CN106930995A - A kind of compression apparatus for adjusting force of plunger hydraulic element - Google Patents
A kind of compression apparatus for adjusting force of plunger hydraulic element Download PDFInfo
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- CN106930995A CN106930995A CN201710320179.2A CN201710320179A CN106930995A CN 106930995 A CN106930995 A CN 106930995A CN 201710320179 A CN201710320179 A CN 201710320179A CN 106930995 A CN106930995 A CN 106930995A
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- oil duct
- hole
- mounting hole
- valve element
- plunger
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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
- F15B13/022—Flow-dividers; Priority valves
Abstract
The present invention relates to a kind of compression apparatus for adjusting force of plunger hydraulic element,Including plunger pallet,Valve plate and bearing device,Also include thrust adjusting part,The thrust adjusting part is arranged on valve plate or on bearing device,By the thrust adjusting part being installed in mounting hole,Hydraulic oil can be incorporated between the plunger pallet with relative rotation and valve plate or is incorporated between valve plate and bearing device,By the introducing of hydraulic oil,A part of frictional force of Port Plate Pair can be offset,And then can ensure on the premise of suitable residual clamping force coefficient,Reduce the frictional force between valve plate and plunger case or the frictional force between reduction valve plate and bearing device,Avoid the generation of " burning disk " phenomenon,Simultaneously,Also leakage rate will not be caused to increase because the gap between Port Plate Pair is excessive,Ensure that volumetric efficiency.
Description
Technical field
The present invention relates to technical field of hydraulic pressure, more particularly to a kind of compression apparatus for adjusting force of plunger hydraulic element.
Background technology
Plunger hydraulic element mainly includes axial plunger pump（Motor）, floating-cup type hydraulic pump（Motor）With based on the above two
Hydraulic transformer etc., above-mentioned Hydraulic Elements Port Plate Pair in the design process, generally use residual clamping force factor design
Principle.Residual clamping force coefficient is very big for the performance impact of Port Plate Pair, if residual clamping force coefficient is excessive, then valve plate
Friction with plunger case increases, mechanical efficiency reduction, or even " burning disk " occurs；If residual clamping force coefficient is too small, then
Valve plate and plunger case fit clearance is excessive causes leakage rate to increase, volumetric efficiency reduction.It is remaining according to current method for designing
Compress force coefficient and depend on the physical dimension such as diameter of plunger and valve plate mounting hole, therefore in the sizing of the elements such as radial plunger pump
Afterwards, residual clamping force coefficient will be unable to change, and have a strong impact on the entirety of the elements such as the lubrication property and radial plunger pump of Port Plate Pair
Efficiency.
Therefore, Port Plate Pair friction is excessive in how preventing plunger hydraulic element, it is to avoid " burning disk ", is current this area skill
Art personnel's technical issues that need to address.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of compression apparatus for adjusting force of plunger hydraulic element, the dress
Putting can be efficiently against technical problem present in prior art.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of thrust regulation dress of plunger hydraulic element
Put, including plunger pallet, valve plate and bearing device；The multiple that is circumferentially with of the plunger pallet is used to accommodate the cavitys of plunger
Structure；High pressure kidney slot and low pressure kidney slot are offered on the valve plate；The bearing device is provided with high-pressure oil passage and low
Force feed road；The plunger pallet, the valve plate and the bearing device are fitted arrange installation successively；Unlike the prior art
It is that, also including thrust adjusting part, mounting hole, the first oil duct and the second oil duct, the thrust adjusting part is installed on institute
State in mounting hole, the mounting hole, first oil duct and second oil duct are opened on the valve plate；Described first
The Single port of oil duct is communicated in the mounting hole, and another port is communicated in top surface and/or the bottom surface of the valve plate；Described second
The Single port of oil duct is communicated in the high pressure kidney slot, and another port is communicated in the mounting hole；The thrust adjusting part
Including valve element, elastic damping unit, the lateral surface of the valve element is connected with the mounting hole, and can be in the mounting hole
Slidably, the side of the valve element offers first annular groove, and one end of the valve element overcomes institute after being driven by external force
The elastic force of elastic damping unit is stated, is moved axially in the mounting hole, and then the first annular groove is oily by described first
Road and the second oil duct are turned on, and after external force reduces or loses, the elastic damping unit goes back to the valve element top, and then are disconnected described
Conducting between first oil duct and second oil duct.
On the basis of above-mentioned technical proposal, the present invention can also be improved further below.
Further, the elastic damping unit is spring, and the valve element is cylinder, and offers bullet on one bottom surface
Spring putting hole, the spring part is positioned in the spring putting hole, and remainder is exposed at the outer of the spring putting hole
Portion.
Further, the thrust adjusting part also includes fixed block, and the fixed block is fixedly installed in the mounting hole
Hole top, the valve element is installed on the bottom hole portion of the mounting hole, and the valve element does not open up the one of the spring putting hole
Bottom surface is fitted with the fixed block, and one end of the spring offsets with the bottom of the mounting hole；The fixed block and the valve
The one side of core laminating opens up dynamic hole, the built-in jacking block in power hole, and the jacking block is connected with the power hole, described
The lateral wall of fixed block offers the second annular groove, and second annular groove and the power hole hole underrun
3rd oil duct is connected, and the 4th oil duct, Single port and the high pressure kidney-shaped of the 4th oil duct are offered on the valve plate
Groove is connected, and another port connects with second annular groove；Hydraulic oil in the high pressure kidney slot is through the 4th oil duct
Into second annular groove, then enter the power bottom hole portion through the 3rd oil duct, by the jacking block jack-up, the top
Block slides after driving the valve element and compression spring in the mounting hole, after sliding the first annular groove simultaneously with it is described
First oil duct and second oil duct connect.
Further, the bottom hole of the mounting hole offers the first through hole outside connection, the bottom of the spring putting hole
The second through hole outside connection is offered, and second through hole will not block aperture by the jacking block.
Further, second oil duct connects with the first annular groove, and the first annular groove has top ring
Shape face and base circle face, and the top annular face area more than the base circle face area, it is described first oil
Road is opened near the side in the top annular face；Hydraulic oil in the high pressure kidney slot enters by second oil duct
The first annular groove, promotes the valve element to be slid in the mounting hole, and the first annular groove moves closer to described
First oil duct, while the spring is compressed by the valve element.
Further, at the initial installation position of the valve element, first oil duct is not located at the peace by its lateral surface
The port closure of hole side is filled, first oil duct is connected through the mounting hole with outer low pressure area.
Further, first oil duct is located at the oil duct junction of the top surface of the valve plate and/or bottom surface and is provided with depression
Groove, the oil duct junction is arranged on the center of groove, and the groove is circular arc, and the circular arc is same with the valve plate
The center of circle.
It is similar with above-mentioned technical proposal principle, present invention also offers following technical scheme.
A kind of compression apparatus for adjusting force of plunger hydraulic element, including plunger pallet, valve plate and bearing device；It is described
The multiple that is circumferentially with of plunger pallet is used to accommodate the cavity structures of plunger；High pressure kidney slot and low is offered on the valve plate
Pressure kidney slot；The bearing device is provided with high-pressure oil passage and low pressure oil way；The plunger pallet, the valve plate and described hold
Rest device is fitted arrange installation successively；Unlike the prior art, also including thrust adjusting part, mounting hole, the first oil
Road and the second oil duct, the thrust adjusting part are installed in the mounting hole, the mounting hole, first oil duct and institute
The second oil duct is stated to be opened on the bearing device；The Single port of first oil duct is communicated in the mounting hole, the other end
Mouth is communicated in the one side connected with the valve plate of the bearing device；The Single port of second oil duct is communicated in the height
Force feed road, another port is communicated in the mounting hole；The thrust adjusting part includes valve element, elastic damping unit, described
The lateral surface of valve element is connected with the mounting hole, and can be in the mounting hole slidably, and the side of the valve element is opened
First annular groove is provided with, one end of the valve element overcomes the elastic force of the elastic damping unit after being driven by external force, in institute
Axial movement in mounting hole is stated, and then the first annular groove turns on first oil duct and the second oil duct, external force reduces
Or after losing, the elastic damping unit goes back to the valve element top, so disconnect first oil duct and second oil duct it
Between conducting.
Equally, such scheme can also have following further improvement project.
Further, the elastic damping unit is spring, and the valve element is cylinder, and offers bullet on one bottom surface
Spring putting hole, the spring part is positioned in the spring putting hole, and remainder is exposed at the outer of the spring putting hole
Portion.
Further, the thrust adjusting part also includes fixed block, and the fixed block is fixedly installed in the mounting hole
Hole top, the valve element is installed on the bottom hole portion of the mounting hole, and the valve element does not open up the one of the spring putting hole
Bottom surface is fitted with the fixed block, and one end of the spring offsets with the bottom of the mounting hole；The fixed block and the valve
The one side of core laminating opens up dynamic hole, the built-in jacking block in power hole, and the jacking block is connected with the power hole, described
The lateral wall of fixed block offers the second annular groove, and second annular groove and the power hole hole underrun
3rd oil duct is connected, and the 4th oil duct, the Single port and the hydraulic oil of the 4th oil duct are offered on the bearing device
Road connects, and another port connects with second annular groove；Hydraulic oil in the high-pressure oil passage enters through the 4th oil duct
Enter second annular groove, then enter the power bottom hole portion through the 3rd oil duct, by the jacking block jack-up, the jacking block
Slid in the mounting hole after driving the valve element and compression spring, the first annular groove is simultaneously with described the after sliding
One oil duct and second oil duct connect.
