construction machinery Download PDFInfo
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- CN201874909U CN201874909U CN2010205667875U CN201020566787U CN201874909U CN 201874909 U CN201874909 U CN 201874909U CN 2010205667875 U CN2010205667875 U CN 2010205667875U CN 201020566787 U CN201020566787 U CN 201020566787U CN 201874909 U CN201874909 U CN 201874909U
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- valve
- main pump
- pump flow
- delivery outlet
- flow distribution
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Abstract
The utility model discloses a main pump flow distribution valve used in combined operations and control of large-scale hydraulic construction machinery. The main pump flow distribution valve comprises a valve body, wherein an inlet and an output port A which are communicated are arranged on the valve body; the inlet is connected with the valve through another oil circuit; an oil circuit is arranged on the valve and connected with an output port B arranged on the valve body; the output port A is connected with a load-sensitive multi-way valve, and a signal output port of the load-sensitive multi-way valve is connected with the hydraulic fluid port A arranged on the valve; the hydraulic fluid port A is connected with the left side of the valve through a throttling hole; an overflow valve A and an overflow valve B are connected with the right side of the throttling hole; an on-off valve is arranged on the overflow valve B; and one end of the on-off valve is connected with a hydraulic fluid port B arranged on the valve, and the other end of the on-off valve is communicated with a pipeline arranged between the throttling hole and the overflow valve A. Due to the adoption of the main pump flow distribution valve, the number of pumps in a multi-pump control system is lessened when less combined operations are performed, so that the main pump flow distribution valve saves a large amount of cost and the arrangement space on the construction machinery, simplifies the hydraulic system, and fulfills the requirements of energy conservation and emission reduction at the same time; and the main pump flow distribution valve has the advantages of compact structure, small volume, and simplification of manufacture and installation.
Description
Technical field
The utility model relates to a kind of hydraulic control valve, relates in particular to the hydraulic control valve of control composite move in the large hydraulic engineering machinery such as excavator, crawler crane, rotary drilling rig.
Background technique
With the rotary drilling rig is example, and for the pump configuration of rotary drilling rig, producer uses self-contained pump to supply with independent hydraulically controlled loop mostly.This mentality of designing causes rotary drilling rig mostly to be 4 pumps or 5 pumps, cause certain trouble for the power taking of rotary drilling rig motor, and occupied the arrangement space of getting on the bus, do not meet the requirement of current energy-saving and emission-reduction, the complex structure of simultaneity factor, maintaining are extremely inconvenient.
The model utility content
The utility model purpose is to provide the main pump flow divider valve of using in a kind of large hydraulic engineering machinery composite move and the control, adopt a main pump to pass through pressure oil, realize the exercises load of large hydraulic engineering machinery by the distribution of main pump flow divider valve, dispense service pump, reach the requirement of energy-saving and emission-reduction, have compact structure simultaneously, do not have pipeization design, little, the easy production and assembly of volume and install and use.
The technological scheme that realizes the utility model purpose is:
The main pump flow divider valve of using in a kind of large hydraulic engineering machinery composite move and the control, comprise valve body, described valve body is provided with pressure oil import and pressure oil delivery outlet A, described import and delivery outlet A communicate, it is characterized in that: described import links to each other with valve by another oil circuit, there being oil circuit to link to each other with delivery outlet B on the described valve body on the described valve, when delivery outlet A is in closed condition, pressure oil promotes the spool of valve, with import and delivery outlet B UNICOM;
Be connected with one road load sensing multi-way valve at delivery outlet A, having signal output to link to each other with hydraulic fluid port A on the described valve body on the described load sensing multi-way valve, described hydraulic fluid port A links to each other by the left side of throttle orifice and described valve;
Be connected with relief valve A on the right side of described throttle orifice, on described relief valve A, be connected with relief valve B, described relief valve B is provided with on-off valve, one end of described on-off valve links to each other with hydraulic fluid port B on the described valve body, and the pipeline between the other end of described on-off valve and described throttle orifice and the relief valve A communicates.
The oil pressure relief of described relief valve B is set and is lower than relief valve A.
The utility model compared with prior art has following advantage:
The application of this valve, the quantity of the pump when on satisfying the basis of actual conditions, having solved the less composite move of multi-pump control system, can save great amount of cost from the angle of economy, also saved simultaneously the arrangement space of getting on the bus, simplified hydraulic system, reach the requirement of energy-saving and emission-reduction, have compact structure, do not have pipeization design, little, the easy production and assembly of volume and install and use.
Description of drawings
Fig. 1 is the structural representation of main pump flow divider valve described in the utility model
Embodiment
Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model, and all technological schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by every claim.
As can be seen from Figure 1, the main pump flow divider valve of using in a kind of large hydraulic engineering machinery composite move and the control, comprise valve body 12, described valve body 12 is provided with pressure oil import 11 and pressure oil delivery outlet A7, described import 11 and delivery outlet A7 communicate, it is characterized in that: described import 11 links to each other with valve 5 by another oil circuit, there is being oil circuit to link to each other on the described valve 5 with delivery outlet B8 on the described valve body 12, when delivery outlet A7 is in closed condition, pressure oil promotes the spool of valve 5, with import 11 and delivery outlet B8 UNICOM;
Be connected with one road load sensing multi-way valve at delivery outlet A7, having signal output to link to each other with hydraulic fluid port A9 on the described valve body 12 on the described load sensing multi-way valve, described hydraulic fluid port A9 links to each other by the left side of throttle orifice 6 and described valve 5;
Be connected with relief valve A3 on the right side of described throttle orifice 6, on described relief valve A3, be connected with relief valve B2, described relief valve B2 is provided with on-off valve 4, one end of described on-off valve 4 links to each other with hydraulic fluid port B10 on the described valve body 12, and the pipeline between the other end of described on-off valve 4 and described throttle orifice 6 and the relief valve A3 communicates.
