CN109882468A - A kind of used with tractor is automatically controlled to promote preferential pile-up valve - Google Patents
A kind of used with tractor is automatically controlled to promote preferential pile-up valve Download PDFInfo
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- CN109882468A CN109882468A CN201910291527.7A CN201910291527A CN109882468A CN 109882468 A CN109882468 A CN 109882468A CN 201910291527 A CN201910291527 A CN 201910291527A CN 109882468 A CN109882468 A CN 109882468A
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- valve
- pressure
- automatically controlled
- valve block
- preferential
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- 230000001737 promoting effect Effects 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims description 11
- 230000008676 import Effects 0.000 claims description 7
- 239000002828 fuel tank Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
A kind of used with tractor is automatically controlled to promote preferential pile-up valve, comprising: automatically controlled promotion valve block, preferential valve block；Wherein automatically controlled promotion valve block is by pressure-compensated valve, poppet, lowering valve, check valve；Preferential valve block is made of lifting system safety valve, pressure-gradient control valve and oil cylinder safety valve；It is characterized in that: automatically controlled promotion valve block is superimposed connection with preferential valve block；Pressure-compensated valve, poppet, lowering valve, check valve are integrated in automatically controlled promotion valve block, are connected to by the automatically controlled internal galleries for promoting valve block；Lifting system safety valve, pressure-gradient control valve, oil cylinder safety valve are integrated in preferential valve block, are connected to by the internal galleries of preferential valve block.The automatically controlled preferential pile-up valve of promotion, select the automatically controlled promotion valve block with pressure feedback signal, the superposition preferential valve block integrated by pressure-gradient control valve and safety valve, it is compact-sized, arrangement is convenient, system pipeline is simple, lifting system perfect in shape and function, reliable performance, and in the case where meeting equipment promotion preferentially, hydraulic output can be worked at the same time with equipment promotion.
Description
Technical field
The invention belongs to tractor field, it is related to a kind of valve more particularly to a kind of automatically controlled promotion of used with tractor is preferential integrated
Valve.
Background technique
Currently, tractor connection equipment type is also constantly increasing with the quick raising of China's tractor technology, use
It is more more and more intense that family promotes the requirement worked at the same time with hydraulic output to tractor equipment, and domestic large power wheel mostly is automatically controlled
Tractor is promoted, automatically controlled poppet and multi-way valve are connected in hydraulic system, and hydraulic output cannot be worked at the same time with equipment promotion,
To make to fill this kind of automatically controlled poppet tractor can matched equipment type it is limited.
The utility model patent of the authorization of State Intellectual Property Office on 08 03rd, 2018 " used with tractor multichannel valve assembly and drags
Machine drawing ", number of patent application 2017219262043, patent application day are on December 29th, 2017, and notification number is
CN207687088U.It is closer to present patent application content.The patent is related to tractor technical field, provides one kind and drags
Machine drawing multi-way valve increases a flow pressure-gradient control valve on the oil inlet connection of multi-way valve, and flow pressure-gradient control valve was forced the oil liquid same time-division
The a piece of hydraulic delivery valve connection of dispensing and promotion connection realize that equipment is promoted and equipment control with synchronous.But the patent cannot be applied
On automatically controlled promotion tractor.
Therefore, it is preferentially integrated it is necessary to provide a kind of automatically controlled promoted of compact-sized, safe and reliable used with tractor
Valve, in the case where guaranteeing to promote preferential, hydraulic output can be worked at the same time with automatically controlled promotion, met user and more and more used
Demand.
Summary of the invention
The purpose of the present invention is to provide a kind of preferential collection of the automatically controlled promotion of compact-sized, safe and reliable used with tractor
At valve, keep automatically controlled poppet and multi-way valve in parallel, in the case where guaranteeing to promote preferential, hydraulic output can be same with equipment promotion
When work.