Further, the bottom hole of the mounting hole offers the first through hole outside connection, the bottom of the spring putting hole
The second through hole outside connection is offered, and second through hole will not block aperture by the jacking block.
Further, second oil duct connects with the first annular groove, and the first annular groove has top ring
Shape face and base circle face, and the top annular face area more than the base circle face area, it is described first oil
Road is opened near the side in the top annular face；Hydraulic oil in the high-pressure oil passage enters institute by second oil duct
State first annular groove, promote the valve element to be slid in the mounting hole, the first annular groove moves closer to described the
One oil duct, while the spring is compressed by the valve element.
Further, at the initial installation position of the valve element, first oil duct is not located at the peace by its lateral surface
The port closure of hole side is filled, first oil duct is connected through the mounting hole with outer low pressure area.
Further, the 5th oil duct is offered on the valve plate, the Single port of the 5th oil duct is located at and the support
The one side that device fits, and connect with first oil duct, the another port of the 5th oil duct is located at the valve plate
The one side fitted with the plunger pallet.
Further, at least one is provided with the groove of depression, two oil ducts at two oil duct junctions of the 5th oil duct
Mouth is arranged on the center of groove, and the groove is circular arc, and the circular arc and the valve plate concentric.
The beneficial effects of the invention are as follows by the thrust adjusting part being installed in mounting hole, hydraulic oil being drawn
Enter to having between the plunger pallet and valve plate that relatively rotate or being incorporated between valve plate and bearing device, by high pressure
The introducing of oil, can offset a part of frictional force of Port Plate Pair, and then can ensure before suitable residual clamping force coefficient
Put, reduce the frictional force between valve plate and plunger case or the frictional force between reduction valve plate and bearing device, it is to avoid
The generation of " burning disk " phenomenon, meanwhile, also leakage rate will not be caused to increase because the gap between Port Plate Pair is excessive, it is ensured that
Volumetric efficiency.
Brief description of the drawings
Fig. 1 is that a kind of overall structure of the plunger displacement pump being provided with after the compression apparatus for adjusting force provided by the present invention is shown
It is intended to；
Fig. 2 is the schematic diagram of the specific embodiment of a kind of described valve plate in the present invention；
Fig. 3 is the valve plate and a kind of disassemblying structure schematic diagram of thrust adjusting part；
Fig. 4 is the disassemblying structure schematic diagram of the valve plate and another thrust adjusting part；
Fig. 5 is a kind of schematic diagram of specific embodiment of the valve element；
Fig. 6 to Fig. 9 is the cross section structure diagram that thrust adjusting part is installed in valve plate；
Figure 10 to Figure 12 is the cross section structure diagram that thrust adjusting part is installed in bonnet；
Figure 13 to Figure 15 is that the pressure-regulating device with three stage structure shows in the sectional structure of first section, stage casing, back segment respectively
It is intended to；
Figure 16 is the force diagram for compressing the plunger case after apparatus for adjusting force and valve plate provided using the present invention.
Wherein, the piece number in figure is expressed as：
1st, housing, 2, bearing, 3, main shaft, 4, plunger pallet, 5, plunger, 6, valve plate, 7, bonnet, 8, plunger cavity, 9, thrust
Adjusting part, 61, high pressure kidney slot, 62, low pressure kidney slot, 63, groove, 64, first through hole, 65, mounting hole, the 66, first oil
Road, the 67, second oil duct, the 68, the 4th oil duct, the 69, the 5th oil duct, 71, high-pressure oil passage, 91, spring, 92, valve element, 93, jacking block,
94th, fixed block, 95, circlip, 921, first annular groove, 922, spring putting hole, the 923, second through hole, the 941, second ring
Connected in star, 942, power hole, the 943, the 3rd oil duct.
Specific embodiment
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.Below in conjunction with accompanying drawing to principle of the invention
It is described with feature, it is necessary to illustrate, in the case where not conflicting, the feature in embodiment and embodiment in the application
Can be mutually combined.Example is served only for the explanation present invention, is not intended to limit the scope of the present invention.
Because compression apparatus for adjusting force provided by the present invention can be used for axial plunger pump（Motor）, floating-cup type hydraulic pump
（Motor）With the Hydraulic Elements such as the hydraulic transformer based on the above two, the common trait of this class component is exactly all have Port Plate Pair,
The present invention is mainly elaborated by taking axial plunger pump as an example below.
