CN202370926U - Power commutation control valve block assembly for tractor - Google Patents
Power commutation control valve block assembly for tractor Download PDFInfo
- Publication number
- CN202370926U CN202370926U CN2011205287743U CN201120528774U CN202370926U CN 202370926 U CN202370926 U CN 202370926U CN 2011205287743 U CN2011205287743 U CN 2011205287743U CN 201120528774 U CN201120528774 U CN 201120528774U CN 202370926 U CN202370926 U CN 202370926U
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- CN
- China
- Prior art keywords
- tractor
- control valve
- block assembly
- valve body
- valve block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a power commutation control valve block assembly for a tractor. The power commutation control valve block assembly for the tractor comprises an energy accumulator, a reverse gear electric proportional pressure reducing valve, a forward gear electric proportional pressure reducing valve, a valve body, a first pressure measurement joint, a second pressure measurement joint, a third pressure measurement joint and a temperature measurement joint, wherein the energy accumulator is communicated with an oil inlet way of a power commutation control valve block through a pipeline; the reverse gear electric proportional pressure reducing valve and the forward gear electric proportional pressure reducing valve are arranged on one side of the valve body side by side and are communicated with each other through an oil way in the valve body; and the first pressure measurement joint, the second pressure measurement joint, the third pressure measurement joint and the temperature measurement joint are arranged on the inner periphery of the valve body corresponding to respective oil ways. By using the power commutation control valve block assembly for the tractor, the power commutation of the tractor is realized by the combination and the separation of an electromagnetic valve, so that the power commutation is realized conveniently and quickly on the basis of not disconnecting a power source, and simultaneously the working strength of a driver is lightened; and the power commutation control valve block assembly for the tractor is compact in structure and convenient to use.
Description
Technical field
The utility model belongs to the tractor field, relates to a kind of wheeled tractor power reversing control valve block assembly.
Background technique
At present, along with improving constantly of domestic and international tractor hydraulic control technique level, on the large power wheel tractor of producing at home; Tractor is when switching-over; All need cut off power source, realize through gear meshing then, commutation process is complicated like this; Driver's workload is big, is easy to occur gear simultaneously and beats the tooth phenomenon and cause commutation failure.Therefore; Through an automatically controlled tractor dynamic power reversing control valve block assembly; The combination of the power of tractor switching-over through solenoid valve realized with separating, can the power of Rapid Realization tractor switching-over easily on the basis that does not cut off power source, also alleviated driver's working strength.
The model utility content
The purpose of the utility model be to provide a kind of simple in structure, use tractor dynamic power reversing control valve block assembly reliable, easy operation; Through the reasonable combination of plug-in type two-bit triplet electricity proportional pressure-reducing valve and accumulator, can make things convenient for tractor under the situation of not cutting off power, to carry out the power switching-over fast.
The utility model can achieve the above object through following technological scheme: used with tractor power reversing control valve block assembly comprises: accumulator, the electric proportional pressure-reducing valve of retaining that falls back, forward gear electricity proportional pressure-reducing valve, valve body, first pressure measuring tie-in, second pressure measuring tie-in, the 3rd pressure measuring tie-in and thermometric joint; Accumulator communicates through the in-line of pipeline and power reversing control valve piece, and the electric proportional pressure-reducing valve of retaining that falls back, forward gear electricity proportional pressure-reducing valve are set up in parallel the side at valve body, communicate through the oil duct in the valve body between them; First pressure measuring tie-in, second pressure measuring tie-in, the 3rd pressure measuring tie-in and thermometric joint correspondence oil duct separately are installed in the inner periphery of valve body.
The utility model can reach following beneficial effect: through a tractor dynamic power reversing control valve block assembly; The combination of the power of tractor switching-over through solenoid valve realized with separating; Can be on the basis that does not cut off power source the power of Rapid Realization tractor switching-over easily, also alleviated driver's working strength simultaneously; Compact structure, easy to use.
Description of drawings
Fig. 1 is the structural representation of the utility model tractor dynamic power reversing control valve block assembly;
Fig. 2 is the fundamental diagram of the utility model tractor dynamic power reversing control valve block assembly;
Fig. 3 is the forward gear bonding state schematic representation of the utility model tractor dynamic power reversing control valve block assembly;
Fig. 4 is the retaining bonding state schematic representation that falls back of the utility model tractor dynamic power reversing control valve block assembly.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further description.Shown in Fig. 1～4; Used with tractor power reversing control valve block assembly mainly comprises: accumulator 1, the electric proportional pressure-reducing valve of retaining 2 that falls back, forward gear electricity proportional pressure-reducing valve 3, valve body 4, the first pressure measuring tie-in G1, the second pressure measuring tie-in G2, the 3rd pressure measuring tie-in G3 and thermometric joint T pressure measuring tie-in etc.; Accumulator 1 communicates through the in-line of pipeline and power reversing control valve block assembly, and the electric proportional pressure-reducing valve of retaining 2 that falls back, forward gear electricity proportional pressure-reducing valve 3 are set up in parallel the side at valve body 4, communicate through the oil ducts in the valve body 4 between them; The first pressure measuring tie-in G1, the second pressure measuring tie-in G2, the 3rd pressure measuring tie-in G3 and thermometric joint T etc. are arranged on the inner periphery of valve body 4, communicate through the oil duct in the valve body 4 between them; The first pressure measuring tie-in G1 is screwed in valve body 4 upper-end surfaces through screw thread, links to each other with in-line through the oil duct in the valve body 4; The second pressure measuring tie-in G2 is screwed in valve body 4 upper-end surfaces through screw thread, links to each other with the retaining clutch oil circuit that falls back through the oil duct in the valve body 4; The 3rd pressure measuring tie-in G3 is screwed in valve body 4 upper-end surfaces through screw thread, links to each other with forward gear clutch oil circuit through the oil duct in the valve body 4; Thermometric joint T is screwed in valve body 4 upper-end surfaces through screw thread, links to each other with in-line through the oil duct in the valve body 4.
Used with tractor power reversing control valve block assembly assembling back is through being bolted to the transmission case right side of tractor direction of advance.
As shown in Figure 2, under the initial state, tractor is not put into gear, and the electric proportional pressure-reducing valve of retaining 2 that falls back this moment, all energisings of forward gear electricity proportional pressure-reducing valve 3 after this moment, oil pump came oil to get into valve body 4, get into stand-by state, and system pressure still is a low voltage control system pressure.
As shown in Figure 3, under the working state, hang forward gear like tractor; Forward gear electricity proportional pressure-reducing valve 3 energisings this moment after oil pump comes oil to get into valve body 4, get into the forward gear clutch through forward gear electricity proportional pressure-reducing valve 3 inner oil ducts; The forward gear clutch is combined, and tractor gets into the forward gear state; Because what use is electric proportional pressure-reducing valve, so the pressure when the forward gear clutch combines is the curve propradation, ins conjunction with quick and stable, tractor quick and stable entering forward gear.
As shown in Figure 4, under the working state, become the retaining that falls back from forward gear like tractor; Then forward gear electricity proportional pressure-reducing valve 3 outages this moment, electric proportional pressure-reducing valve 2 energisings of the retaining that falls back simultaneously are under this state; The forward gear clutch separates rapidly, and the retaining clutch that falls back slowly combines.Along with the forward gear clutch is thoroughly thrown off and the thorough combination of the retaining clutch that falls back, tractor gets into the state that falls back.1 of accumulator has guaranteed the mild transition of pressure in commutation process, and it is comfortable to make that the driver drives, and the tractor quick and stable gets into the retaining that falls back.
Under the working state, directly hang the retaining that falls back, electric proportional pressure-reducing valve 2 energisings of the retaining that falls back this moment like tractor; After oil pump comes oil to get into valve body 4, get into the retaining clutch that falls back through the electric proportional pressure-reducing valve 2 inner oil ducts of the retaining that falls back, the retaining clutch that falls back combines, and tractor gets into the state that falls back.Because what use is electric proportional pressure-reducing valve, so the pressure that falls back when keeping off the clutch combination is the curve propradation, in conjunction with steady, fast, the tractor quick and stable gets into the retaining that falls back.
After the parking, 3 outages of forward gear electricity proportional pressure-reducing valve, electric proportional pressure-reducing valve 2 outages of the retaining that falls back simultaneously, tractor gets into vehicle stop state.
The first pressure measuring tie-in G1, the second pressure measuring tie-in G2, the 3rd pressure measuring tie-in G3 and thermometric joint T can monitor pressure and the oil temperature in the tractor synchronous communicating process at any time.
Claims (1)
1. used with tractor power reversing control valve block assembly comprises: accumulator (1), the retaining electric proportional pressure-reducing valve (2) that falls back, forward gear electricity proportional pressure-reducing valve (3), valve body (4), first pressure measuring tie-in (G1), second pressure measuring tie-in (G2), the 3rd pressure measuring tie-in (G3) and thermometric joint (T); It is characterized in that: accumulator (1) communicates through the in-line of pipeline and power reversing control valve piece; Retaining electric proportional pressure-reducing valve (2), the forward gear electricity proportional pressure-reducing valve (3) that falls back is set up in parallel the side at valve body (4), communicates through the interior oil duct of valve body (4) between them; First pressure measuring tie-in (G1), second pressure measuring tie-in (G2), the 3rd pressure measuring tie-in (G3) and thermometric joint (T) correspondence oil duct separately are installed in the inner periphery of valve body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205287743U CN202370926U (en) | 2011-12-16 | 2011-12-16 | Power commutation control valve block assembly for tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205287743U CN202370926U (en) | 2011-12-16 | 2011-12-16 | Power commutation control valve block assembly for tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370926U true CN202370926U (en) | 2012-08-08 |
Family
ID=46594630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205287743U Expired - Fee Related CN202370926U (en) | 2011-12-16 | 2011-12-16 | Power commutation control valve block assembly for tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370926U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829178A (en) * | 2012-09-06 | 2012-12-19 | 三一重工股份有限公司 | Transmission system shifting control method of hydraulic motor |
-
2011
- 2011-12-16 CN CN2011205287743U patent/CN202370926U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829178A (en) * | 2012-09-06 | 2012-12-19 | 三一重工股份有限公司 | Transmission system shifting control method of hydraulic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20201216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |