CN202510442U - Novel engineering machinery electrohydraulic control variable speed control valve - Google Patents
Novel engineering machinery electrohydraulic control variable speed control valve Download PDFInfo
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- CN202510442U CN202510442U CN2012201194265U CN201220119426U CN202510442U CN 202510442 U CN202510442 U CN 202510442U CN 2012201194265 U CN2012201194265 U CN 2012201194265U CN 201220119426 U CN201220119426 U CN 201220119426U CN 202510442 U CN202510442 U CN 202510442U
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Abstract
The utility model relates to a variable speed control valve, and in particular relates to a novel engineering machinery electrohydraulic control variable speed control valve. The technical problems that the existing variable speed control valve does not have the dual-speed pressure control function and the main oil pressure overload protection function and is low in safety and fewer in functions and the like in the prior art are mainly solved. The variable speed control valve comprises a valve body (1), and is characterized in that the valve body (1) is made of vermicular cast iron; a pressure reducing device, a pressure control buffer device, a gear control device, a dual-speed secondary pressure control device, an overload protection device and an oil transportation plate device; and the devices are communicated through a valve body oil groove or an oil transportation plate oil way.
Description
Technical field
The utility model relates to a kind of speed change control valve, especially relates to a kind of new type of engineering mechanical electro-hydraulic control speed change control valve.
Background technique
Though many gears of engineering machinery electrichydraulic control speed change control valve passes through multinomial technique improvement but has satisfied not the demand of domestic and international project machinery market development to novel electrichydraulic control control valve at present.That Chinese patent discloses is a kind of, and (notice of authorization number: CN201144915Y), its technological scheme that adopts is: valve body is the integral casting iron construction, and the some valve openings of machined, upper and lower surface are processed some logical oily apertures and oil groove.Some typing solenoid valves and some indefinite form position control valves have been made up in valve opening one end and inside; Configuration direction spool and spring can be made orientation, quantitatively move in all directions control valve under pressure oil promotes; Thereby make inlet pressure oil form the logic oil circuit and lead to different outlets; Form different gear oil circuits,, realize gearshift in order to promote the different operating oil cylinder.The pressure oil that pushing direction spool and spring move is the guide oil by several typing electromagnetic valve, and its pressure is different with inlet pressure oil with flow; The pressure of guide oil and inlet pressure oil all has the valve inner pressure regulator valve to regulate the two mutual noninterference.Solenoid valve is installed a side that is arranged in valve body.Solenoid valve is by the DC power supply on the engineering machinery main frame, the control of driving cubicle switch.The valve inner pressure regulator valve is arranged in the valve body, can accurately set up the pressure of principal pressure and guide oil.But this product does not have double speed pressure control function and main oil pressure overload protection function, and poor stability, function are few.
The model utility content
The utility model provides a kind of new type of engineering mechanical electro-hydraulic control speed change control valve; It mainly is to solve existing in prior technology speed change control valve not have double speed pressure control function and main oil pressure overload protection function, poor stability, function technical problem less etc.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
The new type of engineering mechanical electro-hydraulic control speed change control valve of the utility model; Comprise valve body; Described valve body is that vermicular cast iron is processed; Be provided with decompressor, pressure control damping device, shift-position control apparatus, double speed secondary pressure control gear, overload protection arrangement and oil transportation panel assembly in the valve body and form, be communicated with through valve body oil groove or oil transportation leaf fat road between each device.
As preferably; Described decompressor includes relief spring, decompression valve rod, and the decompressor outside is by double speed valve or cover plate for sealing, and decompressor is provided with oil suction chamber and oil back chamber; The filler opening of oil suction chamber is located at the bottom surface of valve body; And be communicated with the gearbox oil supply system through dividing plate, oil transportation plate, the return opening and the filler opening of oil back chamber are arranged side by side, and it is communicated with torque-converters through dividing plate, oil transportation plate.Filler opening also can be located at above the valve body with return opening and be communicated with pipeline and gearbox oil supply system, torque-converters respectively.The hydraulic pressure of oil pump can get into oil pocket from filler opening during work; Make between reduction valve end face and the sealing plane to form in the pushed at high pressure reduction valve axial compression relief spring through three supercharging apertures of reduction valve and move; Open pressure-reduction outlet, make filler opening be communicated with decompression with return opening, relief spring is located at 1.6-1.8MPa with main oil pressure; Main oil pressure can be set according to the requirement of different gearbox main frames within the specific limits.
