CN200958502Y - Integrated multi-path change valve of loader - Google Patents
Integrated multi-path change valve of loader Download PDFInfo
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- CN200958502Y CN200958502Y CN 200620076480 CN200620076480U CN200958502Y CN 200958502 Y CN200958502 Y CN 200958502Y CN 200620076480 CN200620076480 CN 200620076480 CN 200620076480 U CN200620076480 U CN 200620076480U CN 200958502 Y CN200958502 Y CN 200958502Y
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Abstract
The utility model discloses an integral multi-channel change valve for the loading machine, which comprises a valve body, various oil channel arranged in the valve body as well as a safety valve, a turning single-way valve and a dynamic arm arranged in line with the oil channel. The turning level and the valve and the oil channel provide the three-position and four-way function. The dynamic arm and the oil channel provide the four-position and four-way function. The single-way valve is used to substitute the original bilateral guide hydraulic control lock, thereby reducing the non-work load of the dynamic arm and improving the suspension of the dynamic lever to the loading machine to control the reliability. The solid valve spool is adopted to avoid the chucking caused by the high-pressure deformity of the valve rod and at the same time the defect of the leverage force needed for opening the lock is avoided and the operational force is reduced. The double-way sealing is adopted to avoid the hydraulic pressure oil leakage, thereby improving the environmental protection ability.
Description
Technical field
The utility model relates to a kind of selector valve, relates in particular to a kind of loader integral multi-way reversing valve.
Background technique
Known loader oil hydraulic cylinder hydraulicdirectional control valve has split type selector valve and integrated type selector valve, and along with improving constantly of casting, processing technology, integral multi-way reversing valve is applied in the middle of the loader hydraulic control system just more and more widely.January in 2005, invention disclosed patent on the 5th CN1560480A promptly disclosed a kind of loader integral manual multi-path reversing valve, this multiple directional control valve is the rotating bucket selector valve, swing arm selector valve and overload valve are integrated in a valve body the inside, thereby realize the lifting of loading arm oil cylinder and the lifting centralized control of rotary ink tank, two oil circuits that wherein lead to rotary ink tank require multiple directional control valve to provide a kind of 3-position 4-way to add the function of an overload protection, and two oil circuits that lead to boom cylinder require multiple directional control valve to provide a kind of four four-ways to add the function of an overload protection, with respect to selector valve technology more early, the main improvement of this invention has two parts, the one, original main valve body and overload valve body are designed to integrated type, stop the drawback of hydraulic oil seepage between long-standing main valve body of old-fashioned selector valve and the overload valve body junction plane; The 2nd, substitute original one-way valve of being located at semaphore and rotating bucket stem valve in-core with two-way guide's hydraulic control lock, and then reduced the deflection after the loading arm lifting.Because the existence of two-way guide's hydraulic control lock also brings the following problem when bringing benefit:
1, falling the arm chamber needs an enough pressure to be used for opening guide's spool of two-way guide's hydraulic control lock, and this pressure passes through the reaction force acts of piston in oil cylinder master active chamber, increases the inoperative load of boom cylinder;
2, owing to being set directly at, secondary guide valve core rises between arm master chamber and the right oil-return groove, broken away from semaphore fully to stopping control in the loading arm, too high pressure reduction can reduce the working life of secondary guide valve core greatly, in case and secondary guide valve core leakage of oil, high pressure oil will be directly along right oil-return groove oil return, and swing arm will sink because of " out of control ";
3, the unlatching of secondary guide valve core must push lever by semaphore and could move, and causes the semaphore steering force to increase, and then has increased operating personnel's labor intensity;
4, because two-way guide's hydraulic control lock sealing part is too many, hydraulic fluid leak takes place easily.
Summary of the invention
The purpose of this utility model provides and a kind ofly is easy to handle, the loader integral multi-way reversing valve of reliable operation, good sealing effect.