The technical scheme is that a kind of used with tractor is automatically controlled to promote preferential pile-up valve, comprising: automatically controlled promotion valve block,
Preferential valve block；Wherein automatically controlled promotion valve block is made of pressure-compensated valve, poppet, lowering valve, check valve, and preferential valve block is by being promoted
System safety valve, pressure-gradient control valve and oil cylinder safety valve composition；Automatically controlled promotion valve block is superimposed connection with preferential valve block；Pressure-compensated valve,
Poppet, lowering valve, check valve are integrated in automatically controlled promotion valve block, are interconnected by the automatically controlled internal galleries for promoting valve block；
Lifting system safety valve, pressure-gradient control valve, oil cylinder safety valve are integrated in preferential valve block, are mutually interconnected by the internal galleries of preferential valve block
It is logical.
Be provided in preferential valve block first pressure feedback port, first pressure mouth, the first oil return opening, the first connector of oil cylinder with
Second pressure feedback port, second pressure mouth, the second oil return opening, one a pair of the second connector of oil cylinder being arranged in automatically controlled promotion valve block
It should be connected to, superposition connection；Pressure port in preferential valve block is communicated with oil pump coming oil, oil return opening and tractor oil in preferential valve block
Case communicates, and the third pressure port in preferential valve block is connected with tractor hydraulic delivery valve；The automatically controlled oil cylinder connection for promoting valve block
Mouth leads to lift cylinder.
In preferential valve block, lifting system safety valve oil inlet is connected to first pressure feedback port and pressure-gradient control valve spring cavity, fuel-displaced
Mouth is connected to the oil return opening in preferential valve block；The first connector of oil cylinder, the electricity that the oil inlet of oil cylinder safety valve passes through preferential valve block
The second connector of oil cylinder, the oil cylinder connector that control promotes valve block are connected to lift cylinder, oil cylinder safety valve oil outlet and pressure-gradient control valve
The upper oil return opening of block, the connection of the first oil return opening；Pressure-gradient control valve import is connected to the pressure port in preferential valve block；Preferential valve outlet with
The first pressure mouth connection of preferential valve block, another outlet of pressure-gradient control valve are connected to the third pressure port of preferential valve block.
In automatically controlled promotion valve block, the automatically controlled second pressure mouth for promoting valve block of pressure-compensated valve inlet communication, outlet is mentioned
Lift valve import；Spring cavity is connected to the automatically controlled second pressure feedback port for promoting valve block, and another spring cavity and pressure compensation valve outlet connect
It is logical；Poppet inlet communication pressure compensation valve outlet, pressure-compensated valve outlet check valve inlet, oil return opening connection is automatically controlled to be mentioned
Second oil return opening of lift valve block；The automatically controlled oil cylinder connector for promoting valve block of lowering valve inlet communication, outlet connects automatically controlled promotion valve block
The second oil return opening；Check valve inlet connection promotes valve outlet, and is connected to the automatically controlled second pressure feedback port for promoting valve block, out
The automatically controlled oil cylinder connector for promoting valve block of mouth connection.
The present invention can reach following the utility model has the advantages that the automatically controlled preferential pile-up valve of promotion, choosing afterwards by adopting the above technical scheme
With the automatically controlled promotion valve block with pressure feedback signal, it is superimposed the preferential valve block integrated by pressure-gradient control valve and safety valve, not only structure
Compact, arrangement is convenient, system pipeline is simple, and lifting system perfect in shape and function, reliable performance, and is promoted preferentially meeting
In the case of, hydraulic output can be worked at the same time with promotion.
Detailed description of the invention
Fig. 1 is a kind of automatically controlled original state principle schematic diagram for promoting preferential pile-up valve of used with tractor of the present invention；
Fig. 2, which is that a kind of used with tractor of the present invention is automatically controlled, promotes preferential pile-up valve in oil pump coming oil and when automatically controlled promotion valve block does not work
Principle schematic diagram；
Fig. 3 is that preferentially integrated liquid valve promotes status architecture schematic illustration to a kind of automatically controlled promotion of used with tractor of the present invention；
Fig. 4 is that preferentially integrated liquid valve declines status architecture schematic illustration to a kind of automatically controlled promotion of used with tractor of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments.As shown in attached drawing 1 ~ 4, a kind of used with tractor
It is automatically controlled to promote preferential pile-up valve, comprising: automatically controlled promotion valve block 1, preferential valve block 2；Wherein automatically controlled promotion valve block 1 is by pressure-compensated valve
6, poppet 7, lowering valve 8, check valve 9 form；Be provided in preferential valve block 2 first pressure feedback port Y1, first pressure mouth P1,
First oil return opening R1, oil cylinder the first connector A1 promote the second pressure feedback port Y2 being arranged in valve block 1, second pressure with automatically controlled
Mouth P2, the second oil return opening R2, oil cylinder the second connector A2 correspond connection, superposition connection；Pressure port P in preferential valve block 2
It is communicated with oil pump coming oil, the oil return opening R in preferential valve block 2 is communicated with tractor fuel tank, the third pressure port in preferential valve block 2
P3 is communicated with tractor hydraulic delivery valve；The automatically controlled oil cylinder connector A for promoting valve block 1 leads to lift cylinder.
Lifting system safety valve 4, pressure-gradient control valve 5, oil cylinder safety valve 3 are integrated in preferential valve block 2, by preferential valve block 2
The connection of portion's oil duct.In preferential valve block 2,4 oil inlet of lifting system safety valve is connected to first pressure feedback port Y1 and 5 spring of pressure-gradient control valve
Chamber, oil outlet are connected to the upper oil return opening R of preferential valve block 2；The oil cylinder that the oil inlet of oil cylinder safety valve 3 passes through preferential valve block 2
First connector A1, automatically controlled the second connector of oil cylinder A2, the oil cylinder connector A for promoting valve block 1 are connected to lift cylinder, oil cylinder peace
3 oil outlet of full valve is connected to the upper oil return opening R of preferential valve block 2, the first oil return opening R1；5 import of pressure-gradient control valve and preferential valve block 2
On pressure port P connection；Pressure-gradient control valve 5 outlet be connected to the first pressure mouth P1 of preferential valve block 2, pressure-gradient control valve 5 it is another export with it is excellent
The third pressure port P3 of first valve block 2 is connected to.
Pressure-compensated valve 6, poppet 7, lowering valve 8, check valve 9 are integrated in automatically controlled promotion valve block 1, pass through interior oil
Road connection.Wherein, in automatically controlled promotion valve block 1, the automatically controlled second pressure mouth P2 for promoting valve block 1 of 6 inlet communication of pressure-compensated valve, out
Mouth connection 7 import of poppet；Spring cavity is connected to the automatically controlled second pressure feedback port Y2 for promoting valve block 1, another spring cavity and pressure
6 outlet of recuperation valve；7 inlet communication pressure-compensated valve 6 of poppet outlet, 6 outlet check valve 9 of pressure-compensated valve into
Mouthful, oil return opening is connected to automatically controlled the second oil return opening R2 for promoting valve block 1；The automatically controlled oil cylinder for promoting valve block 1 of 8 inlet communication of lowering valve connects
Interface A, outlet connect automatically controlled the second oil return opening R2 for promoting valve block 1；The outlet of 9 inlet communication poppet 7 of check valve, and mentioned with automatically controlled
The second pressure of lift valve block 1 feeds back Y2 mouthfuls of connections, the automatically controlled oil cylinder connector A for promoting valve block 1 of outlet.
Original state: as shown in Figure 1, pressure-gradient control valve 5 and pressure-compensated valve 6 are in left position, poppet 7 under spring force
It is in right position under the action of the spring with lowering valve 8.