Fig. 1 is refer to, Fig. 1 is a kind of plunger displacement pump being provided with after the compression apparatus for adjusting force provided by the present invention
Overall structure diagram.In Fig. 1, the axial plunger pump includes housing 1, bearing 2, main shaft 3, plunger pallet 4, plunger 5, flow
Disk 6, bonnet 7, main shaft 3 drive plunger pallet 4 to rotate and drive the stretching out and be pressed into the periodically of plunger cavity 8 of plunger 5, fixed
The left and right end face of motionless valve plate 6 is fitted with the right side of plunger case 4 and the left side of bonnet 7 of rotation respectively, works as plunger
5 in plunger cavity 8 when stretching out, and the low pressure oil of external fuel tank enters plunger cavity 8 by the low pressure kidney slot 62 of valve plate 6, works as post
When plug 5 is pressed into plunger cavity 8, the hydraulic oil in plunger cavity 8 is discharged by the high pressure kidney slot 61 of valve plate 6.
A kind of compression apparatus for adjusting force of plunger hydraulic element provided by the present invention, mainly includes two kinds of realization sides
A kind of formula, mode for being mounted to valve plate 6, another kind is mounted to the mode of bonnet 7.
Fig. 2 to Fig. 9 is the mode for being installed on valve plate, in this way, a kind of plunger type liquid provided by the present invention
Press the compression apparatus for adjusting force of element, including plunger pallet 4, valve plate 6 and bearing device；The bearing device is shown in Fig. 1
In axial plunger pump, as bonnet 7, in some other elements, or support pallet, or similar other forms zero
Part.The multiple that is circumferentially with of the plunger pallet 4 is used to accommodate the cavity structures of plunger 5；High pressure is offered on the valve plate 6
Kidney slot 61 and low pressure kidney slot 62；The bearing device is provided with high-pressure oil passage 71 and low pressure oil way；The plunger pallet 4,
The valve plate 6 and the bearing device are fitted arrange installation successively；Also include thrust adjusting part 9, mounting hole 65, first
The oil duct 67 of oil duct 66 and second, the thrust adjusting part 9 is installed in the mounting hole 65, the mounting hole 65, described
First oil duct 66 and second oil duct 67 are opened on the valve plate 6；The Single port of first oil duct 66 is communicated in
The mounting hole 65, another port is communicated in top surface or the bottom surface of the valve plate 6, or is communicated in two sides simultaneously；Fig. 6 is
First oil duct 66 is communicated in the schematic diagram of top surface, and Fig. 7 is while being communicated in the schematic diagram on two sides.One end of second oil duct 67
Mouth is communicated in the high pressure kidney slot 61, and another port is communicated in the mounting hole 65；The thrust adjusting part 9 includes valve
Core 92, elastic damping unit, the lateral surface of the valve element 92 are connected with the mounting hole 65, and can be in the mounting hole 65
Inside slidably, the side of the valve element 92 offers first annular groove 921, and one end of the valve element 92 drives by external force
The elastic force of the elastic damping unit is overcome afterwards, the axial movement in the mounting hole 65, and then the first annular groove 921
The oil duct 67 of first oil duct 66 and second is turned on, external force reduces or after losing, the elastic damping unit is by the valve element
92 push up back, and then disconnect the conducting between first oil duct 66 and second oil duct 67.
By above-mentioned compression apparatus for adjusting force, after hydraulic oil is entered in the high pressure kidney slot 61 of valve plate 6, original state
Under, due to the plugging action of valve element 92, do not connected between the first oil duct 66 and the second oil duct 67, after valve element 92 is subject to external force,
Can be moved in mounting hole 65, and elasticity of compression damping unit, when the first annular groove 921 on valve element 92 is moved to simultaneously
When connecting with the first oil duct 66 and the second oil duct 67, both are turned on, now, hydraulic oil will be flowed into Port Plate Pair, and then produced
The separating force of a raw plunger case 4 and valve plate 6, or the separating force between valve plate 6 and bonnet 7, reduce plunger case 4 and match somebody with somebody
The thrust of flow table 6, or reduce the thrust between valve plate 6 and bonnet 7, reduce friction, it is to avoid the hair of " burning disk " phenomenon
It is raw.
The elastic damping unit can have numerous embodiments, can elastomeric material be made, or spring
91, at this point it is possible to by the valve element 92 to be designed as cylinder, and spring putting hole 922 is offered on one bottom surface, it is described
The part of spring 91 is positioned in the spring putting hole 922, and remainder is exposed at the outside of the spring putting hole 922, this
Sample may insure the stable elastic force of spring.
Thrust adjusting part also has numerous embodiments, in a kind of preferred embodiment, such as institute in Fig. 3, Fig. 6, Fig. 7
Show, the thrust adjusting part 9 also includes fixed block 94, the fixed block 94 is fixedly installed in the hole top of the mounting hole 65
Portion, the valve element 92 is installed on the bottom hole portion of the mounting hole 65, and the valve element 92 does not open up the spring putting hole 922
One bottom surface is fitted with the fixed block 94, and one end of the spring 91 offsets with the bottom of the mounting hole 65；The fixed block
94 one sides fitted with the valve element 92 open up dynamic hole 942, the built-in jacking block 93 in power hole 942, the jacking block 93 with
The power hole 942 is connected, and the lateral wall of the fixed block 94 offers the second annular groove 941, and described second
Annular groove 941 is connected with the oil duct 943 of hole underrun the 3rd in the power hole 942, and is offered on the valve plate 6
Four oil ducts 68, the Single port of the 4th oil duct 68 is connected with the high pressure kidney slot 61, another port and described second annular
Groove 941 connects；Hydraulic oil in the high pressure kidney slot 61 enters second annular groove through the 4th oil duct 68
941, then enter the bottom of power hole 942 through the 3rd oil duct 943, by the jack-up of the jacking block 93, the jacking block 93 drives
Slid in the mounting hole 65 after the valve element 92 and compression spring 91, after sliding the first annular groove 921 simultaneously with
First oil duct 66 and second oil duct 67 connect.
In the embodiment of above-mentioned thrust component, therefore, to assure that fixed block 94 therefore, it can to install to maintain static
Hole 65 is designed as step-like, and one end of fixed block 65 is mutually butted on step, and the other end is placed at the aperture of mounting hole 65, uses bullet
Property back-up ring 95 is fixed.
The hole bottom part of mounting hole 65 is installed on due to valve element 92, and its outer wall and hole inwall are connected, so
In order to ensure valve element energy normal movement, it is to avoid cannot be moved due to producing negative pressure, the bottom hole of the mounting hole 65 can be opened
The first through hole 64 of outside is communicated with, the bottom of the spring putting hole 922 offers the second through hole 923 outside connection,
And second through hole 923 will not block aperture by the jacking block 93.So, after valve element 92 is opened by top, valve element 92 and solid
Determine to form negative pressure between block 94, can be by the fluid in outer low pressure area from the spring putting hole 922 of the inhalation valve 92 of first through hole 64
It is interior, and then again by the second through hole 923 between valve element 92 and fixed block 94, to keep internal and external pressure balance, it is ensured that valve element
62 normal movement.
Fig. 8 and Fig. 9 for thrust component 9 another embodiment schematic diagram, as shown in the figure in, second oil duct 67
Connect with the first annular groove 921, the first annular groove 921 has top annular face and base circle face, and
The area in the top annular face is more than the area in the base circle face, to form pressure differential.First oil duct 66 is opened up
In the side near the top annular face；Hydraulic oil in the high pressure kidney slot 61 enters institute by second oil duct 67
First annular groove 921 is stated, promotes the valve element 92 to be slid in the mounting hole 65, the first annular groove 921 is gradually
Near first oil duct 66, while the spring 91 is compressed by the valve element 92.
For above two thrust adjusting part 9, valve element 92 can do different changes, by taking Fig. 8 as an example, this knot
Under structure, valve element 92 in an initial condition blocks the aperture that the first oil duct 66 is located in mounting hole 65, now, enters in hydraulic oil
Before entering Port Plate Pair, do not connected all the time with outer low pressure area between Port Plate Pair；In structure as shown in Figure 9, in the valve element
During 92 initial installation position, its lateral surface does not block the port that first oil duct 66 is located at the side of the mounting hole 65,
First oil duct 66 is connected through the mounting hole 65 with outer low pressure area, under this structure, high pressure kidney-shaped is entered in hydraulic oil
After groove, when pressure in the higher-pressure region of valve plate 6 is by low increasing, the axial force of valve element 92 also increases, then the meeting of valve element 92
Compression spring 91 is slided, and valve plate 6 is connected with low-pressure area first with the Port Plate Pair on the contact surface of plunger pallet 4, such as Figure 13
It is shown, it is then obstructed with high and low pressure, as shown in figure 14, finally connected with higher-pressure region, as shown in figure 15.So cause flow
Disk 6 occurs " stepped " increase of three-stage to the reaction force of plunger pallet 4, then residue pressure of the plunger pallet 4 to valve plate 6
Accordingly there is " stepped " reduction of three-stage in clamp force coefficient, prevents Port Plate Pair from rubbing excessive, it is to avoid " burning disk "；Conversely, high pressure waist
When pressure oil in shape groove 61 is reduced by height, there is " stepped " increase of three-stage in residual clamping force coefficient, prevents Port Plate Pair from letting out
Leakage increase, improves efficiency.
When the aperture during the first oil duct 66 is located at mounting hole 65 by valve element 92 in an initial condition is blocked, now plunger
Pallet 4 two-part " stepped " can occurs and be decreased or increased to the residual clamping force coefficient of valve plate 6, it is also possible to preferably avoid
Friction is excessive, and lifts whole efficiency.
In above-mentioned various schemes, in order to the pressure in regulation Port Plate Pair is better achieved, in first oil duct 66
The groove 63 of depression is provided with the top surface of the valve plate 6 and/or the oil duct junction of bottom surface, the groove 63 is circular arc, and
And preferably above-mentioned oil duct junction is arranged on the center of groove 63, and the circular arc and the concentric of the valve plate 6, such as Fig. 2 or
Shown in Fig. 4.
Because core of the invention is, how the oil of higher-pressure region is incorporated into Port Plate Pair, and plunger pallet 4, flow
Two Port Plate Pairs are formd between disk 6 and bearing device three, after thrust adjusting part 9 is installed in valve plate 6, by phase
The oil circuit answered is opened up, it is possible to achieve invention effect, same principle, it is also possible to by the thrust adjusting part in such scheme
It is installed in bearing device, still by taking the axial plunger pump shown in Fig. 1 as an example, wherein bearing device is the Figure 10 to Figure 12 of bonnet 7.
As thrust adjusting part is installed on the cross section structure diagram in bonnet.In this kind of structure, because bonnet 7 is located at flow
The bottom surface side of disk 6, in order to fluid is incorporated into the Port Plate Pair between plunger pallet 4 and valve plate 6, it is necessary in valve plate 6
The 5th oil duct 69 is inside opened up, this structure does not have the element for relatively rotating between valve plate 6 and bonnet 7.
Because principle is similar, the structure for thrust adjusting part 9 in bonnet 7 does not do repeated explanation herein,
Its structure type refers to the above-mentioned structure type being installed in valve plate 6.
No matter thrust adjusting part 9 is installed in valve plate 6 or bonnet 7, can set multiple, such as Fig. 2, Fig. 3,
Shown in Fig. 4, three are could be arranged to, corresponding mounting hole 65 and groove 63 are also three, in order to easy for installation, also for just
In the connection of related oil circuit, mounting hole 65 can be arranged in the exterior periphery of the place circumference of high pressure kidney slot 61；Similarly, if
When putting groove 63, one of them can be arranged near the high pressure kidney slot 61 at middle part, two other is symmetrically arranged at
The both sides of connecting line between port center on valve plate/bearing device axle center and middle groove 63.Adjusted using three thrusts
During section component, as shown in figure 3, can be arranged near the high pressure kidney slot 61 at middle part with one of them, E2 is designated as, two other point
Not in the both sides of the axis by the component, E1 and E3, and E1 and E3 are designated as on the axisymmetrical.The thrust at middle part is adjusted
The operating pressure of the spring in section component is P2, and the operating pressure of the spring in two thrust adjusting parts being arranged symmetrically is
P1, and P1<P2.
Consequently, it is possible to as described in Figure 16, as operating pressure P<During P1, as pressure P increases, valve plate 6 and plunger pallet 4
Separating force change according to curve ab, as operating pressure P=P1, thrust adjusting part E1, E3 at is started working, separation
Power increases to c points by b points " staged ", as operating pressure P1<P<During P2, as pressure P increases, separating force becomes according to curve cd
Change, as operating pressure P=P2, thrust adjusting part is started working at E2, and separating force increases to e points by d points " staged ",
As operating pressure P>During P2, separating force according to curve ef change, using compress apparatus for adjusting force separation force curve abcdef and
The separation force curve ag for being provided without compressing apparatus for adjusting force compares, and separates force curve abcdef and compresses the difference of force curve mn
Smaller, both residual clamping forces are smaller, reduce friction, it is to avoid " burning disk ".