The technical solution of the utility model is such: a kind of loader integral multi-way reversing valve, comprise the integrated type valve body, be provided with the in-line that hydraulic oil is passed through in the valve body, left side oil-return groove, right oil-return groove, the secondary in-line, middle oil-return groove, rise the bucket in-line, the bucket in-line falls, rise the bucket chamber, the bucket chamber falls, rise the arm in-line, rise the arm chamber, the arm chamber falls, between described in-line and left oil-return groove, be provided with safety valve, between described in-line and liter bucket in-line, be provided with the rotating bucket one-way valve, one rotating bucket bar passes valve body successively, left side oil-return groove, the bucket chamber falls, the bucket in-line falls, the secondary in-line, in-line, rise the bucket in-line, rise the bucket chamber, right oil-return groove, valve body, and described rotating bucket bar is provided with and valve body, each oil circuit that is passed is suitable and form the step of 3-position 4-way function, one semaphore passes valve body successively, left side oil-return groove, the arm chamber falls, the secondary in-line, middle oil-return groove, rise the arm in-line, rise the arm chamber, right oil-return groove, valve body, and described semaphore is provided with and valve body, each oil circuit that is passed is suitable and form the step of four four-way functions, described secondary in-line and rising is provided with between the arm in-line and makes hydraulic oil flow to the one-way valve that rises arm in-line one-way flow from the secondary in-line, described one-way valve comprises spool, valve seat, be located at the check valve spring between described spool and the valve seat, described valve seat is fixedly arranged on the valve body.
Above-mentioned loader integral multi-way reversing valve, described one-way valve are solid parts.
Above-mentioned loader integral multi-way reversing valve is provided with seal ring between described valve seat and the valve body.
Above-mentioned loader integral multi-way reversing valve, vertical two ends of described rotating bucket bar and valve body mating part respectively are provided with the above seal ring of twice.
Above-mentioned loader integral multi-way reversing valve, vertical two ends of described semaphore and valve body mating part respectively are provided with the above seal ring of twice.
Above-mentioned loader integral multi-way reversing valve, the vertical side end of described rotating bucket bar is provided with the spring reset assembly.
Above-mentioned loader integral multi-way reversing valve, the vertical side end of described semaphore is provided with the steel ball positioning component.
Above-mentioned loader integral multi-way reversing valve, described rise to be provided with between bucket chamber and the right oil-return groove rise the bucket overload valve, described fall to be provided with between bucket chamber and the left oil-return groove bucket overload valve falls.
The loader integral multi-way reversing valve that the utility model provides substitutes original two-way guide's hydraulic control lock by one-way valve, makes loader when " falling arm ", need not carry out " unblanking " action, reduces the inoperative load of boom cylinder.When being in " in stop " at loader, rising the complete passive armed lever in arm chamber and seal, do not have other possible leakage link, improve the reliability of semaphore " in stop " control of loading arm.When solid stem structure avoids the distortion of valve rod high pressure to cause chucking, also get rid of the defective of " unblanking " required lever, alleviated steering force.One-way valve simplest and dependable structure has only 1 static seal point between its valve seat and the valve body, has reduced sealing part, adds the sealing configuration that rotating bucket bar and semaphore two ends " bilayer " are above, can effectively avoid the outside seepage of hydraulic oil.
Description of drawings
Fig. 1 is the utility model embodiment's a front view;
Fig. 2 is the right elevation of Fig. 1;
Fig. 3 is a B-B sectional view among Fig. 2;
Fig. 4 is a D-D sectional view among Fig. 1;
Fig. 5 is an E-E sectional view among Fig. 1;
Fig. 6 is a C-C sectional view among Fig. 1;
Fig. 7 is an A-A sectional view among Fig. 2;
Fig. 8 is the hydraulic system principle figure of present embodiment;
Embodiment
Embodiment is at the situation that overload valve is not set in some loader rotary ink tank, so the integrated overload valve parts that are provided with on this valve body.Embodiment is a kind of loader integral multi-way reversing valve, referring to figs. 1 to Fig. 8, each toponym of this valve is as follows: safety valve 1, left side oil-return groove 2, in-line 3, rotating bucket one-way valve 4, rise bucket in-line 5, check valve spring 6, plug 7, rise bucket chamber 8, right oil-return groove 9, rotating bucket bar 10, spring reset assembly 11, steel ball positioning component 12, semaphore 13, rise arm chamber 14, rise arm in-line 15, middle oil-return groove 16, secondary in-line 17, arm chamber 18 falls, bucket in-line 19 falls, bucket chamber 20 falls, valve body 21, bucket overload valve 22 falls, rise bucket overload valve 24, bridge 23, one-way valve 25.
This valve mainly contains: safety valve 1, rotating bucket one-way valve 4, check valve spring 6, plug 7, rotating bucket bar 10, spring reset assembly 11, steel ball positioning component 12, semaphore 13, valve body 21, one-way valve 25, check valve spring 253, fall bucket overload valve 22, rise 13 parts such as bucket overload valve 24.
