CN105570206B - A kind of hydraulic transformer with combined type valve plate - Google Patents

Abstract

A kind of hydraulic transformer with combined type valve plate, belong to hydraulic part technical field, it is characterized in that the external disk for being formed with internal tooth is sleeved on the outside of the inner disc for being formed with external tooth, fitted with the left side of floating disc the right side of inner disc and external disk, external disk internal tooth, inner disc external tooth and floating disc double wedge are with an annular groove, annular groove is divided into first, second, 3rd deep-slotted chip breaker, first oil duct of back casing is connected by the first oilhole with the first deep-slotted chip breaker, second oil duct of back casing is connected by the second oilhole with the second deep-slotted chip breaker, 3rd oil duct of back casing is connected by the 3rd oilhole with the 3rd deep-slotted chip breaker, external disk is rotated by spline by the first rotary actuator, inner disc is rotated by spline by the second motor, floating disc is connected by bearing pin with back casing, the pendulum angle scope of inner disc and external disk is 0 ° ~ 140 ± 10 °；Advantage is that hydraulic transformer has very big transformation ratio, can effectively reduce vibration and noise, it is easy to accomplish SERVO CONTROL.

Description

A kind of hydraulic transformer with combined type valve plate

Technical field

The invention belongs to hydraulic part technical field, and in particular to a kind of hydraulic transformer with combined type valve plate.

Background technology

Constant pressure network Secondary Regulation Technology is the very important energy-saving scheme of current hydraulic drive field.But, due to The technology of core parts -- hydraulic transformer is immature, and constant pressure network technology is difficult to be promoted always.Domestic and international multinomial patent Theoretical and experimental study is carried out to hydraulic transformer with paper, multinomial technical barrier has been faced, wherein two key technology difficulties For：（1）Hydraulic transformer valve plate is provided with three shape identical kidney slots, and in cylinder body rotary course, plunger cavity pressure is not Disconnected change, when plunger case goes to another kidney slot from a kidney slot, the fluid in plunger cavity is temporarily by two kidney slots Between valve face cut-out, within cut-off this period, plunger case cavity volume will become big or reduce, and the fluid in cavity will produce swollen Swollen or compression, can so cause pressure peak or the generation of serious cavitation very high, cause the increase of noise.By in waist Silencing groove is opened between shape groove can not very well solve noise problem, and Innas BV companies introduce " shuttle " technical scheme, reduce pressure Peak value and noise aspect obtain certain effect；（2）It is smaller that three fixed kidney slots on valve plate also result in transformation ratio scope, Researchers employ various Optimal improvements measures, but transformation ratio scope can not still meet actual demand.

The content of the invention

It is an object of the present invention to provide a kind of hydraulic transformer with combined type valve plate, can be efficiently against prior art Present in problem.The object of the present invention is achieved like this, and as shown in Fig. 1 ~ Fig. 8, it includes procapsid 1, back casing 11, preceding End cap 21, rear end cap 14, rotary shaft 3, plunger 5, plunger case 6, drive end bearing bracket 21 are arranged on the end of procapsid 1 by spring flange 20 Portion, rear end cap 14 is arranged on the end face of back casing 11 by second group of bolt 12, and procapsid 1 passes through first group with back casing 11 Bolt 9 is linked together, and rotary shaft 3 is arranged in the center cavity of the leading portion of procapsid 1 by clutch shaft bearing 2 and second bearing 4, post Plug cylinder 6 is connected by the n bulb of plunger 5 with the ball-and-socket on the rear end face of rotary shaft 3, and plunger case 6 and n plunger 5 form n Individual plunger cavity 7, n is positive integer, rotary shaft 3 and plunger case 6, and both axis are intersecting with sharp angle α in approximately the same plane, the present invention It is characterized in that：

The external disk 17 for being formed with external disk internal tooth 17.1 is sleeved on the outside of the inner disc 18 for being formed with inner disc external tooth 18.1, the He of inner disc 18 The right side of external disk 17 is fitted with the left side of floating disc 16, the crest top land of the left side and double wedge 16.1 of inner disc 18 and external disk 17 The concave spherical surface with the right-hand member of plunger case 6 is fitted respectively, and floating disc 16 is arranged in the center cavity of the left end of back casing 11, by alignment pin 10 are connected with back casing 11, and the first rotary actuator rotor 8 is coupled by the first spline J1 with external disk 17, is formed with the first external tooth 8.1 and second first rotary actuator rotor 8 of external tooth 8.2 be arranged on procapsid 1 and be formed with the first internal tooth 11.1 and the second internal tooth Between the end face of 11.2 back casing 11, the second rotary actuator rotor 13 passes through the second spline through back casing 11 and floating disc 16 J2 couples with inner disc 18, and the second rotary actuator rotor 13 for being formed with the first external tooth 13.1 and the second external tooth 13.2 is arranged on back casing In 11 center cavity, rear end cap 14 is connected by the second bolt group 12 with the end face of back casing 11；

As shown in Fig. 2 in said structure, external disk internal tooth 17.1, inner disc external tooth 18.1 and double wedge 16.1 are with annular groove 32 It is interior, annular groove 32 is divided into first, second, third deep-slotted chip breaker 22,23,24；As shown in figure 4, the first oil in back casing 11 Road 25 is connected by the first oilhole 28 and the first deep-slotted chip breaker 22 on floating disc 16 with plunger cavity 7, the second oil duct of back casing 11 26 are connected by the second oilhole 29 and the second deep-slotted chip breaker 23 on floating disc 16 with plunger cavity 7, the 3rd oil duct 15 of back casing 11 Connected with plunger cavity 7 by the 3rd oilhole 30 and the 3rd deep-slotted chip breaker 24 on floating disc 16, outside the first rotary actuator rotor first Tooth 8.1, first the second external tooth of rotary actuator rotor 8.2, the first internal tooth of back casing 11.1 and the second internal tooth of back casing 11.2 are located at In first annular chamber Q1, by first annular chamber Q1 be divided into the working chamber A1 of the first rotary actuator first, second, third, fourth, B1, C1, D1, connect with the first rotary actuator first, second, third, fourth hydraulic fluid port a1, b1, c1, d1 respectively, and second swings horse Up to rotor the first external tooth 13.1, the internal tooth 11.3 of second rotary actuator rotor the second external tooth 13.2, back casing the 3rd and back casing Four internal tooths 11.4 are located in the second annular chamber Q2, by the second annular chamber Q2 be divided into the second rotary actuator first, second, third, 4th working chamber A2, B2, C2, D2, connects with the second rotary actuator first, second, third, fourth hydraulic fluid port a2, b2, c2, d2 respectively It is logical；

First, second, third oilhole 28,29,30 and double wedge 16.1 of described floating disc 16 are located in anchor ring 31, convex With low pressure oilhole 30 respectively positioned at the extreme higher position of anchor ring 31 and extreme lower position, the first oilhole 28 abuts double wedge 16.1 to tooth 16.1 Side, high pressure oilhole 29 against double wedge 16.1 opposite side；

The crest top land of described external disk internal tooth 17.1 and the intrados of double wedge 16.1 are matched somebody with somebody with the periphery of inner disc 18 respectively Conjunction gap is 3 ~ 8um, and the crest top land of inner disc external tooth 18.1 and the extrados of double wedge 16.1 are matched somebody with somebody with the inner headed face of external disk 17 respectively Conjunction gap is 3 ~ 8um, and the anchor ring where the oilhole of the rear end face of anchor ring 31, annular groove 32 and plunger case 6 is just right, in external disk Tooth 17.1, inner disc external tooth 18.1, double wedge 16.1 are the 1 ~ 2 of the oilhole diameter of the rear end face of plunger case 6 in the width of 1/2 tooth eminence Times, the axis and the axis co-planar of plunger case 6 of straight line and rotary shaft 3 where the central point of double wedge 16.1 and low pressure oilhole 30, The angle of extreme higher position P1 of the external disk internal tooth 17.1 in annular groove 32 and extreme lower position P2 is θ 1, and inner disc external tooth 18.1 is in annulus The angle of the extreme higher position P3 and extreme lower position P4 in groove 32 is θ 2, then the pendulum angle scope difference of external disk 17 and inner disc 18 For the angle value of 0 ~ θ 1 and 0 ~ θ 2, θ 1 and θ 2 is 140 ± 20 °；

Described floating disc can also rotate 180 ° of installations, the also 180 ° of installations of corresponding rotation of back casing 11；

Advantage of the present invention and good effect are：

（1）By using combined type valve plate scheme, the high pressure deep-slotted chip breaker of the valve plate of hydraulic transformer, load deep-slotted chip breaker Size with low pressure deep-slotted chip breaker can be adjusted in a big way, and high pressure deep-slotted chip breaker and load deep-slotted chip breaker can independently change, liquid The transformation ratio scope of pressure transformer is significantly improved.

（2）High pressure deep-slotted chip breaker, load deep-slotted chip breaker and the interval of any two deep-slotted chip breaker is only one outer in low pressure deep-slotted chip breaker The width of tooth or internal tooth or double wedge, the gap length between adjacent deep-slotted chip breaker is significantly reduced, it is to avoid plunger cavity is in two deep-slotted chip breakers Between move when occur pressure surge, significantly reduce noise and cavitation erosion.

（3）External disk and inner disc are driven by independent rotary actuator respectively, it is easy to accomplish SERVO CONTROL, realize hydraulic transformer Response characteristic high.

Brief description of the drawings

Fig. 1 is the structural profile schematic diagram of hydraulic transformer.

Fig. 2 is A-A sectional views of Fig. 1.

Fig. 3 is B-B sectional views of Fig. 1.

Fig. 4（b）It is the sectional view of back casing.

Fig. 4（a）It is Fig. 4（b）Left view.

Fig. 4（c）It is Fig. 4（b）Right view.

Fig. 4（d）It is Fig. 4（c）C-C sectional views.

Fig. 5（b）It is the front view of external disk.

Fig. 5（a）The Fig. 5 for being（b）Left view.

Fig. 6（b）It is the front view of inner disc.

Fig. 6（a）The Fig. 6 for being（b）Left view.

Fig. 7（b）It is the front view of floating disc.

Fig. 7（a）The Fig. 7 for being（b）Left view.

Fig. 8 is inner disc and external disk hunting range schematic diagram.

In figure：1- procapsids, 2- clutch shaft bearings, 3- rotary shafts, 4- second bearings, 5- plungers, 6- plunger cases, 7- plungers Chamber, 8- the first rotary actuator rotors, 8.1- the first rotary actuator the first external tooths of rotor, outside the first rotary actuators of 8.2- rotor second Tooth, first group of bolt of 9-, 10- alignment pins, 11- back casings, the internal tooth of 11.1- back casings first, the internal tooth of 11.2- back casings second, The internal tooth of 11.3- back casings the 3rd, the internal tooth of 11.4- back casings the 4th, second group of bolt of 12-, 13- the second rotary actuator rotors, 13.1- the second rotary actuator the first external tooths of rotor, 13.2- the second rotary actuator the second external tooths of rotor, 14- rear end caps, 15- the 3rd Oil duct, 16- floating discs, 16.1- double wedges, 17- external disks, 17.1- external disk internal tooths, 18- inner discs, 18.1- inner disc external tooths, 19- spacers, 20- check rings, 21- drive end bearing brackets, the deep-slotted chip breakers of 22- first, the deep-slotted chip breakers of 23- second, the deep-slotted chip breakers of 24- the 3rd, the oil ducts of 25- first, The oil ducts of 26- second, 27- dowel holes, the oilholes of 28- first, the oilholes of 29- second, the oilholes of 30- the 3rd, 31- anchor rings, 32- annulus Groove, the first working chamber of the rotary actuators of A1- first, the second working chamber of the rotary actuators of B1- first, the rotary actuators of C1- first 3rd working chamber, the 4th working chamber of the rotary actuators of D1- first, the first working chamber of the rotary actuators of A2- second, B2- second puts Second working chamber of dynamic motor, the 3rd working chamber of the rotary actuators of C2- second, the 4th working chamber of the rotary actuators of D2- second, First hydraulic fluid port of the rotary actuators of a1- first, the second hydraulic fluid port of the rotary actuators of b1- first, the 3rd oil of the rotary actuators of c1- first Mouthful, the 4th hydraulic fluid port of the rotary actuators of d1- first, the first hydraulic fluid port of the rotary actuators of a2- second, the second of the rotary actuators of b2- second Hydraulic fluid port, the 3rd hydraulic fluid port of the rotary actuators of c2- second, the 4th hydraulic fluid port of the rotary actuators of d2- second, the highest order of P1- external disk internal tooths Put, the extreme lower position of P2- external disk internal tooths, the extreme higher position of P3- inner disc external tooths, the extreme lower position of P4- inner disc external tooths, J1- first Spline, the splines of J2- second, the first annular chambers of Q1-, the annular chambers of Q2- second, the maximum pendulum angle of θ 1- external disks 17, θ 2- inner discs 18 Maximum pendulum angle.

Specific embodiment

The present invention is described in further detail with reference to the accompanying drawings and examples.

As shown in figure 1, the hydraulic transformer is a kind of inclined shaft type hydraulic transformer, drive end bearing bracket 21, procapsid 1, back casing 11 and rear end cap 14 constitute the closing cavity volume of inclined shaft type hydraulic transformer；Drive end bearing bracket 21 exists completely without opened hole, rotary shaft 3 The inside of cavity volume is closed, the sealing of closing chamber is improve；Rotary shaft 3 is arranged on fore shell by clutch shaft bearing 2 and second bearing 4 In the center cavity of body 1, angle α=20 ° of the axis of rotary shaft 3 and the axis of plunger case 6, rotary shaft 3 and plunger case 6 revolve simultaneously During turning, there is stretching motion in plunger 5 in plunger cavity 7, and plunger cavity will realize oil suction and oil extraction；

As depicted in figs. 1 and 2, two the first rotary actuator rotors 8 of external tooth, procapsid 1 and back casing 11 are formed with common A twayblade rotary actuator is constituted, twayblade motor is distributed to the active force of housing in symmetrical expression, outside oil sources hydraulic oil Source and low pressure oil sources swing horse by first, second, third and fourth hydraulic fluid port a1, b1, c1, d1 of the first rotary actuator to first First, second, third and fourth working chamber A1, B1, C1, D1 fuel feeding for reaching and oil extraction, the first rotary actuator rotor 8 pass through first Spline J1 drives external disk 17 to realize swinging, and the pendulum angle of the first rotary actuator rotor 8 is equal to the pendulum angle θ 1, θ 1 of external disk 17 =140°；

As depicted in figs. 1 and 2, two the second rotary actuator rotors 13 of external tooth, back casing 11 and rear end caps 14 are formed with to be total to With constituting a twayblade rotary actuator, external high pressure oil sources and low pressure oil sources by the second rotary actuator first, second, Third and fourth hydraulic fluid port a2, b2, c2, d2 to the first, second, third and fourth working chamber A2 of the second rotary actuator, B2, C2, D2 fuel feeding and oil extraction, the second rotary actuator rotor 13 drive inner disc 18 to realize swinging by the second spline J2, the second rotary actuator The pendulum angle of rotor 13 is equal to the pendulum angle θ 2, θ 2=140 ° of inner disc 18；

As shown in Fig. 1,2,5,6,7, inner disc 18, external disk 17 and floating disc 16 have collectively constituted valve plate, instead of existing liquid The monomer-type valve plate of pressure transformer；

External disk 17 is sleeved on the outside of inner disc 18, and inner disc 18 and the right side of external disk 17 are pasted with the left side of floating disc 16 Close；The crest top land of inner disc external tooth 18.1 and the extrados of double wedge 16.1 are respectively 4um with the fit clearance of the inner headed face of external disk 17, The crest top land of external disk internal tooth 17.1 and the intrados of double wedge 18.1 are respectively 4um with the fit clearance of the periphery of inner disc 18, this On the one hand the minim gap of sample can realize lubrication, another aspect amount of leakage also very little, and such three teeth are just by 32 points of annular groove It has been segmented into first, second, third deep-slotted chip breaker 22,23,24；

Floating disc 16 is connected by alignment pin 10 with back casing 11, and one side floating disc 16 cannot revolve with respect to back casing 11 Turn, the right side of floating disc 16 pushes external disk 17 and inner disc 18 under pressure oil effect in the another aspect course of work, makes combination The convex spherical of the left end of formula valve plate is fitted with the concave spherical surface of the rear end of plunger case 6, then hydrostatic support can be formed between binding face Means of press seals area, on the one hand can realize lubrication, another aspect amount of leakage also very little；

