CN110094380A - A kind of tractor suppresses bury regulating valve and control method - Google Patents
A kind of tractor suppresses bury regulating valve and control method Download PDFInfo
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- CN110094380A CN110094380A CN201910394636.1A CN201910394636A CN110094380A CN 110094380 A CN110094380 A CN 110094380A CN 201910394636 A CN201910394636 A CN 201910394636A CN 110094380 A CN110094380 A CN 110094380A
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- valve
- control valve
- slow drop
- oil
- drop control
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 230000001276 controlling effect Effects 0.000 claims abstract description 5
- 239000000446 fuel Substances 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims 24
- 230000003111 delayed effect Effects 0.000 claims 1
- 239000010729 system oil Substances 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
A kind of tractor suppresses bury regulating valve and control method, comprising: application valve body, slow drop control valve assembly, overflow valve, pressure measuring tie-in, screw plug；Pass through the optimization designs such as application valve body, slow drop control valve assembly, the overflow valve on cylinder rod chamber oil circuit, pressure measuring tie-in, screw plug and several bonded washers, the control of the step-less adjustment, oil cylinder pressing force size of falling speed when oil liquid falls without throttling, equipment when equipment rises may be implemented, the falling speed for efficiently controlling equipment, impact when preventing equipment from falling.Suitable descending speed is selected according to handling situations simultaneously, improves working efficiency.Equipment functions such as control of the quiet sedimentation of equipment when the control and long-distance transportation of leakage rate at multi-way valve neutral position may be implemented, while reducing the screwing force of adjusting handle, handling comfort is improved.The Control system architecture is compact, easy for installation, and control method is simple, easily operated, securely and reliably.
Description
Technical field
The invention belongs to tractor field, it is related to a kind of tractor and suppresses bury regulating valve and control method.
Background technique
Currently, tractor market becomes more and more active with the fast lifting of tractor technology.It is mating to suppress pattern promotion of burying
Shared share increases the tractor of device on the market.Pressing force, leakage when suppressing the falling speed buried, suppressing
Amount, hydraulic locking function etc. have become the primary quality measure and reliability index of Tractor Products.Especially user to suppress into
Safety, reliability and the comfort of soil type formula tractor require also be continuously improved, and suppress the control for the lifting device that buries
Effect also seems especially prominent, this is because:
1) tractor suppresses the lifting device that buries using two-way cylinder, is different from common mechanical lifter using list
Action oil cylinder, for equipment when falling, the rod chamber of one-way cylinder does not apply pressing force to equipment, fully relies on equipment
Own wt decline, the speed of whereabouts by equipment itself weight.For high and medium power tractor, by tractor institute
The equipment weight of band is big, generally can increase throttle orifice on the oil return line of hydraulic system to control the falling speed of equipment；But
It suppresses in the lifting device that buries, due to using two-way cylinder, in equipment dropping process, cylinder rod chamber applies equipment
Add pressing force, while adding the own wt of equipment, the excessive velocities of whereabouts can make tractor and equipment in landing
At very big impact.So increasing fixed throttle port on the hydraulic oil-returning road of oil cylinder rodless cavity, to reduce under regular situation
The falling speed of equipment.
2) lifting and the pressure maintaining in transportational process for suppressing the multi-way valve control equipment for lifting device use of burying, due to more
Oil liquid leakage amount of the road valve in commutation process and neutral position is larger, especially neutral position when oil liquid vent flow it is excessive,
It causes during long-distance transportation, driver causes danger without knowing it, since equipment constantly falls.
In the prior art, for the falling speed that its tractor suppresses the lifting device that buries is adjusted, to realize its function
Can, it is general to be throttled using fixed throttle port is increased in the rodless cavity oil circuit of two-way cylinder to local oil duct, though it can rise
To the single speed control to falling speed, but falling speed is unadjustable.
For its tractor suppresses the pressing force control for the lifting device that buries, oversize piston shank diameter is generally used
Method, though can realize the control of single pressing force by reducing the effective active area of cylinder rod chamber, push and make
It is firmly unadjustable, it can not achieve the pressing force of the required oil cylinder under different soils, different equipment operation, and due to
Oil cylinder piston shank diameter is excessive, causes oil cylinder heavy, higher cost.
For its manipulation tractor suppresses the multi-way valve for the lifting device that buries, although multi-way valve neutral position and commutation position
Leakage rate when setting meets the specified value in JB/T8729.1 standard, but is not able to satisfy 30 minutes of tractor requirement quiet
Pertinent regulations in Settlement criterion GB/T 15370.
For its manipulation tractor suppresses the multi-way valve for the lifting device that buries, in tractor long-distance transportation, due to
Jolting for road surface causes moving up and down for equipment, and the impact for causing the oil liquid in oil cylinder to be subject to is excessive, simultaneously because multi-way valve exists
The leakage rate of slide valve is big when neutral position, and it is anxious during transportation to will lead to equipment by multi-way valve draining for the oil liquid in oil cylinder
Play is fallen, and tractor is caused to cause danger under steam.
To overcome above-mentioned deficiency, the purpose of the present invention is to provide a kind of tractors to suppress bury regulating valve and controlling party
Method passes through application valve body, slow drop control valve assembly, the overflow valve on cylinder rod chamber oil circuit, pressure measuring tie-in, screw plug and several
The optimization designs such as bonded washer, falling speed is stepless when oil liquid falls without throttling, equipment when equipment rising not only may be implemented
It adjusts, the control of oil cylinder pressing force size, and the control of equipment leakage rate at multi-way valve neutral position may be implemented
With the functions such as the control of the quiet sedimentation of equipment when long-distance transportation, while the screwing force of adjusting handle is reduced, handling comfort obtains
To improvement.The control system is novel, compact-sized, is easy to fabrication and installation, has good use value, is adapted to current
New demand is developed in domestic market.
Summary of the invention
Above-mentioned purpose is implemented with the following technical solutions in this patent: a kind of tractor suppresses regulating valve of burying, comprising: control
Valve body, slow drop control valve assembly, overflow valve, the first pressure measuring tie-in, the first screw plug, bonded washer, hole retaining ring, second survey crimping
Head, the second screw plug；The slow drop control valve assembly is mounted in the corresponding slow drop control valve assembly mounting hole F of application valve body, so
Hole is stuck in the K slot of application valve body with retaining ring afterwards；By overflow valve, the first pressure measuring tie-in, the first screw plug, bonded washer, second
Pressure measuring tie-in, the second screw plug are separately mounted in the corresponding hole of application valve body.
The application valve body, comprising: slow drop control valve assembly F mounting hole；Overflow valve E mounting hole；First pressure measuring tie-in MB
Mounting hole, the second pressure measuring tie-in MAMounting hole, the first screw plug H mounting hole, the second screw plug G mounting hole, control valve PAFuel feed hole and control
Valve P processedBOil outlet, A1 oilhole, A2 oilhole, B1 oilhole, B2 oilhole, the K mounting hole of hole retaining ring；Slow drop control valve assembly F peace
Dress Kong Yuhuan drop control valve assembly is spirally connected；Overflow valve E mounting hole is spirally connected with overflow valve；First pressure measuring tie-in MBMounting hole and first
Pressure measuring tie-in is spirally connected；Second pressure measuring tie-in MAMounting hole is spirally connected with the second pressure measuring tie-in；First screw plug H mounting hole and the first screw plug
It is spirally connected；Second screw plug G mounting hole is spirally connected with the second screw plug；Control valve PAFuel feed hole and control valve PBOil outlet passes through oil pipe respectively
It is connected to multi-way valve；A1 oilhole, A2 oilhole, B1 oilhole, B2 oilhole pass through oil pipe respectively and are connected to the upper and lower cavity of oil cylinder.
The slow drop control valve assembly, including slow drop adjusting handle, pin shaft, baffle, retaining ring, O-ring seal, slow falling tone section
Valve rod, return spring, limit pin shaft, regulating valve；Successively the postpone end face Y of drop control valve bar of O-ring seal, retaining ring is sleeved on
In Q slot on slow drop control valve bar, return spring is packed into the hole N on slow drop control valve bar, is then again inserted into regulating valve
In the hole N on slow drop control valve bar, slow drop control valve bar is connected with regulating valve with limit pin shaft；Baffle is postponed drop control valve
The end face Y of bar is inserted in, then by the hole X on the slow drop adjusting handle of the end face Y of slow drop control valve bar insertion, with pin shaft by slow drop
The gentle drop control valve bar connection of adjusting handle.
A kind of control method that tractor suppresses regulating valve of burying is as follows:
It [1], will when the oil liquid in control system enters multi-way valve by controlling A1 oilhole, the A2 oilhole of valve block by oil cylinder rodless cavity
The slow drop control valve handwheel of slow drop control valve assembly is screwed into extreme lower position, can block oil cylinder rodless cavity oil return and multi-way valve oil circuit
Channel, the oil circuit of the control system is in close state at this time；Slow drop control valve handwheel is back-outed to extreme higher position, i.e., slow drop
The face W on regulating valve stem is bonded with baffle 2.3, the oil return of oil cylinder rodless cavity by the A1 oilhole of the control valve block, A2 oilhole into
It does not throttle when entering multi-way valve, the falling speed of equipment reaches maximum；Slow drop control valve handwheel is screwed to highest from extreme lower position
During position, equipment falling speed is increasing；
[2] when oil liquid enters oil cylinder rodless cavity by controlling A1 oilhole, the A2 oilhole of valve block by multi-way valve in control system, delay drop
The regulating valve and return spring of regulating valve assembly are boosted by the coming oil of multi-way valve, until the end face R and tune on slow drop control valve bar
Save valve on the end face Z fitting, in this state, oil duct is opened completely, by oil liquid be not throttled；
[3] the slow drop adjusting handle of slow drop control valve assembly can all be screwed into, can hinder in long-distance transportation or transition by user
Oil liquid leakage in disconnected oil cylinder rodless cavity；
[4] when multi-way valve is in down position, the oil liquid in control system is oily by B1 oilhole, the B2 of application valve body from multi-way valve
Hole enters cylinder rod chamber, and user can be screwed into or back-out according to the type of soil and equipment, the screw rod of regulation relief valve, to control
The pressing force of cylinder rod chamber, when preventing oil cylinder pressing force excessive caused by impact, equipment buries distance when too small
Excessive influence operation quality；
[5] user can detect the pressure of two chamber of oil cylinder or more by the first pressure measuring tie-in and the second pressure measuring tie-in, exclude hydraulic
The failure of system.
Due to use the above-mentioned technical solution, the present invention can reach it is following the utility model has the advantages that
1, for the present invention due to being acted on using the step-less adjustment of slow drop control valve, user can be by rotating slow drop adjusting handle, and root
The falling speed that equipment is efficiently controlled according to the type of soil regime and equipment, impact when preventing equipment from falling, while foundation
Handling situations select suitable descending speed, Lai Tigao working efficiency.
2, the present invention is due to not only can control equipment falling speed, and can will delay using slow drop control valve assembly
Drop adjusting handle is tightened, and can effectively prevent the oil liquid in oil cylinder by leakage when multi-way valve neutral position, it is dilatory to solve
The whereabouts of machine equipment during long-distance transportation, ensure that the safety of transportational process.
3, the present invention has efficiently controlled the pressing force of cylinder rod chamber, has avoided equipment due to using overflow valve
When falling within hard ground, causes the impact of equipment or tractor rear wheel to be jacked up or excessive pressing force, cause transmission case
The problems such as bottom surface cracks.
4, the present invention is in slow drop control valve assembly due to using special structural shape, user be screwed into or back-out it is slow
During drop control valve handwheel, screw-down torque is small, and navigability is good；And slow drop control valve bar is not easy to be corroded, while O-shaped close
Seal will not be scratched in assembling process by the screw thread on application valve body.Reason has: first, using compact-sized slow falling tone
Screw rod is saved, user can easily rotate the valve rod of tightening of slow drop control valve handwheel, and closing oil cylinder rodless cavity leads to multi-way valve
Application valve body oil duct avoids user during tightening slow drop control valve handwheel, and since flowed friction is excessive, handwheel cannot be complete
Totally-enclosed application valve body oil duct, and the oil liquid of oil cylinder rodless cavity is caused to continue to leak into multi-way valve, cause equipment excessively to fall
The phenomenon that；Second, the thread segment of slow drop control valve bar is in the bottom of O-ring seal, and the oil liquid of application valve body can enter
Threaded portion plays lubricating action, reduces the frictional resistance between screw thread pair, while O-ring seal is located at slow falling tone section
The upper end of threaded stem also plays sealing function to slow drop control valve bar, prevents the corrosion of rainwater, air and pesticide；Third,
O-ring seal is in the threaded upper portion of slow drop control valve bar, and the slow drop control valve assembly after assembly is when being inserted into application valve body, O
Type sealing ring effectively prevents the damage of O-ring seal without the threaded portion on application valve body.
5, the present invention is acted on due to using a lesser return spring of rigidity in slow drop control valve assembly
When: oil liquid in oil cylinder is through regulating valve in too slow drop control valve assembly, the downward active force of return spring pushes regulating valve
It moves down, so that the conical surface of regulating valve is closed the drainback passage of a part, drainback passage is throttled, so as to easily realize down
The control of reduction of speed degree is effectively prevent when oil liquid temperature is low, and viscosity makes greatly that oil liquid frictional resistance is big, and single oil return active force is insufficient
To push regulating valve to move down, cause drainback passage that cannot close, and does not have the effect of decrease speed control.
6, present inventive concept is novel, clever structure, and is easy to fabrication and installation, has good use value, is adapted to work as
The development new demand of modern domestic market.
Detailed description of the invention
Fig. 1 is the mounting structure schematic diagram that a kind of tractor of the present invention suppresses regulating valve of burying；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the left view of Fig. 1；
Fig. 4 is the D-D diagrammatic cross-section of Fig. 2；
Fig. 5 is the structural schematic diagram that a kind of tractor of the present invention suppresses regulating valve of burying；
Fig. 6 is the top view of Fig. 5；
Fig. 7 is the right view of Fig. 5；
Fig. 8 is the left view of Fig. 5；
Fig. 9 is the structural schematic diagram for the slow drop control valve assembly that a kind of tractor of the present invention suppresses regulating valve of burying；
Figure 10 is that a kind of tractor of the present invention suppresses bury regulating valve and control method schematic diagram；
Figure 11 is that a kind of slow drop control valve handwheel that tractor suppresses regulating valve of burying of the present invention is fully screwed into status diagram；
Figure 12 is that a kind of slow drop control valve handwheel that tractor suppresses regulating valve of burying of the present invention is back-outed completely, and oil liquid is from multi-way valve
The structural schematic diagram of valve block is controlled when into oil cylinder；
Figure 13 is that a kind of slow drop control valve handwheel that tractor suppresses regulating valve of burying of the present invention is back-outed completely, oil liquid from oil cylinder into