As preferably; Described pressure control damping device comprises the pressure control valve rod that is located in the valve body; In the endoporus of pressure control valve rod pressure control spring is housed; Pressure control valve rod overcoat is equipped with the accumulation of energy balance spring, and the other end of accumulation of energy balance spring is packed in the accumulation of energy equilibrium valve, and also is provided with the pressure regulator valve bar in the valve body of pressure control damping device par position; Pressure regulator valve bar spring is equipped with in the pressure regulator valve bar outside, and accumulation of energy equilibrium valve, the pressure regulator valve bar spring outside are by double speed valve or cover plate for sealing.The pressure control valve rod is provided with 2 pressure regulating holes, and working connection is communicated with each device through valve body oil groove and oil transportation leaf fat road.The pressure control damping device can be controlled gear switch the steady, soft of process that boost.The main oil pressure pressure taps of electrichydraulic control speed change control valve is located at pressure regulator valve bar top, and working connection is communicated with the oil groove of pressure control damping device through valve body.
As preferably; Described shift-position control apparatus is made up of 5 gear control spools and 5 gear control springs; Every group of gear control valve all is installed in the valve opening; The gear control valve of 5 combinations respectively with valve body in oil groove, oil transportation plate leaf fat road, working connection, oil back chamber be communicated with, the gear control valve of 5 combinations is connected with 5 solenoid valves.Gear control spool and spring are done directed quantitative moving during work under force, and logic control relation is formed in the gear control valve of 5 combinations and 5 solenoid valve designs, can form 6 forward gearss, 3 backward gears at most.5 solenoid valves of M1-M5 are installed in the upper side of valve body, and case protection, the sealing of O RunddichtringO, stapled are arranged outward.M2, M3, M4 electromagnetic valve are advanced one grade, and M2, M4, M5 electromagnetic valve are advanced 2 grades, and M3, M4 electromagnetic valve are advanced 3 grades, and M4, M5 control are advanced 4 grades, and the M3 electromagnetic valve is advanced 5 grades, and the M5 electromagnetic valve is advanced 6 grades.M1 electromagnetic valve backward gear (PR) switches to the backward gear oil circuit to electrichydraulic control speed change control valve from forward gears, and M1, M2, M4 electromagnetic valve fall back 1 grade, and M1, M4 electromagnetic valve fall back 2 grades, and the M1 electromagnetic valve falls back 3 grades.5 solenoid valves of M1-M5 are connected with gear selector by the 6 core aviation sockets that are installed on the valve body, and the combination of each solenoid valve is opened, closed by gear selector and control.Can also be according to 4 forward gearss of logical relation composite design of gear control valve and solenoid valve, 3 backward gears etc.
Establish small valve core in the valve body between M3 and the M4 solenoid valve, the small valve core center is established oilhole and is communicated with the PR chamber, and the small valve core the other end is established spring eye, and string dress small valve core spring is fixed on small valve core pad, small valve core baffle plate on the valve body by screw in the hole.The pressure controlling that act as the PR oil circuit of small valve core.
As preferably; Described double speed secondary pressure control gear is installed in the downside of valve body; Double speed secondary pressure control gear includes the double speed valve body, establishes locking oiling valve, locking pressure regulator valve, locking control valve in the double speed valve body, and the oil circuit between each valve pocket is communicated with; The locking oiling valve is made up of locking small valve core, locking little spring and fittings body, and fittings body is connected with oil pipe with the solenoid valve actuator port, and the oil inlet hole of locking small valve core oil suction chamber bottom surface is connected with the oil suction chamber of decompressor; The locking pressure regulator valve is made up of locking spool, spring, pressure regulation pad and plug screw, and the valve pocket bottom surface oil inlet hole of locking pressure regulator valve is communicated with the pressure control damping device; Be provided with locking control valve piece in the locking control valve.When the M4 solenoid valve is opened, get into blocking-valve core upper end after the locking oiling valve oil-feed of double speed valve and promote locking control valve piece and inwardly move, thereby promotion accumulation of energy equilibrium valve and pressure controlled valve balance are set in pressure in the scope of 1.2-1.5MPa with push rod shaft.The function of double speed valve is the two characteristics of pressing of height, and it realizes the transmission of high and low two kinds of different working pressure by electromagnetic valve, satisfies the pressure requirement of the different gear speed of gearbox.
