CN106122143B - Loading machine power shift level 2 buffering manipulates valve - Google Patents

Loading machine power shift level 2 buffering manipulates valve Download PDF

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Publication number
CN106122143B
CN106122143B CN201610491262.1A CN201610491262A CN106122143B CN 106122143 B CN106122143 B CN 106122143B CN 201610491262 A CN201610491262 A CN 201610491262A CN 106122143 B CN106122143 B CN 106122143B
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China
Prior art keywords
oil
valve
hole
return opening
reverse gear
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CN201610491262.1A
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CN106122143A (en
Inventor
吴戈
吴椒
俞仁利
陈庆忠
卢瑛
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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 one kind to manipulate valve, and valve is manipulated more particularly, to a kind of loading machine power shift level 2 buffering.It mainly solves during speed change operating valve high speed gear shift present in prior art that decompression absorption effect is poor, it is impossible to meet loading machine technological transformation and the update of loading machine and other handling, transport, agricultural machinery supporting demand etc. technical problem.The present invention includes valve body (1), oil inlet (2) is set on described valve body (1), lubricate oil inlet (3), main pressure tap (4), set in valve body and depressurize secondary buffer device, built-in braking device or fixed shaft type brake apparatus, positive direction gearshift or opposite direction gearshift, by working connection between each device(106), working oil path(107), lubricant passage way(34), lubrication overflow oil circuit (108) connection.

Description

Loading machine power shift level 2 buffering manipulates valve
Technical field
The present invention relates to one kind to manipulate valve, and valve is manipulated more particularly, to a kind of loading machine power shift level 2 buffering.
Background technology
Generally supporting BS428 types system gearbox, this type system gearbox mostly use dead axle to current China ZL20/30 loading machines Formula machine liquid shift control valve.Chinese patent discloses a kind of improvement of speed change operating valve(Authorization Notice No.:CN20246850U). Though this type system speed change operating valve, by repeatedly improvement, decompression absorption effect is poor during high speed gear shift, it is impossible to meets loading machine technology Transformation and the update of loading machine and other handling, transport, the supporting demand of agricultural machinery.
The content of the invention
The present invention is to provide a kind of loading machine power shift level 2 buffering and manipulates valve, and it mainly solves prior art and deposited Speed change operating valve high speed gear shift when decompression absorption effect it is poor, it is impossible to meet that the renewal of loading machine technological transformation and loading machine is changed Generation and other handling, transport, agricultural machinery supporting demand etc. technical problem.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals:
The loading machine power shift level 2 buffering of the present invention manipulates valve, including valve body, sets oil inlet on described valve body, moistens Slide into hydraulic fluid port, main pressure tap, decompression secondary buffer device, built-in braking device or fixed shaft type brake apparatus, just are set in valve body Direction gearshift or opposite direction gearshift, by working connection, working oil path, lubricant passage way, lubrication oil overflow between each device Road connects.The present invention meets power shift during gearbox high speed.2)Designed for the size for connection of present BS428 gearboxes, directly Connecing can undergo technological transformation to old type tube gearbox, and versatility is good.The manipulation guiding valve of gearshift has positive and negative two directions to connect Design is connect, to meet the intrinsic needs of BS428 types system gearbox, manipulates guiding valve pull handle with depressurizing the protecgulum of secondary buffer device It is unidirectional to be designed for positive direction, manipulate guiding valve pull handle decompression secondary buffer device to designed for opposite direction.
Preferably, described working connection, working oil path, lubricant passage way, lubrication oil overflow route paper washer, bulkhead seal or Gap bridge connect with bottom plate, is set on the faying face of bottom plate and gearbox and depressurizes oil return opening, lubricates overflow outlet, reverse gear oil-out, the One 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 lubrication oil-out, braking Main oil leak hole, braking Residual oil hole, the first oil return opening, the second oil return opening, the 3rd oil return opening, the 4th oil return opening.
Preferably, described decompression secondary buffer device include 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, control is filled successively in the mechanism of decompressor by it Spring processed, control valve, decompression oil return opening are set on the valve opening of control valve side, control valve center sets main oil-hole, and control valve is by second The spacing fixation of hole ring washer, control valve peripheral hardware decompression oil inlet, is fixed by the 3rd O-ring and the sealing of relief chamber plug screw, decompression knot Structure to the first hole ring washer on the outside of balance energy storage chamber it is built-in interior to piston, it is flat that buffering is set on the interior valve opening to below piston Weigh oil return opening, interior to the built-in big buffering energy-storaging spring of piston, middle buffering energy-storaging spring, limited block, pressure-reducing cushioning little spring, valve body Upper dress small baffle paper washer, small baffle, protecgulum, the built-in export-oriented piston of protecgulum, it is sleeved on outside big buffering energy-storaging spring, in export-oriented piston If damping hole, working oil path outlet connects main oil-hole and unidirectional valve pocket through stop collar, check valve intracavitary dress one-way valve spring, unidirectional Valve, check valve hold out against the unidirectional valve opening on small baffle, throttle orifice are set by one-way valve port, and unidirectional valve opening connects unidirectionally with throttle orifice Valve pocket and accumulation of energy pressure regulating cavity.The connection of secondary buffer device oil circuit is depressurized, dividing plate is passed through by the main oil-out of brake apparatus, through bottom plate Working connection pass a bridge from decompression oil inlet enter be located in valve body depressurize secondary buffer device relief chamber, then from level 2 buffering fill The work oil export put passes through dividing plate, and the working oil path through bottom plate, which is passed a bridge from working oil path import, enters gearshift.Decompression two The characteristics of principle of level buffering is:Mechanism of decompressor device principal pressure is set to 1.40MPa-1.6MPa(Principal pressure can be wanted by main frame Ask setting), when manipulating valve gear shift, principal pressure is quickly fallen to the about 0.3S times after below 0.5MPa-0.2MPa makes main pressure Power is climbed to 0.6MPa-0.7MPa, accounts for the period of pressure rising time 25% or so, and principal pressure is quickly initially set up;Main pressure Power from 0.6MPa-0.7MPa there is flex point after about 0.6S, account for period of total pressure rising time 50% or so, make principal pressure it is gentle on 0.95 MPa-1.05MPa is raised to, at this moment possesses the gentle combination to gear clutch of speed-changing box friction;Principal pressure is from 0.95 There is about 0.3S after a flex point again in MPa-1.05MPa, accounts for 25% or so the period of total pressure rising time, and principal pressure is again quick Set principal pressure 1.40MPa-1.6MPa is risen to, at this moment possesses non-slip to friction plate fast-holding, is become so as to reach The flexibility of smooth shifting, speed change box clutch during fast case high speed is run in.
Enter pressure oil from decompression oil inlet during decompression secondary buffer device work, form high pressure in oil suction chamber, promotion subtracts Pressure valve axle inwardly moves, and at this moment depressurizes oil return opening and opens, and partial pressure oil is by depressurizing back after oil suction chamber connects with decompression oil return opening Hydraulic fluid port enters torque-converters,(This part oil return also is used as lubrication oil or directly backs into fuel tank).Principal pressure is set by control spring Put down after being scheduled on 1.40MPa ~ 1.6MPa (principal pressure can be set by different main frame requirements) by the main oil-hole entrance at control valve center Weigh accumulating mechanism.The mechanism of decompressor, balance accumulating mechanism and gearshift of secondary buffer device are depressurized in working oil exit oil Road connect, when gearshift hang shelves or switching gear when, working oil path have by moment off-load empty and be switched into working oil Road(Control the oil cylinder of speed change box clutch)Under working oil path, the main oil pressure of working connection are synchronous rapidly during hydraulic oil is full Drop, makes the pressure oil emptying for being in accumulation of energy oil pocket after the check valve decompression connected with working oil path is opened, and accumulation of energy extroversion piston loses Installation site is pressed back into, at this moment the main oil pressure in working oil path drops to rapidly from 1.40MPa ~ 1.6MPa moments of setting Below 0.5MPa.Main oil pressure increases after completing to hang shelves or gear switch, promotes closed check valve check valve hydraulic fluid port, work Pressure oil on oil circuit can only enter accumulation of energy oil pocket by throttle orifice, and pushed at high pressure is formed between accumulation of energy oil pocket and export-oriented piston Export-oriented piston compression is big to buffer energy-storaging spring, middle buffering energy-storaging spring, limited block and pressure-reducing cushioning little spring, promotes interior to piston Turn down or close equalizing and buffering oil return opening;The damping hole of accumulation of energy extroversion piston centre(Buffer pressurized hole)Play in boost process Releveling acts on, and overcomes the overshoot peak value of main oil pressure boosting moment.Main pressure tap is set on valve body above working connection, for master The detection of buck-boost performance graph when machine transmits pressure signal and gear shift.
Preferably, described built-in braking device includes the oil inlet being located on valve body, braking is provided with valve body Valve pocket, brake valve intracavitary fill successively brake valve plug screw, pressure regulation pad, spring base, the first O-ring, tripping spring, braking guiding valve, Braking cup, the second O-ring, brake interface plug screw, brake interface, bleed screw gasket seal, bleed screw, brake in guiding valve If axial Residual oil hole, radial direction Residual oil hole, brake valve intracavitary is equipped with dynamic main oil leak hole, braking Residual oil hole.Loading machine operation need to meet an urgent need During braking, brake fluid is connected(Gas)Behind braking source, braking slide valve spindle inwardly moves cut-out working connection, and gearbox is stopped, and removes Tripping spring promotes braking guiding valve to reset behind braking source, and working connection connection, gearbox is resumed work, so as to ensure the peace of loading machine Full operation.The brake apparatus of base type is based on built-in brake apparatus.
Preferably, described fixed shaft type brake apparatus includes being located at oil inlet on valve body, the braking valve pocket in valve body, Brake valve intracavitary sets shaft type braking guiding valve, brakes and axial Residual oil hole, radial direction Residual oil hole are set in guiding valve, brakes and sets A shelves on guiding valve It is spacing, B shelves are spacing, brake valve intracavitary sets spacing hole, the built-in limit spring of spacing hole, spacing steel ball, and brake valve intracavitary sets master and let out Oilhole, 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 are worn Fill small spacing shim, small outside framework oil seal, the 3rd hole ring washer.This brake structure is available for different Selection of chiller, one:It is spacing Working connection is normally closed design during B shelves, even if at this moment starting main frame, gearbox will not work, it is necessary to will move A to outside braking guiding valve Shelves working connection can just be opened, and gearbox can just work, securely and reliably.It need to be stopped in emergency in operation, A shelves only need to be retracted to B shelves, Working connection is cut 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 gearbox stops work Make.Secondly:It is spacing directly to be opened in A shelves, working connection, work, needed in operation urgent as long as at this moment starting main frame gearbox Parking, it is same as above not repeat to illustrate.
Preferably, described positive direction gearshift includes the manipulation valve pocket being located in valve body, positive direction is set in valve pocket Valve rod is manipulated, positive direction manipulates in valve rod and sets axial oil circuit, the first cross oilhole, the second cross oilhole, and setting reverse gear on valve rod determines Set on the valve rod of position, neutral gear positioning, the positioning of previous shelves, the first two shelves four arc grooves of positioning, reverse gear and the first two grade of outside some Drain pan, arc groove top fill locking ball, retaining spring, gasket seal, positioning screw successively, and protecgulum horizontal position is equidirectional If positive direction manipulates valve rod pull handle, spacing shim in tandem, outside framework oil seal, the 4th hole ring washer, embedded shield successively on pull handle, Positive direction manipulate valve rod pull handle to the built-in vexed plug of valve opening, be embedded in vexed plug sealing ring, valve opening be fixed on ring washer by the 5th hole It is interior, manipulate in valve pocket and set the 4th oil return opening, the 3rd oil return opening, the second oil return opening, the first oil return opening, through paper washer, dividing plate and bottom plate Connection, reverse gear outlet is through reverse gear oil communication reverse gear oil-out, and the one grade of oil-out that advances is through one grade of oil communication advance one of advancing Shelves oil-out, the two grades of oil-outs that advance advance two grades of oil-outs through the two grades of oil communications of advancing, working oil path import through paper washer, every Plate is passed a bridge by connecing work oil export in working oil path on bottom plate.When manipulation valve rod is positioned at neutral gear, working oil path and each gear Oil circuit does not connect, and manipulates valve rod from neutral gear(Outer drawing)When switching to reverse gear, working oil path import passes through first group of cross oilhole axle To oilhole, second group of cross oilhole and reverse gear outlet, passed through reverse gear oil circuit from the reverse gear interface of valve body bottom surface to gearbox Transfusion pressure energy, when switching back into neutral gear from reverse gear, working oil path is cut off with reverse gear oil circuit, the first oil return opening oil return of reverse gear oil communication Off-load, the separation of gearbox reverse clutch, gearbox are stopped.Manipulate valve rod(Inside push away)One grade of advance is switched to from neutral gear When, working oil path is through manipulating stem ring grooving connection one grade of oil-out of advance, through advance of one grade of oil circuit from valve body bottom surface of advancing One grade of interface transmits liquid energy to gearbox.When manipulation valve rod(Inside push away)From advance one grade be switched to advance two grades when, working oil path One grade of oil circuit is cut off with advancing, and advance one grade of oil return opening oil return unloading of oil communication the 3rd, one grade of clutch of advance of gearbox While being rapidly separated, working oil path is advanced two grades by second group of cross oilhole, axial oilhole, first group of cross oilhole connection Oil-out, through the two grades of oil circuits that advance, hydraulic energy is transmitted from two grades of interfaces of advance of valve body bottom surface to gearbox.Conversely, again in the past When entering two grades and being switched to one grade of advance, working oil path is cut off with the two grades of oil circuits of advancing, and advance two grades of oil circuits and the 4th oil return opening time Oily off-load, working oil path connects work with advancing one grade while two grades of clutches of advance of gearbox are rapidly separated.Again in the past When entering one grade and being switched to neutral gear, advance one grade of oil circuit with through second group of cross oilhole, axial oilhole, first group of cross oilhole from the Three oil return opening oil return unloadings, one grade of clutch separation of advancing, gearbox are stopped.