The working principle of this distributing valve is to provide pressure oil by main pump 1, enters the main pump flow divider valve through import 11.Hydraulic oil is divided into two-way in valve body, the one tunnel without any control directly by delivery outlet A7 output, other one the tunnel through valve 5, is exported by delivery outlet B8.When delivery outlet A7 connection valve was in closed condition, pressure oil promoted valve 5 spools, and compression valve in-core spring is with import 11 and delivery outlet B8 UNICOM.
What be connected with delivery outlet A7 is one road load sensing multi-way valve, and the LS signal output is arranged in the valve, and this delivery outlet is connected with hydraulic fluid port A9, as the load feedback signal mouth.Load sensing multi-way valve is opened, during the control load action, main pump 1 output hydraulic oil can be respectively from delivery outlet A7 output, and pressure oil output is to hydraulic fluid port A9 simultaneously because load sensing multi-way valve LS mouth is in the load action, and pressure oil can act on valve 5 spool left ends by throttle orifice 6, valve 5 cuts out, at this moment, main pump 1 pressure oil is supplied with delivery outlet A7, before not reaching relief valve A3 setting oil pressure relief, the pressure oil pressure of main pump 1 output is regulated, by main relief valve control on the load sensing multi-way valve.
When delivery outlet A7 delivery pressure oil pressure surpassed relief valve A3 setting pressure, relief valve A3 opened, and caused throttle orifice 6 right-hand member pressure to reduce, and this moment, two ends, the valve 5 spool left and right sides formed pressure reduction, and valve core movement releases the part high pressure oil through delivery outlet B8, reach balance.
At delivery outlet A7, when delivery outlet load that B8 supplies is moved simultaneously, pressure oil preferentially exports load to through delivery outlet A7, and delivery outlet B8 begins to the load fuel feeding after satisfying delivery outlet A7 to connect the load action.
Relief valve B2 and relief valve A3 can play same function, different is to control the break-make of on-off valve 4 by the pressure signal of control port B10 input by relief valve B2 is provided with different pressures, to obtain the setting of different pressures point, the oil pressure relief of relief valve B2 is set will be lower than relief valve A3.
Claims (2)
1. the main pump flow divider valve of using in large hydraulic engineering machinery composite move and the control, comprise valve body (12), described valve body (12) is provided with pressure oil import (11) and pressure oil delivery outlet A (7), described import (11) and delivery outlet A (7) communicate, it is characterized in that: described import (11) links to each other with valve (5) by another oil circuit, there is being oil circuit to link to each other on the described valve (5) with delivery outlet B (8) on the described valve body (12), as delivery outlet A (7) when being in closed condition, pressure oil promotes the spool of valve (5), with import (11) and delivery outlet B (8) UNICOM;
Be connected with one road load sensing multi-way valve at delivery outlet A (7), having signal output to link to each other with hydraulic fluid port A (9) on the described valve body (12) on the described load sensing multi-way valve, described hydraulic fluid port A (9) links to each other by the left side of throttle orifice (6) and described valve (5);
Be connected with relief valve A (3) on the right side of described throttle orifice (6), on described relief valve A (3), be connected with relief valve B (2), described relief valve B (2) is provided with on-off valve (4), one end of described on-off valve (4) links to each other with hydraulic fluid port B (10) on the described valve body (12), and the pipeline between the other end of described on-off valve (4) and described throttle orifice (6) and the relief valve A (3) communicates.
2. the main pump flow divider valve of using in a kind of large hydraulic engineering machinery composite move according to claim 1 and the control is characterized in that: the oil pressure relief of relief valve B (2) is set will be lower than relief valve A (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205667875U CN201874909U (en) | 2010-10-18 | 2010-10-18 | Main pump flow distribution valve used in combined operations and control of large-scale hydraulic construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205667875U CN201874909U (en) | 2010-10-18 | 2010-10-18 | Main pump flow distribution valve used in combined operations and control of large-scale hydraulic construction machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874909U true CN201874909U (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205667875U Expired - Fee Related CN201874909U (en) | 2010-10-18 | 2010-10-18 | Main pump flow distribution valve used in combined operations and control of large-scale hydraulic construction machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240366A (en) * | 2018-01-25 | 2018-07-03 | 陈艳艳 | A kind of flow divider valve for excavator hydraulic pressure accessory |
-
2010
- 2010-10-18 CN CN2010205667875U patent/CN201874909U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240366A (en) * | 2018-01-25 | 2018-07-03 | 陈艳艳 | A kind of flow divider valve for excavator hydraulic pressure accessory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Shangqi Group Co., Ltd. Assignor: Yin Hui Contract record no.: 2011320001168 Denomination of utility model: Main pump flow distribution valve used in combined operations and control of large-scale hydraulic construction machinery Granted publication date: 20110622 License type: Exclusive License Record date: 20111207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20181018 |