As preferably, described overload protection arrangement is made up of the outer oil return overload protection arrangement of oil return overload protection arrangement and externally connected type in the externally connected type.
As preferably; The oil return overload protection arrangement includes the first oil-feed valve body in the described externally connected type; The first oil-feed valve body connects first Safety valve body, establishes the first oil-feed valve port and first return opening on the first oil-feed valve body, establishes first safety valve that can the first oil-feed valve port and the first return opening oil circuit are communicated with or cut off in the first oil-feed valve body; First safety valve is connected on first Safety valve body through first safety valve spring, and first return opening is communicated with drainback passage on the valve body.Electrichydraulic control speed change control valve working pressure is set in 1.6-1.8MPa, and the cracking pressure of safety valve is set in 1.5 times (when electrichydraulic control speed change control valve working pressure was heightened by different gearbox types, opening pressure of safety valve was heightened synchronously) of working pressure.Run into working oil path when raising suddenly, first safety valve can be opened automatically, makes first filler opening be communicated with first return opening and carries out release, has guaranteed the safe handling of gearbox.
As preferably, the outer oil return overload protection arrangement of described externally connected type includes the second oil-feed valve body, and the second oil-feed valve body connects second Safety valve body; Have second filler opening on the second oil-feed valve body; Have second return opening on second Safety valve body, establishing in second Safety valve body can be with second safety valve of second filler opening sealing, and second safety valve is connected on the lining through second safety valve spring; Lining is located in second Safety valve body, and second return opening is communicated with fuel tank.Run into working oil path when raising suddenly, second safety valve can be opened automatically, makes second filler opening be communicated with second return opening and carries out release, has guaranteed the safe handling of gearbox.
Therefore; The main oil pressure overload protection function of the utility model can make security of products higher, has the double speed pressure control function, pressure can be transmitted more optimize; Shift-position control apparatus in these 5 electromagnetic valve valve bodies of the M1-M5 of electrichydraulic control speed change control valve is done quantitatively directed moving; Reach 6 forward gears, 3 backward gears through combinations such as oil transportation plates, can also be combined into 4 forward gears, 3 backward gears etc., make that product function is more, performance is more excellent according to different gearbox models; Valve body adopts the vermicular cast iron casting, has intensity height, good, the low cost and other advantages of good, the high temperature resistant cryogenic property of wear resistance.
Description of drawings
Accompanying drawing 2 is internal structure schematic representation of the utility model;
Accompanying drawing 3 is structural representations of oil return overload protection arrangement in the utility model externally connected type;
Accompanying drawing 4 is structural representations of the outer oil return overload protection arrangement of the utility model externally connected type.
Component among the figure; Position and numbering: valve body 1; Relief spring 2; Decompression valve rod 3; Double speed valve 4; Push rod 5; Pressure control valve rod 6; Pressure control spring 7; Accumulation of energy balance spring 8; Accumulation of energy equilibrium valve 9; Pressure regulator valve bar 10; Pressure regulator valve bar spring 11; Gear control spool 12; Gear control spring 13; Double speed valve body 14; Locking small valve core 15; Locking little spring 16; Fittings body 17; Solenoid valve 18; Locking spool 19; Spring 20; Pressure regulation pad 21; Plug screw 22; Locking control valve piece 23; The first oil-feed valve body 24; First Safety valve body 25; The first oil-feed valve port 26; First return opening 27; First safety valve 28; First safety valve spring 29; Lining 30; The second oil-feed valve body 31; Second Safety valve body 32; Second filler opening 33; Second return opening 34; Second safety valve 35; Second safety valve spring 36.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of the utility model.