With reference to figure 6, Fig. 7; safety valve 1 is located between the in-line 3 and left oil-return groove 2 of valve body 21, and when the pressure in the in-line 3 surpassed the safety valve setting value, safety valve 1 was opened automatically; make the high pressure oil in the in-line 3 flow back to fuel tank, realize the safety protection function of system through left oil-return groove 2.At the in-line 3 of valve body 21 and rise between the bucket in-line 5 rotating bucket one-way valve 4 is set.With reference to figure 4, rise bucket in-line 5 and be communicated with by bridge 23 with falling between the bucket in-line 19, rise bucket or fall one-way valve shared when struggling against operation so rotating bucket one-way valve 4 is loaders.Rise simultaneously to be provided with between bucket chamber 8 and the right oil-return groove 9 and rise bucket overload valve 24, described fall to be provided with between bucket chamber 20 and the left oil-return groove 2 bucket overload valve 22 falls, by the working pressure of these two overload valves protection oil cylinders unlikely limit.With reference to figure 2, Fig. 7, rotating bucket bar 10 and semaphore 13 lay respectively at the centre and the bottom of valve body, all are solid construction.With reference to figure 3, Fig. 7, at secondary in-line 17 and rise to be provided with between the arm in-line 15 and make hydraulic oil flow to the one-way valve 25 that rises arm in-line 15 one-way flow from secondary in-line 17, described one-way valve 25 comprises spool 251, valve seat 252, be located at the check valve spring 253 between described spool 251 and the valve seat 252, described valve seat 252 is fixedly arranged on the valve body 21, and described spool 251 is solid parts, because this one-way valve 25 can only make the hydraulic oil one-way flow, thereby high pressure oil flows backwards when preventing the loading arm lifting, owing to be relative static, therefore the mating part at valve seat 252 and valve body is provided with sealing 28 between valve seat 252 and the valve body 21.
With reference to figure 7, Fig. 8, the function of three-position four-way valve 51 in rotating bucket bar 10 execution graphs 8, during work, handle the control that rotating bucket bar 10 realizes the bucket that rises---neutrality---of loader rotary ink tank is fallen three functions of bucket, be positioned at right position-meta-position, a left side corresponding to three-position four-way valve 51 spools; The function of four-way valve 52 in semaphore 13 execution graphs 8, during work,---control of unsteady four functions that neutrality---is fallen arm---is positioned at right position-meta-the first from left position-the second from left position corresponding to four-way valve 52 spools to handle the arm that rises that semaphore 13 is realized the loading arm oil cylinder.
With reference to figure 7, this moment, rotating bucket bar 10 and semaphore 13 all were in the neutral position, and working oil is entered by in-line 3, flows back to fuel tank through secondary in-line 17, middle oil-return groove 16.Fall bucket chamber 20 this moment, rise bucket chamber 8 and fall arm chamber 18, rise arm chamber 14 and sealed by rotating bucket bar 10 and semaphore 13 respectively, loading shovel and greatly arm be in " in stop " state.
With reference to figure 7, when rotating bucket bar 10 is moved to the left commutation position by the neutral position, be cut off between in-line 3 and the secondary in-line 17, rise bucket in-line 5 and rise between the bucket chamber 8 and be connected, and fall between bucket chamber 20 and the left oil-return groove 2 and be connected, hydraulic oil in the in-line 3 is opened rotating bucket one-way valve 4 and is entered a liter bucket in-line 5 successively, rises bucket chamber 8, simultaneously, falling the hydraulic oil of bucket in the chamber 20 enters left oil-return groove 2 and flows back to fuel tank, loader is realized " rising bucket " function, and three-position four-way valve 51 spools are positioned at right position in the corresponding diagram 8.When rotating bucket bar 10 moves right to commutation position by the neutral position, be cut off between in-line 3 and the secondary in-line 17, fall bucket in-line 19 and fall between the bucket chamber 20 and be connected, and rise between bucket chamber 8 and the right oil-return groove 9 and be connected, hydraulic oil in the in-line 3 is opened rotating bucket one-way valve 4 and is entered a liter bucket in-line 5 successively, bridge 23 (with reference to figure 4), fall the bucket in-line 19 enter fall the bucket chamber 20, simultaneously, hydraulic oil in the liter bucket chamber 8 enters right oil-return groove 9 and flows back to fuel tank, loader is realized " falling bucket " function, three-position four-way valve 51 spools are positioned at position, a left side in the corresponding diagram 8, be provided with spring reset assembly 11 between the right-hand member of described rotating bucket bar 10 and the valve body 21, when rotating bucket bar 10 is positioned at the neutral position, the longitudinal force that spring reset assembly 11 puts on the rotating bucket bar 10 approximates zero, when rotating bucket bar 10 is mobile to the left or to the right, all be subjected to the pretightening force that resets of spring reset assembly 11, handle with convenient, and two anastomosis parts of described rotating bucket bar 10 vertical two ends and valve body are provided with two seals circle 26 and seal ring 27, thereby improve the sealability between valve body and the valve rod.
With reference to figure 7, Fig. 3, make rotating bucket bar 10 be in the neutral position, three-position four-way valve 51 spools are positioned at meta in the corresponding diagram 8.When semaphore 13 is moved to the left commutation position by the neutral position, be cut off between secondary in-line 17 and the middle oil-return groove 16, rise arm in-line 15 and rise between the arm chamber 14 and be connected, and fall between arm chamber 18 and the left oil-return groove 2 and be connected, hydraulic oil in the in-line 3 is through secondary in-line 17 and continue to open one-way valve 25 (with reference to figure 3), enters and rise arm in-line 15, rises arm chamber 14 successively; Simultaneously, fall hydraulic oil in the arm chamber 18 and enter left oil-return groove 2 and flow back to fuel tank, loader is realized " rising arm " function, is positioned at right position corresponding to 52 spools of four-way valve among Fig. 8.When semaphore 13 moves right to first commutation position by the neutral position, be cut off between secondary in-line 17 and the middle oil-return groove 16, secondary in-line 17 and falling between the arm chamber 18 is connected, rise between arm chamber 14 and the right oil-return groove 9 and also be communicated with, the hydraulic oil in the secondary in-line 17 enters and falls arm chamber 18; Simultaneously, rise hydraulic oil in the arm chamber 14 and enter right oil-return groove 9 and flow back to fuel tank, carrier aircraft realizes " falling arm " function, is positioned at the first from left position corresponding to 52 spools of four-way valve among Fig. 8.When (with reference to figure 7) moves right to second commutation position when semaphore 13, arm chamber 18 falls, be connected between secondary in-line 17 and middle oil-return groove 16 threes, promptly fall arm chamber 18 is communicated with fuel tank and in-line comprehensively, and rising arm chamber 14 is communicated with right oil-return groove 9, hydraulic oil in the liter arm chamber 14 enters right oil-return groove 9 and flows back to fuel tank, loader is realized " floating " function, be positioned at the second from left position corresponding to 52 spools of four-way valve among Fig. 8, also be provided with steel ball positioning component 12 between described semaphore 13 vertical right sides and the valve body, be used for semaphore 13 is positioned at neutrality, rise arm, arm falls, each position of function of floating carry out relative positioning, this part is not launched statement here as a kind of known configurations.And two anastomosis parts of described semaphore 13 vertical two ends and valve body 21 are provided with two seals circle 29 and seal ring 30, thereby improve the sealability between valve body and the valve rod.
Because secondary in-line 17 all is cut off during rotating bucket bar about 10 commutation, at this moment swing arm loses hydraulic oil source and can't lifting, so this kind integral multi-way valve is the cascaded structure form.
(with reference to figure 3) in the present embodiment substitutes original two-way guide's hydraulic control lock by one-way valve 25, makes loader when " falling arm ", need not carry out " unblanking " action, reduces the inoperative load of boom cylinder.When being in " in stop " at loader, rising the complete passive armed lever in arm chamber and seal, do not have other possible leakage link, improve the reliability of semaphore " in stop " control of loading arm.When the one-way valve spool 251 of solid construction can avoid the distortion of valve rod high pressure to cause chucking, also get rid of the defective of " unblanking " required lever, alleviated steering force.Have only a static seal point between one-way valve and the valve body, reduced sealing part, add rotating bucket bar two ends " bilayer " sealing configuration, avoided outer seepage, improved the feature of environmental protection.Rise the bucket overload valve, fall the bucket overload valve and guarantee that effectively oil cylinder is operated under the oil pressure of permission.
Claims (8)
1, a kind of loader integral multi-way reversing valve, comprise the integrated type valve body, be provided with the in-line that hydraulic oil is passed through in the valve body, left side oil-return groove, right oil-return groove, the secondary in-line, middle oil-return groove, rise the bucket in-line, the bucket in-line falls, rise the bucket chamber, the bucket chamber falls, rise the arm in-line, rise the arm chamber, the arm chamber falls, between described in-line and left oil-return groove, be provided with safety valve, between described in-line and liter bucket in-line, be provided with the rotating bucket one-way valve, one rotating bucket bar passes valve body successively, left side oil-return groove, the bucket chamber falls, the bucket in-line falls, the secondary in-line, in-line, rise the bucket in-line, rise the bucket chamber, right oil-return groove, valve body, and described rotating bucket bar is provided with and valve body, each oil circuit that is passed is suitable and form the step of 3-position 4-way function, one semaphore passes valve body successively, left side oil-return groove, the arm chamber falls, the secondary in-line, middle oil-return groove, rise the arm in-line, rise the arm chamber, right oil-return groove, valve body, and described semaphore is provided with and valve body, each oil circuit that is passed is suitable and form the step of four four-way functions, it is characterized in that described secondary in-line and rise to be provided with between the arm in-line making hydraulic oil flow to the one-way valve that rises arm in-line one-way flow from the secondary in-line, described one-way valve comprises spool, valve seat, be located at the check valve spring between described spool and the valve seat, described valve seat is fixedly arranged on the valve body.
2, loader integral multi-way reversing valve as claimed in claim 1 is characterized in that described one-way valve is a solid parts.
3, loader integral multi-way reversing valve as claimed in claim 1 is characterized in that being provided with seal ring between described valve seat and the valve body.
4, loader integral multi-way reversing valve as claimed in claim 1 is characterized in that vertical two ends of described rotating bucket bar and valve body mating part respectively are provided with the above seal ring of twice.
5, loader integral multi-way reversing valve as claimed in claim 1 is characterized in that vertical two ends of described semaphore and valve body mating part respectively are provided with the above seal ring of twice.
6, loader integral multi-way reversing valve as claimed in claim 1 is characterized in that the vertical side end of described rotating bucket bar is provided with the spring reset assembly.
7, loader integral multi-way reversing valve as claimed in claim 1 is characterized in that the vertical side end of described semaphore is provided with the steel ball positioning component.
8, loader integral multi-way reversing valve as claimed in claim 1, it is characterized in that described rise to be provided with between bucket chamber and the right oil-return groove rise the bucket overload valve, described fall to be provided with between bucket chamber and the left oil-return groove bucket overload valve falls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620076480 CN200958502Y (en) | 2006-09-09 | 2006-09-09 | Integrated multi-path change valve of loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620076480 CN200958502Y (en) | 2006-09-09 | 2006-09-09 | Integrated multi-path change valve of loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200958502Y true CN200958502Y (en) | 2007-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620076480 Expired - Fee Related CN200958502Y (en) | 2006-09-09 | 2006-09-09 | Integrated multi-path change valve of loader |
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| CN (1) | CN200958502Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011760A (en) * | 2010-12-08 | 2011-04-13 | 成都金海液压机具制造有限责任公司 | Novel integrated in-series multitandem valve assembly |
| CN101592171B (en) * | 2009-06-19 | 2011-07-27 | 济南液压泵有限责任公司 | Integral manual multi-path reversing valve |
| CN101676495B (en) * | 2008-08-21 | 2012-03-28 | 沃尔沃建造设备控股（瑞典）有限公司 | Hydraulic system for construction equipment |
| CN104912864A (en) * | 2015-06-04 | 2015-09-16 | 许昌市恒基机械有限公司 | Pressure-adjustable reversing valve and steel bar bender |
| CN111895135A (en) * | 2020-09-07 | 2020-11-06 | 徐州徐工液压件有限公司 | Oil port switching structure of two-position five-way valve |
-
2006
- 2006-09-09 CN CN 200620076480 patent/CN200958502Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101676495B (en) * | 2008-08-21 | 2012-03-28 | 沃尔沃建造设备控股（瑞典）有限公司 | Hydraulic system for construction equipment |
| CN101592171B (en) * | 2009-06-19 | 2011-07-27 | 济南液压泵有限责任公司 | Integral manual multi-path reversing valve |
| CN102011760A (en) * | 2010-12-08 | 2011-04-13 | 成都金海液压机具制造有限责任公司 | Novel integrated in-series multitandem valve assembly |
| CN104912864A (en) * | 2015-06-04 | 2015-09-16 | 许昌市恒基机械有限公司 | Pressure-adjustable reversing valve and steel bar bender |
| CN111895135A (en) * | 2020-09-07 | 2020-11-06 | 徐州徐工液压件有限公司 | Oil port switching structure of two-position five-way valve |
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| Date | Code | Title | Description |
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| 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: 20071010 Termination date: 20090909 |