The structural schematic diagram of valve block is controlled when entering multi-way valve；
In figure: 1, application valve body；2, slow drop control valve assembly, 2.1, slow drop adjusting handle,；2.2, pin shaft, 2.3, baffle, 2.4,
Retaining ring, 2.5, O-ring seal, 2.6, slow drop control valve bar, 2.7, return spring, 2.8, limit pin shaft, 2.9, regulating valve； 3,
Overflow valve；4, the first pressure measuring tie-in；5, the first screw plug；6, bonded washer；7, hole retaining ring, the 8, second pressure measuring tie-in；9, second
Screw plug；10, oil cylinder；11, multi-way valve.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and embodiments.Known by FIG. 1 to FIG. 9, a kind of tractor is suppressed
Bury regulating valve, including application valve body 1, slow drop control valve assembly 2, overflow valve 3, the first pressure measuring tie-in 4, screw plug 5, bonded washer
6, hole retaining ring 7, the second pressure measuring tie-in 8, second screw plug 9 etc.；It is corresponding that the slow drop control valve assembly 2 is mounted on application valve body 1
Slow drop control valve assembly F mounting hole in, then hole retaining ring 7 is stuck in the K slot of application valve body 1；Again respectively by overflow valve
3, the first pressure measuring tie-in 4, the first screw plug 5, bonded washer 6, the second pressure measuring tie-in 8, the second screw plug 9 are separately mounted to application valve body
In 1 corresponding hole.Its mesoporous retaining ring 7 and baffle 2.3 play position-limiting action to slow drop control valve bar 2.6.
The application valve body 1, comprising: slow drop control valve assembly F mounting hole；Overflow valve E mounting hole；First pressure measuring tie-in MB
Mounting hole, the second pressure measuring tie-in MAMounting hole, the first screw plug H mounting hole, the second screw plug G mounting hole, control valve PAFuel feed hole and control
Valve P processedBOil outlet, A1 oilhole, A2 oilhole, B1 oilhole, B2 oilhole, the K mounting hole of hole retaining ring 7.Slow drop control valve assembly F peace
Dress Kong Yuhuan drop control valve assembly 2 is spirally connected；Overflow valve E mounting hole is spirally connected with overflow valve 3；First pressure measuring tie-in MBMounting hole and
One pressure measuring tie-in 4 is spirally connected；Second pressure measuring tie-in MAMounting hole is spirally connected with the second pressure measuring tie-in 8；First screw plug H mounting hole and first
Screw plug 5 is spirally connected；Second screw plug G mounting hole is spirally connected with the second screw plug 9；Control valve PAFuel feed hole and control valve PBOil outlet leads to respectively
Oil pipe is crossed to be connected to multi-way valve 11；A1 oilhole, A2 oilhole, B1 oilhole, B2 oilhole pass through the upper and lower cavity of oil pipe Yu oil cylinder 10 respectively
Connection.
The slow drop control valve assembly 2, including it is slow drop adjusting handle 2.1, pin shaft 2.2, baffle 2.3, retaining ring 2.4, O-shaped close
Seal 2.5, slow drop control valve bar 2.6, return spring 2.7, limit pin shaft 2.8, regulating valve 2.9；Successively by O-ring seal 2.5,
The postpone end face Y of drop control valve bar 2.6 of retaining ring 2.4 is sleeved in the Q slot on slow drop control valve bar 2.6, by return spring 2.7
It is packed into the hole N on slow drop control valve bar 2.6, then regulating valve 2.9 is inserted into the hole N on slow drop control valve bar 2.6 again, is used
Limit pin shaft 2.8 connects slow drop control valve bar 2.6 and regulating valve 2.9；Baffle 2.3 is postponed the end face Y of drop control valve bar 2.6
It is inserted in, then by the hole X on the slow drop adjusting handle 2.1 of the end face Y of slow drop control valve bar 2.6 insertion, with pin shaft 2.2 by slow drop
Adjusting handle 2.1 ease up drop control valve bar 2.6 connection.
Known by Figure 10, the schematic diagram that bury regulating valve and control method are suppressed for a kind of tractor of this patent, to drag
Machine drawing suppresses lifting system of burying and provides a kind of control model and technical solution.