Preferably, described opposite direction gearshift includes the manipulation valve pocket being located in valve body, opposite direction is set in valve pocket Valve rod is manipulated, the first cross oilhole, axial oil circuit, the second cross oilhole are set in valve rod, reverse gear positioning, sky are set on opposite direction valve rod Several drain pans are set on shelves positioning, the positioning of previous shelves, the positioning of the first two shelves, reverse gear and the first two grade of outside valve rod, arc positioning is recessed Locking ball, retaining spring, gasket seal, positioning screw are filled above groove successively, opposite direction is set outside reverse gear and manipulates valve rod drawing Handle, spacing shim in tandem successively on pull handle, outside framework oil seal, is fixed with the 5th hole with ring washer.Valve rod pull handle suit dust cover is manipulated, Big end is buckled on the groove of valve body extending area, opposite direction manipulate valve rod pull handle to the built-in vexed plug of valve opening, vexed plug seal groove The interior vexed plug sealing ring of setting-in, is fixed in valve opening with ring washer by the 4th hole, manipulates in valve pocket and set the 4th oil return opening, the 3rd oil return Mouth, the second oil return opening, the first oil return opening, are connected through paper washer, dividing plate with bottom plate, and reverse gear outlet is fuel-displaced through reverse gear oil communication reverse gear Mouthful, one grade of outlet of advancing is through the one grade of oil communication one grade of oil-out of advance that advances, and the two grades of oil-outs that advance are through the two grades of oil circuits that advance Connection advance two grades of oil-outs, working oil path import through paper washer, dividing plate pass a bridge by connect in working oil path on bottom plate work oil export, Band caudal peduncle with caudal peduncle opposite direction gearshift manipulates valve rod.Backward gear is switched to from neutral gear, or neutral gear is switched back into from backward gear. Switch to one grade of advance from neutral gear, advance two grades, or from advance two grades, the one grade of operation principle for switching back into neutral gear of advancing with it is square It is identical to gearshift, do not repeat to illustrate.When manipulation valve rod caudal peduncle with caudal peduncle opposite direction gearshift is used for reverse gear, valve is manipulated The caudal peduncle of bar bumps against the reverse range signal switch set in complete machine, and reverse range signal is transmitted to complete machine.Remaining function is same as described above.
Therefore, the present invention possesses the decompression secondary buffer device that can meet gearbox high speed motive force gear shift:Built-in braking The brake apparatus that device or fixed shaft type guiding valve manipulate(Two kinds of brake apparatus are available for different choice of main machine);Positive direction connects or negative side The gearshift connected to two kinds of directions of connection,(Positive and negative two kinds of directions connection is available for different choice of main machine), have an advantage that It is constant with the size for connection of former BS428 types system gearbox.It is characteristic of the invention that pressure-reducing cushioning performance is good, rational in infrastructure, system The dynamic, device of gear shift possesses double selection, and versatility is good, is adapted to similarly be adapted to original while new gear box development The technological transformation of BS428 types system gearbox.
Brief description of the drawings
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 valve body bottom surface oil circuit figure of the present utility model;
Accompanying drawing 4 is positive direction gearshift schematic diagram of the present utility model;
Accompanying drawing 5 is opposite direction gearshift schematic diagram of the present utility model;
Accompanying drawing 6 is built-in braking schematic device of the present utility model;
Accompanying drawing 7 is fixed shaft type brake apparatus schematic diagram of the present utility model;
Accompanying drawing 8 is the utility model bottom plate oil circuit hydraulic fluid port schematic diagram;
Accompanying drawing 9 is the utility model check valve, throttle orifice enlarged diagram;
Accompanying drawing 10 is side schematic view of the present utility model;
Accompanying drawing 11 is positive direction gearshift outline drawing of the present utility model;
Accompanying drawing 12 is opposite direction gearshift outline drawing of the utility model with caudal peduncle.
Parts, position and numbering in figure:Valve body 1, oil inlet 2, lubricating oil inlet 3, main pressure tap 4, protecgulum 5, septulum Plate 6, plintlet paper washer 7, oil inlet 8 is depressurized, main oil-hole 9, depressurizes oil return opening 10, work oil export 11, stop collar 12, limiting card Spring 13, the first hole ring washer 14, control spring 15, control valve 16, the second hole ring washer 17, relief chamber plug screw 18, the 3rd O-ring 19, energy storage chamber 20 is balanced, it is interior slow to piston 21, big buffering energy-storaging spring 22, middle buffering energy-storaging spring 23, limited block 24, decompression Rush 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, unidirectionally 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, the 4th oil return Mouth 38, the 3rd oil return opening 39, the second oil return opening 40, the first oil return opening 41, main oil-out 42, working oil path import 43, main draining Hole 44, Residual oil hole 45, previous shelves outlet 46, two grades of outlets 47 of advancing, reverse gear outlet 48, equalizing and buffering oil return opening 49, balance are slow Refunds oil circuit 50, manipulates valve pocket 51, and positive direction manipulates valve rod 52, the first cross oilhole 53, axial oil circuit 54, the second cross oilhole 55, reverse gear positioning 56, neutral gear positioning 57, previous shelves positioning 58, the first two shelves positioning 59, drain pan 60, locking ball 61, position bullet Spring 62, gasket seal 63, bolt 64, vexed plug 65, vexed plug sealing ring 66, positive direction manipulate valve rod pull handle 67, embedded shield Cover 68, the 4th hole ring washer 69, the 5th hole ring washer 70, opposite direction manipulate valve rod 71, outside framework oil seal 72, dust cover 73, system Dynamic valve pocket 74, brakes guiding valve 75, brake valve axial direction Residual oil hole 76, brake valve radial direction Residual oil hole 77, brake valve leather cup 78, the 2nd O Type circle 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, the first O-ring 88, pressure regulation pad 89, brake plug screw 90, fixed shaft type Brake guiding valve 91, pull handle Residual oil hole 92, brake valve pull handle 93, the 3rd hole ring washer 94, small outside framework oil seal 95, small spacing shim 96, dead axle braking valve pocket 97, spacing 98, the A shelves spacing 99 of B shelves, braking screw plug sealing ring 100, brake 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, lubricate overflow oil circuit 108, decompression oil return outlet 109, lubrication overflow outlet 110, reverse gear oil-out 111, the first lubricating outlet 112, second lubricates Hydraulic fluid port 113, advance two grades of oil-outs 114, and advance one grade of oil-out 115, the 3rd lubrication oil-out 116, dividing plate paper washer 117, every Plate 118, bottom plate 119, the opposite direction with caudal peduncle manipulate valve rod 120, spacing shim 121.
Embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
Embodiment 1:The loading machine power shift level 2 buffering of this example manipulates valve, as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 8, valve body Oil inlet 2 is set on 1, lubricates oil inlet 3, main pressure tap 4.Built-in braking device is set in valve body(Fixed shaft type brake apparatus is implemented Example 2 illustrates)Opposite direction gearshift(Positive direction gearshift embodiment 3 illustrates)Depressurize secondary buffer device, each device Between connected by working connection 106, working oil path 107, lubricant passage way 34, lubrication overflow oil circuit 108.Set on described bottom plate 119 Oil return outlet 109 is depressurized, lubrication overflow outlet 110, reverse gear oil-out 111, first lubricates oil-out 112, and the second lubrication is fuel-displaced Mouth 113, advance two grades of oil-outs 114, and advance one grade of oil-out 115, the 3rd lubrication oil-out 116, brakes main oil leak hole 84, system Dynamic Residual oil hole 85, the first oil return opening 41, the second oil return opening 40, the 3rd oil return opening 39, the 4th oil return opening 38, each work(with gearbox Can oil circuit docking.
As shown in Figure 1, Figure 2, Figure 6 shows, built-in braking device includes the oil inlet 2 being located on valve body 1, is equipped with valve body dynamic Valve pocket 74, brake valve intracavitary fill braking plug screw 90, pressure regulation pad 89, spring base 87 successively, and spring seat slot is embedded to fill the first O-ring 88, spring base tripping spring 86 in tandem, braking guiding valve 75, brake and axial Residual oil hole 76, radial direction Residual oil hole 77, braking are set in guiding valve Leather cup 78, the second O-ring 79, are inlaid in the plane groove of brake interface plug screw 80, mobile interface are equipped with brake interface plug screw 81, brake and bleed screw gasket seal 83, bleed screw 82 are set on guiding valve, brake the brake valve intracavitary below guiding valve and be equipped with dynamic master Oil leak hole 84, braking Residual oil hole 85.
Opposite direction gearshift as shown in Figure 1, Figure 2, Figure 5, including the manipulation valve pocket 51 being located in valve body 1, manipulate valve pocket Inside set opposite direction and manipulate valve rod 71, set in opposite direction valve rod the first cross oilhole 53, axial oil circuit 54, the second cross oilhole 55, Opposite direction manipulates and reverse gear positioning 56 is set on valve rod, neutral gear positions 57, previous shelves positioning 58, the first two grade positions 59, reverse gear and the first two Several drain pans 60 are set on the valve rod of shelves outside, fill locking ball 61, retaining spring 62, close above arc detent successively Gasket 63, positioning screw 64, opposite direction is set outside reverse gear direction manipulate valve rod pull handle 67, pull handle spacing shim in tandem successively 121, outside framework oil seal 72, it is fixed on and is manipulated in valve opening with the 5th hole ring washer 70.Opposite direction manipulates valve rod pull handle suit dust cover 73, big end is buckled on the groove of valve body extending area.Opposite direction manipulate valve rod pull handle to valve opening it is built-in it is vexed plug 66, it is vexed plug it is close The vexed plug sealing ring 66 of setting-in, is fixed in valve opening by the 4th hole ring washer 69 in sealing groove.Manipulate in valve pocket and set the 4th oil return opening 38, 3rd oil return opening 39, the second oil return opening 40, the first oil return opening 41, connected through paper washer 117, dividing plate 118 with bottom plate 119.As Fig. 3, Shown in Fig. 8, the reverse gear outlet 48 of opposite direction gearshift is through reverse gear oil circuit 35, through the reverse gear oil-out on paper washer dividing plate and bottom plate 111 connections, one grade of outlet 46 of advancing connect through the one grade of oil circuit 36 that advances through paper washer dividing plate and one grade of oil-out 115 of advance on bottom plate It is logical.Two grades of outlets 47 of advance connect through the two grades of oil circuits 37 that advance through paper washer, dividing plate with two grades of oil-outs 114 of advance on bottom plate. Working oil path import 43 is passed a bridge by connecing work oil export 11 in the working oil path 107 on bottom plate through paper washer, dividing plate.Such as Figure 12 institutes Show, the manipulation valve rod 120 with caudal peduncle.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 9, decompression secondary buffer device is stored by the mechanism of decompressor and balance being located in valve body 1 Can mechanism composition.By the first hole ring washer 14, stop collar 12, spacing jump ring 13 in described valve body 1, by decompression level 2 buffering dress Put and be separated into the mechanism of decompressor and balance accumulating mechanism.Dress controls spring 15, control valve 16, control valve side successively in the mechanism of decompressor Decompression oil return opening 10 is set on valve opening, control valve center sets main oil-hole 19, and control valve is by the 17 spacing fixation of ring washer of the second hole, control Valve peripheral hardware depressurizes oil inlet 8, and outside seals fixation by the 3rd O-ring and relief chamber plug screw 18.Pressure reduction structure to the first hole It is built-in interior to piston 21 with the balance energy storage chamber 20 on the outside of ring washer, set cushioning balance oil return opening on the interior valve opening to below piston 49, it is 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, small baffle 6 are filled on valve body, outside dress protecgulum 5, the built-in export-oriented piston 26 of protecgulum, export-oriented piston bush is mounted in big slow Rush outside energy-storaging spring, the centre of export-oriented piston sets damping hole 27, and working oil path outlet 11 is through stop collar connection main oil-hole and unidirectionally Valve pocket 28, check valve intracavitary dress one-way valve spring 29, check valve 30, check valve hold out against the list on small baffle 6 as shown in Fig. 9 amplifications To valve opening 32, throttle orifice 31 is set by unidirectional valve opening, unidirectional valve opening connects unidirectional valve pocket and accumulation of energy pressure regulating cavity 33 with throttle orifice.
Embodiment 2:The loading machine power shift level 2 buffering of this example manipulates valve, as shown in Figure 1, Figure 7 shows, including is located at valve body Oil inlet 2 on 1, setting shaft braking valve pocket 97 in valve body, dead axle brake valve intracavitary set shaft type braking guiding valve 91, brake guiding valve Axial Residual oil hole 76, radially residual hole 77 are inside set, brakes and sets that A shelves are spacing 99, B shelves spacing 98 on guiding valve, it is corresponding below limited impression Valve opening set spacing hole 104, the built-in limit spring 103 of spacing hole, spacing steel ball 102, braking valve pocket set main oil leak hole 54, pull handle Residual oil hole 92, braking Residual oil hole 105, braking valve pocket tail end seal fixation by braking screw plug sealing ring 100, braking screw plug 101, made Dynamic valve pull handle 93 installs small spacing shim 96, small outside framework oil seal 95, is fixed by the 3rd hole ring washer 94.
Remaining is identical with implementation column 1.
Embodiment 3:The loading machine power shift level 2 buffering of this example manipulates valve, as shown in Figure 1, Figure 2, shown in Fig. 4, Figure 11, just Direction gearshift includes the manipulation valve pocket 51 being located in valve body 1, manipulates and positive direction manipulation valve rod 52, positive direction behaviour are set in valve pocket Set axial oil circuit 54, the first cross oilhole 53 in vertical valve rod, the second cross oilhole 55, it is fixed that reverse gear positioning 56, neutral gear are set on valve rod Position 57, previous shelves positioning 58, the first two shelves position 59 4 arc grooves.Several are set on the valve rod of reverse gear and the first two grade of outside to let out Oil groove 60, arc detent top fill locking ball 61, retaining spring 62, gasket seal 63, positioning screw 64, protecgulum successively 5, horizontal position is equidirectional to be set positive direction and manipulates valve rod pull handle 67, spacing shim 121 in tandem, outside framework oil seal 72, the successively on pull handle Four holes ring washer 69, embedded shield 68, positive direction manipulate valve rod pull handle to valve opening it is built-in it is vexed plug 65, be embedded in it is vexed plug sealing Circle 66, seals fixation by the 5th hole ring washer 70 outside.Manipulate and the 4th oil return opening 38 is set in valve pocket, the 3rd oil return opening 39, second time Hydraulic fluid port 40, the first oil return opening 41, connected through paper washer 117, dividing plate 118 with bottom plate 119.As shown in Fig. 3, Fig. 8, positive direction gear shift dress The reverse gear outlet 48 put connects through reverse gear oil circuit 35 through paper washer, dividing plate with the reverse gear oil-out 111 on bottom plate.Advance one grade Mouth 46 connects through the one grade of oil circuit 36 that advances through paper washer dividing plate with one grade of oil-out 115 of advance on bottom plate, two grades of outlets 47 of advancing Through advancing, two grades of oil circuits 37 connect through paper washer, dividing plate with two grades of oil-outs 114 of advance on bottom plate.Working oil path import 43 is through paper Pad, dividing plate are passed a bridge by connecing work oil export 11 in the working oil path 107 on bottom plate.
Remaining is same as Example 1.
The specific embodiment of the present invention is the foregoing is only, but the architectural feature of the present invention is not limited thereto, Ren Heben The technical staff in field in the field of the invention, all cover among the scope of the claims of the present invention by the change or modification made.

Claims (5)

1. a kind of loading machine power shift level 2 buffering manipulates valve, including valve body (1), it is characterised in that on described valve body (1) If oil inlet (2), oil inlet (3) is lubricated, main pressure tap (4), decompression secondary buffer device, fixed shaft type braking dress are set in valve body Put, positive direction gearshift or opposite direction gearshift, by working connection between each device(106), working oil path(107), lubrication Oil circuit(34), lubrication overflow oil circuit (108) connection;Described fixed shaft type brake apparatus includes being located at valve body(1)On oil inlet (2), valve body(1)Interior braking valve pocket(74), brake valve intracavitary set shaft type braking guiding valve(91), brake guiding valve in set axially it is residual Oilhole(76), radial direction Residual oil hole(77), brake on guiding valve that to set A shelves spacing(99), B shelves it is spacing(98), brake valve intracavitary limits position Hole(104), the built-in limit spring of spacing hole(103), spacing steel ball(102), brake valve intracavitary sets main oil leak hole(54), pull handle it is residual Oilhole(92), braking Residual oil hole(105), braking valve pocket tail end dress braking screw plug sealing ring(100), braking screw plug (101), braking Valve pull handle(93)Install small spacing shim (96), small outside framework oil seal (95), the 3rd hole ring washer (94).
2. loading machine power shift level 2 buffering according to claim 1 manipulates valve, it is characterised in that described working connection (106), working oil path(107), lubricant passage way(34), lubrication overflow oil circuit (108) by paper washer (117), dividing plate (118) sealing or Gap bridge is connected with bottom plate (119), and decompression oil return opening is set on the faying face of bottom plate and gearbox(109), 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), the 3rd lubrication oil-out(116), the main oil leak hole of braking(84), braking Residual oil hole (85), the first oil return opening(41), the second oil return opening(40), the 3rd oil return opening(39), the 4th oil return opening(38).
3. loading machine power shift level 2 buffering according to claim 1 or 2 manipulates valve, it is characterised in that described decompression Secondary buffer device, which includes, is located at valve body(1)The first interior hole ring washer(14), stop collar(12), spacing jump ring(13), its Decompression secondary buffer device is separated into the mechanism of decompressor and balance accumulating mechanism, control spring is filled successively in the mechanism of decompressor(15)、 Control valve(16), decompression oil return opening is set on the valve opening of control valve side(10), control valve center sets main oil-hole(9), control valve by Second hole ring washer(17)Spacing fixation, control valve peripheral hardware decompression oil inlet (8), by the 3rd O-ring (19) and relief chamber plug screw (18) sealing fix, pressure reduction structure to the first hole ring washer on the outside of balance energy storage chamber(20)It is built-in interior to piston(21), Cushioning balance oil return opening is set on the interior valve opening to below piston(49), it is interior to the built-in big buffering energy-storaging spring of piston(22), in delay Rush energy-storaging spring(23), limited block(24), pressure-reducing cushioning little spring(25), small baffle paper washer is filled on valve body(7), small baffle(6)、 Protecgulum(5), the built-in export-oriented piston of protecgulum(26), it is sleeved on outside big buffering energy-storaging spring, damping hole is set in export-oriented piston(27), work Make oil circuit outlet(11)Main oil-hole is connected through stop collar(9)With unidirectional valve pocket(28), check valve intracavitary dress one-way valve spring(29)、 Check valve(30), check valve holds out against small baffle(6)On unidirectional valve opening(32), throttle orifice is set by unidirectional valve opening(31), check valve Hole connects unidirectional valve pocket and accumulation of energy pressure regulating cavity with throttle orifice(33).
4. loading machine power shift level 2 buffering according to claim 1 or 2 manipulates valve, it is characterised in that described pros Include being located at manipulation valve pocket (51) in valve body (1) to gearshift, positive direction is set in valve pocket and manipulates valve rod (52), positive direction behaviour Axial oil circuit (54), the first cross oilhole (53), the second cross oilhole (55) are set in vertical valve rod, reverse gear positioning is set on valve rod (56), neutral gear positions(57), the positioning of previous shelves(58), the first two shelves positioning(59)Four arc grooves, reverse gear and the first two grade of outside Valve rod on set some drain pans(60), arc groove top fills locking ball successively(61), retaining spring (62), gasket seal (63), positioning screw (64), protecgulum (5) horizontal position is equidirectional to be set positive direction and manipulates valve rod pull handle (67), in tandem successively on pull handle Spacing shim (121), outside framework oil seal(72), the 4th hole ring washer(69), embedded shield(68), positive direction manipulation 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 on by the 5th hole with ring washer in valve opening, manipulates valve pocket Inside 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), through paper washer(117)、 Dividing plate(118)Connected with bottom plate (119), reverse gear outlet(48)Through reverse gear oil circuit(35)Connect reverse gear oil-out(111), advance one Shelves oil-out(46)Through the one grade of oil circuit that advances(36)Connection one grade of oil-out of advance(115), two grades of outlets of advancing(47)Through advancing Two grades of oil circuits(37)Connection two grades of oil-outs of advance(114), working oil path import(43)Passed a bridge through paper washer, dividing plate by work on bottom plate Make oil circuit(107)On connect work oil export(11).
5. loading machine power shift level 2 buffering according to claim 1 or 2 manipulates valve, it is characterised in that described negative side Include being located at valve body to gearshift(1)Interior manipulation valve pocket(51), opposite direction is set in valve pocket and manipulates valve rod(71), set in valve rod First cross oilhole (53), axial oil circuit(54), the second cross oilhole(55), reverse gear positioning is set on opposite direction valve rod(56), it is empty Shelves positioning(57), the positioning of previous shelves(58), the first two shelves positioning(59), reverse gear and the first two grade outside valve rod on set several drain pans (60), arc detent top fills locking ball (61), retaining spring successively(62), gasket seal(63), positioning screw (64), opposite direction is set outside reverse gear and manipulates valve rod pull handle(67), spacing shim in tandem successively on pull handle(121), outside framework oil seal (72), with the 5th hole ring washer(70)It is fixed, manipulate valve rod pull handle suit dust cover(73), big end is buckled in valve body extending area On groove, opposite direction manipulate valve rod pull handle to the built-in vexed plug of valve opening(65), the vexed interior vexed plug sealing ring of setting-in of plug seal groove (66), by the 4th hole ring washer(69)It is fixed in valve opening, manipulates in valve pocket and 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), through paper washer (117), dividing plate(118)With bottom plate(119)Connection, reverse gear Outlet(48)Through reverse gear oil circuit(35)Connect reverse gear oil-out(111), one grade of outlet of advancing(46)Through the one grade of oil circuit that advances(36) Connection one grade of oil-out of advance(115), two grades of outlets of advancing(47)Through the two grades of oil circuits that advance(37)Connection two grades of oil-outs of advance (114), working oil path import(43)Passed a bridge through paper washer, dividing plate by working oil path on bottom plate(107)On connect work oil export(11)、 Band caudal peduncle with caudal peduncle opposite direction gearshift manipulates 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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