Oil pump coming oil and automatically controlled promotion valve block off position: as shown in Fig. 2, after tractor starting, oil pump coming oil is to excellent
First valve 5,5 left pressure of pressure-gradient control valve feed back oil circuit by the automatically controlled poppet 7 for promoting valve block 1 through the oil return opening R in preferential valve block 2
Oil return, 5 right side dynamic oil of pressure-gradient control valve are communicated with oil pump coming oil, and 5 right side oil pressure counter spring force of pressure-gradient control valve makes pressure-gradient control valve 5 be in the right side
Position；Oil pump coming oil passes through the third pressure port P3 in pressure-gradient control valve 5, preferential valve block 2 to hydraulic delivery valve；Lift cylinder is at this time
Locking state, when lift cylinder load pressure increases to 22MPa suddenly, oil cylinder safety valve 3 is opened, and is protected to lift cylinder
Shield.
Promotion state: as shown in figure 3, poppet 7, which is in left side, promotes position, the outlet of poppet 7 is mended with pressure-gradient control valve 5 and pressure
It repays 6 spring cavity of valve to communicate, pressure-gradient control valve 5, pressure-compensated valve 6 is made to be in left position, oil pump coming oil sets flow by poppet 7 and passes through
Pressure-gradient control valve 5, pressure-compensated valve 6, poppet 7, push check valve 9 open, connect oil cylinder connector A to promotion through automatically controlled promotion valve block 1
Oil cylinder, oil pump coming oil preferentially guarantee automatically controlled promotion flow, and the extra oil mass of oil pump passes through pressure-gradient control valve 5, the third pressure of preferential valve block
Mouth P3 executes other work to hydraulic delivery valve；Promotion reaches capacity position or when lift cylinder is more than 20MPa, and valve block 1 mentions
It rises system safety valve 4 to open, feedback oil circuit is communicated with tank drainback on the left of pressure-gradient control valve 5, and 5 right side oil pressure of pressure-gradient control valve overcomes left side
Spring force makes pressure-gradient control valve 5 be in right position, and oil pump coming oil passes through the third pressure port P3 in pressure-gradient control valve 5, preferential valve block 2 to tractor
Hydraulic delivery valve.
Decline state: as shown in figure 4, lowering valve 8 is in demotion under left side, the oil of lift cylinder passes through lowering valve 8, automatically controlled
Promote the second oil return opening R2 of valve block 1, the first oil return opening R1 of preferential valve block 2, oil return opening R oil return box；Poppet 7 loses simultaneously
Electricity is in right position under spring force；Pressure-compensated valve 6, pressure-gradient control valve 5 spring cavity pass through poppet 7, automatically controlled promotion valve block
1 the second oil return opening R2, the first oil return opening R1, the oil return opening R of preferential valve block 2 are communicated with fuel tank；5 right side dynamic oil of pressure-gradient control valve with
Oil pump coming oil communicates, oil pump coming oil to pressure-gradient control valve 5, and 5 right side oil pressure counter spring force of pressure-gradient control valve makes pressure-gradient control valve 5 be in right position；Oil
It pumps coming oil and passes through the third pressure port P3 in pressure-gradient control valve 5, preferential valve block 2 to tractor hydraulic delivery valve.
In summary after four kinds of states can be seen that tractor starting, oil pump coming oil enters after preferential valve block comes out and is divided into
Two-way: entering automatically controlled promotion valve block all the way, and another way enters tractor hydraulic delivery valve, can meet tractor hydraulic output and mention
Rise the needs worked at the same time.When not promoted, not declining or decline, the oil come out from oil pump enters tractor hydraulic delivery valve and goes to hold
Row work or oil return；When promotion, oil pump coming oil preferentially guarantees to be promoted, and in the case where meeting promotion needs, comes out from oil pump more
Remaining oil enters tractor hydraulic delivery valve by pressure-gradient control valve；After promoting desired height, oil pump come out oil all into
Enter to tractor hydraulic delivery valve.