Embodiment: this routine new type of engineering mechanical electro-hydraulic control speed change control valve; Like Fig. 1, Fig. 2; Comprise valve body 1; Valve body is that vermicular cast iron is processed, and is provided with decompressor, pressure control damping device, shift-position control apparatus, double speed secondary pressure control gear, overload protection arrangement and oil transportation panel assembly in the valve body and forms, and is communicated with through valve body oil groove or oil transportation leaf fat road between each device.
Decompressor includes relief spring 2, decompression valve rod 3; The decompressor outside is by 4 sealings of double speed valve; Decompressor is provided with oil suction chamber and oil back chamber, and the filler opening of oil suction chamber is located at the bottom surface of valve body 1, and is communicated with the gearbox oil supply system through dividing plate, oil transportation plate; The return opening and the filler opening of oil back chamber are arranged side by side, and it is communicated with torque-converters through dividing plate, oil transportation plate.
The pressure control damping device comprises the pressure control valve rod 6 that is located in the valve body; Pressure control spring 7 is housed in the endoporus of pressure control valve rod; Pressure control valve rod overcoat is equipped with accumulation of energy balance spring 8, and the other end of accumulation of energy balance spring is packed in the accumulation of energy equilibrium valve 9, and also is provided with pressure regulator valve bar 10 in the valve body of pressure control damping device par position; Pressure regulator valve bar spring 11 is equipped with in the pressure regulator valve bar outside, and accumulation of energy equilibrium valve, the pressure regulator valve bar spring outside are by double speed valve 4.
Shift-position control apparatus is made up of 5 gear control spools 12 and 5 gear control springs 13; Every group of gear control valve all is installed in the valve opening; The gear control valve of 5 combinations respectively with valve body in oil groove, oil transportation plate leaf fat road, working connection, oil back chamber be communicated with, the gear control valve of 5 combinations is connected with 5 solenoid valves 18.
Double speed secondary pressure control gear is installed in the downside of valve body, and double speed secondary pressure control gear includes double speed valve body 14, establishes locking oiling valve, locking pressure regulator valve, locking control valve in the double speed valve body, and the oil circuit between each valve pocket is communicated with; The locking oiling valve is made up of locking small valve core 15, locking little spring 16 and fittings body 17, and fittings body is connected with oil pipe with solenoid valve 18 actuator ports, and the oil inlet hole of locking small valve core oil suction chamber bottom surface is connected with the oil suction chamber of decompressor; The locking pressure regulator valve is made up of with plug screw 22 locking spool 19, spring 20, pressure regulation pad 21, and the valve pocket bottom surface oil inlet hole of locking pressure regulator valve is communicated with the pressure control damping device; Be provided with locking control valve piece 23 and push rod 5 in the locking control valve.
Overload protection arrangement is made up of the outer oil return overload protection arrangement of oil return overload protection arrangement and externally connected type in the externally connected type.
Like Fig. 3; The oil return overload protection arrangement includes the first oil-feed valve body 24 in the externally connected type; The first oil-feed valve body connects to establish on first Safety valve body, 25, the first oil-feed valve bodies establishes first safety valve 28 that can the first oil-feed valve port 26 and first return opening, 27 oil circuits are communicated with or cut off in the first oil-feed valve port 26 and first return opening, 27, the first oil-feed valve bodies; First safety valve is connected on first Safety valve body through first safety valve spring 29, and first return opening is communicated with drainback passage on the valve body.
Like Fig. 4, the outer oil return overload protection arrangement of externally connected type includes the second oil-feed valve body, 31, the second oil-feed valve bodies and connects second Safety valve body 32; Have second filler opening 33 on the second oil-feed valve body; Have on second Safety valve body and establish in second return opening, 34, the second Safety valve bodies and can second safety valve, 35, the second safety valves of second filler opening sealing be connected on the lining 30 through second safety valve spring 36; Lining is located in second Safety valve body, and second return opening is communicated with fuel tank.
