CN210290028U - Variable radial oil distribution pump - Google Patents

Variable radial oil distribution pump Download PDF

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Publication number
CN210290028U
CN210290028U CN201921394353.9U CN201921394353U CN210290028U CN 210290028 U CN210290028 U CN 210290028U CN 201921394353 U CN201921394353 U CN 201921394353U CN 210290028 U CN210290028 U CN 210290028U
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cylinder
variable
pump
oil
oil distribution
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张意
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张意
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Abstract

A variable radial oil distribution pump is an axial plunger pump, a plurality of plungers are axially arranged or are arranged in an angle of inclining 0 degrees to n degrees which is less than or equal to 10 degrees with the axial direction, and the variable radial oil distribution pump comprises a rotary cylinder driven by external force, a pump shell and an oil distribution ring which are kept static, a double-row angular contact ball bearing, a plunger cylinder hole, a plunger piston shoe assembly which is arranged in a plunger cylinder hole of the axial cylinder and rotates along with the axial cylinder, a return stroke disc which is arranged at the end part of the axial cylinder and rotates along with the axial cylinder, a variable head, a cylindrical bearing and a variable control component which is connected with the variable head and is used for controlling the inclination angle of the lower bottom surface of the variable head. The utility model provides a variable radial oil distribution pump is a new pump of defect research and development design who exists among overcoming various oil pump prior art at home and abroad. The shaft and the cylinder are integrally arranged, so that an oil distribution disc, a spline shaft and an internal spline in a cylinder hole in the prior art are omitted, raw materials are saved, the process is simplified, and the production efficiency and the economic benefit are improved.

Description

Variable radial oil distribution pump
Technical Field
The utility model belongs to the technical field of hydraulic component, concretely relates to radial oil distribution pump of variable.
Background
In view of the prior art at home and abroad, the traditional plunger oil pump can be roughly divided into a radial plunger pump and an axial plunger pump. The radial plunger pump is formed by radially installing a plurality of semi-circular head plungers in cylinder holes of a rotor. The plunger is pressed against the inner wall of the stator by the centrifugal force of the oil distribution shaft and the rotor in rotation and the oil pressure force supplied by the gear pump, when the rotor rotates clockwise, the eccentric distance e exists between the stator and the rotor, so that the plunger gradually extends outwards when going around the upper half circle of the diameter, the volume of the space in the oil cylinder is changed from small to large to form partial vacuum to absorb oil, when the plunger rotates to the lower half circle, the inner wall of the stator pushes the plunger inwards, and the volume of the space in the oil cylinder is changed from large to small to discharge oil. Since the oil distributing shaft is fixed, oil can be sucked from the upper half oil suction chamber and discharged from the lower half oil discharge chamber. The flow of the oil pump can be changed by changing the eccentricity e of the rotor. The direction of the oil transportation can be changed by changing the eccentric direction. If the rotor is deviated to the left, the upper side of the oil distribution shaft absorbs oil and the lower side discharges oil; if the rotor is deviated to the right, oil is absorbed below the oil distribution shaft and oil is discharged above the oil distribution shaft. If the rotor moves to the middle of the stator, the flow of the oil pump is reduced from large to small until the flow reaches zero. The traditional radial plunger pump is assembled by more than 30 parts, and has the defects of complex structure, large volume, heavy weight, high manufacturing difficulty and the like.
A conventional manual variable displacement oil pump is a plurality of plunger shoe assemblies axially mounted in cylinder bores of a cylinder block. When the transmission shaft drives the cylinder body to rotate, the plunger piston shoe assembly reciprocates in the cylinder hole under the thrust action of the inclined plane of the swash plate and the stretching action of the return disc, so that the space volume in the cylinder hole is changed to realize oil absorption and oil discharge. The traditional manual variable oil pump has the defects that the two planes are easy to wear, the maintenance frequency of the oil pump is increased, the service life of the oil pump is shortened, the working efficiency is reduced and the like due to the fact that the bottom plane of the cylinder body and the upper plane of the oil distribution disc rotate in a static pressure mode to generate friction.
The utility model discloses a variable axial plunger pump of inventor's prior invention, patent document CN201510376816, the plunger pump is radial distribution pump, including the transmission shaft that receives external drive and rotate, with cylinder body, the flow distribution cover of transmission shaft connection, flow distribution shaft and make the variable control unit of plunger pump variable output fluid; the cylinder body, the flow distribution sleeve and the flow distribution shaft are all arranged coaxially with the transmission shaft. However, the structure of the main body part is too complex, and the coaxial difficulty between parts is large, so that the aims of improving the rotating speed of the oil pump, improving the working pressure and increasing the flow rate are difficult to achieve.
Therefore, a new variable displacement oil pump needs to be designed.
Disclosure of Invention
The utility model aims to provide a variable radial oil distribution pump with simple structure, small volume, light weight, high working pressure, large medium flow, low noise and long service life, which solves the problems that the traditional radial plunger pump proposed in the background art is assembled by more than 30 parts, has the defects of complex structure, huge volume, heavy weight, large manufacturing difficulty and the like; traditional axial plunger pump, because it is the rotatory oil of joining in marriage of bottom static pressure, there is cylinder body baseplane and the last plane of joining in marriage the food tray and produces the friction, causes two planes to produce wearing and tearing easily, and then leads to oil pump maintenance frequency to increase, oil pump life shortens and defect problems such as work efficiency reduction.
In order to achieve the above object, the utility model provides a variable radial oil distribution pump, variable radial oil distribution pump is axial plunger pump, and many plungers set up along the axial or all be with the axial angle setting that the slope 0 is less than n and is less than or equal to 10, variable radial oil distribution pump includes the rotatory cylinder of external force drive, keeps static pump case and oil distribution ring, double-row angular contact ball bearing, plunger jar hole, set up in the plunger jar downthehole of axle jar and along with the rotatory plunger piston shoe subassembly of axle jar, set up at axle jar tip and along with the rotatory return stroke dish of axle jar, variable head, cylindrical bearing and with the variable head is connected and is used for controlling thereby the variable control part of the inclination of the lower bottom surface of variable head control fluid output volume;
the shaft cylinder comprises two cylinders which are integrally formed and coaxial and have different outer diameters, wherein the large cylinder is positioned at the far end of a power source for driving the shaft cylinder to rotate, and the small cylinder is positioned at the near end of the power source; an oil distribution ring, a double-row angular contact ball bearing and a cylindrical bearing which are arranged in the pump shell are all arranged coaxially with the shaft cylinder, the oil distribution ring and the double-row angular contact ball bearing are sleeved on a small cylinder of the shaft cylinder, and the cylindrical bearing is arranged on the radial outer side of a large cylinder; the oil distribution ring is provided with two through holes in radial direction, radial outer side ports of the two through holes are respectively matched and communicated with an oil suction port and an oil discharge port arranged on the pump shell, radial inner side ports of the through holes are communicated with an oil liquid channel arranged in the shaft cylinder, and a fit clearance of 0.02-0.10 mm is arranged between a small cylinder of the shaft cylinder and the inner diameter of the oil distribution ring; a plurality of plunger cylinder holes are formed in the large cylinder body of the shaft cylinder, a plunger piston shoe assembly is arranged in each plunger cylinder hole, the piston shoe end of each plunger piston shoe assembly is connected with a return disc outside each plunger cylinder hole, and each plunger cylinder hole is communicated with a through hole of an oil distribution ring through an oil distribution groove formed in the small cylinder body of the shaft cylinder through an oil channel in the shaft cylinder; the oil distribution pump also comprises a top column sleeve hole positioned in the radial center of the large cylinder of the shaft cylinder and a jacking component used for jacking the rotary return disc on the lower bottom surface of the variable head, and the jacking component comprises a pressure-bearing spring arranged in the top column sleeve hole.
In a specific embodiment, the variable control part comprises a ball head rod, a variable piston, an adjusting screw rod assembly, a variable body flange, a dial seat assembly and a flange cover; the variable piston is arranged at the end part of the pump shell, the axial direction of the variable piston is vertical to the axial direction of the shaft cylinder, a ball head rod is arranged between the variable head and the variable piston, an adjusting screw rod assembly is arranged at one axial end of the variable piston, and a dial seat assembly is arranged on the outer side of the axial middle part of the variable piston; the variable piston can move relatively by adjusting the adjusting screw rod assembly, so that the ball head rod is driven to change the angle of the inclined plane of the variable head; the variable control part also comprises a variable body flange which is sleeved on the adjusting screw rod assembly and is connected with one end of the variable piston and a flange cover which is arranged at the other end of the variable piston.
In a specific implementation manner, the variable control part further comprises a limiting block sleeved on the adjusting screw assembly, and the limiting block is arranged between the variable body flange and the variable piston in the axial direction of the variable piston.
In a particular embodiment, the oil distribution ring and the double row angular contact ball bearing are axially adjacent and the oil distribution ring is located relatively at the proximal end of the power source and the double row angular contact ball bearing is located relatively at the distal end of the power source.
In a specific embodiment, the variable radial oil distribution pump further comprises a steel bushing which is arranged in the pump shell and fixedly arranged on the radial periphery of the large cylinder of the shaft cylinder and used for increasing the rigidity and hardness of the shaft cylinder, the steel bushing rotates along with the rotation of the shaft cylinder, the material of the steel bushing is different from that of the shaft cylinder, and the cylindrical bearing is sleeved on the periphery of the steel bushing; the variable radial oil distribution pump further comprises a lower flange and a framework oil seal, the lower flange is sleeved on the radial outer side of the small cylinder end of the shaft cylinder and is connected with the pump shell, and the framework oil seal is further arranged between the lower flange and the pump shell.
In a specific embodiment, the jacking component comprises a pressure-bearing spring, a top column sleeve and a steel ball, wherein the pressure-bearing spring sequentially passes through the top column sleeve and the steel ball to jack the return disc against the variable head through a plunger piston shoe assembly passing through the return disc.
In a specific embodiment, the outer diameter of the small cylinder of the shaft cylinder is 40-60% of the outer diameter of the large cylinder.
In a specific embodiment, the radial inner side grooves at the through hole on the oil distribution ring are in a crescent shape, and the oil passage runs in the shaft cylinder in parallel with the axial direction; and a fit clearance of 0.06-0.08 mm is arranged between the small cylinder of the shaft cylinder and the inner diameter of the oil distribution ring.
In a specific embodiment, 3-9 plunger cylinder holes are arranged in the large cylinder body of the shaft cylinder, and the number of the plunger cylinder holes is odd.
In a specific embodiment, the oil distribution pump further comprises a copper sleeve arranged on the cylindrical inner wall of the plunger cylinder hole, and the copper sleeve is made of tin bronze or aluminum bronze.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model provides a variable radial oil distribution pump is a new pump of defect research and development design who exists among overcoming various oil pump prior art at home and abroad.
2. The oil distribution groove arranged on the small cylinder of the shaft cylinder and the through hole of the oil distribution ring slide in the radial direction to distribute oil, so that the defect of surface-to-surface friction caused by axial static pressure friction and rotary oil distribution in the prior art is overcome.
3. The utility model discloses a small circle cylinder external diameter of axle jar and the internal diameter of joining in marriage the oil ring are less, are equipped with 0.06 ~ 0.08 mm's fit clearance moreover, can produce the oil wedge effect in the rotatory oil of joining in marriage of slip, have avoided static pressure friction to join in marriage oil, have improved oil pump rotational speed, pressure and flow, have prolonged the life of oil pump.
4. The utility model discloses the produced axial load when the biserial angular contact ball bearing that sets up can bear oil pump discharge medium can bear the radial load when axle cylinder rotates again, can also guarantee the stability in the axle cylinder is rotatory.
5. The shaft and the cylinder are integrally arranged, so that an oil distribution disc, a spline shaft and an internal spline in a cylinder hole in the prior art are omitted, raw materials are saved, the process is simplified, and the production efficiency and the economic benefit are improved. The utility model discloses well rotatory cylinder that integration set up can play the effect of rotatory cylinder body and transmission shaft in earlier patent CN201510376816, still has the partial effect of the quiet valve shaft in earlier patent CN201510376816 concurrently.
6. In the specific implementation process, the inner hole for installing the cylindrical bearing, the inner hole for installing the double-row angular contact ball bearing and the inner hole for installing the oil distribution ring are formed by one-time coaxial processing, so that the coaxial precision of the bearing and the shaft cylinder rotating in a matched mode is high after the bearing is installed, the operation is stable, the rotating speed, the pressure and the flow of the oil pump can be improved, and the service life of the oil pump can be prolonged.
7. The utility model can be further optimized on the basis, for example, the upper part of the pump shell of the main body part of the utility model is replaced with a pressure compensation mechanism, thus the pump can become a pressure compensation variable oil pump; if the upper end of the main body part pump shell of the utility model is provided with the constant pressure variable mechanism, the pump can become a constant pressure variable oil pump.
8. The variable control unit of the present invention can use the variable control unit described in the prior patent CN201510376816, and can also use the variable control unit shown in fig. 1 of the present invention, so that excellent operation effect can be obtained.
9. The utility model discloses well axle jar integration sets up for the internal spline that sets up originally in the cylinder body and the corresponding cancellation of setting up at the epaxial external spline of transmission all no longer are subject to the restriction that cylinder body and transmission shaft axiality are not high, therefore are very favourable to the rotational speed that improves the oil distribution pump. The rotational speed of current plunger pump can only reach 1500r/min, and the rotational speed of joining in marriage the oil pump can reach 3000 ~ 5000 r/min.
10. The utility model discloses in be the fluid passageway e of axial trend and mainly set up on the small circle cylinder of axle jar, its compact structure has also contributed strength for improving the rotational speed of joining in marriage the oil pump. The preferred external diameter that sets up to 40 ~ 50mm of the small circle cylinder of axle jar, for example 45mm makes the axial of joining in marriage the oil pump is joined in marriage oily completion in the axle jar, is difficult to appear burning out the phenomenon of joining in marriage oil pump spare part.
11. The utility model discloses in double row angular contact ball bearing 6 and cylindrical bearing 18 all are used for connecting axle cylinder and pump case, but double row angular contact ball bearing 6 sets up in little cylinder end, and cylindrical bearing 18 sets up in big cylinder end, cylindrical bearing's internal diameter is 90 ~ 100mm for example, specifically is 96mm for example. In a specific embodiment, the cylindrical bearing is a cylindrical bearing without an inner ring, or a cylinder of the cylindrical bearing is fixedly connected or integrally arranged with the outer circular wall of the steel sleeve 17 or the large cylinder. The arrangement of the double-row angular contact ball bearing 6 and the cylindrical bearing 18 makes the utility model discloses in no longer need use the conical bearing that the atress was not stable enough in the footpath in the prior application. The structure of oil distribution pump is compacter, and the operation is more stable.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is a front sectional view of an embodiment of the present invention;
FIG. 2 is a left side sectional view of a portion of an embodiment of the present invention;
fig. 3 is a radial cross-sectional view of an oil distribution ring according to an embodiment of the present invention;
fig. 4 is an axial sectional view of an oil distribution ring according to an embodiment of the present invention;
fig. 5 is an axial cross-sectional view of an embodiment of the present invention;
fig. 6 is a radial cross-sectional view of a large cylinder of an axial cylinder according to an embodiment of the present invention;
wherein, 1, a shaft cylinder; 2. a lower flange; 3. framework oil seal; 4. a pump housing; 5. an oil distribution ring; 6. a double row angular contact ball bearing; 7. a plunger cylinder hole; 8. a copper sleeve; 9. a plunger shoe assembly; 10. an oil drainage port; 11. a pressure-bearing spring; 12. a top post sleeve; 13. a steel ball; 14. a return disk; 15. a variable head; 16. a ball-head rod; 17. steel jacket; 18. a cylindrical bearing; 19. a variable piston; 20. an adjusting screw assembly; 21. a variable body flange; 22. a limiting block; 23. a dial seat assembly; 24. a flange cover; 51. a positioning structure; a. an oil suction port; b. an oil discharge port; c. a through hole; d. an oil distribution groove; e. an oil passage.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
The utility model provides a pair of radial oil distribution pump of variable, radial oil distribution pump of variable is the axial plunger pump, and many plungers are along the axial setting or all be the angle setting that 0 is more than n and is less than or equal to 10 with the axial, radial oil distribution pump of variable includes that the rotatory cylinder 1 of external force drive keeps static pump case 4 and oil distribution ring 5, double-row angular contact ball bearing 6, plunger jar hole 7, set up in the plunger jar downthehole and rotatory plunger piston shoe subassembly 9 along with the axle jar of axle jar, set up at axle jar tip and rotatory return stroke dish 14, variable head 15, cylindrical bearing 18 and with the variable head is connected and is used for controlling thereby the variable control part of the inclination of the lower bottom surface of variable head control fluid output volume;
the shaft cylinder 1 comprises two cylinders which are integrally formed and coaxial and have different outer diameters, wherein the large cylinder is positioned at the far end of a power source for driving the shaft cylinder to rotate, and the small cylinder is positioned at the near end of the power source; an oil distribution ring 5, a double-row angular contact ball bearing 6 and a cylindrical bearing 18 which are arranged in the pump shell 4 are all arranged coaxially with the shaft cylinder 1, the oil distribution ring 5 and the double-row angular contact ball bearing 6 are sleeved on a small cylinder of the shaft cylinder 1, and the cylindrical bearing 18 is arranged on the radial outer side of a large cylinder; the oil distribution ring 5 is provided with two through holes c in the radial direction, the radial outer side ports of the two through holes c are respectively matched and communicated with an oil suction port a and an oil discharge port b which are arranged on a pump shell, the radial inner side ports of the through holes c are communicated with an oil liquid channel e arranged in a shaft cylinder, and a fit clearance of 0.02-0.10 mm is arranged between a small cylinder of the shaft cylinder 1 and the inner diameter of the oil distribution ring 5; a plurality of plunger cylinder holes 7 are arranged in the large cylinder of the shaft cylinder 1, a plunger piston shoe assembly 9 is arranged in each plunger cylinder hole 7, the piston shoe end of the plunger piston shoe assembly 9 is connected with a return disc 14 outside the plunger cylinder hole 7, and the plunger cylinder hole 7 is communicated with a through hole c of the oil distribution ring 5 through an oil distribution groove d arranged on the small cylinder of the shaft cylinder 1 through an oil channel e in the shaft cylinder 1; the oil distribution pump also comprises a top column sleeve hole positioned at the radial center of the large cylinder of the shaft cylinder and a jacking component used for jacking the rotary return disc 14 on the lower bottom surface of the variable head 15, wherein the jacking component comprises a pressure-bearing spring 11 arranged in the top column sleeve hole.
The utility model provides a variable radial oil distribution pump is a new pump of defect research and development design who exists among overcoming various oil pump prior art at home and abroad. The utility model provides a working pressure can be up to 45 ~ 68MPa, and is small, simple structure simultaneously, and the volume efficiency can be up to more than 96%, and international standard volume rate only is 93%.
The utility model discloses an oil is joined in marriage with the through-hole radial slip who joins in marriage the oil ring to the oil distribution groove that the small circle cylinder of axle jar set up, has overcome the rotatory friction defect who joins in marriage oil production face and face of axial hydrostatic pressure friction among the prior art. The utility model discloses a small circle cylinder external diameter of axle jar and the internal diameter of joining in marriage the oil ring is less, and preferred internal diameter is 45mm, is equipped with 0.06 ~ 0.08 mm's fit clearance moreover, can produce the oil wedge effect in the rotatory oil of joining in marriage of slip, has avoided static pressure friction to join in marriage oil, has improved oil pump rotational speed, pressure and flow, has prolonged the life of oil pump.
The utility model discloses the produced axial load when the biserial angular contact ball bearing that sets up can bear oil pump discharge medium can bear the radial load when axle cylinder rotates again, can also guarantee the stability in the axle cylinder is rotatory.
The utility model discloses a shaft jar integration sets up, has saved the internal spline in joining in marriage food tray, integral key shaft and the cylinder body hole among the prior art, has saved raw and other materials, has simplified technology, has improved production efficiency and economic benefits. In the specific implementation process, because the inner hole for installing the cylindrical bearing, the inner hole for installing the double-row angular contact ball bearing and the inner hole for installing the oil distribution ring are all formed by one-time coaxial processing, the coaxial precision of the bearing and the shaft cylinder which are matched and rotated after the bearing is installed is high, the operation is stable, the rotating speed, the pressure and the flow of the oil pump can be improved, and the service life of the oil pump can be prolonged.
In a specific embodiment, the variable control part comprises a ball head rod 16, a variable piston 19, an adjusting screw assembly 20, a variable body flange 21, a dial seat assembly 23 and a flange cover 24; the variable piston 19 is arranged at the end part of the pump shell 4, the axial direction of the variable piston 19 is vertical to the axial direction of the shaft cylinder 1, a ball head rod 16 is arranged between the variable head 15 and the variable piston 19, an adjusting screw rod assembly 20 is arranged at one axial end of the variable piston 19, and a dial plate seat assembly 23 is arranged at the outer side of the axial middle part of the variable piston 19; the variable piston 19 can move relatively by adjusting the adjusting screw assembly 20, and then the ball head rod 16 is driven to change the angle of the inclined plane of the variable head 15; the variable control part also comprises a variable body flange 21 which is sleeved on the adjusting screw assembly 20 and is connected with one end of the variable piston 19 and a flange cover 24 which is arranged at the other end of the variable piston 19. In the specific implementation of the variable radial oil distribution pump, if the variable piston 19 is driven by rotating the adjusting screw assembly 20 by hand to reduce the oblique angle of the variable head 15, the flow rate of the oil distribution pump is also reduced; otherwise, the flow of the oil distribution pump is increased.
In a specific embodiment, the variable control part further includes a limiting block 22 sleeved on the adjusting screw assembly 20, and the limiting block 22 is disposed between the variable body flange 21 and the variable piston 19 in the axial direction of the variable piston 19.
In a specific embodiment, the oil distribution ring 5 and the double row angular contact ball bearing 6 are arranged axially adjacent to each other, with the oil distribution ring 5 being located relatively at the proximal end of the power source and the double row angular contact ball bearing 6 being located relatively at the distal end of the power source.
In a specific implementation mode, the variable radial oil distribution pump further comprises a steel bushing 17 which is arranged in the pump shell, fixedly arranged on the radial periphery of the large cylinder of the shaft cylinder and used for increasing the rigidity and hardness of the shaft cylinder, the steel bushing rotates along with the rotation of the shaft cylinder, the material of the steel bushing is different from that of the shaft cylinder, and the cylindrical bearing 18 is sleeved on the periphery of the steel bushing 17. The steel sleeve 17 is preferably made of GCr15 bearing steel. The variable radial oil distribution pump further comprises a lower flange 2 and a framework oil seal 3, the lower flange 2 is sleeved on the radial outer side of the small cylinder end of the shaft cylinder 1 and is connected with a pump shell 4, and the framework oil seal 3 is further arranged between the lower flange 2 and the pump shell 4.
In a specific embodiment, the jacking component comprises a pressure-bearing spring 11, a jacking column sleeve 12 and a steel ball 13, the pressure-bearing spring sequentially passes through the jacking column sleeve 12 and the steel ball 13, and the return disc 14 is jacked on the variable head 15 through the plunger piston shoe assembly 9 which passes through the return disc 14. The steel ball 13 is preferably made of GCr15 bearing steel.
In a specific embodiment, the outer diameter of the small cylinder of the shaft cylinder is 20-80% of the outer diameter of the large cylinder, and preferably, the outer diameter of the small cylinder of the shaft cylinder is 40-60% of the outer diameter of the large cylinder.
In a specific embodiment, the radial inner side grooves at the through hole on the oil distribution ring 5 are in a crescent shape, and the direction of the oil passage e in the shaft cylinder is parallel to the axial direction; and a fit clearance of 0.06-0.08 mm is arranged between the small cylinder of the shaft cylinder 1 and the inner diameter of the oil distribution ring 5.
In a specific embodiment, the oil distribution ring 5 is further provided with a positioning structure 51 for confirming the installation position. The oil distribution ring 5 is required to have a high-precision mounting position and a displacement amount of less than 0.05 mm. Preferably, a positioning groove is provided on the circumferential cross center line of the oil distribution ring 5.
In a specific embodiment, 3-9 plunger cylinder holes 7 are arranged in the large cylinder body of the shaft cylinder 1, and the number of the plunger cylinder holes is odd. Preferably 7 ram cylinder bores 7 are used. Every time the shaft cylinder 1 rotates for one circle, each plunger piston shoe assembly 9 on the shaft cylinder 1 finishes one-time oil absorption and one-time oil discharge, and if the shaft cylinder 1 rotates ceaselessly, the oil distribution pump ceaselessly absorbs oil and discharges oil to meet the working requirement of hydraulic transmission equipment.
In a specific embodiment, the oil distribution pump further comprises a copper sleeve 8 arranged on the cylindrical inner wall of the plunger cylinder hole 7, and the copper sleeve 8 is made of tin bronze or aluminum bronze.
In the rotation of the shaft cylinder 1, the plunger in the plunger piston shoe assembly 9 is pushed into the plunger cylinder hole by the variable head 15, and is pulled up by the return stroke disk 14, and the driving plunger continuously reciprocates in the plunger cylinder hole to change the volume of the airtight space in the plunger cylinder hole and form the oil absorption and the oil discharge of the oil distribution pump.
In a specific embodiment, the oil distribution groove d provided on the small cylinder of the shaft cylinder 1 is a kidney-shaped oil distribution groove.
In a specific embodiment, the pump housing 4 is provided with a drain port 10. The utility model discloses a cylindrical bearing 18 and double row angular contact ball bearing 6 communicate with each other with the leakage oil in pump case 4 to two pairs of bearings can both obtain the abundant lubrication of fluid in the rotation of axle cylinder 1. The oil leaked from the oil drain port 10 returns to the oil tank, for example, at 1000r/min of the oil distribution pump, 40L of oil is sucked from the oil suction port a, when the hydraulic pressure rises to 45-68 MPa, about 38-39L of oil is discharged from the oil discharge port b, and the rest of oil flows from the oil drain port 10 back to the oil tank.
The utility model discloses in, the material of axle cylinder generally adopts ordinary steel, and its quenching hardness generally is 48 ~ 52HRc, and steel bushing 17's material adopts high-quality steel, and its quenching hardness generally is 60 ~ 63HRc, for example GCr15 bearing steel. The utility model discloses in, set up the copper sheathing that wear resistance is better on the inside wall in plunger jar hole 7, make the life-span of joining in marriage the oil pump is higher. The shaft cylinder can be made of copper completely, but the price of copper is more than thirty thousand yuan per ton and is obviously higher than that of twenty thousand yuan per ton of common steel, so the cost of the pump can be obviously saved by matching the shaft cylinder made of the common steel with the copper sleeve.
The utility model discloses in, under the drive of power supply, the rotation of axle cylinder and drive plunger piston shoes subassembly 9 and return stroke dish 14 rotatory, under the restraint of the lower bottom surface of variable head 15, every rotatory a week of plunger all experiences one and inhales oil and one oil extraction process. Oil enters the oil distribution ring 5 from an oil suction port a on the pump shell, passes through a through hole c of the oil distribution ring 5, an oil distribution groove d on the shaft cylinder and an oil passage e, and enters a plunger cylinder hole 7 on the shaft cylinder; meanwhile, the oil in the other plunger cylinder hole 7 enters the oil discharge port b on the pump shell through the oil channel e and the oil distribution groove d on the shaft cylinder and the through hole c of the oil distribution ring 5. The one plunger cylinder hole is a plunger cylinder hole rotated to the oil suction port side, and the other plunger cylinder hole is a plunger cylinder hole rotated to the oil discharge port side.
The utility model discloses in, the tight part in top including pressure-bearing spring 11, top post cover 12 and steel ball 13 is used for pushing up return stroke dish 14 tightly on variable head 15. When the shaft cylinder rotates, the variable head 15 is fixed, and the return disc 14 keeps rotating, so that in the process of corresponding rotation of the plunger piston shoe assembly 9, the plunger piston shoe assembly 9 moves up and down due to the inclination angle of the variable head 15, and the process of oil absorption and oil discharge once when the plunger piston shoe assembly 9 rotates for one circle is achieved. The steel ball 13 may be replaced by other materials having a harder texture and higher strength than the general steel.
The utility model discloses in, the manufacturing of pump case can be after integration shaping pump case idiosome, will be used for installing shaft cylinder head and cylindrical bearing 18 hole section car earlier, will be used for installing biserial angular contact ball bearing 6 again and be used for installing the hole section car of joining in marriage oil ring 5, at last to be used for installing the hole section car of shaft cylinder afterbody. During the assembly process of the oil distribution pump, the oil distribution ring 5 is firstly installed in a pump shell, then the double-row angular contact ball bearing 6 is installed in the pump shell, then the cylindrical bearing 18 is installed in the pump shell, then the shaft cylinder is installed in the pump shell, and the sealing and fixing are carried out.
The utility model can be further optimized on the basis, for example, the upper part of the pump shell of the main body part of the utility model is replaced with a pressure compensation mechanism, thus the pump can become a pressure compensation variable oil pump; if the upper end of the main body part pump shell of the utility model is provided with the constant pressure variable mechanism, the pump can become a constant pressure variable oil pump.
The foregoing is a more detailed description of the invention, taken in conjunction with the specific preferred embodiments, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions and replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (10)

1. The variable radial oil distribution pump is characterized by being an axial plunger pump, a plurality of plungers are axially arranged or are arranged in an angle of inclining 0 degrees to 10 degrees, wherein the plungers are driven by external force to rotate, a pump shell (4) and an oil distribution ring (5) which are kept static, a double-row angular contact ball bearing (6), a plunger cylinder hole (7), a plunger piston shoe assembly (9) which is arranged in the plunger cylinder hole of the shaft cylinder and rotates along with the shaft cylinder, a return disc (14) which is arranged at the end part of the shaft cylinder and rotates along with the shaft cylinder, a variable head (15), a cylindrical bearing (18) and a variable control component which is connected with the variable head and is used for controlling the inclination angle of the lower bottom surface of the variable head so as to control the output quantity;
the shaft cylinder (1) comprises two cylinders which are integrally formed and coaxial and have different outer diameters, wherein the large cylinder is positioned at the far end of a power source for driving the shaft cylinder to rotate, and the small cylinder is positioned at the near end of the power source; an oil distribution ring (5), a double-row angular contact ball bearing (6) and a cylindrical bearing (18) which are arranged in the pump shell (4) are coaxially arranged with the shaft cylinder (1), the oil distribution ring (5) and the double-row angular contact ball bearing (6) are sleeved on a small cylinder of the shaft cylinder (1), and the cylindrical bearing (18) is arranged on the radial outer side of a large cylinder; the oil distribution ring (5) is provided with two through holes (c) in the radial direction, the radial outer side ports of the two through holes (c) are respectively matched and communicated with an oil suction port (a) and an oil discharge port (b) which are arranged on a pump shell, the radial inner side ports of the through holes (c) are communicated with an oil liquid channel (e) which is arranged in a shaft cylinder, and a fit clearance of 0.02-0.10 mm is arranged between the small cylinder of the shaft cylinder (1) and the inner diameter of the oil distribution ring (5); a plurality of plunger cylinder holes (7) are formed in a large cylinder of the shaft cylinder (1), a plunger piston shoe assembly (9) is arranged in each plunger cylinder hole (7), the piston shoe end of the plunger piston shoe assembly (9) is connected with a return disc (14) outside the plunger cylinder hole (7), and the plunger cylinder hole (7) is communicated with a through hole (c) of the oil distribution ring (5) through an oil liquid channel (e) in the shaft cylinder (1) through an oil distribution groove (d) formed in a small cylinder of the shaft cylinder (1); the oil distribution pump also comprises a top column sleeve hole positioned at the radial center of the large cylinder of the shaft cylinder and a jacking component used for jacking a rotary return disc (14) on the lower bottom surface of the variable head (15), wherein the jacking component comprises a pressure-bearing spring (11) arranged in the top column sleeve hole.
2. The variable radial fuel pump according to claim 1, wherein the variable control means includes a ball head rod (16), a variable piston (19), an adjusting screw assembly (20), a variable body flange (21), a dial seat assembly (23), and a flange cover (24); the variable piston (19) is arranged at the end part of the pump shell (4), the axial direction of the variable piston (19) is vertical to the axial direction of the shaft cylinder (1), a ball head rod (16) is arranged between the variable head (15) and the variable piston (19), an adjusting screw rod assembly (20) is arranged at one axial end of the variable piston (19), and a dial seat assembly (23) is arranged outside the axial middle part of the variable piston (19); the variable piston (19) can move relatively by adjusting the adjusting screw rod assembly (20), and then the ball head rod (16) is driven to change the angle of the inclined plane of the variable head (15); the variable control part also comprises a variable body flange (21) which is sleeved on the adjusting screw rod assembly (20) and is connected with one end of the variable piston (19) and a flange cover (24) which is arranged at the other end of the variable piston (19).
3. The variable radial oil distribution pump according to claim 2, wherein the variable control part further comprises a limiting block (22) sleeved on the adjusting screw assembly (20), and the limiting block (22) is arranged between the variable body flange (21) and the variable piston (19) in the axial direction of the variable piston (19).
4. The variable radial oil distribution pump according to claim 1, wherein the oil distribution ring (5) and the double row angular contact ball bearing (6) are disposed adjacent to each other in the axial direction, and the oil distribution ring (5) is located relatively at a proximal end of the power source, and the double row angular contact ball bearing (6) is located relatively at a distal end of the power source.
5. The variable radial oil distribution pump according to claim 1, further comprising a steel bushing (17) which is arranged in the pump housing and fixedly arranged on the radial periphery of the large cylinder of the shaft cylinder and used for increasing the rigidity and hardness of the shaft cylinder, wherein the steel bushing rotates along with the rotation of the shaft cylinder, the material of the steel bushing is different from that of the shaft cylinder, and the cylindrical bearing (18) is sleeved on the periphery of the steel bushing (17); the variable radial oil distribution pump further comprises a lower flange (2) and a framework oil seal (3), the lower flange (2) is sleeved on the radial outer side of the small cylinder end of the shaft cylinder (1) and is connected with the pump shell (4), and the framework oil seal (3) is further arranged between the lower flange (2) and the pump shell (4).
6. The variable radial oil distribution pump according to claim 1, wherein the tightening member comprises a pressure-bearing spring (11), a top column sleeve (12) and a steel ball (13), the pressure-bearing spring sequentially passes through the top column sleeve (12) and the steel ball (13) to press the return disc (14) against the variable head (15) through the plunger shoe assembly (9) passing through the return disc (14).
7. The variable radial fuel distribution pump according to claim 1, wherein the outer diameter of the small cylinder of the shaft cylinder is 40 to 60% of the outer diameter of the large cylinder.
8. The variable radial oil distribution pump according to claim 1, characterized in that the radial inner grooves at the through hole on the oil distribution ring (5) are crescent-shaped, and the oil passage (e) runs in the shaft cylinder in parallel with the axial direction; and a fit clearance of 0.06-0.08 mm is arranged between the small cylinder of the shaft cylinder (1) and the inner diameter of the oil distribution ring (5).
9. The variable radial oil distribution pump according to claim 1, characterized in that 3-9 plunger cylinder holes (7) are arranged in the large cylinder body of the shaft cylinder (1), and the number of the plunger cylinder holes is odd.
10. The variable radial fuel distribution pump according to claim 1, characterized in that the fuel distribution pump further comprises a copper bush (8) disposed at the cylindrical inner wall of the plunger cylinder bore (7), and the copper bush (8) is made of tin bronze or aluminum bronze.
CN201921394353.9U 2019-08-26 2019-08-26 Variable radial oil distribution pump Active CN210290028U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921394353.9U CN210290028U (en) 2019-08-26 2019-08-26 Variable radial oil distribution pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921394353.9U CN210290028U (en) 2019-08-26 2019-08-26 Variable radial oil distribution pump

Publications (1)

Publication Number Publication Date
CN210290028U true CN210290028U (en) 2020-04-10

Family

ID=70063187

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921394353.9U Active CN210290028U (en) 2019-08-26 2019-08-26 Variable radial oil distribution pump

Country Status (1)

Country Link
CN (1) CN210290028U (en)

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