CN202108981U - Novel power cut-off speed changing operating valve - Google Patents
Novel power cut-off speed changing operating valve Download PDFInfo
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- CN202108981U CN202108981U CN2011201898288U CN201120189828U CN202108981U CN 202108981 U CN202108981 U CN 202108981U CN 2011201898288 U CN2011201898288 U CN 2011201898288U CN 201120189828 U CN201120189828 U CN 201120189828U CN 202108981 U CN202108981 U CN 202108981U
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Abstract
The utility model relates to an operating valve, particularly to a novel power cut-off speed changing operating valve, which mainly solves the technical problems of the prior art that the speed changing operating valve has poor safety and energy-saving effect, includes a valve body (1), and is characterized in that a gear controlling mechanism, a power cut-off mechanism and a pressure-reducing and buffering mechanism are arranged on the valve body (1), wherein a leading needle valve throttle nozzle device, an overload protection mechanism, and a blockage junction surface oil penetration mechanism are arranged on the pressure-reducing and buffering mechanism, and all the mechanisms are communicated through a main oil circuit (2).
Description
Technical field
The utility model relates to a kind of control valve, especially relates to a kind of new type power and cuts off the speed change control valve.
Background technique
The engineer machinery operation operating mode is more abominable, and running condition is complicated, and gearshift is frequent.With the loader is example, and each work cycle need be shifted gears 4～5 times, works continuously and per hour shifts gears nearly thousand times.At present, the shift control system used of domestic engineering machinery mostly adopts machine liquid shift control.Chinese patent discloses a kind of improvement (notice of authorization number: CN 2934777Y) of speed change control valve; It comprises valve body, air valve body, distribution valve rod, brake valve rod; In valve body, the pressure-regulating portion separation structure is separated, be divided into partly two parts of the partly gentle modulated of the pressure regulation that does not directly link to each other, pressure regulation is partly in the left side; The buffering modulation only has oil circuit to communicate between the two partly on the right side; It is uncovered that the end that regulator is the test tube shape for overflow spool in the valve body respective aperture seals an end; Wherein closed end leaves that the bottom surface is a bit of to have a convex shoulder; On this convex shoulder, be shaped on an aperture that vertically runs through convex shoulder; Pressure adjusting spring is arranged in the overflow spool bore, and an end is supported on the overflow spool closed end the other end and is supported on valve body; The buffering rectifying means is by relief pressure valve cartridge, damping spring.The accumulator guiding valve is formed, and in the valve body respective aperture, relief pressure valve cartridge is positioned at the left side; The right section of relief pressure valve cartridge is shaped on endoporus has convex shoulder outward; The accumulator guiding valve is positioned at the right side, and the accumulator guiding valve is that the tubbiness bung is between cover the relief pressure valve cartridge inner orifice, damping spring is located at the bottom of relief pressure valve cartridge convex shoulder and the accumulator spool valve; The right section of relief pressure valve cartridge is shaped on endoporus; Be shaped on two through holes that cross said endoporus on this section relief pressure valve cartridge, near wherein left through hole was positioned at the bottom of the endoporus, right through hole was positioned under the damping spring of convex shoulder right side; Distribute the valve rod revealed section to add Embedded dust protection rubber cover, this dust protection rubber cover is telescopic corrugated hose, and the one of which end is enclosed within on the spindle nose that distributes valve rod, and the other end is embedded into valve body to be blocked with jump ring.Though this speed change control valve is structure improvement repeatedly, gearbox is operation in abominable operating mode for a long time, makes the speed change control valve still expose many shortcomings.
The model utility content
The utility model provides a kind of new type power and cuts off the speed change control valve, and it mainly is to solve the Security of existing in prior technology speed change control valve, the technical problem of energy-saving effect difference etc.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
The new type power of the utility model cuts off the speed change control valve; Comprise valve body; Described valve body is provided with position control mechanism, power cut mechanism, pressure-reducing cushioning equipment mechanism; Locate to be provided with to dredge needle-valve flow nipple device, overload protecting mechanism, blocking-up junction plane oil impregnate mechanism in pressure-reducing cushioning mechanism, be communicated with through working connection between said each mechanism.
As preferably, described position control mechanism includes the manipulation valve rod, handles valve rod and is provided with some arc grooves; Establish first steel ball in the groove, establish first spring between first steel ball and the valve inner, the first spring outer end has the one 0 RunddichtringO and the oil sealing of plug screw envelope to fix; Be provided with sealed support between control valve pull handle position and the valve opening, the ring-like groove of peripheral hardware in the sealed support, internal/external ring type groove setting-in the 20 RunddichtringO and the 30 RunddichtringO are formed seal ring; Adorn first outside framework oil seal in the seal ring outside; First outside framework oil seal is adorned second outside framework oil seal outward, and second outside framework oil seal outside is fixed with jump ring, handles the valve rod portion of exposing and establishes the flexible ripple rubber boot of external clamping type; The flexible big end of ripple rubber boot of external clamping type is stuck in outward on the ring-like groove of valve body, and small end is enclosed within on the ring shaped slot of handling the valve rod spindle nose.The 0 RunddichtringO blocking-up valve body pressure oil of the seal ring outer channel of dual-oil seal combination sealing arrangement is from oil impregnate between valve opening and the seal ring when work; Seal ring internal channel 0 type circle blocking-up valve body internal pressure oil is from oil impregnate between valve rod and the seal ring; Combined sealing ring seals as the basis, and the one the second outside framework oil seals are as auxiliary seal.The axial move left and right switch operating gear of control valve.The steering force of control valve is set in 110-130N, and steering force can be adjusted less than the 150N scope according to the pretightening force of spring.
As preferably, described power cut mechanism comprises the brake spring that is located in the valve body intermediate hole, dress brake valve rod in the brake spring; The outside valve body screw mouth jointing body of brake valve rod is fixed on the valve body, dress plunger in the fittings body, and fittings body outside internal thread connects air valve seat; Air valve seat endoporus dress air valve stem, air valve seat is threaded with air valve body, in the air valve body cavity; The big end of air valve stem outside dress air valve body spring; The pressure pad sheet is debug in the air valve body spring outside, and the air valve seat top has screw socket to connect the air valve bolt, and the outer surface of air valve seat connects second track bolt.When power cut valve closed condition; Being contained in spring for valve compression in the air valve body promotes air valve stem and heads on the brake valve rod with plunger and inwardly move axially along the valve opening that brakes; Cutting off working connection (working oil path) makes working connection (working oil path) be communicated with oil back chamber; At this moment main oil pressure (operating oil pressure) is 0Mpa, and the main oil pressure of speed change control valve is set in 1.1-1.5 Mpa.Reach in this state and start loader, even if under speed change control valve engage a gear state, because main oil pressure is cut off, loader can not be walked, and has improved the reliability of safety work.Reached loader under the motor starting state during not operation or operation gap, the cut-off valve that do not turn on the power, the main oil pressure of speed change control valve are 0Mpa; The speed change control valve; Gearbox hydraulic system speed change oil pump circulates under low-voltage load, has reached to reduce the oil temperature, and it is aging to delay rubber seal; Reduce the wearing and tearing of part and variable speed pump, more significantly energy-saving effect is obvious.When needs turned on the power cut-off valve, usefulness >=0.45Mpa air pressure got between air valve seat and the air valve stem from the air valve seat second track bolt suction port, makes it to form high pressure; Residual gas in the air valve body is discharged from the first bolt interface, spring for valve by compression, air valve stem moves outward; At this moment by the effect of brake spring; The brake valve rod is resetted, recover working connection and be communicated with the gear shift working oil path after making working connection cut off oil return, main oil pressure is based upon 1.1-1.5 Mpa of setting; The gearbox state of resuming work, loader can be walked.When needs cut off main oil pressure; Remove air pressure from air valve seat second track bolt,, under the thrust of spring for valve, promote air valve stem from the emergent air pressure of the first screwed joint interface entering >=0.45Mpa; Plunger; The brake valve rod inwardly moves axially, and cuts off working connection (working oil path) working connection is communicated with oil back chamber, and main oil pressure at this moment (working oil path) is promptly reduced to 0Mpa.
As preferably; Described pressure-reducing cushioning equipment mechanism includes decompression valve pocket, equalizing and buffering valve pocket; The filler opening that becomes control valve is located at the valve body bottom surface and is communicated with the decompression valve pocket; The reduction valve filler opening left side is established the decompression return opening and is removed torque-converters, establishes the decompression valve rod in the decompression valve pocket, and the decompression valve rod passes through relief spring) the interior accumulation of energy slide block of connection equalizing and buffering valve pocket.The decompression valve rod is established Φ 2mm regulator hole, is communicated with reduction valve filler opening and decompression valve opening sealing plug screw.When oil pump feed high pressure oil get into the oil-feed of reduction valve Φ 2mm regulator hole through with plug screw between form the pushed at high pressure reduction valve to the relief spring direction move to left (inwardly moving) make speed change control valve filler opening be communicated with decompression with return opening (removing torque-converters) hydraulic fluid port, the pressure of pressing the relief spring setting with the setting of speed change control valve main oil pressure between 1.1-1.5 Mpa.
As preferably; The described needle-valve flow nipple device of dredging includes the flow nipple that is communicated with the equalizing and buffering valve pocket; Throttle orifice in the flow nipple connects the working connection on equalizing and buffering valve pocket and valve body plane, be equipped with in the throttle orifice can be in throttle orifice easy on and off unsteady dredge needle-valve.Dredge needle-valve can be in throttle orifice easy on and off float, eliminated the oil product carbonizing matter, iron filings, torque-converters aluminium foam, with the hidden danger that throttle orifice stops up, the prevention throttle orifice fault that main oil pressure can not be set up that is blocked.Dredge needle-valve in the throttle orifice gearbox gear-shift is impacted the effect that has clear improvement.When speed change valve boosts after the gear shift of speed change control valve; One-way valve is closed automatically, through the throttle orifice oil-feed, makes to form pushed at high pressure accumulation of energy slide block between accumulator valve piece and the big plug screw and move to right and (inwardly move; The relief spring direction is moved) keep balance with reduction valve, main oil pressure is set up the pressure range of setting.When speed change control valve gear shift release, one-way valve is opened rapidly, and high pressure disappears between accumulation of energy slide block and the plug screw; The accumulation of energy slide block moves to left, (outwards move, big plug screw direction is moved); Because after the reduction valve disequilibrium, the high pressure between reduction valve and the plug screw, promote rapidly the decompression valve rod move to left (moving inward the relief spring direction moves) filler opening is dwindled; Form the connection of the filler opening left side and remove the torque-converters return opening; The right is communicated with the quick return opening of Φ 5mm and gets into oil back chamber, thereby main oil pressure is quickly fallen to below 0.5 Mpa from 1.1-1.5 Mpa that set rapidly, returns to setting pressure after the gear switch again rapidly; The step-down process time 0.8-1.6S of gear switch process has reached the good result that the gearbox flexibility is run in.
As preferably; Described overload protecting mechanism includes the safety valve oil circuit that is communicated with working connection; The safety valve oil circuit is communicated with safe valve pocket, and the safety valve steel ball is equipped with in safety valve oil circuit aperture, and the safety valve return opening of safe valve pocket is communicated with the oil back chamber of valve body; Safety valve spring withstands the safety valve steel ball, and the safety valve spring outside is by safety valve plug screw and spacers oil sealing.Safety valve spring is locked in the cracking pressure of safety valve 1.5 times of main oil pressure (working pressure); In the time of speed change control valve depressurized system malfunction and failure; Main oil pressure moment superelevation safety valve is opened release automatically, guarantees the gearbox safe handling, has safe and reliable advantage.
As preferably, described blocking-up junction plane oil impregnate mechanism comprises the low pressure oil-return groove that working connection is peripheral, and the low pressure oil-return groove is communicated with the oil back chamber of valve body.Working pressure 1.1-1.5 Mpa of working connection (working oil path); High pressure oil since for a long time the exosmosis that accumulates over a long period of the paper washer fibrous structure through gearbox casing and speed change valve body plane reduce to low pressure oil to the low pressure oil-return groove and get back to oil back chamber; Reach the effect of blocking-up oil impregnate, speed change is handled met the environmental requirement of not polluting operating environment.
Therefore, the utlity model has Security, characteristics such as energy-saving effect is better, and is simple and reasonable for structure.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model;
Accompanying drawing 2 is A-A cross-sectional view of Fig. 1;
Accompanying drawing 3 is B-B cross-sectional view of Fig. 1;
Accompanying drawing 4 is structural representations of the blocking-up junction plane oil impregnate mechanism of the utility model.
Component among the figure; Position and numbering: valve body 1; Working connection 2; Handle valve rod 3; First steel ball 4; First spring 5; The one 0 RunddichtringO 6; Plug screw envelope 7; Sealed support 8; The 20 RunddichtringO 9; The 30 RunddichtringO 10; First outside framework oil seal 11; Second outside framework oil seal 12; Jump ring 13; The external clamping type ripple rubber boot 14 that stretches; Brake spring 15; Brake valve rod 16; Air valve seat 17; Air valve stem 18; Air valve body spring 19; Pressure regulation pad 20; Air valve bolt 21; Decompression valve pocket 22; Equalizing and buffering valve pocket 23; Filler opening 24; Decompression return opening 25; Decompression valve rod 26; Relief spring 27; Accumulation of energy slide block 28; Flow nipple 29; Dredge needle-valve 30; Safety valve oil circuit 31; Safe valve pocket 32; Safety valve steel ball 33; Safety valve return opening 34; Oil back chamber 35; Safety valve spring 36; Safety valve plug screw 37; Pad 38; Low pressure oil-return groove 39; Brake valve rod 40; Second track bolt 41.
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 power cuts off the speed change control valve; Like Fig. 1; A valve body 1 is arranged; Valve body is provided with position control mechanism, power cut mechanism, pressure-reducing cushioning equipment mechanism, is provided with at pressure-reducing cushioning mechanism place and dredges needle-valve flow nipple device, overload protecting mechanism, blocking-up junction plane oil impregnate mechanism, is communicated with through working connection 2 between said each mechanism.
Position control mechanism: include and handle valve rod 3, handle valve rod and be provided with some arc grooves, establish first steel ball 4 in the groove; Establishing first spring, 5, the first spring outer ends between first steel ball and the valve inner has the one 0 RunddichtringO 6 and plug screw to seal 7 oil sealings to fix, be provided with sealed support 8 between control valve pull handle position and the valve opening; The ring-like groove of peripheral hardware in the sealed support; Internal/external ring type groove setting-in the 20 RunddichtringO 9 and the 30 RunddichtringO 10 are formed seal ring, adorn first outside framework oil seal, 11, the first outside framework oil seals in the seal ring outside and adorn second outside framework oil seal 12 outward; Second outside framework oil seal outside is fixing with jump ring 13; Handle the valve rod portion of exposing and establish the flexible ripple rubber boot 14 of external clamping type, the flexible big end of ripple rubber boot of external clamping type is stuck in outward on the ring-like groove of valve body 1, and small end is enclosed within on the ring shaped slot of handling the valve rod spindle nose.
Power cut mechanism: comprise the brake spring 15 that is located in valve body 1 intermediate hole, dress brake valve rod 40 in the brake spring, the outside valve body screw mouth jointing body of brake valve rod is fixed on the valve body; Dress plunger 16 in the fittings body, fittings body outside internal thread connects air valve seat 17, air valve seat endoporus dress air valve stem 18; Air valve seat is threaded with air valve body; In the air valve body cavity, the big end of air valve stem outside dress air valve body spring 19, pressure pad sheet 20 is debug in the air valve body spring outside; The air valve seat top has screw socket to connect air valve bolt 21, and the outer surface of air valve seat connects second track bolt 41.
Pressure-reducing cushioning equipment mechanism: include decompression valve pocket 22, equalizing and buffering valve pocket 23; The filler opening 24 that becomes control valve is located at the valve body bottom surface and is communicated with the decompression valve pocket; The reduction valve filler opening left side is established decompression return opening 25 and is removed torque-converters; Establish decompression valve rod 26 in the decompression valve pocket, the accumulation of energy slide block 28 that the decompression valve rod connects in the equalizing and buffering valve pocket through relief spring 27.
Dredge needle-valve flow nipple device: like Fig. 3; Include the flow nipple 29 that is communicated with equalizing and buffering valve pocket 23; Throttle orifice in the flow nipple connects the working connection 2 on equalizing and buffering valve pocket and valve body 1 plane, be equipped with in the throttle orifice can be in throttle orifice easy on and off unsteady dredge needle-valve 30.
Overload protecting mechanism: like Fig. 2; Include the safety valve oil circuit 31 that is communicated with working connection 2; The safety valve oil circuit is communicated with safe valve pocket 32, and safety valve steel ball 33 is equipped with in safety valve oil circuit aperture, and the safety valve return opening 34 of safe valve pocket is communicated with the oil back chamber 35 of valve body; Safety valve spring 36 withstands the safety valve steel ball, and the safety valve spring outside is by safety valve plug screw 37 and fixedly oil sealing of pad 38.
Blocking-up junction plane oil impregnate mechanism: like Fig. 4, comprise the low pressure oil-return groove 39 of working connection 2 peripheries, low pressure oil-return groove 39 is communicated with the oil back chamber 35 of valve body 1.
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 (7)
1. a new type power cuts off the speed change control valve; Comprise valve body (1); It is characterized in that described valve body (1) is provided with position control mechanism, power cut mechanism, pressure-reducing cushioning equipment mechanism; Locate to be provided with to dredge needle-valve flow nipple device, overload protecting mechanism, blocking-up junction plane oil impregnate mechanism in pressure-reducing cushioning mechanism, be communicated with through working connection (2) between said each mechanism.
