CN202579986U - Electric-hydraulic proportional variable speed operating valve - Google Patents
Electric-hydraulic proportional variable speed operating valve Download PDFInfo
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- CN202579986U CN202579986U CN 201220001877 CN201220001877U CN202579986U CN 202579986 U CN202579986 U CN 202579986U CN 201220001877 CN201220001877 CN 201220001877 CN 201220001877 U CN201220001877 U CN 201220001877U CN 202579986 U CN202579986 U CN 202579986U
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Abstract
The utility model relates to an electric-hydraulic proportional variable speed operating valve, which is characterized in that a sequence valve and six electric-hydraulic proportional cartridge valves are arranged on a valve body, a pressure oil opening in the valve body is communicated with a normally closed opening of the sequence valve and a normally closed opening of each electric-hydraulic proportional cartridge valve, work openings of the six electric-hydraulic proportional cartridge valves are respectively connected with forward (FRD), reverse (REV), 1ST (first), 2ND (second), 3RD (third) and 4Th (fourth) gear clutches, a TR (transmission receiving) opening of the sequence valve is connected with a torque converter oil path, and electric control wiring openings of the electric-hydraulic proportional cartridge valves are connected with corresponding control openings of a gearbox controller. The electric-hydraulic proportional variable speed operating valve has the advantages that the sequence valve for controlling the inlet pressure of electric-hydraulic proportional valves of each gear is integrated in the variable speed operating valve, the hydraulic system pipeline of the transmission part is simplified, and the installation space of a gearbox is reduced; the production efficiency is improved, and the failure occurrence rate is reduced; the clutch pressure regulation flexibility is improved; and the separation curve regulation of the clutches of each gear is realized, so the motive power continuity of the whole vehicle is ensured, and the gear shift motive power continuity and stability under special work conditions such as slop climbing is ensured.
Description
Technical field
The utility model relates to the hydraulic transmission field, and especially the Powershift transmission to engineering machinery carries out speed change manipulation control, is applicable to the electric-hydraulic proportion speed change control valve of full-automatic shift transmission speed change manipulation control.
Background technique
At present, stabilized shaft gearbox is the development trend of construction machinery gear box, and power shfit is the main gear changing mode of stabilized shaft gearbox.Therefore the research of power shfit speed change control valve is particularly important, and it has determined the performance quality of gearbox.Comparatively the manipulation of the power shfit speed change of extensive use is divided into two types substantially in the market: employing machinery mixes control with hydraulic pressure and the mechanical electronic hydraulic mixing is controlled.These two kinds of speed change control valves structurally are divided into gear selector valve and pressure regulator valve two-part.Both pressure regulator valve parts are basic identical; Utilize accumulator piston, spool and spring etc. to form pressure regulator valve; Its basic principle is to utilize the pressure feedback of each gear clutch to accumulator piston, realizes the to-and-fro motion of pressure regulation valve rod, thereby controls each gear clutch pressure curve.Both main differences with the control mode of gear selector valve, the former adopts linkage mechanism and flexible axle control speed change control valve stem position, realizes each gear switch, belongs to mechanical type and handles; The latter utilizes electromagnetic cartridge valve to realize the switching-over of each gear, and it utilizes the magnetic switch cartridge valve to realize the break-make of each gear oil circuit, belongs to electrichydraulic control.The pressure regulator valve complex structure of these two kinds of speed change control valves, difficulty of processing is bigger; Each clutch pressure control curve has only a kind of; The adjustment difficulty of pressure regulation curve is bigger; Can't reach engineering machinery requirement to clutches engaged and the adjustment of separating pressure curve under different operating modes, above-mentioned in addition two kinds of speed change control valves can't reach the requirement of full-automatic shift transmission to property of automatic shft.Engineering machinery especially loader is increasingly high to complete machine shift control travelling comfort, requires increasingly highly to energy-conservation, and a property of automatic shft of research and development is good under this background, and the speed change that can realize full-automatic gear shift is handled and to be seemed extremely important.
Summary of the invention
The purpose of the utility model just provides a kind of gearbox gear-shift quality of improving, and improves the steady rapidity and the travelling comfort of complete machine gear shift, realizes the electric-hydraulic proportion speed change control valve of the full-automatic gear shift of complete machine.