The extreme higher position of anchor ring 31 residing for double wedge 16.1 is the dead zone location in the rotary course of plunger case 6, is substantially reduced Pressure in plunger cavity 7 increases sharply；

, respectively positioned at the both sides of double wedge 16.1, the 3rd hydraulic fluid port 30 is located at anchor ring 31 for first hydraulic fluid port 28 and the second hydraulic fluid port 29 Extreme lower position, this location arrangements can make the pendulum angle θ 1 of inner disc 18 and external disk 17, θ 2 reach maximum；

External disk internal tooth 17.1, inner disc external tooth 18.1, double wedge 16.1 are the rear end face of plunger case 6 in the width of 1/2 tooth eminence 1.5 times of oilhole diameter, not only avoid the oilhole in the course of work between adjacent deep-slotted chip breaker by the rear end face of plunger case 6 and realize Connection, and can effectively prevent pressure in plunger cavity 7 from increasing sharply；

Anchor ring where the oilhole of the rear end face of anchor ring 31, annular groove 32 and plunger case 6 is just right, and three internal diameter With external diameter all same, whole oil circuit can be made to avoid the occurrence of larger part throttle and to be lost；

As shown in figures 1 and 3, the first oil duct 25, the second oil duct 26 and the 3rd oil duct 15 has been opened in back casing 11 to distinguish It is connected with external high pressure oil sources, load oil sources and low pressure oil sources, then high pressure fuel source will be by the first oil duct 25, the first oilhole 28th, the first deep-slotted chip breaker 22 is connected with one or more plunger cavities 7, and load oil sources will be by the second oil duct 26, the second oilhole 29, the Two deep-slotted chip breakers 23 are connected with one or more plunger cavities 7, and low pressure oil sources will be by the 3rd oil duct 15, the 3rd oilhole 30, the 3rd arc Shape groove 24 is connected with one or more plunger cavities 7；

Inner disc 18 rotates relative to floating disc 16, the area of the first, the 3rd deep-slotted chip breaker 22,24 is changed, external disk 17 Rotated relative to floating disc 16, the area of second, third deep-slotted chip breaker 23,24 is changed, then the connection of three deep-slotted chip breakers The number of plunger cavity 7 can also change, and cause the pressure ratio in the first deep-slotted chip breaker 22 and the second deep-slotted chip breaker 23 to change；

External disk 17 and inner disc 18 is driven to rotate respectively using the first rotary actuator rotor 8 and the second rotary actuator rotor 13, The change response speed of hydraulic transformer output pressure and output flow can be significantly improved.

As shown in figure 1, floating disc 16 can rotate 180 ° of installations, the also 180 ° of installations of corresponding rotation of back casing 11 equally may be used To realize the function of hydraulic transformer.

Claims (2)

1. a kind of hydraulic transformer with combined type valve plate, it includes procapsid（1）, back casing（11）, drive end bearing bracket（21）、 Rear end cap（14）, rotary shaft（3）, plunger（5）, plunger case（6）, drive end bearing bracket（21）By spring flange（20）Installed in procapsid （1）End, rear end cap（14）By second group of bolt（12）Installed in back casing（11）End face on, procapsid（1）With it is rear Housing（11）By first group of bolt（9）Link together, rotary shaft（3）By clutch shaft bearing（2）And second bearing（4）Install In procapsid（1）In the center cavity of leading portion, plunger case（6）By n plunger（5）Bulb and rotary shaft（3）On rear end face Ball-and-socket is connected, plunger case（6）With n plunger（5）Form n plunger cavity（7）, n is positive integer, rotary shaft（3）And plunger Cylinder（6）Both axis are intersecting with sharp angle α in approximately the same plane, it is characterised in that：

It is formed with external disk internal tooth（17.1）External disk（17）It is sleeved on and is formed with inner disc external tooth（18.1）Inner disc（18）Outside, inner disc （18）And external disk（17）Right side and floating disc（16）Left side laminating, inner disc（18）And external disk（17）Left side and convex Tooth（16.1）Crest top land respectively with plunger case（6）The concave spherical surface laminating of right-hand member, floating disc（16）Installed in back casing（11）It is left In the center cavity at end, by alignment pin（10）With back casing（11）It is connected, the first rotary actuator rotor（8）By the first spline J1 and external disk（17）Connection, is formed with the first external tooth（8.1）With the second external tooth（8.2）The first rotary actuator rotor（8）It is arranged on Procapsid（1）Be formed with the first internal tooth（11.1）With the second internal tooth（11.2）Back casing（11）End face between, second swing Motor rotor（13）Through back casing（11）And floating disc（16）By the second spline J2 and inner disc（18）Connection, is formed with outside first Tooth（13.1）With the second external tooth（13.2）The second rotary actuator rotor（13）Installed in back casing（11）Center cavity in, rear end Lid（14）By second group of bolt（12）With back casing（11）End face connection；

External disk internal tooth（17.1）, inner disc external tooth（18.1）And double wedge（16.1）With in annular groove（32）It is interior, by annular groove（32）Point It is cut into first, second, third deep-slotted chip breaker（22、23、24）, back casing（11）The first interior oil duct（25）By the first oilhole （28）, the first deep-slotted chip breaker（22）With plunger cavity（7）Connection, back casing（11）The second interior oil duct（26）By the second oilhole （29）, the second deep-slotted chip breaker（23）With plunger cavity（7）Connection, back casing（11）The 3rd interior oil duct（15）By the 3rd oilhole （30）, the 3rd deep-slotted chip breaker（24）With plunger cavity（7）Connection, first the first external tooth of rotary actuator rotor（8.1）, the first rotary actuator The external tooth of rotor second（8.2）, the internal tooth of back casing first（11.1）With the internal tooth of back casing second（11.2）Positioned at first annular chamber （Q1）It is interior, by first annular chamber（Q1）It is divided into the working chamber of the first rotary actuator first, second, third, fourth（A1、B1、C1、 D1）, respectively with the hydraulic fluid port of the first rotary actuator first, second, third, fourth（a1、b1、c1、d1）Connection, the second rotary actuator turns Sub first external tooth（13.1）, second the second external tooth of rotary actuator rotor（13.2）, the internal tooth of back casing the 3rd（11.3）And back casing 4th internal tooth（11.4）Positioned at the second annular chamber（Q2）It is interior, by the second annular chamber（Q2）It is divided into the second rotary actuator first, 2nd, the three, the 4th working chamber（A2、B2、C2、D2）, respectively with the hydraulic fluid port of the second rotary actuator first, second, third, fourth（a2、 b2、c2、d2）Connection；

First, second, third oilhole（28、29、30）And double wedge（16.1）Positioned at anchor ring（31）It is interior, double wedge（16.1）With low pressure Oilhole（30）Anchor ring is located at respectively（31）Extreme higher position and extreme lower position, the first oilhole（28）Against double wedge（16.1）One Side, high pressure oilhole（29）Against double wedge（16.1）Opposite side.

2. there is the hydraulic transformer of combined type valve plate as claimed in claim 1, it is characterised in that：Described external disk internal tooth （17.1）Crest top land and double wedge（16.1）Intrados respectively with inner disc（18）Periphery fit clearance be 3 ~ 8um, it is interior Disk external tooth（18.1）Crest top land and double wedge（16.1）Extrados respectively with external disk（17）Inner headed face fit clearance for 3 ~ 8um, anchor ring（31）, annular groove（32）And plunger case（6）Rear end face oilhole where anchor ring it is just right, external disk internal tooth （17.1）, inner disc external tooth（18.1）, double wedge（16.1）It is plunger case in the width of 1/2 tooth eminence（6）The oilhole diameter of rear end face 1 ~ 2 times, double wedge（16.1）With low pressure oilhole（30）Central point where straight line and rotary shaft（3）Axis and plunger case （6）Axis co-planar, external disk internal tooth（17.1）In annular groove（32）Interior extreme higher position（P1）With extreme lower position（P2）Angle It is θ 1, inner disc external tooth（18.1）In annular groove（32）Interior extreme higher position（P3）With extreme lower position（P4）Angle be θ 2, then External disk（17）And inner disc（18）Pendulum angle scope be respectively 0 ~ θ 1 and the angle value of 0 ~ θ 2, θ 1 and θ 2 is 140 ± 20 °.