Below with reference to Figure 11, Figure 12, Figure 13 and combine Fig. 1 to Figure 10, with embodiment illustrate this patent described in one kind drag
The control method for regulating valve of burying is suppressed in machine drawing.
By Figure 11, Figure 12, Tu13Zhi, a kind of tractor described in this patent suppresses regulating valve of burying and its assembling is completed,
And be in can working condition.
1) known by Figure 11, if slow drop control valve handwheel 2.1 is all screwed into, multi-way valve 11 is at neutral position, regulating valve
2.9 have blocked oil liquid to enter the oil liquid of multi-way valve 11 by application valve body 1 from 10 cavity of resorption of oil cylinder, solve tractor over long distances
The whereabouts of equipment in transportational process, ensure that the safety of transportational process.
2) known by Figure 12, if slow drop control valve handwheel 2.1 is all back-outed, multi-way valve 11 in raised position, oil liquid from
Multi-way valve 11 enters control valve PAFuel feed hole pushes regulating valve 2.9 and return spring 2.7 to move up, until slow drop control valve
The end face R of bar 2.6 is bonded with the end face Z of regulating valve 2.9, and hydraulic fluid port is opened, and in this state, enters oil cylinder 10 from multi-way valve 11
Oil liquid be not throttled when passing through application valve body 1, the promotion speed of equipment remains unchanged, and operating efficiency is high.
3) known by Figure 13, if slow drop control valve handwheel 2.1 is all back-outed, multi-way valve 11 is in down position, oil cylinder 10
Oil return enter in application valve body 1, the active force of oil return active force and return spring 2.7 push together regulating valve 2.9 fall, block up
Firmly a part of back oil road, the caliber of back oil road become smaller, and oil liquid is throttled, to realize the slow drop control of falling speed, subtract
It is impacted caused by small equipment falling speed is too fast.
4) by Figure 12, Tu13Zhi, if slow 2.1 part of drop control valve handwheel is back-outed, oil liquid passes through control valve from oil cylinder 10
, can be by the control mode in above-mentioned 3 when body 1 enters multi-way valve 11, returning after only oil liquid is from oil cylinder 10 into application valve body 1
Oil duct caliber becomes smaller, and the falling speed of equipment can be smaller；Oil liquid enters oil cylinder 10 by application valve body 1 from multi-way valve 11
When, can by it is above-mentioned 2) in control mode, the stroke that regulating valve 2.9 moves up becomes smaller, and the channel of oil inlet also and then becomes
It is small, due to the diameter and stroke using reasonable slow drop control valve bar 2.6, do not influence oil input channel by area, therefore enter oil
The oil liquid of cylinder 10 does not throttle.When i.e. slow 2.1 part of drop control valve handwheel is back-outed, the falling speed of equipment reduces, and when rising
Speed it is constant, play the role of fall throttling and rise do not throttle, the rise time can be shortened, improve operating efficiency, reduce
The fever of hydraulic system.
5) by Figure 11, Figure 12, Tu13Zhi, during slow drop control valve handwheel 2.1 is screwed into or back-outs, due to using special
The structural shape and seal style of different slow drop control valve bar 2.6, screwing force is small when manipulating slow drop control valve handwheel 2.1, simultaneously
Avoid the corrosion phenomena of slow 2.6 thread segment of drop control valve bar and the damage of O-ring seal.
6) known by Figure 10, increase an overflow valve 3 in the rod chamber oil circuit of oil cylinder 10, user can according to soil regime and
The type of equipment adjusts the pressing force of 10 rod chamber of oil cylinder, effectively prevents pressing force is excessive to cause associated components
Damage；The oil return line of overflow valve 3, save the cost can be saved simultaneously.
This patent can not only apply on tractor, it is also possible to come control it is other need to control oil cylinder falling speed and under
In the similar device for pressing active force.
Finally it should be noted that: the foregoing is only a preferred embodiment of the present invention, is not limited to this hair
Bright full content, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art
For, formal modification can be still carried out to technical solution documented by previous embodiment, or to part of skill
Art feature is equivalently replaced.All made form modifications within thinking enlightenment of the invention, equivalent replacement etc., should all wrap
It is contained within the scope of the present invention.
Claims (4)
1. a kind of tractor suppresses regulating valve of burying, comprising: application valve body (1), slow drop control valve assembly (2), overflow valve (3),
First pressure measuring tie-in (4), the first screw plug (5), bonded washer (6), hole retaining ring (7), the second pressure measuring tie-in (8), the second screw plug
(9)；It is characterized by: the slow drop control valve assembly (2) is mounted on the corresponding slow drop control valve assembly F peace of application valve body (1)
It fills in hole, is then stuck in hole in the K slot of application valve body (1) with retaining ring (7)；By overflow valve (3), the first pressure measuring tie-in (4),
One screw plug (5), bonded washer (6), the second pressure measuring tie-in (8), that the second screw plug (9) is separately mounted to application valve body (1) is corresponding
In hole.
2. a kind of tractor according to claim 1 suppresses regulating valve of burying, it is characterised in that: the application valve body (1),
It include: slow drop control valve assembly F mounting hole；Overflow valve E mounting hole；First pressure measuring tie-in MBMounting hole, the second pressure measuring tie-in MAPeace
Fill hole, the first screw plug H mounting hole, the second screw plug G mounting hole, control valve PAFuel feed hole and control valve PBOil outlet, A1 oilhole, A2
Oilhole, B1 oilhole, B2 oilhole, the K mounting hole of hole retaining ring (7)；Slow drop control valve assembly F mounting hole and slow drop control valve assembly
(2) it is spirally connected；Overflow valve E mounting hole is spirally connected with overflow valve (3)；First pressure measuring tie-in MBMounting hole and the first pressure measuring tie-in (4) spiral shell
It connects；Second pressure measuring tie-in MAMounting hole is spirally connected with the second pressure measuring tie-in (8)；First screw plug H mounting hole and the first screw plug (5) spiral shell
It connects；Second screw plug G mounting hole is spirally connected with the second screw plug (9)；Control valve PAFuel feed hole and control valve PBOil outlet passes through oil pipe respectively
It is connected to multi-way valve (11)；A1 oilhole, A2 oilhole, B1 oilhole, B2 oilhole pass through oil pipe respectively and the upper and lower cavity of oil cylinder (10) connects
It is logical.
3. a kind of tractor according to claim 1 suppresses regulating valve of burying, it is characterised in that: the slow drop control valve is total
At (2), including slow drop adjusting handle (2.1), pin shaft (2.2), baffle (2.3), retaining ring (2.4), O-ring seal (2.5), slow drop
Regulating valve stem (2.6), return spring (2.7), limit pin shaft (2.8), regulating valve (2.9)；Successively by O-ring seal (2.5), gear
The postpone end face Y of drop control valve bar (2.6) of circle (2.4) is sleeved in the Q slot on slow drop control valve bar (2.6), by return spring
(2.7) it is packed into the hole N on slow drop control valve bar (2.6), regulating valve (2.9) is then inserted into slow drop control valve bar (2.6) again
On the hole N in, slow drop control valve bar (2.6) and regulating valve (2.9) are connected with limit pin shaft (2.8)；Baffle (2.3) is postponed
The end face Y of drop control valve bar (2.6) is inserted in, then drop adjusting handle (2.1) is delayed in the end face the Y insertion of slow drop control valve bar (2.6)
On the hole X in, with pin shaft (2.2) by slow drop adjusting handle (2.1) ease up drop control valve bar (2.6) connection.