The solution of the utility model is such: a sequence valve and six electro-hydraulic proportion cartridge valves are installed on valve body; In the nc port of the pressure hydraulic fluid port connection sequence valve in the valve body and the nc port of each electro-hydraulic proportion cartridge valve; The working hole of six electro-hydraulic proportion cartridge valves is received the FRD that advances respectively, is retreated REV, 1ST, 2ND, 3RD, 4TH gear clutch; The TR mouth of sequence valve connects the torque-converters oil circuit; The return opening unification of sequence valve and electro-hydraulic proportion cartridge valve is arranged in the attachment face of valve body, and this attachment face combines with gearbox; The automatically controlled connection jaws of electro-hydraulic proportion cartridge valve inserts the corresponding control mouth of gearbox control.
When described six electro-hydraulic proportion cartridge valves are to be the same one side that the row shape is distributed in valve body; The working hole of described six electro-hydraulic proportion cartridge valves advance FRD, retreat REV, 1ST, 2ND, 3RD, 4TH gear clutch and be the row shape to be distributed in the attachment face that valve body is installed the electro-hydraulic proportion cartridge valve; Described valve body has concave station, when described sequence valve is mounted in the concave station place, is the best design of the utility model.
The sequence valve that the advantage of the utility model will be controlled each gear electro-hydraulic proportional valve inlet pressure is integrated in the speed change control valve, simplifies drive part hydraulic system pipeline and the installing space that reduces gearbox; Utilize electro-hydraulic proportional valve to regulate the engaging pressure curve of each gear clutch, simplified the complicated mechanical pressure-regulating device, enhance productivity and reduced rate of breakdown; Adopt electro-hydraulic proportional valve to carry out the pressure regulation curve controlled, can adjust the clutches engaged pressure diagram according to actual needs, increased the flexibility of clutch pressure regulation, reached the optimization of clutches engaged under the different operating modes.Through the adjustment of each gear clutch pressure regulation curve of adjustment controller internal processes realization, the adjustment of pressure regulation curve is efficient and convenient; Can realize the adjustment of each gear clutch separation curve, thereby guarantee the continuity of car load power, guarantee the continuous stationarity of power of gear shift under the special operation conditions such as upward slope; Utilize temperature transducer that hydraulic oil temperature is fed back to controller, utilize the feedback regulation of control signal to eliminate of the influence of oily temperature each gear pressure regulation curve; Utilize this electric-hydraulic proportion speed change control valve can realize the full-automatic gear shift of Powershift transmission.
Description of drawings
Accompanying drawing is the enforcement of the utility model.
Accompanying drawing 1 is the structural representation of the utility model.
Accompanying drawing 2 is left views of accompanying drawing 1.
Accompanying drawing 3 is rear views of accompanying drawing 1.
Accompanying drawing 4 is right elevations of accompanying drawing 1.
The hydraulic schematic diagram of accompanying drawing 5 the utility model.
Embodiment
The utility model is equipped with a sequence valve 2 and six electro-hydraulic proportion cartridge valves 3 on valve body 1; In the nc port of the pressure oil P mouth connection sequence valve 2 in the valve body 1 and the nc port of each electro-hydraulic proportion cartridge valve 3; The working hole of six electro-hydraulic proportion cartridge valves 3 is received the FRD that advances respectively, is retreated REV, 1ST, 2ND, 3RD, 4TH gear clutch; The TR mouth of sequence valve 2 connects the torque-converters oil circuit; The oil return inlet T unification of sequence valve 2 and electro-hydraulic proportion cartridge valve 3 is arranged in the attachment face of valve body, and this attachment face combines with gearbox; The automatically controlled connection jaws of electro-hydraulic proportion cartridge valve 3 inserts the corresponding control mouth of gearbox control.
Present embodiment is like accompanying drawing 1,2,3, shown in 4, and described six electro-hydraulic proportion cartridge valves 3 are the same one sides that are distributed in valve body 1, and six electro-hydraulic proportion cartridge valves 3 described in the present embodiment are to be the same one side that the row shape is distributed in valve body 1; The working hole of described six electro-hydraulic proportion cartridge valves 3 advance FRD, retreat REV, 1ST, 2ND, 3RD, 4TH gear clutch and be the row shape to be distributed in the attachment face that valve body 1 is installed the electro-hydraulic proportion cartridge valve; Described valve body 1 has concave station, and described sequence valve 2 is mounted in concave station; Said valve body 1 is equipped with temperature transducer 4, and the temperature detecting point of temperature transducer 4 is communicated with the filler opening of electro-hydraulic proportion cartridge valve, is the filler opening temperature of electro-hydraulic proportion cartridge valve 3.