Lifting system safety valve protects automatically controlled lifting system, and oil cylinder safety valve protects lift cylinder, whole
A system is safe and reliable.
Preferential valve block 2 is superimposed with automatically controlled promotion valve block 1 to link together, and convenient for being arranged on tractor, and makes
It is simple clear to obtain pipeline arrangement.
Finally it should be noted that: the foregoing is only a preferred embodiment of the present invention, is not limited to this hair
Bright full content, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art
For, formal modification can be still carried out to technical solution documented by previous embodiment, or to part of skill
Art feature is equivalently replaced.All made form modifications within thinking enlightenment of the invention, equivalent replacement etc., should all wrap
It is contained within the scope of the present invention.
Claims (4)
1. a kind of used with tractor is automatically controlled to promote preferential pile-up valve, comprising: automatically controlled promotion valve block (1), preferential valve block (2)；It is wherein electric
Control promoted valve block (1) be made of pressure-compensated valve (6), poppet (7), lowering valve (8), check valve (9), preferential valve block (2) by
Lifting system safety valve (4), pressure-gradient control valve (5) and oil cylinder safety valve (3) composition；It is characterized by: automatically controlled promotion valve block (1) with it is excellent
First valve block (2) superposition connection；Pressure-compensated valve (6), poppet (7), lowering valve (8), check valve (9) are integrated in automatically controlled poppet
In block (1), it is connected to by the automatically controlled internal galleries for promoting valve block (1)；Lifting system safety valve (4), pressure-gradient control valve (5), oil cylinder peace
Full valve (3) is integrated in preferential valve block (2), is connected to by the internal galleries of preferential valve block (2).
2. a kind of used with tractor according to claim 1 is automatically controlled to promote preferential pile-up valve, it is characterised in that: preferential valve block
(2) first pressure feedback port (Y1), first pressure mouth (P1), the first oil return opening (R1), the first connector of oil cylinder are provided in
(A1) the second pressure feedback port (Y2) being arranged in valve block (1), second pressure mouth (P2), the second oil return opening are promoted with automatically controlled
(R2), the second connector of oil cylinder (A2) corresponds connection, superposition connection；Pressure port (P) and oil pump in preferential valve block (2)
Coming oil communicates, and the oil return opening (R) on preferential valve block (2) is communicated with tractor fuel tank, the third pressure port on preferential valve block (2)
(P3) it is connected with tractor hydraulic delivery valve；The automatically controlled oil cylinder connector (A) for promoting valve block (1) leads to lift cylinder.
3. a kind of used with tractor according to claim 1 is automatically controlled to promote preferential pile-up valve, it is characterised in that: preferential valve block
(2) in, lifting system safety valve (4) oil inlet be connected to first pressure feedback port (Y1) and pressure-gradient control valve (5) spring cavity, oil outlet and
Oil return opening (R) connection in preferential valve block (2)；The oil inlet of oil cylinder safety valve (3) is connected by the oil cylinder first of preferential valve block (2)
Interface (A1), automatically controlled the second connector of oil cylinder (A2), the oil cylinder connector (A) for promoting valve block (1) are connected to lift cylinder, oil cylinder
Safety valve (3) oil outlet is connected to oil return opening (R), the first oil return opening (R1) on preferential valve block (2)；Pressure-gradient control valve (5) import with
Upper pressure port (P) connection of preferential valve block (2)；Pressure-gradient control valve (5) outlet and the first pressure mouth (P1) of preferential valve block (2) connect
Logical, another outlet of pressure-gradient control valve (5) is connected to the third pressure port (P3) of preferential valve block (2).