4. a kind of tractor according to claim 1 suppresses regulating valve of burying, it is characterised in that: specific control method is such as
Under:
[1] oil liquid in control system enters multichannel by controlling A1 oilhole, the A2 oilhole of valve block (1) by oil cylinder (10) rodless cavity
When valve (11), the slow drop control valve handwheel (2.1) of slow drop control valve assembly (2) is screwed into extreme lower position, oil cylinder can be blocked
(10) channel of rodless cavity oil return and multi-way valve (11) oil circuit, the oil circuit of the control system is in close state at this time；By slow drop
It adjusts valve hand wheel (2.1) to back-out to extreme higher position, i.e., the face W on slow drop control valve bar is bonded with baffle (2.3), oil cylinder (10) nothing
The oil return of rod cavity does not throttle when entering multi-way valve (11) by A1 oilhole, the A2 oilhole of the control valve block (1), the whereabouts of equipment
Speed reaches maximum；During slow drop control valve handwheel (2.1) is screwed to extreme higher position from extreme lower position, equipment falling speed
It is increasing；
[2] in control system oil liquid by multi-way valve (11) by control valve block (1) A1 oilhole, A2 oilhole enter oil cylinder (10) nothing
When rod cavity, the regulating valve (2.9) and return spring (2.7) of slow drop control valve assembly (2) are boosted by the coming oil of multi-way valve (11), directly
The end face R on to slow drop control valve bar (2.6) is bonded with the end face Z on regulating valve (2.9), in this state, oil duct quilt completely
Open, by oil liquid be not throttled；
[3] user, can be by the slow drop adjusting handle (2.1) of slow drop control valve assembly (2) all in long-distance transportation or transition
It is screwed into, the oil liquid leakage in oil cylinder (10) rodless cavity can be blocked；
[4] when multi-way valve (11) is in down position, the oil liquid in control system is from multi-way valve (11) by application valve body (1)
B1 oilhole, B2 oilhole enter oil cylinder (10) rod chamber, and user can be according to the type of soil and equipment, the spiral shell of regulation relief valve (3)
Bar is screwed into or back-outs, to control the pressing force of oil cylinder (10) rod chamber, when preventing oil cylinder pressing force excessive caused by
Impact, equipment buries apart from excessive influence operation quality when too small；
[5] user can detect the pressure of two chambers of oil cylinder or more, row by the first pressure measuring tie-in (4) and the second pressure measuring tie-in (8)
Except the failure of hydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910394636.1A CN110094380A (en) | 2019-05-13 | 2019-05-13 | A kind of tractor suppresses bury regulating valve and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910394636.1A CN110094380A (en) | 2019-05-13 | 2019-05-13 | A kind of tractor suppresses bury regulating valve and control method |
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| Publication Number | Publication Date |
|---|---|
| CN110094380A true CN110094380A (en) | 2019-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910394636.1A Pending CN110094380A (en) | 2019-05-13 | 2019-05-13 | A kind of tractor suppresses bury regulating valve and control method |
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| Country | Link |
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| CN (1) | CN110094380A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606218A (en) * | 2021-08-13 | 2021-11-05 | 安徽德鸿机件制造有限公司 | Truck cab hydraulic oil cylinder |
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| CN107782151A (en) * | 2016-08-30 | 2018-03-09 | 马晓伟 | Furnace door raise-lower hydraulic circuit |
| CN210050118U (en) * | 2019-05-13 | 2020-02-11 | 第一拖拉机股份有限公司 | Forced-pressing soil-entering regulating valve of tractor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07250507A (en) * | 1994-03-10 | 1995-10-03 | Mitsubishi Agricult Mach Co Ltd | Oil pressure control device in tractor |
| JPH11178403A (en) * | 1997-12-19 | 1999-07-06 | Mitsubishi Agricult Mach Co Ltd | Hydraulic case of tractor |
| JP2001037303A (en) * | 1999-07-27 | 2001-02-13 | Mitsubishi Agricult Mach Co Ltd | Traveling vehicle for work |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113606218A (en) * | 2021-08-13 | 2021-11-05 | 安徽德鸿机件制造有限公司 | Truck cab hydraulic oil cylinder |
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