Operating mode according to the engineering machinery complete machine; The corresponding electric control signal of controller transmission; Control electro-hydraulic proportion cartridge valve 3, thus accomplished corresponding gear clutches engaged pressure diagram adjustment and corresponding gear clutch separate the curve adjustment, the combination of realization clutch quick and stable with separate.Temperature transducer feeds back to controller with hydraulic fluid temperature, utilizes the feedback regulation of control signal to eliminate the influence of oily temperature to each gear pressure regulation curve, has improved property of automatic shft.
Claims (6)
1. an electric-hydraulic proportion speed change control valve is characterized in that on valve body (1), being equipped with a sequence valve (2) and six electro-hydraulic proportion cartridge valves (3); In the nc port of mouthful connection sequence valve (2) of the pressure oil (P) in the valve body (1) and the nc port of each electro-hydraulic proportion cartridge valve (3); The working hole of six electro-hydraulic proportion cartridge valves (3) is received the FRD that advances respectively, is retreated REV, 1ST, 2ND, 3RD, 4TH gear clutch; The TR mouth of sequence valve (2) connects the torque-converters oil circuit; The unified attachment face that is arranged in valve body of the return opening (T) of sequence valve (2) and electro-hydraulic proportion cartridge valve (3), this attachment face combines with gearbox; The automatically controlled connection jaws of electro-hydraulic proportion cartridge valve (3) inserts the corresponding control mouth of gearbox control.
2. electric-hydraulic proportion speed change control valve according to claim 1 is characterized in that described six electro-hydraulic proportion cartridge valves (3) are the same one sides that is distributed in valve body (1).
3. electric-hydraulic proportion speed change control valve according to claim 2 is characterized in that described six electro-hydraulic proportion cartridge valves (3) are to be the same one side that the row shape is distributed in valve body (1).
4. electric-hydraulic proportion speed change control valve according to claim 1, the working hole that it is characterized in that described six electro-hydraulic proportion cartridge valves (3) advance FRD, to retreat REV, 1ST, 2ND, 3RD, 4TH gear clutch be to be the row shape to be distributed in the attachment face that valve body (1) is installed the electro-hydraulic proportion cartridge valve.
5. electric-hydraulic proportion speed change control valve according to claim 1 is characterized in that described valve body (1) has concave station, and described sequence valve (2) is mounted in the concave station place.
6. electric-hydraulic proportion speed change control valve according to claim 1 is characterized in that said valve body (1) is equipped with temperature transducer (4), and the temperature detecting point of described temperature transducer (4) is communicated with the filler opening of electro-hydraulic proportion cartridge valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220001877 CN202579986U (en) | 2012-01-05 | 2012-01-05 | Electric-hydraulic proportional variable speed operating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220001877 CN202579986U (en) | 2012-01-05 | 2012-01-05 | Electric-hydraulic proportional variable speed operating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579986U true CN202579986U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220001877 Expired - Lifetime CN202579986U (en) | 2012-01-05 | 2012-01-05 | Electric-hydraulic proportional variable speed operating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202579986U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333132A (en) * | 2015-10-20 | 2016-02-17 | 杭州前进齿轮箱集团股份有限公司 | Electro-hydraulic proportional operating valve for automatic gearbox of engineering machine |
| CN107255158A (en) * | 2017-06-09 | 2017-10-17 | 北京航空航天大学 | A kind of pure electric automobile two-shift automatic speed variator hydraulic valve plate |
| CN113757271A (en) * | 2021-09-15 | 2021-12-07 | 英轩重工有限公司 | Electric control speed change valve for gearbox |
-
2012
- 2012-01-05 CN CN 201220001877 patent/CN202579986U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333132A (en) * | 2015-10-20 | 2016-02-17 | 杭州前进齿轮箱集团股份有限公司 | Electro-hydraulic proportional operating valve for automatic gearbox of engineering machine |
| CN107255158A (en) * | 2017-06-09 | 2017-10-17 | 北京航空航天大学 | A kind of pure electric automobile two-shift automatic speed variator hydraulic valve plate |
| CN113757271A (en) * | 2021-09-15 | 2021-12-07 | 英轩重工有限公司 | Electric control speed change valve for gearbox |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |