CN101368552A - Heeling moment full-balancing shaft distribution mechanism and bidirectional variable radial ball piston pump - Google Patents

Heeling moment full-balancing shaft distribution mechanism and bidirectional variable radial ball piston pump Download PDF

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Publication number
CN101368552A
CN101368552A CNA2008102227368A CN200810222736A CN101368552A CN 101368552 A CN101368552 A CN 101368552A CN A2008102227368 A CNA2008102227368 A CN A2008102227368A CN 200810222736 A CN200810222736 A CN 200810222736A CN 101368552 A CN101368552 A CN 101368552A
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China
Prior art keywords
oil
pintle
pressure
cylinder
flow
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Application number
CNA2008102227368A
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Chinese (zh)
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CN101368552B (en
Inventor
苑士华
张心俊
胡纪滨
荆崇波
魏超
邹云飞
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Beijing Institute of Technology BIT
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Beijing Institute of Technology BIT
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Publication of CN101368552A publication Critical patent/CN101368552A/en
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Publication of CN101368552B publication Critical patent/CN101368552B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention provides a heeling moment full-equilibrium shaft flow distribution mechanism and a bidirectional variable radial ball piston pump. The high pressure oil discharge hole is communicated with the low pressure side balance oil groove, and the low pressure oil suction hole is communicated with the high pressure side balance oil groove respectively through the oil channel and the thin-wall damping hole in the flow distribution shaft; under the damping effect of the thin-wall damping hole, the flow distribution pair is adjusted to be in the balanced state, so as to maintain the constant flow distribution gap. The axial hydraulic pressure applied on the flow distribution shaft is balanced through the oil grooves arranged on the right end surface of the end cover corresponding to the high pressure oil hole and the low pressure oil hole so that the flow distribution shaft is not influenced by the effect of the heeling moment. The plunger is replaced by the ball piston so that the radial size of the bidirectional variable radial ball piston pump is smaller; the structure is compact. The high rotational speed and large discharge capacity are realized; the variable mechanism is simple and has high reliability.

Description

The axle flow-distribution mechanism and the bidirectional variable radial ball piston pump of the full balance of moment in roll
Technical field:
The invention belongs to the hydraulic machinery technical field, is the axle flow-distribution mechanism of the full balance of a kind of moment in roll and the bidirectional variable radial ball piston pump that adopts this mechanism, and it is applicable to high temperature, high pressure, high speed and big discharge capacity working environment.
Background technique:
In the prior art, axle flow radial plunger pump is because pintle and the processing of cylinder body and the wearing and tearing that assembly error can cause the flow pair constantly increase the flow gap, and leakage is on the rise, and has greatly influenced the volumetric efficiency of radial plunger pump; If flow gap design too small though can improve the volumetric efficiency of pump, greatly reduced the mechanical efficiency of pump, even can cause the generation of the secondary seize phenomenon of flow, cause the pump can't proper functioning.And the pintle of existing axle flow radial plunger pump bearing very big hydraulic coupling and moment in roll, makes pintle and cylinder surface generation eccentric wear, thereby shortened the working life of radial plunger pump.Because plunger is longer, makes that the radial dimension of radial plunger pump is bigger, the piston shoes pair is comparatively responsive to linear velocity simultaneously, has limited the raising of radial plunger revolution speed.
Summary of the invention:
Purpose of the present invention is just in order to realize radially and the circumferentially stressed equal balance of pintle, thereby pintle is not subjected to the effect of moment in roll and the axle flow-distribution mechanism of the full balance of a kind of moment in roll that designs, and goes out bidirectional variable radial ball piston pump according to this mechanism design.Pintle is in quick condition, and the hydraulic coupling of pump inside and moment all act on the bearing by cylinder body.The working principle of the full trunnion shaft flow-distribution mechanism of moment in roll of the present invention's design is: the low pressure oil-sucking hole is linked up mutually with high pressure side balance oil groove with the thin-walled damping hole by the high pressure side ditch oil canal in the pintle, the high pressure oil drainage hole is linked up mutually with low voltage side balance oil groove with the thin-walled damping hole by other low voltage side ditch oil canal, utilize the damping function of thin-walled damping hole, when increasing in the flow gap, high, the oil pressure of low voltage side balance oil groove reduces, when the flow gap reduces, high, the oil pressure of low voltage side balance oil groove increases, either way can make the flow pair adjust to state of equilibrium, keep constant flow gap.By offer in the end cap right side corresponding to pintle high low pressure oilhole and oil groove, with the suffered axial hydraulic power of equilibrium assignment axle, so pintle is not subjected to the effect of moment in roll.And the axial hydraulic power left that acts on the end cap passes on the housing by mandrel, locking nut and flow interface.Guarantee the length of the length of mandrel step greater than pintle in the design, so that keep certain clearance between end cap and pintle, thereby pintle is in quick condition.Simultaneously two straight pins are installed between pintle and flow interface, to prevent the circumferential rotation of pintle.
Beneficial effect:
Adopt the present invention can automatically the flow pair be adjusted to state of equilibrium, keep constant flow gap by balance oil groove on the pintle and the thin-walled damping hole in the ditch oil canal.Replace the plunger in the radial plunger pump with bulb stopper simultaneously, made the radial dimension of bidirectional variable radial ball piston pump reduce compact structure.Owing to replaced piston shoes pair relatively more responsive in the plunger pump with the rolling friction pair of bulb stopper and effect ring, so can realize high working speed to linear velocity.Can improve pump delivery by arranging many vollyballs plug, thereby realize big discharge capacity easily under the constant situation of radial dimension keeping.Can realize the variation of discharge capacity easily by the throw of eccentric between change effect ring and the cylinder body, stroking mechanism is simple and reliable.Owing to cancelled the piston shoes pair, reduced the number and the friction pair of vital part, thereby had higher reliability.
Description of drawings:
Fig. 1 is the internal structure schematic representation of bidirectional variable radial ball piston pump of the present invention.
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Fig. 3 is the B-B cross-sectional view of Fig. 1.
Among the figure: 1-protecgulum, 2-left bearing lid, 3-deep groove ball bearing, the 4-end cap, 5-mandrel, 6-locking nut, the 7-input shaft, 8-cylinder body, 9-pin, the 10-straight pin, 11-pump case, 12-right bearing lid, the 13-roller bearing, 14-high pressure side balance oil groove, 14 '-low voltage side balance oil groove, the 15-pintle, 16-flow interface, 17-straight pin, 18-flow cover, 19-swing axis, 20-left axle sleeve, the 21-right axle sleeve, 22-handwheel, 23-screw rod, 24-round nut, 25-act on ring outward, effect ring in the 26-, the 27-bulb stopper, 28-high pressure oil drainage hole, 28 '-low pressure oil-sucking hole, 29-high pressure side thin-walled damping hole, 29 '-low voltage side thin-walled damping hole, 30-high pressure side ditch oil canal, 30 '-low voltage side ditch oil canal.
The present invention comprises protecgulum (1) according to the bidirectional variable radial ball piston pump of the full trunnion shaft flow-distribution mechanism design of this moment in roll; Pump Housing (11); The straight pin (10) that is used for protecgulum (1) and pump case (11) location; Be used for supporting cylinder body (8) and place the interior zanjon of protecgulum (1) Cylinder roller bearing (13) in ball bearing (3) and the pump case (11); Handwheel (22), screw rod (23) and circle spiral shell as the pump stroking mechanism Female (24); Snap into the outer effect ring (25) of round nut (24) and the interior effect ring (26) that is placed in one; Place outer effect ring (25) Interior swinging axle (19); Left axle sleeve (20) and the right axle sleeve (21) on the swinging axle (19) of placing that is used for outer effect ring (25) axial location; The pin (9) that is used for swinging axle (19) axial location in pump case (11); Be positioned at the pintle (15) at place, cylinder body (8) axle center; Be positioned at flow The flow interface (16) of axle (15) right side; Be positioned at the left bearing lid (2) of deep groove ball bearing (3) left end; Be positioned at cylinder roller bearing (13) The right bearing lid (12) of right-hand member; Place the bulb stopper (27) in the cylinder body (8); Be used for driving the power shaft (7) of cylinder body (8); Place pintle (15) and flow interface (16) in straight pin (17); Be placed in the flow cover (18) in the cylinder body (8); Be positioned at pintle (15) axle center place Mandrel (5), end cap (4) and locking nut (6). In the above-mentioned parts, power shaft (7) and cylinder body (8) are coaxial, outer effect ring (25) top with Round nut (24) contacts, and axially has two high pressure outages (28) and two low pressure oil-sucking holes along it in the pintle (15) (28 '), the high and low pressure side of pintle (15) has two Semicircular high-pressure side balance oil grooves (14) and low-pressure side balance oil groove (14 '), have simultaneously two high-pressure side ditch oil canals that are used for linking up low pressure oil-sucking hole (28 ') and high-pressure side balance oil groove (14) (30) and be used for to link up the low-pressure side ditch oil canal (30 ') of high pressure outage (28) and low-pressure side balance oil groove (14 '), link up in the high-pressure side Be separately installed with thin-walled damping hole (29) and (29 ') in oil duct (30) and the low-pressure side ditch oil canal (30 '). It is characterized in that with bulb stopper (27) Replaced plunger.
The bidirectional variate radial piston pump that consists of thus, the radial hydraulic pressure that its pintle (15) is suffered and axial liquid pressure all are flat Weighing apparatus, thereby be not subjected to the moment in roll effect, and pintle (15) is in quick condition, prolonged bidirectional variable radial ball piston pump Service life. This pump configuration is simply compact, and the dismounting difficulty is low, is convenient to maintenance and repair.
Embodiment:
Consult Fig. 1, Fig. 2, input shaft (7) drives cylinder body (8) and rotates, and bulb stopper is when rotating with cylinder body, and is reciprocating along the cylinder bore axis, working chamber volume between bulb stopper (27), cylinder bore and the flow-distribution mechanism is changed, finish the process of oil suction and oil extraction.Bulb stopper (27) contacts with the internal surface of interior effect ring (26), and outer effect ring (25) is subjected to the control of handwheel (22), and can make inside and outside effect ring is that the center swing realizes bidirectional variable with swing axis (19).Stroking mechanism mainly is made up of swing axis (19), handwheel (22), screw rod (23) and round nut (24).Flow interface (16) is fixed on the pump case (11), by two straight pins (17) pintle (15) is not rotated with cylinder body (8).
Consult Fig. 2, Fig. 3, the section of pintle (15) has four through holes, wherein (28) are two high pressure oil drainage holes, (28 ') is two low pressure oil-sucking holes, high pressure side ditch oil canal (30) is linked up low pressure oil-sucking hole (28 ') and high pressure side balance oil groove (14), low voltage side ditch oil canal (30 ') is linked up high pressure oil drainage hole (28) and low voltage side balance oil groove (14 '), at oil duct (30), thin-walled damping hole (29) and (29 ') were set respectively in (30 ').Utilize the damping function of thin-walled damping hole, when increasing in the flow gap, the oil pressure of high and low pressure lateral balance oil groove reduces, when the flow gap reduces, the oil pressure of high and low pressure lateral balance oil groove increases, and either way can make the flow pair adjust to state of equilibrium, keeps constant flow gap.By offer the oil groove corresponding to pintle high low pressure oilhole in end cap (4) right side, with the suffered axial hydraulic power of equilibrium assignment axle (15), so pintle (15) is not subjected to the effect of moment in roll.Guarantee the length of the length of mandrel (5) step greater than pintle (15) in the design, so that keep certain clearance between end cap (4) and pintle (15), thereby pintle (15) is in quick condition.Avoided the eccentric wear of pintle (15), the working life of having improved pump with flow cover (18).

Claims (4)

1. axle flow-distribution mechanism and the bidirectional variable radial ball piston pump of the full balance of moment in roll, mainly comprise protecgulum (1), pump case (11), cylinder body (8), end cap (4), it is characterized in that: protecgulum (1) and pump case (11) are by straight pin (10) location, cylinder body (8) is loaded in protecgulum (1) and the pump case (11) by deep groove ball bearing (3) and roller bearing (13), pintle (15) is equipped with at place, cylinder body (8) axle center, mandrel (5) is equipped with at place, pintle (15) axle center, flow interface (16) is equipped with in pintle (15) right side, and bulb stopper (27) is housed in the cylinder body (8); Input shaft (7) is connected with cylinder body (8).
2. the axle flow-distribution mechanism and the bidirectional variable radial ball piston pump of the full balance of moment in roll according to claim 1, it is characterized in that: axially have two high pressure oil drainage holes (28) and two low pressure oil-sucking holes (28 ') along it in the pintle (15), the height of pintle (15), low voltage side has two Semicircular high pressure side balance oil grooves (14) and low voltage side balance oil groove (14 '), have two low voltage side ditch oil canals (30 ') that are used to link up the high pressure side ditch oil canal (30) of low pressure oil-sucking hole (28 ') and high pressure side balance oil groove (14) and are used to link up high pressure oil drainage hole (28) and low voltage side balance oil groove (14 ') simultaneously, in high pressure side ditch oil canal (30) and low voltage side ditch oil canal (30 '), be separately installed with thin-walled damping hole (29) and (29 ').
3. full trunnion shaft flow-distribution mechanism of moment in roll according to claim 1 and bidirectional variable radial ball piston pump, it is characterized in that: the handwheel (22) that the pump stroking mechanism is housed on pump case (11), screw rod (23) and round nut (24), snap into the outer effect ring (25) of round nut (24) and the interior effect ring (26) that is placed in one, place the swing axis (19) in the outer effect ring (25), left axle sleeve (20) and the right axle sleeve (21) on the swing axis (19) of placing that is used for outer effect ring (25) axially locating, the pin (9) that is used for swing axis (19) axially locating in pump case (11), be positioned at the left bearing lid (2) of deep groove ball bearing (3) left end, be positioned at the right bearing lid (12) of roller bearing (13) right-hand member, between pintle (15) and flow interface (16) straight pin (17) be housed; Flow cover (18) is installed in the cylinder body (8); End cap (4) and locking nut (6) are equipped with in place, pintle (15) axle center.
4. according to claim 1 and full trunnion shaft flow-distribution mechanism of 2 described moments in roll and bidirectional variable radial ball piston pump, it is characterized in that: in the above-mentioned parts, input shaft (7) and cylinder body (8) are coaxial, outer effect ring (25) top contacts with round nut (24), and the length of mandrel (5) step is greater than the length of pintle (15).
CN2008102227368A 2008-09-23 2008-09-23 Heeling moment full-balancing shaft distribution mechanism and bidirectional variable radial ball piston pump Expired - Fee Related CN101368552B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2008102227368A CN101368552B (en) 2008-09-23 2008-09-23 Heeling moment full-balancing shaft distribution mechanism and bidirectional variable radial ball piston pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2008102227368A CN101368552B (en) 2008-09-23 2008-09-23 Heeling moment full-balancing shaft distribution mechanism and bidirectional variable radial ball piston pump

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CN101368552B CN101368552B (en) 2010-12-22

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216406A (en) * 2013-04-09 2013-07-24 西安交通大学 Pump and motor all-in-one bulb stopper hydraulic pump capable of distributing oil by oil distribution disc
CN104948409A (en) * 2015-07-01 2015-09-30 张坚 Quantified and axial plunger pump
CN104948444A (en) * 2015-06-25 2015-09-30 北京理工大学 Shaft flow distribution supporting structure suitable for radial hydraulic pump/motor and shaft flow distribution radial hydraulic pump/motor
CN104948408A (en) * 2015-07-01 2015-09-30 张意 Variable axial plunger pump
CN106014901A (en) * 2016-06-21 2016-10-12 西安交通大学 Pressure compensation type end face oil distribution double-row radial plunger variable pump with annular piston

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103216406A (en) * 2013-04-09 2013-07-24 西安交通大学 Pump and motor all-in-one bulb stopper hydraulic pump capable of distributing oil by oil distribution disc
CN103216406B (en) * 2013-04-09 2015-11-25 西安交通大学 A kind of bulb stopper oil hydraulic pump adopting oil distribution casing to join the pump motor integration of oil
CN104948444A (en) * 2015-06-25 2015-09-30 北京理工大学 Shaft flow distribution supporting structure suitable for radial hydraulic pump/motor and shaft flow distribution radial hydraulic pump/motor
CN104948409A (en) * 2015-07-01 2015-09-30 张坚 Quantified and axial plunger pump
CN104948408A (en) * 2015-07-01 2015-09-30 张意 Variable axial plunger pump
CN104948408B (en) * 2015-07-01 2017-06-30 张意 A kind of axial variable displacement plunger pump
CN106014901A (en) * 2016-06-21 2016-10-12 西安交通大学 Pressure compensation type end face oil distribution double-row radial plunger variable pump with annular piston
CN106014901B (en) * 2016-06-21 2018-01-16 西安交通大学 A kind of pressure-compensated end face oil distributing biserial radial piston variable displacement pump of annular piston

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