CN106122143A - Loader power shift level 2 buffering handles valve - Google Patents

Loader power shift level 2 buffering handles valve Download PDF

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Publication number
CN106122143A
CN106122143A CN201610491262.1A CN201610491262A CN106122143A CN 106122143 A CN106122143 A CN 106122143A CN 201610491262 A CN201610491262 A CN 201610491262A CN 106122143 A CN106122143 A CN 106122143A
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CN
China
Prior art keywords
oil
valve
hole
braking
return opening
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Granted
Application number
CN201610491262.1A
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Chinese (zh)
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CN106122143B (en
Inventor
吴椒
吴戈
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HANGZHOU XIAOSHAN FORKLIFT PARTS CO Ltd
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HANGZHOU XIAOSHAN FORKLIFT PARTS CO Ltd
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Priority to CN201610491262.1A priority Critical patent/CN106122143B/en
Publication of CN106122143A publication Critical patent/CN106122143A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/0655Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides

Abstract

The present invention relates to a kind of manipulation valve, especially relate to a kind of loader power shift level 2 buffering and handle valve.It is poor that it mainly solves decompression absorption effect during the speed change operating valve high speed gear shift existing for prior art, it is impossible to meet loader technological transformation and the update of loader and other handling, transport, the technical problem of the supporting demand etc. of agricultural machinery.The present invention includes valve body (1), oil-in (2) is set on described valve body (1), lubrication oil-in (3), main pressure tap (4), decompression secondary buffer device, built-in braking device or fixed shaft type brake unit, positive direction gearshift or opposite direction gearshift is set, by working connection (106), working oil path (107), lubricant passage way (34), lubrication overflow oil circuit (108) connection between each device in valve body.

Description

Loader power shift level 2 buffering handles valve
Technical field
The present invention relates to a kind of manipulation valve, especially relate to a kind of loader power shift level 2 buffering and handle valve.
Background technology
Current China ZL20/30 loader universal supporting BS428 type system change speed gear box, this type system change speed gear box mostly uses fixed shaft type machine liquid shift control valve.Chinese patent discloses the improvement (Authorization Notice No.: CN20246850U) of a kind of speed change operating valve.Though this type system speed change operating valve is through repeatedly improveing, but during high speed gear shift, decompression absorption effect is poor, it is impossible to meet loader technological transformation and the update of loader and other handling, transport, the supporting demand of agricultural machinery.
Summary of the invention
The present invention is to provide a kind of loader power shift level 2 buffering and handles valve, it is poor that it mainly solves decompression absorption effect during the speed change operating valve high speed gear shift existing for prior art, it is impossible to meet loader technological transformation and the update of loader and other handling, transport, the technical problem of the supporting demand etc. of agricultural machinery.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals:
The loader power shift level 2 buffering of the present invention handles valve, including valve body, oil-in is set on described valve body, lubrication oil-in, main pressure tap, decompression secondary buffer device, built-in braking device or fixed shaft type brake unit, positive direction gearshift or opposite direction gearshift is set, by working connection, working oil path, lubricant passage way, lubrication overflow oil communication between each device in valve body.The power shift when present invention meets change speed gear box high speed.2) size for connection for present BS428 change speed gear box designs, and directly can undergo technological transformation old type tube change speed gear box, and versatility is good.The manipulation guiding valve of gearshift has positive and negative two directions to connect design, to meet the BS428 type system intrinsic needs of change speed gear box, the protecgulum handling guiding valve pull handle and decompression secondary buffer device unidirectional design for positive direction, handle guiding valve pull handle reduce pressure secondary buffer device to design for opposite direction.
As preferably, described working connection, working oil path, lubricant passage way, lubrication oil overflow route paper washer, bulkhead seal or pass a bridge connect with base plate, base plate and the faying face of change speed gear box sets decompression oil return opening, lubrication overflow outlet, reverse gear oil-out, the first lubrication oil-out, the second lubrication oil-out, the two grades of oil-outs that advance, the one grade of oil-out that advances, the 3rd lubricates oil-out, brake main oil leak hole, brake Residual oil hole, the first oil return opening, the second oil return opening, the 3rd oil return opening, the 4th oil return opening.
nullAs preferably,Described decompression secondary buffer device includes the first hole ring washer being located in valve body、Stop collar、Spacing jump ring,Decompression secondary buffer device is separated into the mechanism of decompressor and balance accumulating mechanism by it,In the mechanism of decompressor, dress controls spring successively、Control valve,Decompression oil return opening is set on the valve opening of control valve side,Control valve center sets main oil-hole,Control valve is spacing fixing by the second hole ring washer,Control valve peripheral hardware decompression oil-in,Sealed fixing by the 3rd O and relief chamber plug screw,Pressure reduction structure to the first hole ring washer outside balance accumulation of energy intracavity dress in piston,Cushioning balance oil return opening is set on interior valve opening below piston,Interior to the built-in big buffering energy-storaging spring of piston、Middle buffering energy-storaging spring、Limited block、Pressure-reducing cushioning little spring,Small baffle paper washer is filled on valve body、Small baffle、Protecgulum,The built-in export-oriented piston of protecgulum,It is sleeved on outside big buffering energy-storaging spring,Export-oriented piston sets damping hole,Working oil path outlet is through stop collar connection main oil-hole and unidirectional valve pocket,Check valve intracavity dress one-way valve spring、Check valve,Check valve holds out against the unidirectional valve opening on small baffle,Throttle orifice is set by one-way valve port,Unidirectional valve opening connects unidirectional valve pocket and accumulation of energy pressure regulating cavity with throttle orifice.Decompression secondary buffer device oil circuit connects, by the main oil-out of brake unit through dividing plate, through the working connection of base plate pass a bridge enter from decompression oil-in be located at valve body in reduce pressure the relief chamber of secondary buffer device, exporting through dividing plate from the working oil of secondary buffer device again, passing a bridge through the working oil path of base plate enters gearshift from working oil path import.The characteristics of principle of decompression level 2 buffering is: mechanism of decompressor device principal pressure is set to 1.40MPa-1.6MPa(principal pressure and can set by main frame requirement), when handling valve gear shift, after making principal pressure quickly fall to below 0.5MPa-0.2MPa, during about 0.3S, chien shih principal pressure is climbed to 0.6MPa-0.7MPa, account for the time period of pressure rising time about 25%, principal pressure is quickly initially set up;Principal pressure is about 0.6S after flex point occurs in 0.6MPa-0.7MPa, accounts for the time period of total pressure rising time about 50%, makes principal pressure rise to 0.95 MPa-1.05MPa gently, at this moment possesses the mild combination to gear clutch of speed-changing box friction;Principal pressure is about 0.3S after a flex point occurs again in 0.95 MPa-1.05MPa, account for total pressure rising time about 25% time period, principal pressure is climbed to again set principal pressure 1.40MPa-1.6MPa, at this moment possess friction plate fast-holding non-slip, thus smooth shifting, the flexibility of speed change box clutch when reaching change speed gear box high speed is run in.
Pressure oil is entered from decompression oil-in during decompression secondary buffer device work, high pressure is formed at oil suction chamber, pressure-reducing valve shaft is promoted inwardly to move, at this moment decompression oil return opening is opened, oil suction chamber connects rear section pressure oil with decompression oil return opening and enters torque-converters, (this part oil return also is used as lubrication oil or directly backs into fuel tank) by decompression oil return opening.Principal pressure is set in 1.40MPa ~ 1.6MPa (principal pressure can be set) by different main frame requirements afterwards by the main oil-hole entrance balance accumulating mechanism at control valve center by controlling spring.The mechanism of decompressor of decompression secondary buffer device, balance accumulating mechanism and gearshift are connected at working oil exit oil circuit, when gearshift hangs shelves or switching gear, working oil path have the working oil path oil cylinder of speed change box clutch (control) hydraulic oil being emptied by moment off-load and being switched full during working oil path, the main oil pressure of working connection synchronizes to decline rapidly, make to be in the pressure oil emptying of accumulation of energy oil pocket after the check valve decompression connected with working oil path is opened, accumulation of energy extroversion piston decompression returns to installation site, at this moment the main oil pressure in working oil path drops to below 0.5MPa from the 1.40MPa ~ 1.6MPa moment set rapidly.After completing to hang shelves or gear switch, main oil pressure increases, promote closed check valve check valve hydraulic fluid port, pressure oil in working oil path can only enter accumulation of energy oil pocket by throttle orifice, between accumulation of energy oil pocket and export-oriented piston, form the compression of pushed at high pressure extroversion piston buffer greatly energy-storaging spring, middle buffering energy-storaging spring, limited block and pressure-reducing cushioning little spring, turn down to piston in promoting or close equalizing and buffering oil return opening;The damping hole (buffering pressurized hole) of accumulation of energy extroversion piston centre plays the reequilibrate effect in boost process, overcomes the overshoot peak value of main oil pressure boosting moment.Main pressure tap is set, for the detection of buck-boost performance graph during to main frame transmission pressure signal and gear shift on valve body above working connection.
As preferably, described built-in braking device includes the oil-in being located on valve body, braking valve pocket it is provided with in valve body, brake valve intracavity fills brake valve plug screw, pressure regulation pad, spring base, the first O, tripping spring, braking guiding valve, braking cup, the second O, brake interface plug screw, brake interface, bleed screw gasket seal, bleed screw successively, setting axial Residual oil hole, radially Residual oil hole in braking guiding valve, brake valve intracavity is equipped with dynamic main oil leak hole, braking Residual oil hole.When loader operation needs emergency brake, after connecting brake fluid (gas) braking source, braking slide valve spindle inwardly moves cut-out working connection, change speed gear box quits work, and after removing braking source, tripping spring promotes braking guiding valve to reset, and working connection connects, change speed gear box is resumed work, thus ensures the safety work of loader.The brake unit of base type is based on built-in brake unit.
As preferably, described fixed shaft type brake unit includes the oil-in being located on valve body, braking valve pocket in valve body, brake valve intracavity sets shaft type braking guiding valve, axial Residual oil hole is set in braking guiding valve, radially Residual oil hole, A shelves are set spacing on braking guiding valve, B shelves are spacing, brake valve intracavity sets spacing hole, the built-in limit spring of spacing hole, spacing steel ball, brake valve intracavity sets main oil leak hole, pull handle Residual oil hole, braking Residual oil hole, braking valve pocket tail end dress braking screw plug sealing ring, braking screw plug, brake valve pull handle installs little spacing shim, little outside framework oil seal, 3rd hole ring washer.This brake structure is available for different Selection of chiller, one: spacing when B shelves working connection be normally closed design, even if at this moment starting main frame, change speed gear box will not work, it is necessary to just can open moving A shelves working connection outside braking guiding valve to, change speed gear box just can work, safe and reliable.Need to stop in emergency when operation, A shelves only need to be return B shelves, working connection cuts off, and the oil of working oil path disengages through the rapid off-load of main oil leak hole, gear clutch of speed-changing box, and change speed gear box quits work.Its two: spacing at A shelves, working connection is directly opened, as long as at this moment start main frame change speed gear box i.e. work, need to stop in emergency when operation, same as above do not repeat illustrate.
nullAs preferably,Described positive direction gearshift includes the manipulation valve pocket being located in valve body,Set positive direction in valve pocket and handle valve rod,Positive direction sets axial oil circuit in handling valve rod、First cross oilhole、Second cross oilhole,Reverse gear location is set on valve rod、Neutral gear positions、Previous shelves position、Four arc grooves in the first two shelves location,Some drain pans are set on the valve rod of reverse gear and the first two grade of outside,Locking ball is filled successively above arc groove、Location spring、Gasket seal、Location screw,The equidirectional positive direction that sets of protecgulum horizontal position handles valve rod pull handle,Spacing shim the most in tandem on pull handle、Outside framework oil seal、4th hole ring washer、Embedded guard shield,Positive direction handle valve rod pull handle to the built-in vexed plug of valve opening,It is embedded in vexed plug sealing ring,It is fixed in valve opening by the 5th hole ring washer,The 4th oil return opening is set in handling valve pocket、3rd oil return opening、Second oil return opening、First oil return opening,Through paper washer、Dividing plate connects with base plate,Reverse gear exports through reverse gear oil communication reverse gear oil-out,Advance one grade of oil-out through the one grade of oil communication one grade of oil-out of advance that advances,Advance two grades of oil-outs through the two grades of oil communication two grades of oil-outs of advance that advance,Working oil path import is through paper washer、Dividing plate is passed a bridge by connecing working oil outlet in working oil path on base plate.When handling valve rod and being positioned at neutral gear, working oil path does not connects with each gear oil circuit, handle valve rod when neutral gear (draw) switches to reverse gear, working oil path import is by first group of axial oilhole of cross oilhole, second group of cross oilhole and reverse gear outlet, hydraulic energy is transmitted from the reverse gear interface of valve body bottom surface to change speed gear box through reverse gear oil circuit, when reverse gear switches back into neutral gear, working oil path is cut off with reverse gear oil circuit, reverse gear oil communication the first oil return opening oil return unloading, change speed gear box reverse clutch separates, and change speed gear box quits work.Handle valve rod (inside pushing away) from neutral gear switch to advance one grade time, working oil path advances one grade of oil-out through handling the connection of stem ring grooving, and through advancing, one grade of oil circuit transmits liquid energy from one grade of interface of advance of valve body bottom surface to change speed gear box.When handling valve rod (in push away) and being switched to advance two grades from advancing one grade, working oil path is cut off with the one grade of oil circuit that advances, advance one grade of oil communication the 3rd oil return opening oil return unloading, while one grade of clutch of the advance of change speed gear box is rapidly separated, working oil path passes through second group of cross oilhole, axial oilhole, first group of cross oilhole connection two grades of oil-out of advance, through the two grades of oil circuits that advance, transmits hydraulic energy from two grades of interfaces of advance of valve body bottom surface to change speed gear box.Otherwise, then when being switched to advance one grade from advancing two grades, working oil path is cut off with the two grades of oil circuits that advance, and advance two grades of oil circuits and the 4th oil return opening oil return unloading, while two grades of clutches of the advance of change speed gear box are rapidly separated, working oil path connects work with advancing one grade.Again from advance one grade be switched to neutral gear time, advances one grade of oil circuit and through second group of cross oilhole, axial oilhole, first group of cross oilhole from the 3rd oil return opening oil return unloading, one grade of clutch separation of advancing, change speed gear box quits work.
As preferably, described opposite direction gearshift includes the manipulation valve pocket being located in valve body, set opposite direction in valve pocket and handle valve rod, the first cross oilhole is set in valve rod, axially oil circuit, second cross oilhole, reverse gear location is set on opposite direction valve rod, neutral gear positions, previous shelves position, the first two shelves positions, several drain pans are set in reverse gear and the first two grade of outside valve rod, locking ball is filled successively above arc detent, location spring, gasket seal, location screw, the outside of reverse gear sets opposite direction and handles valve rod pull handle, spacing shim the most in tandem on pull handle, outside framework oil seal, fix with the 5th hole ring washer.Handle valve rod pull handle suit dust cover, big end is buckled on the groove of valve body extending area, opposite direction handle valve rod pull handle to the built-in vexed plug of valve opening, vexed plug sealing ring it is embedded in vexed plug seal groove, it is fixed in valve opening by the 4th hole ring washer, the 4th oil return opening is set in handling valve pocket, 3rd oil return opening, second oil return opening, first oil return opening, through paper washer, dividing plate connects with base plate, reverse gear exports through reverse gear oil communication reverse gear oil-out, advance one grade of outlet through the one grade of oil communication one grade of oil-out of advance that advances, advance two grades of outlets through the two grades of oil communication two grades of oil-outs of advance that advance, working oil path import is through paper washer, dividing plate is passed a bridge by connecing working oil outlet in working oil path on base plate, band caudal peduncle with caudal peduncle opposite direction gearshift handles valve rod.Switch to backward gear from neutral gear, or switch back into neutral gear from backward gear.From neutral gear switch to advance one grade, advance two grades, or from advance two grades, one grade of operation principle switching back into neutral gear of advancing identical with positive direction gearshift, do not repeat elaboration.Manipulation valve rod caudal peduncle with caudal peduncle opposite direction gearshift is when reverse gear, and the caudal peduncle handling valve rod bumps against the reverse range signal switch arranged on complete machine, transmits reverse range signal to complete machine.Remaining function is same as described above.
Therefore, the present invention possesses the decompression secondary buffer device that can meet change speed gear box high speed motive force gear shift: the brake unit (two kinds of brake units are available for different choice of main machine) that built-in braking device or fixed shaft type guiding valve are handled;Positive direction connects or opposite direction connects the gearshift that two kinds of directions connect, (positive and negative two kinds of directions connect be available for different choice of main machine), still yet another advantage is that constant with the size for connection of former BS428 type system change speed gear box.It is characteristic of the invention that pressure-reducing cushioning performance is good, rational in infrastructure, braking, the device of gear shift possess double selection, and versatility is good, are suitable for the technological transformation of former BS428 type system change speed gear box while being suitable for new gear box development too.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of appearance schematic diagram of the present invention;
Accompanying drawing 2 is a kind of structural representation of the present invention;
Accompanying drawing 3 is the valve body bottom surface oil circuit figure of the present invention;
Accompanying drawing 4 is the positive direction gearshift schematic diagram of the present invention;
Accompanying drawing 5 is the opposite direction gearshift schematic diagram of the present invention;
Accompanying drawing 6 is the built-in braking device schematic diagram of the present invention;
Accompanying drawing 7 is the fixed shaft type brake unit schematic diagram of the present invention;
Accompanying drawing 8 is base plate oil circuit hydraulic fluid port schematic diagram of the present invention;
Accompanying drawing 9 is check valve of the present invention, throttle orifice enlarged diagram;
Accompanying drawing 10 is the side schematic view of the present invention;
Accompanying drawing 11 is the positive direction gearshift outline drawing of the present invention;
Accompanying drawing 12 is the opposite direction gearshift outline drawing of band caudal peduncle of the present invention.
nullParts in figure、Position and numbering: valve body 1,Oil-in 2,Lubricating oil inlet 3,Main pressure tap 4,Protecgulum 5,Small baffle 6,Plintlet paper washer 7,Decompression oil-in 8,Main oil-hole 9,Decompression oil return opening 10,Working oil outlet 11,Stop collar 12,Spacing jump ring 13,First hole ring washer 14,Control spring 15,Control valve 16,Second hole ring washer 17,Relief chamber plug screw 18,3rd O 19,Balance accumulation of energy chamber 20,Interior to piston 21,Big buffering energy-storaging spring 22,Middle buffering energy-storaging spring 23,Limited block 24,Pressure-reducing cushioning little spring 25,Export-oriented piston 26,Damping hole 27,Unidirectional valve pocket 28,One-way valve spring 29,Check valve 30,Throttle orifice 31,Unidirectional valve opening 32,Accumulation of energy pressure regulating cavity 33,Lubricant passage way 34,Reverse gear oil circuit 35,Previous shelves oil circuit 36,The first two grade of oil circuit 37,4th oil return opening 38,3rd oil return opening 39,Second oil return opening 40,First oil return opening 41,Main oil-out 42,Working oil path import 43,Main oil leak hole 44,Residual oil hole 45,Previous shelves outlet 46,The first two shelves outlet 47,Reverse gear outlet 48,Equalizing and buffering oil return opening 49,Equalizing and buffering oil return line 50,Handle valve pocket 51,Positive direction handles valve rod 52,First cross oilhole 53,Axially oil circuit 54,Second cross oilhole 55,Reverse gear location 56,Neutral gear location 57,Previous shelves location 58,The first two shelves location 59,Drain pan 60,Locking ball 61,Location spring 62,Gasket seal 63,Bolt 64,Vexed plug 65,Vexed plug sealing ring 66,Positive direction handles valve rod pull handle 67,Embedded guard shield 68,4th hole ring washer 69,5th hole ring washer 70,Opposite direction handles valve rod 71,Outside framework oil seal 72,Dust cover 73,Braking valve pocket 74,Braking guiding valve 75,Brake valve axial Residual oil hole 76,Brake valve radially Residual oil hole 77,Brake valve leather cup 78,Second O 79,Brake interface plug screw 80,Brake interface 81,Bleed screw 82,Bleed screw gasket seal 83,Brake main oil leak hole 84,Braking Residual oil hole 85,Tripping spring 86,Spring base 87,First O 88,Pressure regulation pad 89,Braking plug screw 90,Fixed shaft type braking guiding valve 91,Pull handle Residual oil hole 92,Brake valve pull handle 93,3rd hole ring washer 94,Little outside framework oil seal 95,Little spacing shim 96,Dead axle braking valve pocket 97,B shelves spacing 98,A shelves spacing 99,Braking screw plug sealing ring 100,Braking screw plug 101,Spacing steel ball 102,Limit spring 103,Spacing hole 104,Braking Residual oil hole 105,Working connection 106,Working oil path 107,Lubrication overflow oil circuit 108,Decompression oil return outlet 109,Lubrication overflow outlet 110,Reverse gear oil-out 111,First lubricating outlet 112,Second lubrication oil-out 113,Advance two grades of oil-outs 114,Advance one grade of oil-out 115,3rd lubrication oil-out 116,Dividing plate paper washer 117,Dividing plate 118,Base plate 119,Opposite direction with caudal peduncle handles valve rod 120.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
Embodiment 1: the loader power shift level 2 buffering of this example handles valve, as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 8, valve body 1 sets oil-in 2, lubricates oil-in 3, main pressure tap 4.Set built-in braking device (fixed shaft type braking device embodiments 2 illustrates) opposite direction gearshift (positive direction gearshift embodiment 3 illustrates) decompression secondary buffer device in valve body, connected by working connection 106, working oil path 107, lubricant passage way 34, lubrication overflow oil circuit 108 between each device.Decompression oil return outlet 109, lubrication overflow outlet 110, reverse gear oil-out 111 is set on described base plate 119, first lubrication oil-out 112, the second lubrication oil-out 113, advance two grades of oil-outs 114, advance one grade of oil-out 115,3rd lubrication oil-out 116, brakes main oil leak hole 84, braking Residual oil hole 85, the first oil return opening 41, second oil return opening 40,3rd oil return opening 39, the 4th oil return opening 38, docks with each function oil circuit of change speed gear box.
Such as Fig. 1, Fig. 2, shown in Fig. 6, built-in braking device includes the oil-in 2 being located on valve body 1, dynamic valve pocket 74 it is equipped with in valve body, brake valve intracavity fills braking plug screw 90 successively, pressure regulation pad 89, spring base 87, spring seat slot is embedded fills the first O 88, spring base tripping spring in tandem 86, braking guiding valve 75, axial Residual oil hole 76 is set in braking guiding valve, radially Residual oil hole 77, braking cup 78, second O 79, it is inlaid in the plane groove of brake interface plug screw 80, mobile interface 81 it is equipped with on brake interface plug screw, bleed screw gasket seal 83 is set on braking guiding valve, bleed screw 82, brake valve intracavity below braking guiding valve is equipped with dynamic main oil leak hole 84, braking Residual oil hole 85.
Such as Fig. 1, Fig. 2, opposite direction gearshift shown in Fig. 5, including the manipulation valve pocket 51 being located in valve body 1, set opposite direction in handling valve pocket and handle valve rod 71, the first cross oilhole 53 is set in opposite direction valve rod, axially oil circuit 54, second cross oilhole 55, opposite direction is handled and is set reverse gear location 56 on valve rod, neutral gear location 57, previous shelves location 58, the first two shelves location 59, several drain pans 60 are set on the valve rod of reverse gear and the first two grade of outside, locking ball 61 is filled successively above arc detent, location spring 62, gasket seal 63, location screw 64, set opposite direction outside reverse gear direction and handle valve rod pull handle 67, pull handle spacing shim the most in tandem 74, outside framework oil seal 72, it is fixed in manipulation valve opening with the 5th hole ring washer 70.Opposite direction handles valve rod pull handle suit dust cover 73, and big end is buckled on the groove of valve body extending area.Opposite direction handle valve rod pull handle to the built-in vexed plug 66 of valve opening, be embedded in vexed plug sealing ring 66 in vexed plug seal groove, the 4th hole ring washer 69 be fixed in valve opening.Set the 4th oil return opening 38, the 3rd oil return opening 39, the second oil return opening 40, the first oil return opening 41 in handling valve pocket, connect with base plate 119 through paper washer 117, dividing plate 118.As shown in Fig. 3, Fig. 8, the reverse gear outlet 48 of opposite direction gearshift is through reverse gear oil circuit 35, connecting with the reverse gear oil-out 111 on base plate through paper washer dividing plate, one grade of outlet 46 of advancing connects with the one grade of oil-out 115 of advance on base plate through paper washer dividing plate through the one grade of oil circuit 36 that advances.Two grades of outlets 47 of advancing connect with the two grades of oil-outs 114 of advance on base plate through paper washer, dividing plate through the two grades of oil circuits 37 that advance.Working oil path import 43 is passed a bridge by connecing working oil outlet 11 in the working oil path 107 on base plate through paper washer, dividing plate.As shown in figure 12, the manipulation valve rod 120 of band caudal peduncle.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 9, decompression secondary buffer device is made up of the mechanism of decompressor being located in valve body 1 and balance accumulating mechanism.By the first hole ring washer 14, stop collar 12, spacing jump ring 13 in described valve body 1, decompression secondary buffer device is separated into the mechanism of decompressor and balance accumulating mechanism.In the mechanism of decompressor, dress controls spring 15, control valve 16 successively, setting decompression oil return opening 10 on the valve opening of control valve side, control valve center sets main oil-hole 19, and control valve is spacing fixing by the second hole ring washer 17, control valve peripheral hardware decompression oil-in 8, outside is sealed fixing by the 3rd O and relief chamber plug screw 18.nullPressure reduction structure to the first hole ring washer outside balance accumulation of energy chamber 20 built-in interior to piston 21,Cushioning balance oil return opening 49 is set on interior valve opening below piston,Interior to the built-in big buffering energy-storaging spring 22 of piston、Middle buffering energy-storaging spring 23、Limited block 24 and pressure-reducing cushioning little spring 25,Small baffle paper washer 7 is filled on valve body、Small baffle 6,Outside dress protecgulum 5,The built-in export-oriented piston 26 of protecgulum,Export-oriented piston bush is contained in outside big buffering energy-storaging spring,The centre of export-oriented piston sets damping hole 27,Working oil path outlet 11 is through stop collar connection main oil-hole and unidirectional valve pocket 28,As Fig. 9 amplifies shown check valve intracavity dress one-way valve spring 29、Check valve 30,Check valve holds out against the unidirectional valve opening 32 on small baffle 7,Throttle orifice 31 is set by one-way valve port,Unidirectional valve opening connects unidirectional valve pocket and accumulation of energy pressure regulating cavity 33 with throttle orifice.
Embodiment 2: the loader power shift level 2 buffering of this example handles valve, such as Fig. 1, shown in Fig. 7, including the oil-in 2 being located on valve body 1, setting shaft braking valve pocket 97 in valve body, dead axle brake valve intracavity sets shaft type braking guiding valve 91, axial Residual oil hole 76 is set in braking guiding valve, the most residual hole 77, A shelves spacing 99 are set on braking guiding valve, B shelves spacing 98, valve opening corresponding below limited impression sets spacing hole 104, the built-in limit spring of spacing hole 103, spacing steel ball 102, braking valve pocket sets main oil leak hole 54, pull handle Residual oil hole 92, braking Residual oil hole 105, braking valve pocket tail end is by braking screw plug sealing ring 100, braking screw plug 101 seals fixing, brake valve pull handle 93 installs little spacing shim 96, little outside framework oil seal 95, fixed by the 3rd hole ring washer 94.
Remaining is identical with enforcement row 1.
Embodiment 3: the loader power shift level 2 buffering of this example handles valve, as shown in Figure 1, Figure 2, shown in Fig. 4, Figure 11, positive direction gearshift includes the manipulation valve pocket 51 being located in valve body 1, set positive direction in handling valve pocket and handle valve rod 52, positive direction sets axial oil circuit the 54, first cross oilhole 53 in handling valve rod, second cross oilhole 55, valve rod sets reverse gear location 56, neutral gear location 57, previous shelves location 58,59 4 arc grooves in the first two grade of location.Several drain pans 60 are set on the valve rod of reverse gear and the first two grade of outside, locking ball 61, location spring 62, gasket seal 63, location screw 64, protecgulum 5 is filled successively above arc detent, the equidirectional positive direction that sets of horizontal position handles valve rod pull handle 67, spacing shim 74 the most in tandem, outside framework oil seal the 71, the 4th hole ring washer 69, embedded guard shield 68 on pull handle, positive direction handle valve rod pull handle to the built-in vexed plug 65 of valve opening, it is embedded in vexed plug sealing ring 66, is sealed fixing by the 5th hole ring washer 70 outward.Set the 4th oil return opening 38, the 3rd oil return opening 39, the second oil return opening 40, the first oil return opening 41 in handling valve pocket, connect with base plate 119 through paper washer 117, dividing plate 118.As shown in Fig. 3, Fig. 8, the reverse gear outlet 48 of positive direction gearshift, through reverse gear oil circuit 35, connects with the reverse gear oil-out 111 on base plate through paper washer, dividing plate.One grade of outlet 46 of advancing connects with the one grade of oil-out 115 of advance on base plate through paper washer dividing plate through the one grade of oil circuit 36 that advances, and two grades of outlets 47 of advancing connect with the two grades of oil-outs 114 of advance on base plate through paper washer, dividing plate through the two grades of oil circuits 37 that advance.Working oil path import 43 is passed a bridge by connecing working oil outlet 11 in the working oil path 107 on base plate through paper washer, dividing plate.
Remaining is same as in Example 1.
The foregoing is only the specific embodiment of the present invention, but the architectural feature of the present invention is not limited thereto, any those skilled in the art is in the field of the invention, and change or the modification made all are contained among the scope of the claims of the present invention.

Claims (7)

1. a loader power shift level 2 buffering handles valve, including valve body (1), it is characterized in that setting oil-in (2) on described valve body (1), lubrication oil-in (3), main pressure tap (4), decompression secondary buffer device, built-in braking device or fixed shaft type brake unit, positive direction gearshift or opposite direction gearshift is set, by working connection (106), working oil path (107), lubricant passage way (34), lubrication overflow oil circuit (108) connection between each device in valve body.
nullLoader power shift level 2 buffering the most according to claim 1 handles valve,It is characterized in that described working connection (106)、Working oil path (107)、Lubricant passage way (34)、Lubrication overflow oil circuit (108) is by paper washer (117)、Dividing plate (118) seals or passes a bridge and connects with base plate (119),Decompression oil return opening (109) is set on base plate and the faying face of change speed gear box、Lubrication overflow outlet (110)、Reverse gear oil-out (111)、First lubrication oil-out (112)、Second lubrication oil-out (113)、Advance two grades of oil-outs (114)、Advance one grade of oil-out (115)、3rd lubrication oil-out (116)、Brake main oil leak hole (84)、Braking Residual oil hole (85)、First oil return opening (41)、Second oil return opening (40)、3rd oil return opening (39)、4th oil return opening (38).
nullLoader power shift level 2 buffering the most according to claim 1 and 2 handles valve,It is characterized in that described decompression secondary buffer device includes the first hole ring washer (14) being located in valve body (1)、Stop collar (12)、Spacing jump ring (13),Decompression secondary buffer device is separated into the mechanism of decompressor and balance accumulating mechanism by it,In the mechanism of decompressor, dress controls spring (15) successively、Control valve (16),Decompression oil return opening (10) is set on the valve opening of control valve side,Control valve center sets main oil-hole (9),Control valve is spacing fixing by the second hole ring washer (17),Control valve peripheral hardware decompression oil-in (8),Sealed fixing by the 3rd O (19) and relief chamber plug screw (18),Pressure reduction structure to the first hole ring washer outside balance accumulation of energy chamber (20) built-in interior to piston (21),Cushioning balance oil return opening (49) is set on interior valve opening below piston,Interior to the built-in big buffering energy-storaging spring (22) of piston、Middle buffering energy-storaging spring (23)、Limited block (24)、Pressure-reducing cushioning little spring (25),Small baffle paper washer (7) is filled on valve body、Small baffle (6)、Protecgulum (5),The built-in export-oriented piston (26) of protecgulum,It is sleeved on outside big buffering energy-storaging spring,Export-oriented piston sets damping hole (27),Working oil path outlet (11) is through stop collar connection main oil-hole (9) and unidirectional valve pocket (28),Check valve intracavity dress one-way valve spring (29)、Check valve (30),Check valve holds out against the unidirectional valve opening (32) on small baffle (7),Throttle orifice (31) is set by one-way valve port,Unidirectional valve opening connects unidirectional valve pocket and accumulation of energy pressure regulating cavity (33) with throttle orifice.
Loader power shift level 2 buffering the most according to claim 1 and 2 handles valve, it is characterized in that described built-in braking device includes the oil-in (2) being located on valve body (1), braking valve pocket (74) it is provided with in valve body, brake valve intracavity fills brake valve plug screw (90) successively, pressure regulation pad (89), spring base (87), first O (88), tripping spring (86), braking guiding valve (75), braking cup (78), second O (79), brake interface plug screw (80), brake interface (81), bleed screw gasket seal (83), bleed screw (82), axial Residual oil hole (76) is set in braking guiding valve, radially Residual oil hole (77), brake valve intracavity is equipped with dynamic main oil leak hole (84), braking Residual oil hole (85).
nullLoader power shift level 2 buffering the most according to claim 1 and 2 handles valve,It is characterized in that described fixed shaft type brake unit includes the oil-in (2) being located on valve body (1),Braking valve pocket (74) in valve body (1),Brake valve intracavity sets shaft type braking guiding valve (91),Axial Residual oil hole (76) is set in braking guiding valve、Radially Residual oil hole (77),A shelves spacing (99) are set on braking guiding valve、B shelves spacing (98),Brake valve intracavity sets spacing hole (104),The built-in limit spring of spacing hole (103)、Spacing steel ball (102),Brake valve intracavity sets main oil leak hole (54)、Pull handle Residual oil hole (92)、Braking Residual oil hole (105),Braking valve pocket tail end dress braking screw plug sealing ring (100)、Braking screw plug (101),Brake valve pull handle (93) installs little spacing shim (96)、Little outside framework oil seal (95)、3rd hole is with ring washer (94).
nullLoader power shift level 2 buffering the most according to claim 1 and 2 handles valve,It is characterized in that described positive direction gearshift includes the manipulation valve pocket (51) being located in valve body (1),Set positive direction in valve pocket and handle valve rod (52),Positive direction sets axial oil circuit (54) in handling valve rod、First cross oilhole (53)、Second cross oilhole (55),Reverse gear location (56) is set on valve rod、Neutral gear location (57)、Previous shelves location (58)、(59) four arc grooves in the first two shelves location,Some drain pans (60) are set on the valve rod of reverse gear and the first two grade of outside,Locking ball (61) is filled successively above arc groove、Location spring (62)、Gasket seal (63)、Location screw (64),The equidirectional positive direction that sets of protecgulum (5) horizontal position handles valve rod pull handle (67),Spacing shim the most in tandem (74) on pull handle、Outside framework oil seal (71)、4th hole is with ring washer (69)、Embedded guard shield (68),Positive direction handle valve rod pull handle to the built-in vexed plug of valve opening (65),It is embedded in vexed plug sealing ring (66),It is fixed in valve opening by the 5th hole ring washer,The 4th oil return opening (38) is set in handling valve pocket、3rd oil return opening (39)、Second oil return opening (40)、First oil return opening (41),Through paper washer (117)、Dividing plate (118) connects with base plate (119),Reverse gear outlet (48) is through reverse gear oil circuit (35) connection reverse gear oil-out (111),Advance one grade of oil-out (46) through one grade of oil circuit (36) connection one grade of oil-out (115) of advance of advancing,Advance two grades of oil-outs (47) through two grades of oil circuit (37) connection two grades of oil-outs (114) of advance of advancing,Working oil path import (43) is through paper washer、Dividing plate is passed a bridge by connecing working oil outlet (11) in working oil path on base plate (107).
nullLoader power shift level 2 buffering the most according to claim 1 and 2 handles valve,It is characterized in that described opposite direction gearshift includes the manipulation valve pocket (51) being located in valve body (1),Set opposite direction in valve pocket and handle valve rod (71),The first cross oilhole (53) is set in valve rod、Axially oil circuit (54)、Second cross oilhole (55),Reverse gear location (56) is set on opposite direction valve rod、Neutral gear location (57)、Previous shelves location (58)、The first two shelves location (59),Several drain pans (60) are set in reverse gear and the first two grade of outside valve rod,Locking ball (61) is filled successively above arc detent、Location spring (62)、Gasket seal (63)、Location screw (64),The outside of reverse gear sets opposite direction and handles valve rod pull handle (67),Spacing shim the most in tandem (74) on pull handle,Outside framework oil seal (72),Fix with the 5th hole ring washer (70),Handle valve rod pull handle suit dust cover (73),Big end is buckled on the groove of valve body extending area,Opposite direction handle valve rod pull handle to the built-in vexed plug of valve opening (65),Vexed plug sealing ring (66) it is embedded in vexed plug seal groove,It is fixed in valve opening by the 4th hole ring washer (69),The 4th oil return opening (38) is set in handling valve pocket、3rd oil return opening (39)、Second oil return opening (40)、First oil return opening (41),Through paper washer (117)、Dividing plate (118) connects with base plate (119),Reverse gear outlet (48) is through reverse gear oil circuit (35) connection reverse gear oil-out (111),Advance one grade of outlet (46) through one grade of oil circuit (36) connection one grade of oil-out (115) of advance of advancing,Advance two grades of outlets (47) through two grades of oil circuit (37) connection two grades of oil-outs (114) of advance of advancing,Working oil path import (43) is through paper washer、Dividing plate is passed a bridge by connecing working oil outlet (11) in working oil path on base plate (107)、Band caudal peduncle with caudal peduncle opposite direction gearshift handles valve rod (120).
CN201610491262.1A 2016-06-29 2016-06-29 Loading machine power shift level 2 buffering manipulates valve Active CN106122143B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201025299Y (en) * 2007-02-08 2008-02-20 浙江临海海宏集团有限公司 Shift operation and control valve with buffering device
EP1980767A2 (en) * 2007-04-12 2008-10-15 ZF Friedrichshafen AG Hydraulic control device for power shift transmissions with a device for reducing shift times
CN202017762U (en) * 2011-05-12 2011-10-26 杭州萧山叉车配件有限公司 Novel electrohydraulic control operating valve
CN202468507U (en) * 2012-02-03 2012-10-03 杭州萧山叉车配件有限公司 Novel speed change operating valve of loading machine
CN202545790U (en) * 2012-03-27 2012-11-21 杭州萧山叉车配件有限公司 Mechanical power cut-off speed-change pilot valve
CN204458607U (en) * 2015-01-26 2015-07-08 杭州萧山叉车配件有限公司 Multipurpose accumulating type trimmer valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201025299Y (en) * 2007-02-08 2008-02-20 浙江临海海宏集团有限公司 Shift operation and control valve with buffering device
EP1980767A2 (en) * 2007-04-12 2008-10-15 ZF Friedrichshafen AG Hydraulic control device for power shift transmissions with a device for reducing shift times
CN202017762U (en) * 2011-05-12 2011-10-26 杭州萧山叉车配件有限公司 Novel electrohydraulic control operating valve
CN202468507U (en) * 2012-02-03 2012-10-03 杭州萧山叉车配件有限公司 Novel speed change operating valve of loading machine
CN202545790U (en) * 2012-03-27 2012-11-21 杭州萧山叉车配件有限公司 Mechanical power cut-off speed-change pilot valve
CN204458607U (en) * 2015-01-26 2015-07-08 杭州萧山叉车配件有限公司 Multipurpose accumulating type trimmer valve

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