2. new type power according to claim 1 cuts off the speed change control valve, it is characterized in that described position control mechanism includes manipulation valve rod (3), handles valve rod and is provided with some arc grooves; Establish first steel ball (4) in the groove; Establish first spring (5) between first steel ball and the valve inner, the first spring outer end has the one 0 RunddichtringO (6) and (7) oil sealing of plug screw envelope to fix, and is provided with sealed support (8) between control valve pull handle position and the valve opening; The ring-like groove of peripheral hardware in the sealed support; Internal/external ring type groove setting-in the 20 RunddichtringO (9) and the 30 RunddichtringO (10) are formed seal ring, adorn first outside framework oil seal (11) in the seal ring outside, and first outside framework oil seal is adorned second outside framework oil seal (12) outward; Second outside framework oil seal outside is fixing with jump ring (13); Handle the valve rod portion of exposing and establish the flexible ripple rubber boot (14) of external clamping type, the flexible big end of ripple rubber boot of external clamping type is stuck in outward on the ring-like groove of valve body (1), and small end is enclosed within on the ring shaped slot of handling the valve rod spindle nose.
3. new type power according to claim 1 cuts off the speed change control valve, it is characterized in that described power cut mechanism comprises the brake spring (15) that is located in valve body (1) intermediate hole, dress brake valve rod (40) in the brake spring; The outside valve body screw mouth jointing body of brake valve rod is fixed on the valve body; Dress plunger (16) in the fittings body, fittings body outside internal thread connects air valve seat (17), air valve seat endoporus dress air valve stem (18); Air valve seat is threaded with air valve body; In the air valve body cavity, the big end of air valve stem outside dress air valve body spring (19), pressure pad sheet (20) is debug in the air valve body spring outside; The air valve seat top has screw socket to connect air valve bolt (21), and the outer surface of air valve seat connects second track bolt (41).
4. new type power according to claim 1 cuts off the speed change control valve; It is characterized in that described pressure-reducing cushioning equipment mechanism includes decompression valve pocket (22), equalizing and buffering valve pocket (23); The filler opening (24) that becomes control valve is located at valve body (1) bottom surface and is communicated with the decompression valve pocket; The reduction valve filler opening left side is established decompression return opening (25) and is removed torque-converters; Establish decompression valve rod (26) in the decompression valve pocket, the decompression valve rod connects the accumulation of energy slide block (28) in the equalizing and buffering valve pocket through relief spring (27).
5. new type power according to claim 1 cuts off the speed change control valve; It is characterized in that the described needle-valve flow nipple device of dredging includes the flow nipple (29) that is communicated with equalizing and buffering valve pocket (23); Throttle orifice in the flow nipple connects the working connection (2) on equalizing and buffering valve pocket and valve body (1) plane, be equipped with in the throttle orifice can be in throttle orifice easy on and off unsteady dredge needle-valve (30).
6. new type power according to claim 1 cuts off the speed change control valve; It is characterized in that described overload protecting mechanism includes the safety valve oil circuit (31) that is communicated with working connection (2); The safety valve oil circuit is communicated with safe valve pocket (32); Safety valve steel ball (33) is equipped with in safety valve oil circuit aperture; The safety valve return opening (34) of safe valve pocket is communicated with the oil back chamber (35) of valve body, and safety valve spring (36) withstands the safety valve steel ball, and the safety valve spring outside is by safety valve plug screw (37) and fixedly oil sealing of pad (38).
7. new type power according to claim 1 cuts off the speed change control valve; It is characterized in that described blocking-up junction plane oil impregnate mechanism comprises the low pressure oil-return groove (39) that working connection (2) is peripheral, low pressure oil-return groove (39) is communicated with the oil back chamber (35) of valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201898288U CN202108981U (en) | 2011-06-08 | 2011-06-08 | Novel power cut-off speed changing operating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201898288U CN202108981U (en) | 2011-06-08 | 2011-06-08 | Novel power cut-off speed changing operating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202108981U true CN202108981U (en) | 2012-01-11 |
Family
ID=45434415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201898288U Expired - Fee Related CN202108981U (en) | 2011-06-08 | 2011-06-08 | Novel power cut-off speed changing operating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202108981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081164A (en) * | 2019-04-17 | 2019-08-02 | 杭州萧山叉车配件有限公司 | Loading machine gearbox shifting amortization multi-function variable-speed manipulates valve and its control method |
-
2011
- 2011-06-08 CN CN2011201898288U patent/CN202108981U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081164A (en) * | 2019-04-17 | 2019-08-02 | 杭州萧山叉车配件有限公司 | Loading machine gearbox shifting amortization multi-function variable-speed manipulates valve and its control method |
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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: 20120111 Termination date: 20190608 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |