CN105736501B - Unloading valve is overloaded in rotating - Google Patents
Unloading valve is overloaded in rotating Download PDFInfo
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- CN105736501B CN105736501B CN201610254578.9A CN201610254578A CN105736501B CN 105736501 B CN105736501 B CN 105736501B CN 201610254578 A CN201610254578 A CN 201610254578A CN 105736501 B CN105736501 B CN 105736501B
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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
- F15B13/025—Pressure reducing valves
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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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/007—Overload
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Safety Valves (AREA)
Abstract
Unloading valve is overloaded the invention discloses a kind of rotating, including valve body (1), check valve (2), main valve plug (3), end cap (4), screw plug (5), control valve element (6) and spring regulation component, valve body (1) is provided with oil road (7), back oil road (8), oil input channel (9) and anti-oil duct (10), check valve (2) is communicated with oil input channel (9) and oil road (7), valve body (1) is provided with the flow passage structure for off-load, control to be provided with the first seal oil chamber (17) between valve element (6) and screw plug (5), the first oil duct mechanism is provided between oil input channel (9) and the first seal oil chamber (17), two grades of pressure-bearing valve elements (19) are slidably connected on valve body (1).A kind of i.e. achievable positive oil path high-pressure self-controlled unloading on same valve body and the rotating overload unloading valve of reverse low voltage control oil road oil circuit oil return are provided.
Description
Technical field
The present invention relates to hydraulic system technical field, more particularly to a kind of rotating overload unloading valve.
Background technology
Currently, in the hydraulic oil pipe system of two-way cylinder, two-way cylinder, oil pump, motor, fuel tank, list are generally included
To valve, high-pressure overflow valve, low pressure relief valve and hydraulic operated valve, motor is used to drive oil pump, oil pump respectively with fuel tank, check valve,
High-pressure overflow valve, low pressure relief valve and oil cylinder have bar oil pocket and communicated without the connection of bar oil pocket, and high-pressure overflow valve and low pressure are overflow
Stream valve overfall communicated with fuel tank, check valve and hydraulic operated valve are connected without bar oil pocket with oil cylinder and communicated, hydraulic operated valve with it is low
Pressurized overflow valve is communicated.The effect of the hydraulic oil pipe system of said structure is can to carry out pressure limiting to hydraulic system when oil pump is rotated forward
Overflow is controlled, and can rotate forward the hydraulic oil off-load of oil circuit when oil pump is inverted with low voltage control.Said system has pressure self-controlled overflow,
Really there is a defect while low voltage control unloading function:It can not realize that positive oil path high-pressure automatic control is unloaded on same valve body
Lotus, the off-load of low voltage control forward direction oil circuit.
The content of the invention
The technical problem to be solved in the present invention be overcome existing technological deficiency there is provided one kind on same valve body i.e.
Forward direction oil path high-pressure self-controlled unloading and the rotating overload unloading valve of reverse low voltage control oil road oil circuit oil return can be achieved.
The technical solution of the present invention is to provide a kind of rotating overload unloading valve with following structure：Including valve
Body, the check valve being arranged in valve body, main valve plug, the end cap being connected on valve body, the screw plug screwed on end cap, control valve element
With the spring regulation component being connected on valve body, control valve element is slidably connected on end cap and positioned at the axial direction of main valve plug and screw plug
In gap, valve body is sequentially provided with for the oil road connected with oil cylinder, back oil road, oil input channel and anti-oil duct, and valve from left to right
Body is provided with the first groove connected respectively with oil road, back oil road, oil input channel, second groove, the 3rd groove, and check valve enters
Oil pocket and go out oil pocket and communicated respectively with oil input channel and oil road, valve body is provided with the flow passage structure for off-load, and flow passage structure is
Refer to valve body to be provided with for connecting first groove with the first passage of second groove and for connecting second groove and the 3rd groove
Second channel, the first seal oil chamber is provided between control valve element and screw plug, provided with the between oil input channel and the first seal oil chamber
Two grades of pressure-bearing valve elements between main valve plug and control valve element, two grades are slidably connected on one oil duct mechanism, described valve body
The second seal oil chamber is provided between pressure-bearing valve element and end cap, two grades of pressure-bearing valve elements, which are provided with, to be used to connect anti-oil duct and the second sealing
The first flow of oil pocket；Valve body is provided with the second flow channel for being used for connecting oil input channel and anti-oil duct；Control valve element, which is provided with, to be used for
Connect the third flow channel of the first seal oil chamber and the second seal oil chamber；Being provided between described control valve element and screw plug is used to control
The reset assembly of valve core reset；Main valve core diameter and two grades of pressure-bearing valve core diameter values are all higher than control valve core diameter value.
As a preferred embodiment, described first flow refers to, two grades of pressure-bearing valve elements, which are provided with, to be used for and the second seal oil chamber
First axial hole on first radial direction through hole of connection, two grades of pressure-bearing valve elements, the first axial hole right-hand member is connected with the first radial direction through hole,
Left end is through two grades of pressure-bearing valve element left sides.It is preferred by this, it can be ensured that pressure oil can be in the second seal oil chamber and anti-oil
Flowed between road.
As a preferred embodiment, described valve body is provided with the 4th groove for being used for connecting with anti-oil duct, and second flow channel is
Refer to, main valve plug right part is provided with the second radial direction through hole communicated with the 4th groove, main valve plug is provided with the second axial hole, the second axle
Communicated to hole left end with the second radial direction through hole, right-hand member runs through main valve plug right side.It is preferred by this, it can be ensured that pressure oil can be with
Flowed between the 3rd groove and the 4th groove.
As a preferred embodiment, described third flow channel refers to, ring is provided with close to two grades of pressure-bearing valve element one end on control valve element
Connected in star and the 3rd radial direction through hole, the 3rd radial direction through hole two-port are connected with the bottom land of annular groove, and control valve element is provided with
3rd axial hole, the 3rd axial hole left end is communicated with the 3rd radial direction through hole, and right-hand member is through control valve element right side.It is excellent by this
Choosing, can connect the first seal oil chamber and the second seal oil chamber so that pressure oil flows between two chambers.
As a preferred embodiment, the control valve element is provided with pressure regulation stroke covering amount h1, main valve plug is provided with off-load stroke
Covering amount h3, main valve plug is provided with reversion overflow stroke covering amount h4, oil road (oil cylinder in other words when main valve plug is provided with reversion
Oil suction chamber) oil return covering amount h5, the pressure on a diameter of two grades of pressure-bearing valve elements of the 3rd radial direction through hole on two grades of pressure-bearing valve elements
Value is transferred to off-load take-off the stroke h2, h4 of low pressure>h3>H2, and h1>H2, h4 are not equal to h5.It is preferred by this, it can be ensured that anti-
When turning, main valve plug is to the oil return covering amount h5 that can be opened during left movement on main valve plug so that pressure during reversion in oil road
Oil flows through first passage to back oil road oil return.
As a preferred embodiment, the first described oil duct mechanism refers to, valve body is provided be used for communicating with oil input channel the 3rd
Passage, end cap is stifled provided with damping, and damping is blocked provided with the damping hole for being used to connect with third channel, and end cap, which is provided with, to be used to connect
The fourth lane of logical damping hole and the first seal oil chamber.By this preferably, pressure oil can be caused to flow to the first seal oil chamber, from
And promote control valve element to drive main valve plug and two grades of pressure-bearing valve core movements to the left.
As a preferred embodiment, described the first axial hole and the same axis of the second axial hole.By this preferably, it can cause
Resistance when pressure oil flows between the first axial hole and the second axial hole reduces.
As a preferred embodiment, described reset assembly refers to, provided with pressure between control valve element right part and screw plug left part
Spring.By this preferably, the right part for controlling valve element left part to be resisted against two grades of pressure-bearing valve elements can be caused.
The present invention when oil pump is rotated forward, the pressure oil of oil pump oil-out flows through oil input channel on valve body, after check valve from going out
Oil duct exports the oil suction chamber to oil cylinder, so that oil cylinder does work；Meanwhile, as oil input channel pressure gradually rises, pressure oil
The first seal oil chamber that the first oil duct mechanism feeds back to control valve element right side can be flowed through so that control valve element overcomes spring pressure regulation
The spring force of component, gradually promotes two grades of pressure-bearing valve elements and main valve plug to be moved to the left；Pressure oil in the first seal oil chamber
Flow through third flow channel and reach the second seal oil chamber so that the pressure rise in the second seal oil chamber, and due to two grades of pressure-bearing valve elements
Difference in areas with controlling valve element, so that two grades of pressure-bearing valve element right-hand members increase the thrust of main valve plug suddenly, in spring pressure regulation
In the case of the spring force of component is constant, two grades of pressure-bearing valve elements drive main valve plug to be moved farther leftward as, until the pressure in oil input channel
Power oil can directly through second channel off-load so that the pressure of oil input channel can be reached in the range of a low-pressure it is flat
Weighing apparatus, reaches that pressure oil is automatically switched to low pressure from high pressure in single oil pump hydraulic system, prevents hydraulic system from operating with full load and right
Oil pump electrical machinery causes damage；When oil pump is inverted, oil input channel is changed into oil pump suction mouthful and anti-oil duct is changed into the oil-out of oil pump, instead
The anti-oil duct that the pressure oil turned is flowed through on valve body enters main valve plug right-hand member and promotes main valve plug to be held to left movement, i.e. main valve plug with two grades
Pressure valve core is disengaged, and two grades of pressure-bearing valve element right parts are resisted against on end cap, and the 3rd is reached until pressure oil can flow through second flow channel
Groove and oil input channel, while pressure oil, which flows through first flow, reaches the second seal oil chamber, and because main valve core diameter is more than control
Valve core diameter, thus during oil pump reversion the hydraulic fluid port pressure of anti-oil duct also than rotating forward when control valve element control low many of pressure,
The purpose that hydraulic system works in low pressure range when having reached reversion, while also protecting Oil pump electrical machinery；Meanwhile, in main valve plug
The pressure oil in oil road can be caused to flow through first passage and reach that second groove, back oil road are returned in motion process to the left
Oil, that is to say, that the pressure oil of cylinder efficient intracavitary can flow through oil road, first groove, first passage, second in reversion
Groove, back oil road carry out off-load to fuel tank, so that oil cylinder piston return in the presence of external force.Aforementioned structure is arranged at same
On individual valve body, positive oil path high-pressure self-controlled unloading, the oil return of reverse low voltage control oil road oil circuit can be also realized.Therefore, originally
Invention provides one kind and positive oil path high-pressure self-controlled unloading and reverse low voltage control oil road oil can be achieved on same valve body
The rotating overload unloading valve of road oil return.
Brief description of the drawings
Fig. 1 is the sectional view that unloading valve is overloaded in rotating of the present invention.
Fig. 2 is the structural representation that unloading valve is overloaded in rotating of the present invention.
Fig. 3 is that the structural representation that valve element is controlled in unloading valve is overloaded in rotating of the present invention.
Shown in figure：1st, valve body, 2, check valve, 3, main valve plug, 4, end cap, 5, screw plug, 6, control valve element, 7, oil road,
8th, back oil road, 9, oil input channel, 10, anti-oil duct, 11, first groove, 12, second groove, the 13, the 3rd groove, the 14, the 4th groove,
15th, first passage, 16, second channel, the 17, first seal oil chamber, the 18, second seal oil chamber, 19, two grades of pressure-bearing valve elements, 20,
One radial direction through hole, the 21, first axial hole, the 22, second radial direction through hole, the 23, second axial hole, 24, annular groove, the 25, the 3rd footpath
To through hole, the 26, the 3rd axial hole, 27, third channel, 28, damping it is stifled, 29, damping hole, 30, fourth lane, 31, stage clip, 32,
Pressure regulation cap, 33, spring, 34, spring base, 35, spring cavity.
Embodiment
The invention will be further described with reference to the accompanying drawings and detailed description.
