阅读说明：本技术 在调节压力通道的区域中具有凹部的轴向活塞机 (With the axial piston machine of recess portion in the region for adjusting pressure channel ) 是由 A.阿佩尔格 于 2019-05-22 设计创作，主要内容包括：本发明涉及一种带有壳体(11)的轴向活塞机,所述壳体设有缸孔(50),其中调节活塞以能够线性运动的方式被容纳在所述缸孔(50)中,其中借助于所述调节活塞能够调节所述轴向活塞机的排量,其中所述缸孔(50)在向外敞开的端部上设有内螺纹(51),螺旋塞被旋入到所述内螺纹(51)中,从而在所述调节活塞与所述螺旋塞之间存在被封闭的缸室,其中在所述壳体(11)中布置有流体通道(43),该流体通道流体地被连接到所述缸室上。(The present invention relates to a kind of axial piston machines for having shell (11), the shell is equipped with cylinder holes (50), wherein regulating piston in a manner of linear movement can be accommodated in the cylinder holes (50), the discharge capacity of the axial piston machine can be wherein adjusted by means of the regulating piston, wherein the cylinder holes (50) is equipped with internal screw thread (51) on outwardly open end, vice is screwed into the internal screw thread (51), to there is the cylinder chamber being closed between the regulating piston and the vice, it is wherein disposed in the shell (11) fluid channel (43), it is connected to the fluid channel fluid in the cylinder chamber.)

1. having the axial piston machine (10) of shell (11), the shell is equipped with cylinder holes (50), and wherein regulating piston (40) is with energy The mode of enough linear movements is accommodated in the cylinder holes, wherein can adjust the axial direction by means of the regulating piston (40) The discharge capacity of piston machine (10), wherein the cylinder holes (50) is equipped with internal screw thread (51) on outwardly open end, vice (41) It is screwed into the internal screw thread, to there is the cylinder being closed between the regulating piston (40) and the vice (41) Room (42) is connected to the fluid channel fluid described wherein being disposed with fluid channel (43) in the shell (11) In cylinder chamber (42),

It is characterized in that, being disposed in the region of the internal screw thread (51) deeper than the depth of thread (52) of the internal screw thread (51) Recess portion (60；60'), thus the recess portion (60；Bottom section (62) 60') does not have threaded line (54), wherein the fluid Channel (43) imports in the bottom section (62) being previously mentioned.

2. axial piston machine according to claim 1,

Wherein when in central axes (56) orientation perpendicular to the cylinder holes (50) and across the fluid channel (43) stretching, extension When being observed in cutting plane, the recess portion (60；It 60') is configured to circle, so that spiral shell of its width (63) in the internal screw thread (51) Twice that the diameter (44) of the fluid channel (43) is at least in the region on line top (55) is big.

3. according to the axial piston machine of one of preceding claims,

Wherein when in the central axes (56) comprising the cylinder holes (50) and across the truncated of the fluid channel (43) Lai Shenzhan When being observed in face, the recess portion (60) be configured to it is trapezoidal, wherein the fluid channel (43) is imported completely corresponding flat In bottom section (62).

4. axial piston machine according to claim 1 or 2,

Wherein when in the central axes (56) comprising the cylinder holes (50) and across the cutting plane of the fluid channel (43) stretching, extension When middle observation, the recess portion (60') is configured to circle.

5. axial piston machine according to claim 3 or 4,

The wherein recess portion (60；It 60') is configured to the structure about axis of symmetry rotational symmetry, the axis of symmetry is parallel to institute It states central axes (56) Lai Shenzhan of cylinder holes (50) and the axis of symmetry is arranged in the inside of the cylinder holes (50).

Technical field

The present invention relates to a kind of axial piston machines as described in the preamble according to claim 1.

Background technique

From on April 10th, 2018 in internet address: http://www.boschrexroth.com/various/ It can be called under utilities/mediadirectory/download/index.jspobject_nr=RD91706-01-B A kind of axial piston machine is disclosed in catalogue.The axial piston machine is run as motor, and wherein the present invention can also apply to Pump.This axial piston machine is constructed with oblique disk structure, wherein the present invention also can be used in the axial piston machine of inclined shaft structure.

The axial piston machine has regulating piston, can adjust the axial piston machine by means of the regulating piston Discharge capacity.Reel cage is adjusted with the regulating piston herein.It, also can be described in for the axial piston machine of inclined shaft structure Mobile control lens (Steuerlinse) of regulating piston.

Summary of the invention

It is an advantage of the invention that can be realized the special of regulating piston for the cylinder holes with previously given size Big adjusting stroke.Here, the intensity of the axial piston machine, particularly the intensity of the shell do not inadvertently change.Institute Stating axial piston machine can be run with constant operating pressure.

It is proposed according to independent claims, is disposed with recess portion in the region of internal screw thread, spiral shell of the recess portion than internal screw thread Line depth is deep, so that the bottom section of the recess portion does not have threaded line, wherein fluid channel is imported in the bottom section being previously mentioned In.The fluid channel preferably completely imports in the bottom section, wherein the fluid channel is most preferably relative to described Arrange to the spaced from edges of bottom section.

The fluid channel is preferably attached in regulating valve, such as can be by for discharge capacity by means of the regulating valve Adjusting the discharge pressure of the axial piston machine is adjusted to predetermined value.Therefore, the fluid channel is also referred to as To adjust pressure channel.

The advantageous expansion scheme of the present invention and improvement project are illustrated in the dependent claims.

It can provide, be observed when orienting and passing through in the cutting plane of fluid channel stretching, extension in the central axes perpendicular to cylinder holes When, the recess configuration is circle, thus its width in the region on the screw thread top of the internal screw thread is at least the fluid Twice of the diameter in channel is big.Such recess portion can be particularly easy to and inexpensively with circular peripheral-mill or spherical cutter To be made.The overall diameter for the milling cutter being previously mentioned is bigger, and the material stress in the region of the recess portion is with regard to smaller.It is self-evident, this A overall diameter preferably just selects so big, so that the strength of materials is enough.

It can provide, be seen when in the central axes comprising the cylinder holes and in the cutting plane of fluid channel stretching, extension When examining, the recess configuration is trapezoidal, wherein the fluid channel is imported completely in corresponding flat bottom section.Thus Generate the bottom section being significantly defined.The bottom section is preferably parallel to the central axes of the cylinder holes to arrange.

It can provide, be seen when in the central axes comprising the cylinder holes and in the cutting plane of fluid channel stretching, extension When examining, the recess configuration is circle.Thus especially low material stress is generated in the region of the fluid channel.Accordingly Recess portion can be such as made by means of spherical cutter.

It can provide, the recess configuration is the structure about axis of symmetry rotational symmetry, and the axis of symmetry is parallel to The central axes of the cylinder holes are stretched and the axis of symmetry is arranged in the inside of the cylinder holes.Such recess portion can be easy Ground circular peripheral-mill or spherical cutter are made.

Self-evident, the noted earlier and following feature also to be explained can not only be in corresponding illustrated combination Middle use, and in others combination or can be used alone, without leaving the scope of the present invention.

Detailed description of the invention

The present invention is explained in detail below by way of attached drawing.

Fig. 1 shows the longitudinal section by axial piston machine of the invention；

Fig. 2 shows the partial longitudinal sections of the shell of the axial piston machine according to Fig. 1；

Fig. 3 show according to Fig. 1 axial piston machine, rough schematical partial cross section in region in recess portion；

Fig. 4 show according to Fig. 1 axial piston machine, another rough schematical partial cross section in region in recess portion；

Fig. 5 shows the another embodiment of the recess portion, corresponding with Fig. 4 partial cross section.

Specific embodiment

Fig. 1 shows the longitudinal section by axial piston machine 10 of the invention.The axial piston machine 10 includes shell 11, institute Stating shell includes housing base 12 and connecting plate 13.The housing base 12 is configured to tank shape, wherein the housing base is opened The connected plate 13 of mouth is closed.It is provided with two fluid couplings that do not see in Fig. 1 in the connecting plate 13, aspirates connector And compression fittings.

In the shell 11, what drive shaft 20 can be rotated by means of two swivel bearings 22 about rotation axis 26 Mode is supported.The spin axis bearing 22 is configured to tapered roller bearing (Kegelrollenlager) herein.The drive Moving axis 20 is connected with driving axle journal 21 to stretch from shell 11 so as to make it such as carry out rotation driving with electric motor It connects.Cylinder barrel 23 is arranged around drive shaft 20 between described two swivel bearings 22, the cylinder barrel and drive shaft 20 are in rotation Among drive connection.The cylinder barrel 23 is squeezed by spring 24 towards control panel 34 in the state of no pressure, the control panel It is supported on the connecting plate 13 again.In addition, hydraulic pressing force works in operation.The control panel 34 is equipped at least two A control breach (Steuerdurchbr ü chen), the control breach are fluidly connected with affiliated fluid coupling respectively.Institute Control panel 34 is stated preferably to be made of brass.Its anti-torsion (drehfest) be connected with the connecting plate 13, wherein the cylinder Cylinder 23 can be rotated relative to the control panel 34.

Multiple working pistons 30 are contained in the cylinder barrel 23.The working piston 30 uniformly divides around rotation axis 26 It arranges to cloth, wherein they are arranged essentially parallel to the rotation axis to orient.The working piston 30 and the cylinder barrel 23 1 Play the working chamber 27 for limiting respectively and there is variable volume.By the rotation of the cylinder barrel 23, the working chamber 27 can be alternately Fluid communication connection is carried out with one of the control breach in the control panel 34.

The working piston 30 is stretched from cylinder barrel 23 with one end, wherein the working piston is equipped with and can incline there The slide (Gleitschuh) 31 tiltedly moved.The slide 31 is on the flat sliding surface on reel cage (Schwenkwiege) 32 Sliding, wherein the slide is squeezed by the pressure at working chamber towards the reel cage 32.In order to which the slide 31 is in no pressure In the state of also follow the position of the reel cage 32 and be provided with return plate (R ü ckzugsplatte) 33, which is supported on On the spherical surface of pressure rings 25.The pressure rings 25 are preferably fixedly connected with drive shaft 20.

The reel cage 32 such as by means of two sliding bearings by can about 35 rotary motion of axis of rotation in a manner of It is supported in the housing base 12.The axis of rotation 35 is stretched perpendicular to rotation axis 26, wherein it and the rotation Shaft axis either intersection or is arranged with it at a distance of a small spacing.

The shell 11 is equipped with cylinder holes 50, and regulating piston 40 in a manner of linear movement can be accommodated in the cylinder holes. The regulating piston 40 is supported on the reel cage 32 integrally provided with piston rod 45, the piston rod in end side.Thinner piston Bar 45 allows the low banking motion of the regulating piston 40, so that it will not be blocked when the reel cage 32 is adjusted.

The cylinder holes 50 is closed to external application vice 41, so that there are fluids between vice 41 and regulating piston 40 is close The cylinder chamber 42 that feud is closed.It is described when passing through fluid channel (appended drawing reference 43 in Fig. 2) Xiang Suoshu cylinder chamber on-load pressure Regulating piston 40 is just mobile towards the reel cage 32, to adjust the reel cage 32.As a result, the discharge capacity of the axial piston machine 10 (Verdr ngungsvolumen) changes.

By means of (unshowned) reset spring on the reel cage 32 and/or the axis of rotation 35 can be passed through Eccentric arrangement to realize the reset force opposite with the adjusting force of regulating piston 40.

Fig. 2 shows the partial longitudinal sections of the shell 11 of the axial piston machine 10 according to Fig. 1.Cutting plane and Fig. 1's is truncated Face is identical.It can be seen that the cylinder holes 50, the cylinder holes are configured to cylinder about central axes 56 in cylindrical region 53.Institute Regulating piston 40 is stated hermetically to stick in this smooth region 53.It is abutted directly against on the region 53 of the cylinder (anschlie en) internal screw thread 51.The vice (appended drawing reference 41 in Fig. 1) is threaded into there, and the vice will Cylinder holes 50 is outwardly closed off.In general, the fluid channel 43 imports (ausm ü ndet) in the region 53 of the cylinder, because This position is best by strength reasons.

Within the scope of the invention, it should which the regulating piston 40 is realized with the cylinder holes 50 with previously given size King-sized adjusting stroke (Stellweg).Therefore, the fluid channel 43 has been laid into the area of the internal screw thread 51 In domain.Herein it has been shown that the intensity of the material of the shell 11 is no longer enough enduringly to endure (ertragen) In there Material stress appeared in operation.In order to make up (abzuhelfen) problem, it has been explained that by recess portion 60 of the invention, Its shape is explained in detail with reference to Fig. 3 to 5.

Fig. 3 show according to Fig. 1 axial piston machine 10, partial cross section in the region of recess portion 60.Cutting plane hangs down It is directly oriented in the central axes of the cylinder holes, wherein the cutting plane passes through the fluid channel 43 to stretch.The fluid is logical Road 43 is typically with the circular cross-sectional shape of diameter 44.It such as can be by means of circular peripheral-mill by recess portion of the invention (Scheibenfr sers) is made, and rotation axis is parallel to the central axes of cylinder holes to stretch, so that it can easily be inserted Enter into the cylinder holes.Therefore, the recess portion 60 is about 72 rotational symmetry of the axis of symmetry, the axis of symmetry and the rotation being previously mentioned Axis is overlapped.

It is logical that the overall diameter or milling diameter (Fr sdurchmesser) 71 of the circular peripheral-mill is significantly greater than the fluid The diameter 44 in road 43.Therefore, the recess portion 60, width 63 in region (appended drawing reference 55 in Fig. 4) on screw thread top to It is the twice big of the diameter 44 of the fluid channel 43 less.

Fig. 4 show according to Fig. 1 axial piston machine, another rough schematical part in the region of recess portion 60 Section.Cutting plane includes the central axes of the cylinder holes 50, wherein the cutting plane passes through the fluid channel 43 to stretch.About The cutting plane, the cross-sectional shape of the recess portion 60 are configured to trapezoidal.The central axes that the bottom section 62 is parallel to cylinder holes are come Stretching, extension.The fluid channel 43 imports there completely.The depth 61 of the recess portion 60 is configured to be greater than the depth of thread 52.Cause , no longer there is threaded line 54 in the bottom section 62 in this, the remainder of threaded line 54 is also not present.Two depth 61； 52 are measured using the screw thread top 55 of internal screw thread 51 or interior diameter as starting point.

The side wall 64 that the two sides of the recess portion 60 is opposed obliquely constructs.Gradient is more flat, occurs in operation Material stress is lower.

Furthermore in figure 4, it can be seen that the internal screw thread 51 is directly adjacent with the region 53 of the cylinder.The cylinder The interior diameter in the region 53 of shape is typically configured to be slightly less than the interior diameter of the internal screw thread 51 so that the screw thread top 55 not with The region 53 of the cylinder is aligned.

Fig. 5 shows the another embodiment of recess portion 60', corresponding with Fig. 4 partial cross section.Second of embodiment party The difference of formula and the first embodiment according to Fig. 1 to 4 is only in that, the recess portion 60', in current cutting plane Cross-sectional shape is no longer trapezoidal but circularly constructs.The bottom section 62 is thus no longer in a manner of defined by boundary It is fixed.More precisely, it is defined as following regions, no longer there is threaded line 54 in this region, threaded line 54 is also not present Remainder.The fluid channel 43 imports there completely.

As shown, the circle of the cross-sectional shape according to Fig. 3 can be less than according to the radius of circle of the cross-sectional shape of Fig. 5 Radius.But also it is contemplated that constructing described two radius of circles in the same manner.Corresponding recess portion 60' can such as be milled by means of spherical surface Knife is made.Its rotation axis does not need to be parallel to the central axes of cylinder holes to orient.It is preferred that so selecting the spherical cutter Rotation axis, so that the spherical cutter, especially its shank will not be collided with the shell.

Reference signs list:

10 axial piston machines

11 shells

12 housing bases

13 connecting plates

20 drive shafts

21 driving axle journals

22 swivel bearings

23 cylinder barrels

24 springs

25 pressure rings

The rotation axis of 26 drive shafts

27 working chambers

30 working pistons

31 slides

32 reel cages

33 return plates

34 control panels

35 axiss of rotation

40 regulating pistons

41 vices

42 cylinder chambers

43 fluid channels

The diameter of 44 fluid channels

45 piston rods

50 cylinder holes

51 internal screw threads

52 depths of thread

53 cylindrical regions

54 threaded lines

55 screw thread tops

The central axes of 56 cylinder holes

60 recess portions

60' recess portion (second of embodiment)

The depth of 61 recess portions

62 bottom sections

Width in the region on 63 screw thread tops

64 side walls

70 milling cutters

71 milling diameters

72 axis of symmetry