During use, run into working oil path when raising suddenly, first safety valve 28 can be opened automatically, makes first filler opening 26 be communicated with first return opening 27 and carries out release, has guaranteed the safe handling of gearbox.Second safety valve 35 also can be opened automatically simultaneously, makes second filler opening 33 be communicated with second return opening 34 and carries out release, has guaranteed the safe handling of gearbox.
The above is merely the specific embodiment of the utility model; But the structure characteristic of the utility model is not limited thereto; Any those skilled in the art is in the field of the utility model, and variation of being done or modification all are encompassed among the claim of the utility model.
Claims (8)
1. a new type of engineering mechanical electro-hydraulic is controlled the speed change control valve; Comprise valve body (1); It is characterized in that described valve body (1) processes for vermicular cast iron; Be provided with decompressor, pressure control damping device, shift-position control apparatus, double speed secondary pressure control gear, overload protection arrangement and oil transportation panel assembly in the valve body and form, be communicated with through valve body oil groove or oil transportation leaf fat road between each device.
2. new type of engineering mechanical electro-hydraulic control speed change control valve according to claim 1; It is characterized in that described decompressor includes relief spring (2), decompression valve rod (3); The decompressor outside is by double speed valve (4) or cover plate for sealing; Decompressor is provided with oil suction chamber and oil back chamber, and the filler opening of oil suction chamber is located at the bottom surface of valve body (1), and is communicated with the gearbox oil supply system through dividing plate, oil transportation plate; The return opening and the filler opening of oil back chamber are arranged side by side, and it is communicated with torque-converters through dividing plate, oil transportation plate.
3. new type of engineering mechanical electro-hydraulic control speed change control valve according to claim 1 and 2; It is characterized in that described pressure control damping device comprises the pressure control valve rod (6) that is located in the valve body (1); Pressure control spring (7) is housed in the endoporus of pressure control valve rod; Pressure control valve rod overcoat is equipped with accumulation of energy balance spring (8); The other end of accumulation of energy balance spring is packed in the accumulation of energy equilibrium valve (9); With also be provided with pressure regulator valve bar (10) in the valve body of pressure control damping device par position, pressure regulator valve bar spring (11) is equipped with in the pressure regulator valve bar outside, accumulation of energy equilibrium valve, the pressure regulator valve bar spring outside are by double speed valve (4) or cover plate for sealing.
4. new type of engineering mechanical electro-hydraulic control speed change control valve according to claim 1 and 2; It is characterized in that described shift-position control apparatus is controlled spools (12) by 5 gears and 5 gear control springs (13) are formed; Every group of gear control valve all is installed in the valve opening; The gear control valve of 5 combinations is communicated with interior oil groove, oil transportation plate leaf fat road, working connection, the oil back chamber of valve body (1) respectively, and the gear control valve of 5 combinations is connected with 5 solenoid valves (18).
5. new type of engineering mechanical electro-hydraulic control speed change control valve according to claim 1 and 2; It is characterized in that described double speed secondary pressure control gear is installed in the downside of valve body (1); Double speed secondary pressure control gear includes double speed valve body (14); Establish locking oiling valve, locking pressure regulator valve, locking control valve in the double speed valve body, the oil circuit between each valve pocket is communicated with; The locking oiling valve is made up of locking small valve core (15), locking little spring (16) and fittings body (17), and fittings body is connected with oil pipe with solenoid valve (18) actuator port, and the oil inlet hole of locking small valve core oil suction chamber bottom surface is connected with the oil suction chamber of decompressor; The locking pressure regulator valve is made up of with plug screw (22) locking spool (19), spring (20), pressure regulation pad (21), and the valve pocket bottom surface oil inlet hole of locking pressure regulator valve is communicated with the pressure control damping device; Be provided with locking control valve piece (23) and push rod (5) in the locking control valve.
6. new type of engineering mechanical electro-hydraulic according to claim 1 and 2 control speed change control valve, it is characterized in that described overload protection arrangement by oil return overload protection arrangement and externally connected type in the externally connected type outward the oil return overload protection arrangement form.
7. new type of engineering mechanical electro-hydraulic control speed change control valve according to claim 6; It is characterized in that the oil return overload protection arrangement includes the first oil-feed valve body (24) in the described externally connected type; The first oil-feed valve body connects first Safety valve body (25); Establish the first oil-feed valve port (26) and first return opening (27) on the first oil-feed valve body; Establish first safety valve (28) that can the first oil-feed valve port (26) and first return opening (27) oil circuit are communicated with or cut off in the first oil-feed valve body, first safety valve is connected on first Safety valve body through first safety valve spring (29), and first return opening is communicated with drainback passage on the valve body (1).
8. new type of engineering mechanical electro-hydraulic control speed change control valve according to claim 6; It is characterized in that the outer oil return overload protection arrangement of described externally connected type includes the second oil-feed valve body (31); The second oil-feed valve body connects second Safety valve body (32), has second filler opening (33) on the second oil-feed valve body, has second return opening (34) on second Safety valve body; Establishing in second Safety valve body can be with second safety valve (35) of second filler opening sealing; Second safety valve is connected on the lining (30) through second safety valve spring (36), and lining is located in second Safety valve body, and second return opening is communicated with fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201194265U CN202510442U (en) | 2012-03-27 | 2012-03-27 | Novel engineering machinery electrohydraulic control variable speed control valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201194265U CN202510442U (en) | 2012-03-27 | 2012-03-27 | Novel engineering machinery electrohydraulic control variable speed control valve |
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| CN202510442U true CN202510442U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201194265U Expired - Lifetime CN202510442U (en) | 2012-03-27 | 2012-03-27 | Novel engineering machinery electrohydraulic control variable speed control valve |
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Cited By (6)
| 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 |
| CN105351269A (en) * | 2015-11-12 | 2016-02-24 | 贵州凯星液力传动机械有限公司 | Main control valve of gearbox |
| CN106015655A (en) * | 2016-07-12 | 2016-10-12 | 杭州普微液压技术有限公司 | Automatic voltage adjustment multi-way hydraulic reverse valve and operation method thereof |
| CN110864028A (en) * | 2019-11-28 | 2020-03-06 | 宁波文泽机电技术开发有限公司 | Engineering machinery damping control valve |
| CN111828422A (en) * | 2020-07-14 | 2020-10-27 | 江苏汇智高端工程机械创新中心有限公司 | Integrated control valve block for power gear shifting gearbox |
| CN112303220A (en) * | 2020-07-03 | 2021-02-02 | 杭州萧山叉车配件有限公司 | Electro-hydraulic proportional variable speed control valve |
-
2012
- 2012-03-27 CN CN2012201194265U patent/CN202510442U/en not_active Expired - Lifetime
Cited By (9)
| 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 |
| CN105351269A (en) * | 2015-11-12 | 2016-02-24 | 贵州凯星液力传动机械有限公司 | Main control valve of gearbox |
| CN105351269B (en) * | 2015-11-12 | 2017-12-22 | 贵州凯星液力传动机械有限公司 | A kind of gearbox main control valve |
| CN106015655A (en) * | 2016-07-12 | 2016-10-12 | 杭州普微液压技术有限公司 | Automatic voltage adjustment multi-way hydraulic reverse valve and operation method thereof |
| CN106015655B (en) * | 2016-07-12 | 2019-03-05 | 杭州发达齿轮箱集团有限公司 | A kind of automatic Regulation multipath hydraulic change-over valve and its operating method |
| CN110864028A (en) * | 2019-11-28 | 2020-03-06 | 宁波文泽机电技术开发有限公司 | Engineering machinery damping control valve |
| CN110864028B (en) * | 2019-11-28 | 2021-05-11 | 上海诺玛液压系统有限公司 | Engineering machinery damping control valve |
| CN112303220A (en) * | 2020-07-03 | 2021-02-02 | 杭州萧山叉车配件有限公司 | Electro-hydraulic proportional variable speed control valve |
| CN111828422A (en) * | 2020-07-14 | 2020-10-27 | 江苏汇智高端工程机械创新中心有限公司 | Integrated control valve block for power gear shifting gearbox |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |
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| CX01 | Expiry of patent term |