The operation principle of the present invention：When oil pump is rotated forward, the pressure oil of oil pump oil-out flow through oil input channel 9 on valve body 1,
The oil suction chamber to oil cylinder is exported from oil road 7 after check valve 2, so that oil cylinder does work；Meanwhile, with the pressure of oil input channel 9 by
Edge up height, and pressure oil can also flow through that third channel 27, damping hole 29, fourth lane 30 feed back to control valve element 6 right side
One seal oil chamber 17 so that control valve element 6 overcomes the spring force of spring regulation component, gradually promotes two grades of pressure-bearing valve elements 19 and main
Valve element 3 is moved to the left；It is zero or negative until controlling valve element 6 provided with pressure regulation stroke covering amount h1, i.e., on two grades pressure-bearing valve elements 19
Off-load take-off stroke h2 be zero or negative, then the pressure oil in the first seal oil chamber 17 flows through the 3rd axial hole the 26, the 3rd radially
Through hole 25 reaches the second seal oil chamber 18 so that the pressure rise in the second seal oil chamber 18, and due to two grades of pressure-bearing valve elements 19
Difference in areas with controlling valve element 6, so that two grades of right-hand members of pressure-bearing valve element 19 increase the thrust of main valve plug 3 suddenly, in spring
In the case of the spring force of regulation component is constant, two grades of pressure-bearing valve elements 19 drive main valve plug 3 to be moved farther leftward as, until main valve plug
3 are opened provided with off-load stroke covering amount h3, then the pressure oil in oil input channel 9 can be directly through second channel 16 to second
Groove 12, the off-load of back oil road 8, so that the pressure of oil input channel 9 can reach balance in the range of a low-pressure, reach single oil
Pressure oil is automatically switched to low pressure from high pressure in pump hydraulic system, prevents hydraulic system from operating with full load and being caused to Oil pump electrical machinery
Damage；
When oil pump is inverted, oil input channel 9 is changed into oil pump suction mouthful and anti-oil duct 10 is changed into the oil-out of oil pump, the pressure of reversion
Anti- oil duct 10, the 4th groove 14 that power oil is flowed through on valve body 1 enter the right-hand member of main valve plug 3 and promote main valve plug 3 to left movement, i.e. main valve
Core 3 is disengaged with two grades of pressure-bearing valve elements 19, and two grades of right parts of pressure-bearing valve element 19 are resisted against on end cap 4, until main valve plug 3 is provided with anti-
Turn overflow stroke covering amount h4 to be opened, pressure oil can flow through the second axial hole 23, the second radial direction through hole 22 and reach the 3rd ditch
Groove 13 and oil input channel 9, while pressure oil, which flows through the first axial hole 21, the first radial direction through hole 20, reaches the second seal oil chamber 18, again
Because the diameter of main valve plug 3 is more than the control diameter of valve element 6, so the hydraulic fluid port pressure of anti-oil duct 10 is also than rotating forward time control during oil pump reversion
The pressure that valve element 6 processed is controlled will be low it is many, the purpose that hydraulic system works in low pressure range when inverting has been reached, while also protecting
Oil pump electrical machinery is protected；Meanwhile, the oil return in main valve plug 3 to the left motion process provided with oil road 7 when inverting on main valve plug 3 is covered
Amount h5 is opened, so that the pressure oil in oil road 7, which flows through first passage 15, reaches second groove 12, back oil road 8
Carry out oil return, that is to say, that the pressure oil of cylinder efficient intracavitary can flow through oil road 7, first groove 11, first in reversion
Passage 15, second groove 12, back oil road 8 carry out off-load to fuel tank, so that oil cylinder piston return in the presence of external force.
In a word, it can rotated forward the invention discloses a kind of with single pressure fuel pump unloading control system of rotating, i.e. oil pump
When oil piping system pressure when reaching peak low pressure automatically can be adjusted to by high pressure, it is to avoid hydraulic system is high for a long time
Pressurized overflow and the critical defect for burning Oil pump electrical machinery；When can be rotated forward when oil pump is inverted with relatively low oil pressure control oil pump
The fluid externally exported lets out oil return box, directly utilizes the rotating switching hydraulic fluid port direction of oil pump.There is provided a kind of single oil pump hydraulic pressure
System, when lifting or promoting load, can not carry out the mistake of Oil pump electrical machinery and hydraulic system by other electric (device) elements
Carry protection technique.When motor reversal, the oil cylinder backhaul that can also will be lifted or promote away, all of the above process is only by one
Individual rotating overload unloading valve of the present invention is realized.
Rotating of the present invention overload unloading valve includes valve body 1, the check valve 2 being arranged in valve body 1, main valve plug 3, is connected to
End cap 4, the screw plug 5 screwed on end cap 4, control valve element 6 and the spring regulation component being connected on valve body 1 on valve body 1, valve
The valve pocket slided for main valve plug 3 is provided with body 1, control valve element 6 is slidably connected on end cap 4 and positioned at main valve plug 3 and screw plug 5
In axial gap, valve body 1 is sequentially provided with for the oil road 7 connected with oil pump, back oil road 8, oil input channel 9 and anti-oil from left to right
Road 10, and valve body 1 is provided with the first groove 11 connected respectively with oil road 7, back oil road 8, oil input channel 9, second groove 12, the
Three grooves 13, check valve 2 is communicated with oil input channel 9 and oil road 7, and valve body 1 is provided with the flow passage structure for off-load, flow passage structure
Referring to that valve body 1 is provided with is used to connect first groove 11 with the first passage 15 of second groove 12 and for connecting second groove 12
With the second channel 16 of the 3rd groove 13, the first seal oil chamber 17, oil input channel 9 and first are provided between control valve element 6 and screw plug 5
The first oil duct mechanism is provided between seal oil chamber 17, main valve plug 3 is connected with spring regulation component, the company of slip on described valve body 1
It is connected to two grades of pressure-bearing valve elements 19 between main valve plug 3 and control valve element 6, two grades of left parts of pressure-bearing valve element 19 and main valve plug 3
Right part pushes against or disengaged, and two grades of right parts of pressure-bearing valve element 19 push against or disengaged, two grades of pressure-bearing valve elements with control valve element 6 left part
It is provided with the second seal oil chamber 18 between 19 and end cap 4, two grades of pressure-bearing valve elements 19, which are provided with, is used to connecting anti-oil duct 10 and second close
The first flow of oil sealing chamber 18；Main valve plug 3 is provided with the second flow channel for being used for connecting oil input channel 9 and anti-oil duct 10；Control on valve element 6
Provided with the third flow channel for connecting the first seal oil chamber 17 and the second seal oil chamber 18；Described control valve element 6 and screw plug 5 it
Between be provided be used for control valve element 6 reset reset assembly；The diameter of main valve plug 3 and two grades of diameter values of pressure-bearing valve element 19 are all higher than control
The diameter value of valve element 6.
Described first flow refers to that two grades of pressure-bearing valve elements 19 are provided be used for connecting with the second seal oil chamber 18 first
First axial hole 21 on radial direction through hole 20, two grades of pressure-bearing valve elements 19, the right-hand member of the first axial hole 21 is connected with the first radial direction through hole 20,
Left end is through two grades of left sides of pressure-bearing valve element 19.
Described valve body 1 is provided with the 4th groove 14 for being used for connecting with anti-oil duct 10, and second flow channel refers to, main valve plug
3 right parts are provided with the second radial direction through hole 22 communicated with the 4th groove 14, and main valve plug 3 is provided with the second axial hole 23, the second axle
Communicated to the left end of hole 23 with the second radial direction through hole 22, right-hand member runs through the right side of main valve plug 3.
Described third flow channel refers to, the He of annular groove 24 is provided with close to two grades of one end of pressure-bearing valve element 19 on control valve element 6
3rd radial direction through hole 25, bottom land of the two-port of the 3rd radial direction through hole 25 with annular groove 24 is connected, and control valve element 6 is provided with the
Three axial holes 26, the left end of the 3rd axial hole 26 is communicated with the 3rd radial direction through hole 25, and right-hand member is through control valve element 6 right side.
The control valve element 6 is provided with pressure regulation stroke covering amount h1, and main valve plug 3 is provided with off-load stroke covering amount h3, main
Valve element 3 is provided with reversion overflow stroke covering amount h4, oil road 7 (oil cylinder oil inlet chamber in other words) when main valve plug 3 is provided with reversion
Oil return covering amount h5, the pressure value on a diameter of two grades of pressure-bearing valve elements 19 of the first radial direction through hole 20 on two grades of pressure-bearing valve elements 19
It is transferred to off-load take-off the stroke h2, h4 of low pressure>h3>H2, and h1>H2, h4 are not equal to h5.
The first described oil duct mechanism refers to that valve body 1 is provided with the third channel 27 for being used for communicating with oil input channel 9, end cap 4
Provided with damping stifled 28, damping stifled 28 is provided with the damping hole 29 for being used for connecting with third channel 27, and end cap 4, which is provided with, to be used to connect
The fourth lane 30 of the logical seal oil chamber 17 of damping hole 29 and first.
Described the first axial hole 21 and the same axis of the second axial hole 23, and the first axial hole 21 and the second axial hole 23
Internal diameter communicate.
Described reset assembly refers to, stage clip 31, control valve are provided between the control right part of valve element 6 and the left part of screw plug 5
The right side of core 6 is provided with the step surface for being available for stage clip 31 to position.
Wherein, spring regulation component includes pressure regulation cap 32, spring 33 and spring base 35, and the pressure regulation cap 32 is connected to valve
It is spring cavity 34 on the left side of body 1, between pressure regulation cap 32 and the left side of valve body 1, spring base 35 is socketed in the left part of main valve plug 3,
Spring 33 is located in spring cavity 34, and the two ends of spring 33 are withstood between pressure regulation cap 32 and spring base 35 respectively.
Presently preferred embodiments of the present invention is the foregoing is only, protection scope of the present invention is not intended to limit.It is all in this hair
Within bright claim, any modification, equivalent substitution and improvement for being made etc., should be included in protection scope of the present invention it
It is interior.
Claims (10)
1. unloading valve is overloaded in a kind of rotating, it includes valve body (1), check valve (2), the main valve plug being arranged in valve body (1)
(3) end cap (4), being connected on valve body (1), the screw plug (5) screwed on end cap (4), the control valve being arranged on end cap (4)
Core (6) and the spring regulation component being connected on valve body (1), valve body (1) be provided be used for connected with oil cylinder oil road (7),
Back oil road (8), oil input channel (9) and anti-oil duct (10), check valve (2) are communicated with oil input channel (9) and oil road (7), on valve body (1)
Provided with the flow passage structure for off-load, the first seal oil chamber (17), oil input channel (9) are provided between control valve element (6) and screw plug (5)
The first oil duct mechanism is provided between the first seal oil chamber (17), it is characterised in that：Valve body is slidably connected positioned at main valve on (1)
Two grades of pressure-bearing valve elements (19) between core (3) and control valve element (6), are provided with the between two grades of pressure-bearing valve elements (19) and end cap (4)
Two seal oil chambers (18), two grades of pressure-bearing valve elements (19), which are provided with, is used to connecting the of anti-oil duct (10) and the second seal oil chamber (18)
One runner；Valve body (1) is provided with the second flow channel for being used for connecting oil input channel (9) and anti-oil duct (10)；Control valve element (6) is provided with
Third flow channel for connecting the first seal oil chamber (17) and the second seal oil chamber (18)；Control between valve element (6) and screw plug (5)
Provided with the reset assembly for controlling valve element (6) to reset；Main valve plug (3) diameter and two grades of pressure-bearing valve element (19) diameter values are all higher than
Control valve element (6) diameter value.
2. unloading valve is overloaded in rotating according to claim 1, it is characterised in that：Described first flow refers to, two grades
Pressure-bearing valve element (19) is provided with the first radial direction through hole (20) for being used for connecting with the second seal oil chamber (18), two grades of pressure-bearing valve elements
(19) the first axial hole (21) is provided with, the first axial hole (21) right-hand member is connected with the first radial direction through hole (20), left end runs through two
Level pressure-bearing valve element (19) left side.
3. unloading valve is overloaded in rotating according to claim 2, it is characterised in that：Described valve body (1), which is provided with, to be used for
The 4th groove (14) connected with anti-oil duct (10), and second flow channel refers to that main valve plug (3) right part is provided with and the 4th groove
(14) the second radial direction through hole (22) communicated, main valve plug (3) be provided with the second axial hole (23), the second axial hole (23) left end with
Second radial direction through hole (22) is communicated, and right-hand member runs through main valve plug (3) right side.
4. unloading valve is overloaded in rotating according to claim 1, it is characterised in that：Described third flow channel refers to, controls
Annular groove (24) and the 3rd radial direction through hole (25) are provided with close to two grades of pressure-bearing valve element (19) one end on valve element (6), the 3rd radially
Bottom land of through hole (25) two-port with annular groove (24) is connected, and control valve element (6) is provided with the 3rd axial hole (26), the 3rd
Axial hole (26) left end is communicated with the 3rd radial direction through hole (25), and right-hand member is through control valve element (6) right side.
5. the rotating overload unloading valve according to claim any one of 1-4, it is characterised in that：The control valve element (6)
Pressure regulation stroke covering amount h1 is provided with, main valve plug (3) is provided with off-load stroke covering amount h3, and main valve plug (3) overflows provided with reversion
Popular journey covering amount h4, the oil return covering amount h5 of oil road (7), two grades of pressure-bearing valve elements (19) when main valve plug (3) is provided with reversion
On a diameter of two grades of pressure-bearing valve elements (19) of the first radial direction through hole (20) on pressure value be transferred to the off-load take-off stroke h2 of low pressure,
h4>h3>H2, and h1>H2, h4 are not equal to h5.
6. unloading valve is overloaded in rotating according to claim 1, it is characterised in that：Described valve body (1) is provided with difference
The first groove (11) that is connected with oil road (7), back oil road (8), oil input channel (9), second groove (12), the 3rd groove (13),
Described flow passage structure refers to that valve body (1) is provided with the first passage for being used for connecting first groove (11) and second groove (12)
(15) and for connecting the second channel (16) of second groove (12) and the 3rd groove (13).
7. unloading valve is overloaded in rotating according to claim 1, it is characterised in that：The first described oil duct mechanism refers to,
Valve body (1) is provided with the third channel (27) for being used for communicating with oil input channel (9), and end cap (4) is stifled (28) provided with damping, and damping is stifled
(28) damping hole (29) for being used for connecting with third channel (27) is provided with, end cap (4), which is provided with, to be used to connect damping hole (29)
With the fourth lane (30) of the first seal oil chamber (17).
8. unloading valve is overloaded in rotating according to claim 3, it is characterised in that：Described the first axial hole (21) and the
Two axial holes (23) same axis.
9. unloading valve is overloaded in rotating according to claim 1, it is characterised in that：Described reset assembly refers to, controls
Stage clip (31) is provided between valve element (6) right part and screw plug (5) left part.
10. unloading valve is overloaded in rotating according to claim 1, it is characterised in that：Described control valve element (6), which is slided, to be connected
It is connected in the axial gap on end cap (4) and positioned at secondary valve core (19) with screw plug (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610254578.9A CN105736501B (en) | 2016-04-20 | 2016-04-20 | Unloading valve is overloaded in rotating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610254578.9A CN105736501B (en) | 2016-04-20 | 2016-04-20 | Unloading valve is overloaded in rotating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105736501A CN105736501A (en) | 2016-07-06 |
| CN105736501B true CN105736501B (en) | 2017-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610254578.9A Expired - Fee Related CN105736501B (en) | 2016-04-20 | 2016-04-20 | Unloading valve is overloaded in rotating |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612700B (en) * | 2018-05-18 | 2020-11-24 | 安徽仕烽油压科技有限公司 | Plug-in type turnover control valve |
| CN111749943B (en) * | 2020-06-23 | 2024-05-17 | 安徽合力股份有限公司 | Follow-up rotary oil way switching valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10221077B4 (en) * | 2002-05-11 | 2005-03-17 | Horst Kleibrink | Spring-loaded oil overflow valve for membrane compressors |
| CN103498824B (en) * | 2013-10-14 | 2015-11-25 | 徐州重型机械有限公司 | A kind of balancing valve apparatus |
| CN104989690B (en) * | 2015-06-29 | 2017-02-01 | 象山盛韵汽配科技有限公司 | Overload relief valve |
| CN104963905B (en) * | 2015-06-29 | 2017-04-12 | 象山盛韵汽配科技有限公司 | Two-stage overflow unloading valve |
| CN205578387U (en) * | 2016-04-20 | 2016-09-14 | 象山盛韵汽配科技有限公司 | Unloading valve is carried to positive and negative turning over |
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2016
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| Publication number | Publication date |
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| CN105736501A (en) | 2016-07-06 |
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Effective date of registration: 20170727 Address after: 315700, No. 22, Jade Road, Chengdong Industrial Zone, Xiangshan County, Zhejiang, Ningbo Applicant after: Ningbo Chengwei Hydraulic Technology Co. Ltd. Address before: 315799 Zhejiang city of Ningbo province Xiangshan County dancy Street West Road No. 306 Applicant before: XIANGSHAN SHENGYUN AUTO PARTS CO., LTD. |
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