CN114017318A - Rolling type self-adjusting balancer and high-pressure internal gear pump comprising same - Google Patents
Rolling type self-adjusting balancer and high-pressure internal gear pump comprising same Download PDFInfo
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- CN114017318A CN114017318A CN202111365861.6A CN202111365861A CN114017318A CN 114017318 A CN114017318 A CN 114017318A CN 202111365861 A CN202111365861 A CN 202111365861A CN 114017318 A CN114017318 A CN 114017318A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 40
- 238000009826 distribution Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 description 15
- 238000005299 abrasion Methods 0.000 description 12
- 230000009471 action Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
- F04C15/0049—Equalization of pressure pulses
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/50—Bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
A rolling type self-adjusting balancer and a high-pressure internal gear pump comprising the same comprise at least one group of balancers arranged in a pump body of the high-pressure internal gear pump, wherein each balancer comprises a needle bearing fixing seat, two axial ends of each needle bearing fixing seat are respectively provided with a needle bearing mounting hole, a needle bearing is arranged in each needle bearing mounting hole, a needle bearing mandrel is matched in each needle bearing, a supporting block is radially abutted against the needle bearing fixing seats, and the tail end of each supporting block is abutted against an adjusting bolt; the needle bearing fixing seat is in rolling contact with the outer surface of a driven gear of the high-pressure internal gear pump. The gear pump has the advantages of effectively improving the efficiency of the gear pump and ensuring the stable operation of the gear pump.
Description
Technical Field
The application relates to the technical field of high-pressure internal gear pumps, in particular to a rolling type self-adjusting balancer applied to the high-pressure internal gear pump; the rolling type self-adjusting balancer has the advantages of small leakage, balanced operation, high volume efficiency, low noise and small abrasion when in high-pressure operation; the rolling type self-adjusting balancer and the high-pressure internal gear pump with the rolling type self-adjusting balancer can effectively improve the efficiency of the gear pump and ensure the stable operation of the gear pump.
Background
The gear pump is formed by driving a driven gear, two gear combined teeth, a left oil distribution plate and a right oil distribution plate through a driving gear and sealing a large crescent and a small crescent. The driving gear drives the driven gear, two teeth are meshed to reduce the volume from large volume, the four surfaces are in gapless contact, a high-pressure sealed working cavity is generated and contained, the purposes of high-pressure oil discharge and vacuum low-pressure oil absorption are realized by increasing the pressure in the sealed volume of the working cavity, therefore, the gear combination precision of the two gears and the position degree of the gear during operation to generate pressure are the main key points of the pump body operation, and the requirement on the position degree of the gear operation run-out degree is high; the surface of the driving gear is sealed with the driven gear without clearance, so that the larger the deviation number of the position of the driven gear, the more serious the leakage is, the friction coefficient is in direct proportion to the temperature rise and the noise in the cavity, the larger the continuous increasing pressure friction coefficient is, the generated abrasion is a key factor influencing the service life of the gear pump, and the high temperature and high pressure generated in the cavity of the pump body can extrude towards the surface of the driven gear, so that the deviation operation run-out degree position accuracy of the driven gear is changed; therefore, how to reduce the running abrasion of the driven gear and control the position degree, thereby realizing the purposes of improving the volume efficiency, saving energy and prolonging the service life of the gear pump, improving the running run-out degree position degree precision of the driven gear, and ensuring the stability and no deviation of the driven gear during running.
However, driven gears of the existing high-pressure internal gear pump generally adopt throw type sliding operation, and have no positioning or accurate guiding; this results in high pressure generated by the gear-meshing speed gap of the two gears, large deviation error of the driven gear and serious leakage; the gear pump also can cause abrasion caused by high-pressure friction in sliding operation due to deviation of the driven gear, influences the quality and the service life of gear pump products, and brings great loss to production factories and users.
Disclosure of Invention
The rolling type self-adjusting balancer can prevent leakage, reduce abrasion, accurately position and accurately position at high precision, and solves the problems of poor position, low volume efficiency, high friction coefficient, serious leakage and the like of the gear pump in the conventional like products.
In order to solve the technical problem, the technical scheme adopted by the application is as follows: a rolling type self-adjusting balancer comprises at least one group of balancers arranged in a pump body of a high-pressure internal gear pump, each balancer comprises a needle bearing fixing seat, two axial ends of each needle bearing fixing seat are provided with needle bearing mounting holes, needle bearings are arranged in the needle bearing mounting holes, needle bearing mandrels are matched in the needle bearings, supporting blocks are radially abutted against the needle bearing fixing seats, and adjusting bolts are abutted against the tail ends of the supporting blocks; the needle bearing fixing seat is in rolling contact with the outer surface of a driven gear of the high-pressure internal gear pump.
By adopting the structure, the balancer is arranged in the pump body of the high-pressure internal gear pump, so that the driven gear can be in light-pressure contact in real time, the outer diameter of the driven gear is automatically in light-pressure contact in place, the end face of the driven gear is in place under the action of the balancer, and the effect of automatically centering the outer diameter circumference of the driven gear is achieved; the balancer acts on the driven gear, so that the working operation of the balancer is stable, the leakage is small, the abrasion is small, the noise is small, the position precision is high, the volume efficiency is high, and the service life is long.
Preferably, the at least one group of balancers is three groups, and the three groups of balancers are respectively distributed along the periphery of the driven gear; by adopting the structure, the position degree is centered and controlled by the rolling type self-adjusting balancer with the fixed triangular points, and the three groups of the rolling type self-adjusting balancers with the fixed triangular points simultaneously contact the outer diameter of the running driven gear and roll the self-centering position along with the running action; the structure solves the problems that the position degree is difficult to stabilize and poor in accuracy of the position degree when the driven gear runs at high pressure, the driven gear deviates and leaks when the pressure of an inner cavity rises in running, the high-pressure sliding friction coefficient is directly proportional to the generated abrasion speed, the noise is high and the like.
Furthermore, the angular distribution of the three groups of balancers between two adjacent groups along the circumferential direction of the driven gear is 129 degrees, 102 degrees and 129 degrees; by adopting the distribution, a more ideal positioning effect of the driven gear can be realized; and the three groups of balancer triangular structures formed by 129 degrees and 102 degrees are selected by comprehensively considering the positions of the hydraulic low-pressure oil suction port and the high-pressure oil outlet of the pump body and the distribution effect of the bearing capacity of high-pressure liquid oil, so that the operation of the high-pressure pump is not influenced, and the real-time positioning of the driven gear can be better realized.
Furthermore, the three groups of balancers are respectively a first group of balancers, a second group of balancers and a third group of balancers; a first group of balancers are arranged on the left side of the oil inlet on the pump body of the high-pressure internal gear pump, and a second group of balancers and a third group of balancers are arranged on the right side of the oil inlet; the angle between the first group of balancers and the second group of balancers and the angle between the first group of balancers and the third group of balancers are 129 degrees respectively, and the angle between the second group of balancers and the third group of balancers is 102 degrees; by adopting the structure, more accurate positioning and angle fixing of the driven wheel can be realized.
Preferably, the needle bearing fixing seat is crescent-shaped, and the radian of the inner side surface of the crescent-shaped needle bearing fixing seat is matched with the radian of the outer contour of the driven gear; specifically, the radian of the inner side face of the crescent needle bearing fixing seat is identical to the radian of the outer contour of the driven gear, so that the crescent needle bearing fixing seat and the driven gear are more convenient to attach, and better contact and light pressure effects between the crescent needle bearing fixing seat and the driven gear are achieved.
Preferably, the needle bearing mounting holes at the two axial ends of the needle bearing fixing seat are concentrically arranged; by adopting the structure, the upper and lower linkage of the two surfaces of the needle bearing fixing seat in the axial direction can be realized, and the needle bearing fixing seat is in accurate light press fit with the driven gear.
Preferably, a notch is arranged at the inner side position of the needle bearing fixing seat, and the needle bearing part protrudes out of the notch; by adopting the structure, the rolling contact between the needle bearing and the outer diameter surface of the driven gear can be realized.
Furthermore, the width of the notch is 3.5-3.7mm, and the needle roller bearing protrudes out of the notch by 0.1-0.3 mm; adopt this structure, can realize that bearing and driven gear external diameter face are better rolls the pressure and contacts, neither can lead to the two pressfitting too inseparable, can also realize the accurate positioning to driven gear under the effect of oil pressure, prevent that its transition from wearing and tearing and leading to the serious problem of dislocation to appear.
Furthermore, the upper end surface of the needle bearing is slightly recessed in the needle bearing fixing seat by 0-0.04 mm; by adopting the structure, the fixing seat can be installed in a smaller space, and the needle bearing can be prevented from causing the clamping connection between the fixing seat and the pump body.
Preferably, the height of the crescent needle bearing fixing seat is not more than the distance between every two adjacent rows of oil suction holes in the axial direction of the driven gear; by adopting the structure, the better supporting and positioning effects on the driven gear can be realized, and the oil absorption and oil discharge functions of the driven gear are not influenced.
The application also provides a high-pressure internal gear pump comprising the rolling type self-adjusting balancer; the high-pressure internal gear pump of the rolling type self-regulating balancer with the structure can achieve the technical effects of preventing leakage, reducing abrasion and achieving accurate and high-precision position accuracy.
Drawings
Fig. 1 is a schematic view showing a structure of a gear pump including the rolling type self-adjusting balancer of the present application.
Fig. 2 is a schematic structural view of the needle bearing fixing seat (with a needle bearing arranged therein) according to the present application.
Fig. 3 is a schematic structural diagram of a needle bearing fixing seat (without a needle bearing) according to the present application.
Fig. 4 is a schematic structural view of a needle bearing fixing seat shaft side view of the present application.
Fig. 5 is a schematic structural diagram of a single-piece assembly of the rolling type self-adjusting balancer of the present application.
Fig. 6 is a structural schematic diagram of a combination diagram of the rolling type self-adjusting balancer and the pump body.
Fig. 7 is a schematic structural view of a middle pump body of the high-pressure internal gear pump.
Fig. 8 is a schematic structural view in a sectional view taken along line a-a of fig. 7.
Fig. 9 is a schematic structural view in a sectional view taken along line C-C of fig. 8.
FIG. 10 is a schematic view of the structure of the C-shaped end of the mounting aid block.
FIG. 11 is a schematic diagram of the structure of an isometric view of the installation aid block.
As shown in the attached drawings: 1. the pump body, 1.1 the oil inlet, 2 the balancer, 2.1 the first group of balancer, 2.2 the second group of balancer, 2.3 the third group of balancer, 3 the bearing fixing base, 3.1 the bearing mounting hole, 3.2 the mounting hole, 3.3 the breach, 4 the bearing, 5 the bearing dabber, 6 the supporting shoe, 7 the adjusting bolt (adjusting screw), 8 the driven gear.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only preferred embodiments, not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present invention;
further, it is to be noted that: when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by way of the intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 5-7, the rolling type self-adjusting balancer of the present application includes at least one group of balancers 2 disposed in a pump body 1 of a high-pressure internal gear pump, where the balancer 2 includes a needle bearing fixing seat 3, both axial ends of the needle bearing fixing seat 3 are provided with a needle bearing mounting hole 3.1, a needle bearing 4 is disposed in the needle bearing mounting hole 3.1, a needle bearing mandrel 5 is fitted in the needle bearing 4, a supporting block 6 is radially abutted to the needle bearing fixing seat 3, and a regulating bolt 7 is abutted to a tail end of the supporting block 6; the needle bearing fixing seat 3 is in rolling contact with the outer surface (the outer peripheral surface or the outer diameter surface) of a driven gear 8 of the high-pressure internal gear pump; as a preferred embodiment, the position of the supporting block abutting against the needle bearing fixing seat is preferably the axial middle position of the fixing seat, so that the driven gear is supported more uniformly.
By adopting the structure, the balancer is arranged in the pump body of the high-pressure internal gear pump, so that the driven gear can be in light-pressure contact in real time, the outer diameter of the driven gear is automatically in light-pressure contact in place, the end face of the driven gear is in place under the action of the balancer, and the effect of automatically centering the outer diameter circumference of the driven gear is achieved; the balancer acts on the driven gear, so that the working operation of the balancer is stable, the leakage is small, the abrasion is small, the noise is small, the position precision is high, the volume efficiency is high, and the service life is long.
Specifically, as shown in fig. 1 and 6-7, the at least one set of balancers is three sets, and the three sets of balancers are respectively distributed along the periphery of the driven gear 8; by adopting the structure, the position degree is centered and controlled by the rolling type self-adjusting balancer with the fixed triangular points, and the three groups of the rolling type self-adjusting balancers with the fixed triangular points simultaneously contact the outer diameter of the running driven gear and roll the self-centering position along with the running action; the structure solves the problems that the position degree is difficult to stabilize and poor in accuracy of the position degree when the driven gear runs at high pressure, the driven gear deviates and leaks when the pressure of an inner cavity rises in running, the high-pressure sliding friction coefficient is directly proportional to the generated abrasion speed, the noise is high and the like.
Specifically, as shown in fig. 1, the angular distribution of the three groups of balancers described in the present application between two adjacent groups in the circumferential direction of the driven gear is 129 degrees, 102 degrees, and 129 degrees; the angle between two groups of balancers adjacent to each other is determined by taking the axis of a corresponding mounting hole (arranged on the body of the high-pressure internal gear pump and provided with threads for screwing and fixing the position of an adjusting bolt) for mounting the adjusting bolt 7 in the three groups of balancers as a standard; by adopting the distribution, a more ideal positioning effect of the driven gear can be realized; and the three groups of balancer triangular structures formed by 129 degrees and 102 degrees are selected by comprehensively considering the positions of the hydraulic low-pressure oil suction port and the high-pressure oil outlet of the pump body and the distribution effect of the bearing capacity of high-pressure liquid oil, so that the operation of the high-pressure pump is not influenced, and the real-time positioning of the driven gear can be better realized.
Specifically, as shown in fig. 1 and 6-7, the three groups of balancers described in the present application are a first group of balancers 2.1, a second group of balancers 2.2, and a third group of balancers 2.3; a first group of balancers 2.1 are arranged on the left side of an oil inlet 1.1 on a pump body 1 of the high-pressure internal gear pump, and a second group of balancers 2.2 and a third group of balancers 2.3 are arranged on the right side of the oil inlet 1.1; the angle between the first group of balancers 2.1 and the second group of balancers 2.2 and the third group of balancers 2.3 is 129 degrees, and the angle between the second group of balancers 2.2 and the third group of balancers 2.3 is 102 degrees; by adopting the structure, more accurate positioning and angle fixing of the driven wheel can be realized.
Specifically, as shown in fig. 1-3 and 5-7, the needle bearing fixing seat 3 is crescent-shaped, and the radian of the inner side surface of the crescent-shaped needle bearing fixing seat 3 is matched with the radian of the outer contour of the driven gear 8; specifically, the radian of the inner side face of the crescent needle bearing fixing seat is identical to the radian of the outer contour of the driven gear, so that the crescent needle bearing fixing seat and the driven gear are more convenient to attach, and better contact and light pressure effects between the crescent needle bearing fixing seat and the driven gear are achieved.
Specifically, needle bearing mounting holes 3.1 at two axial ends of the needle bearing fixing seat 3 are concentrically arranged; namely, the upper and lower needle bearing mounting holes in the axial direction are completely aligned and concentric up and down, and the hole diameters are also equal; by adopting the structure, the upper and lower linkage of the two surfaces of the needle bearing fixing seat in the axial direction can be realized, and the needle bearing fixing seat is matched with the driven gear in a precise light pressing way.
Specifically, as shown in fig. 1-3 and 5-7, a notch 3.3 is provided near an inner side of the needle bearing fixing seat 3 (i.e., a notch is provided on an inner side surface of the needle bearing fixing seat near the driven gear, and an axial length of the notch is consistent with a length of a roller bearing mounting hole on the needle bearing fixing seat), and the needle bearing portion protrudes out of the notch; by adopting the structure, the rolling contact between the needle bearing and the outer diameter surface of the driven gear can be realized.
As a preferred embodiment, the width of the notch is 3.5-3.7mm (referring to the width of the surface of the fixing seat in the radial direction), and the needle bearing protrudes from the notch by 0.1-0.3mm (referring to the protrusion length of the needle bearing protruding from the notch in the axial direction of the fixing seat); more specifically, the width of the notch can be 3.6mm, and the needle bearing protrudes out of the notch by 0.2 mm; adopt this structure, can realize that bearing and driven gear external diameter face are better rolls the pressure and contacts, neither can lead to the two pressfitting too inseparable, can also realize the accurate positioning to driven gear under the effect of oil pressure, prevent that its transition from wearing and tearing and leading to the serious problem of dislocation to appear.
Furthermore, the upper end surface of the needle bearing is slightly recessed in the needle bearing fixing seat by 0-0.04 mm; by adopting the structure, the fixing seat can be installed in a smaller space, and the needle bearing can be prevented from causing the clamping connection between the fixing seat and the pump body.
Furthermore, the height of the crescent needle bearing fixing seat is not more than the distance between every two adjacent rows of oil suction holes in the axial direction of the driven gear; by adopting the structure, better supporting and positioning effects on the driven gear can be realized, and the oil suction and oil discharge functions of the driven gear are not influenced; because set up a lot of oilholes on driven gear's the lateral wall for oil absorption and oil extraction, if the setting of fixing base causes the use that the jam then can influence whole gear pump to the oilhole, consequently make above-mentioned setting, and the initial position of pump body inside groove will prevent to block up the oilhole after the balancer installation.
The application also provides a high-pressure internal gear pump comprising the rolling type self-adjusting balancer; the high-pressure internal gear pump of the rolling type self-regulating balancer with the structure can achieve the technical effects of preventing leakage, reducing abrasion and achieving accurate and high-precision position accuracy.
The high-pressure internal gear pump has F position A (2) (slot in pump body) for assembling self-regulating balancer, slot in crescent needle bearing fixing seat, mounting support block and radial through hole for regulating bolt (as shown in figure 8), as shown in figure 8-9, and has screw hole for mounting regulating bolt, needle bearing fixing seat with axial needle bearing and mandrel, radial support block and bearing block, and inside the inner groove of the pump body Interference to prevent the needle bearing from separating from the fixed seat).
The application relates to a rolling type self-adjusting balancer installation process: during assembly, the assembly assisting block with the structure shown in the attached figures 10-11 is adopted, one end of the assembly assisting block is of a C-shaped disc structure (provided with a base, a handle is arranged on the lower bottom surface of the base), the other end of the assembly assisting block is provided with a handle for holding), the gap is aligned with the position of the inner groove of the pump body (the balancer installation position arranged on the pump body shown in the attached figure 9) of the balancer to be assembled, the balancer is assembled at one position (the supporting block and the balancer are assembled at the same time, the supporting block extends out of the gap of the C-shaped assembly assisting block and firstly enters the inner groove of the pump body), then the other two balancers are assembled after rotating at required angles of 129 degrees or 102 degrees and the like, then the adjusting screws are correspondingly assembled to abut against the supporting block (the adjusting screws are assembled in radial holes on the installation positions), so that the supporting block slightly compresses the needle bearing fixing seat, after three groups of self-adjusting balancers are assembled, the driven gear can rotate to be a positioning standard by slightly exerting force, then under the action of rotating force, the crescent bevel angle of the balancer is in unilateral contact with the outer diameter surface of the driven gear and is in direct proportion to the liquid pressure to play the role of automatic balancing of the position of the circular triangular point.
The supporting block plays a role in vertically compressing the fixed seat (compressing in the radial direction) when the adjusting screw is screwed and compressed, and does not influence the balance bearing force of the balancer on the driven gear; the adjusting screw plays a role in adjusting when the hydraulic pump is used for a long time and the gaps between the meshed gears are large (the adjusting screw adjusts the gaps through the depth deeper than the pump body), but the adjusting screw needs to be sealed with glue after being fixed at a good position, so that oil in the pump body is prevented from leaking; this application has realized effectively supporting and the adjustment balance effect to driven gear under the common effort of the internal oil pressure of balancer and whole pump of three position, and the effectual off normal that prevents takes place for it.
The outer side face of the needle bearing fixing seat is in contact with the supporting block in a mutual abutting mode; the supporting shoe is located between adjusting screw and the fixing base.
The rolling type self-adjusting balancer acts on the driven gear to ensure that the rolling type self-adjusting balancer works stably, is small in leakage, small in abrasion, small in noise, high in position accuracy (the position accuracy of the driven gear in operation), high in volume efficiency and long in service life. The pressure is convenient, the position precision is improved by 2 levels compared with the prior driven gear, and the volume efficiency is improved by more than six percent.
Claims (10)
1. A rolling self-adjusting balancer, characterized in that: the balancer comprises a needle bearing fixing seat, needle bearing mounting holes are formed in two axial ends of the needle bearing fixing seat, needle bearings are arranged in the needle bearing mounting holes, needle bearing mandrels are matched in the needle bearings, supporting blocks are radially abutted against the needle bearing fixing seat, and adjusting bolts are abutted against the tail ends of the supporting blocks; the needle bearing fixing seat is in rolling contact with the outer surface of a driven gear of the high-pressure internal gear pump.
2. The rolling self-adjusting balancer of claim 1, wherein: the at least one group of balancers are three groups, and the three groups of balancers are distributed along the periphery of the driven gear respectively.
3. The rolling self-adjusting balancer of claim 2, wherein: the angular distribution between two adjacent groups of the three groups of balancers along the circumferential direction of the driven gear is 129 degrees, 102 degrees and 129 degrees.
4. The rolling self-adjusting balancer of claim 3, wherein: the three groups of balancers are respectively a first group of balancers, a second group of balancers and a third group of balancers; a first group of balancers are arranged on the left side of the oil inlet on the pump body of the high-pressure internal gear pump, and a second group of balancers and a third group of balancers are arranged on the right side of the oil inlet; the angle between the first group of balancers and the second group of balancers and the angle between the first group of balancers and the third group of balancers are 129 degrees, and the angle between the second group of balancers and the third group of balancers is 102 degrees.
5. The rolling self-adjusting balancer of claim 1, wherein: the needle bearing fixing seat is crescent-shaped, and the radian of the inner side surface of the crescent-shaped needle bearing fixing seat is matched with the radian of the outer contour of the driven gear.
6. The rolling self-adjusting balancer of claim 1, wherein: the needle bearing mounting holes at the two axial ends of the needle bearing fixing seat are concentrically arranged.
7. The rolling self-adjusting balancer of claim 6, wherein: a notch is formed in the position, close to the inner side, of the needle bearing fixing seat, and the needle bearing portion protrudes out of the notch.
8. The rolling self-adjusting balancer of claim 7, wherein: the width of the notch is 3.5-3.7mm, and the needle roller bearing protrudes out of the notch by 0.1-0.3 mm; the upper end surface of the needle bearing is slightly recessed in the needle bearing fixing seat by 0-0.04 mm.
9. The rolling self-adjusting balancer of claim 1, wherein: the height of the crescent needle bearing fixing seat is not larger than the distance between every two adjacent rows of oil suction holes in the axial direction of the driven gear.
10. A high-pressure internal gear pump is characterized in that: the gear comprises a rolling type self-adjusting balancer as claimed in claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111365861.6A CN114017318A (en) | 2021-11-18 | 2021-11-18 | Rolling type self-adjusting balancer and high-pressure internal gear pump comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111365861.6A CN114017318A (en) | 2021-11-18 | 2021-11-18 | Rolling type self-adjusting balancer and high-pressure internal gear pump comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114017318A true CN114017318A (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111365861.6A Pending CN114017318A (en) | 2021-11-18 | 2021-11-18 | Rolling type self-adjusting balancer and high-pressure internal gear pump comprising same |
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| CN (1) | CN114017318A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH487342A (en) * | 1967-09-01 | 1970-03-15 | Eckerle Otto | Wear-compensating high-pressure gear pump |
| CN1164887A (en) * | 1995-09-01 | 1997-11-12 | 奥托·埃克勒 | Internal gear pump without filling piece |
| CN205342513U (en) * | 2015-11-27 | 2016-06-29 | 重庆明高机械制造有限公司 | Cylinder processing frock |
| KR20170001931U (en) * | 2015-11-24 | 2017-06-01 | 훌루테크 주식회사 | internal gear pump |
| CN107725357A (en) * | 2017-12-07 | 2018-02-23 | 江西应用技术职业学院 | A kind of crescent gear pump suitable for Water hydraulics |
| CN212536058U (en) * | 2020-05-15 | 2021-02-12 | 无锡市东液机械制造有限公司 | Low-noise internal gear pump |
| CN212717143U (en) * | 2020-07-24 | 2021-03-16 | 淮安市君宝液压机械有限公司 | Linear conjugated internal gear pump |
| CN113236554A (en) * | 2021-06-04 | 2021-08-10 | 中国人民解放军海军工程大学 | Involute tooth profile internal gear pump capable of rotating in two directions |
-
2021
- 2021-11-18 CN CN202111365861.6A patent/CN114017318A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH487342A (en) * | 1967-09-01 | 1970-03-15 | Eckerle Otto | Wear-compensating high-pressure gear pump |
| CN1164887A (en) * | 1995-09-01 | 1997-11-12 | 奥托·埃克勒 | Internal gear pump without filling piece |
| KR20170001931U (en) * | 2015-11-24 | 2017-06-01 | 훌루테크 주식회사 | internal gear pump |
| CN205342513U (en) * | 2015-11-27 | 2016-06-29 | 重庆明高机械制造有限公司 | Cylinder processing frock |
| CN107725357A (en) * | 2017-12-07 | 2018-02-23 | 江西应用技术职业学院 | A kind of crescent gear pump suitable for Water hydraulics |
| CN212536058U (en) * | 2020-05-15 | 2021-02-12 | 无锡市东液机械制造有限公司 | Low-noise internal gear pump |
| CN212717143U (en) * | 2020-07-24 | 2021-03-16 | 淮安市君宝液压机械有限公司 | Linear conjugated internal gear pump |
| CN113236554A (en) * | 2021-06-04 | 2021-08-10 | 中国人民解放军海军工程大学 | Involute tooth profile internal gear pump capable of rotating in two directions |
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