4. a kind of used with tractor according to claim 1 is automatically controlled to promote preferential pile-up valve, it is characterised in that: automatically controlled poppet
In block (1), the automatically controlled second pressure mouth (P2) for promoting valve block (1) of pressure-compensated valve (6) inlet communication, outlet poppet
(7) import；The automatically controlled second pressure feedback port (Y2) for promoting valve block (1) of spring cavity connection, another spring cavity and pressure-compensated valve
(6) outlet；Poppet (7) inlet communication pressure-compensated valve (6) outlet, pressure-compensated valve (6) outlet check valve (9)
Import, automatically controlled the second oil return opening (R2) for promoting valve block (1) of oil return opening connection；The automatically controlled promotion valve block of lowering valve (8) inlet communication
(1) oil cylinder connector (A), outlet connect automatically controlled the second oil return opening (R2) for promoting valve block (1)；Check valve (9) inlet communication mentions
Lift valve (7) outlet, and be connected to the automatically controlled second pressure feedback port (Y2) for promoting valve block (1), the automatically controlled promotion valve block of outlet
(1) oil cylinder connector (A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910291527.7A CN109882468A (en) | 2019-04-12 | 2019-04-12 | A kind of used with tractor is automatically controlled to promote preferential pile-up valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910291527.7A CN109882468A (en) | 2019-04-12 | 2019-04-12 | A kind of used with tractor is automatically controlled to promote preferential pile-up valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109882468A true CN109882468A (en) | 2019-06-14 |
Family
ID=66937046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910291527.7A Pending CN109882468A (en) | 2019-04-12 | 2019-04-12 | A kind of used with tractor is automatically controlled to promote preferential pile-up valve |
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| CN (1) | CN109882468A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0108347A1 (en) * | 1982-11-01 | 1984-05-16 | Valmet Oy | Hydraulic system for a tractor or equivalent |
| EP1350708A1 (en) * | 2002-04-04 | 2003-10-08 | CNH Österreich GmbH | Hydraulic system for a tractor and attached tool |
| DE102008052408A1 (en) * | 2008-10-21 | 2010-04-22 | Linde Material Handling Gmbh | Hydrostatic drive system for large forklift, has locking valve devices provided in connection lines of electrically actuated control valve and comprising load compensation function during lowering operation of lift drive |
| CN202007800U (en) * | 2011-04-14 | 2011-10-12 | 中国一拖集团有限公司 | Load sensing hydraulic system for tractor |
| CN102384113A (en) * | 2011-08-09 | 2012-03-21 | 三一重机有限公司 | Oil supply and energy-saving device for mining dump truck |
| US20150082783A1 (en) * | 2012-04-28 | 2015-03-26 | Anhui Heli Co., Ltd | Energy regeneration type forklift hydraulic system |
| CN209925323U (en) * | 2019-04-12 | 2020-01-10 | 第一拖拉机股份有限公司 | Tractor is with automatically controlled preferential integrated valve that promotes |
-
2019
- 2019-04-12 CN CN201910291527.7A patent/CN109882468A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0108347A1 (en) * | 1982-11-01 | 1984-05-16 | Valmet Oy | Hydraulic system for a tractor or equivalent |
| EP1350708A1 (en) * | 2002-04-04 | 2003-10-08 | CNH Österreich GmbH | Hydraulic system for a tractor and attached tool |
| DE102008052408A1 (en) * | 2008-10-21 | 2010-04-22 | Linde Material Handling Gmbh | Hydrostatic drive system for large forklift, has locking valve devices provided in connection lines of electrically actuated control valve and comprising load compensation function during lowering operation of lift drive |
| CN202007800U (en) * | 2011-04-14 | 2011-10-12 | 中国一拖集团有限公司 | Load sensing hydraulic system for tractor |
| CN102384113A (en) * | 2011-08-09 | 2012-03-21 | 三一重机有限公司 | Oil supply and energy-saving device for mining dump truck |
| US20150082783A1 (en) * | 2012-04-28 | 2015-03-26 | Anhui Heli Co., Ltd | Energy regeneration type forklift hydraulic system |
| CN209925323U (en) * | 2019-04-12 | 2020-01-10 | 第一拖拉机股份有限公司 | Tractor is with automatically controlled preferential integrated valve that promotes |
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