In the description of the invention, it is to be understood that term " on ", it is D score, "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " top ", " bottom " " interior ", " outward ", " circumference " are based on side shown in the drawings
Position or position relationship, are for only for ease of the description present invention and are described with simplified, rather than the device or unit that indicate or imply meaning
Part with specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element, unless otherwise clearly restriction.For one of ordinary skill in the art
For, can as the case may be understand above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of compression apparatus for adjusting force of plunger hydraulic element, including plunger pallet（4）, valve plate（6）And bearing device；
The plunger pallet（4）Be circumferentially with it is multiple for accommodating plunger（5）Cavity structure；
The valve plate（6）On offer high pressure kidney slot（61）With low pressure kidney slot（62）；
The bearing device is provided with high-pressure oil passage（71）And low pressure oil way；
The plunger pallet（4）, the valve plate（6）And the bearing device is fitted arrange installation successively；
Characterized in that, also including thrust adjusting part（9）, mounting hole（65）, the first oil duct（66）And second oil duct（67）,
The thrust adjusting part（9）It is installed on the mounting hole（65）It is interior, the mounting hole（65）, first oil duct（66）And
Second oil duct（67）It is opened in the valve plate（6）On；First oil duct（66）Single port be communicated in the peace
Dress hole（65）, another port is communicated in the valve plate（6）Top surface and/or bottom surface；Second oil duct（67）Single port
It is communicated in the high pressure kidney slot（61）, another port is communicated in the mounting hole（65）；
The thrust adjusting part（9）Including valve element（92）, elastic damping unit, the valve element（92）Lateral surface with it is described
Mounting hole（65）It is connected, and can be in the mounting hole（65）Inside slidably, the valve element（92）Side offer
One annular groove（921）, the valve element（92）One end the elastic force of the elastic damping unit is overcome after being driven by external force,
The mounting hole（65）Interior axial movement, and then the first annular groove（921）By first oil duct（66）With the second oil
Road（67）Conducting, external force reduces or after losing, and the elastic damping unit is by the valve element（92）Push up back, and then disconnect described the
One oil duct（66）With second oil duct（67）Between conducting.
2. a kind of compression apparatus for adjusting force of plunger hydraulic element according to claim 1, it is characterised in that the bullet
Property damping unit be spring（91）, the valve element（92）It is cylinder, and spring putting hole is offered on one bottom surface
（922）, the spring（91）A part is positioned over the spring putting hole（922）Interior, remainder is exposed at the spring and places
Hole（922）Outside.
3. a kind of compression apparatus for adjusting force of plunger hydraulic element according to claim 2, it is characterised in that the pressure
Clamp force adjusting part（9）Also include fixed block（94）, the fixed block（94）It is fixedly installed in the mounting hole（65）Hole top
Portion, the valve element（92）It is installed on the mounting hole（65）Bottom hole portion, the valve element（92）The spring is not opened up to place
Hole（922）A bottom surface and the fixed block（94）Laminating, the spring（91）One end and the mounting hole（65）Bottom
Offset；
The fixed block（94）With the valve element（92）The one side of laminating opens up dynamic hole（942）, the power hole（942）It is interior
Top set block（93）, the jacking block（93）With the power hole（942）It is connected, the fixed block（94）Lateral wall offer
Second annular groove（941）, and second annular groove（941）With the power hole（942）Hole underrun the 3rd
Oil duct（943）It is connected, the valve plate（6）On offer the 4th oil duct（68）, the 4th oil duct（68）Single port with
The high pressure kidney slot（61）Connection, another port and second annular groove（941）Connect；
The high pressure kidney slot（61）In hydraulic oil through the 4th oil duct（68）Into second annular groove（941）,
Again through the 3rd oil duct（943）Into the power hole（942）Bottom, by the jacking block（93）Jack-up, the jacking block（93）
Drive the valve element（92）And compression spring（91）Afterwards in the mounting hole（65）Middle sliding, the first annular groove after sliding
（921）Simultaneously with first oil duct（66）With second oil duct（67）Connect.
4. a kind of compression apparatus for adjusting force of plunger hydraulic element according to claim 3, it is characterised in that the peace
Dress hole（65）Bottom hole offer connection outside first through hole（64）, the spring putting hole（922）Bottom offer company
Lead to the second outside through hole（923）, and second through hole（923）Will not be by the jacking block（93）Block aperture.
5. the compression apparatus for adjusting force of a kind of plunger hydraulic element according to claim 2, it is characterised in that described
Two oil ducts（67）With the first annular groove（921）Connect, the first annular groove（921）With top annular face and bottom
Portion's ring surface, and the top annular face area more than the base circle face area, first oil duct（66）Open
It is provided close to the side in the top annular face；The high pressure kidney slot（61）In hydraulic oil by second oil duct（67）
Into the first annular groove（921）, promote the valve element（92）In the mounting hole（65）Middle sliding, it is described first annular
Groove（921）Move closer to first oil duct（66）, while the spring（91）By the valve element（92）Compression.
6. a kind of compression apparatus for adjusting force of the plunger hydraulic element according to any one of claim 1 to 5, its feature exists
In in the valve element（92）Initial installation position when, its lateral surface is not by first oil duct（66）Positioned at the mounting hole
（65）The port closure of side, first oil duct（66）Through the mounting hole（65）Connected with outer low pressure area.
7. the compression apparatus for adjusting force of a kind of plunger hydraulic element according to claim 6, it is characterised in that described
One oil duct（66）Positioned at the valve plate（6）Top surface and/or bottom surface oil duct junction at be provided with the groove of depression（63）, the oil
Road junction is arranged on groove（63）Center, the groove（63）It is circular arc, and the circular arc and the valve plate（6）Together
The center of circle.
8. a kind of compression apparatus for adjusting force of plunger hydraulic element, including plunger pallet（4）, valve plate（6）And bearing device；
The plunger pallet（4）Be circumferentially with it is multiple for accommodating plunger（5）Cavity structure；
The valve plate（6）On offer high pressure kidney slot（61）With low pressure kidney slot（62）；
The bearing device is provided with high-pressure oil passage（71）And low pressure oil way；
The plunger pallet（4）, the valve plate（6）And the bearing device is fitted arrange installation successively；
Characterized in that, also including thrust adjusting part（9）, mounting hole（65）, the first oil duct（66）And second oil duct（67）,
The thrust adjusting part（9）It is installed on the mounting hole（65）It is interior, the mounting hole（65）, first oil duct（66）And
Second oil duct（67）It is opened on the bearing device；First oil duct（66）Single port be communicated in the installation
Hole（65）, another port is being communicated in the bearing device with the valve plate（6）The one side for connecting；Second oil duct（67）
Single port be communicated in the high-pressure oil passage（71）, another port is communicated in the mounting hole（65）；
The thrust adjusting part（9）Including valve element（92）, elastic damping unit, the valve element（92）Lateral surface with it is described
Mounting hole（65）It is connected, and can be in the mounting hole（65）Inside slidably, the valve element（92）Side offer
One annular groove（921）, the valve element（92）One end the elastic force of the elastic damping unit is overcome after being driven by external force,
The mounting hole（65）Interior axial movement, and then the first annular groove（921）By first oil duct（66）With the second oil
Road（67）Conducting, external force reduces or after losing, and the elastic damping unit is by the valve element（92）Push up back, and then disconnect described the
One oil duct（66）With second oil duct（67）Between conducting.
9. a kind of compression apparatus for adjusting force of plunger hydraulic element according to claim 8, it is characterised in that the bullet
Property damping unit be spring（91）, the valve element（92）It is cylinder, and spring putting hole is offered on one bottom surface
（922）, the spring（91）A part is positioned over the spring putting hole（922）Interior, remainder is exposed at the spring and places
Hole（922）Outside.
10. the compression apparatus for adjusting force of a kind of plunger hydraulic element according to claim 9, it is characterised in that described
Thrust adjusting part（9）Also include fixed block（94）, the fixed block（94）It is fixedly installed in the mounting hole（65）Hole
Top, the valve element（92）It is installed on the mounting hole（65）Bottom hole portion, the valve element（92）The spring is not opened up to put
Put hole（922）A bottom surface and the fixed block（94）Laminating, the spring（91）One end and the mounting hole（65）Bottom
Portion offsets；
The fixed block（94）With the valve element（92）The one side of laminating opens up dynamic hole（942）, the power hole（942）It is interior
Top set block（93）, the jacking block（93）With the power hole（942）It is connected, the fixed block（94）Lateral wall offer
Second annular groove（941）, and second annular groove（941）With the power hole（942）Hole underrun the 3rd
Oil duct（943）It is connected, the 4th oil duct is offered on the bearing device（68）, the 4th oil duct（68）Single port and institute
State high-pressure oil passage（71）Connection, another port and second annular groove（941）Connect；
The high-pressure oil passage（71）In hydraulic oil through the 4th oil duct（68）Into second annular groove（941）, then
Through the 3rd oil duct（943）Into the power hole（942）Bottom, by the jacking block（93）Jack-up, the jacking block（93）Band
Move the valve element（92）And compression spring（91）Afterwards in the mounting hole（65）Middle sliding, the first annular groove after sliding
（921）Simultaneously with first oil duct（66）With second oil duct（67）Connect.
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| CN201710320179.2A CN106930995B (en) | 2017-05-09 | 2017-05-09 | A kind of compression apparatus for adjusting force of plunger hydraulic element |
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| CN201710320179.2A CN106930995B (en) | 2017-05-09 | 2017-05-09 | A kind of compression apparatus for adjusting force of plunger hydraulic element |
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| Publication number | Publication date |
|---|---|
| CN106930995B (en) | 2018-09-25 |
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