CN204591659U - A kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump - Google Patents

A kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump Download PDF

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Publication number
CN204591659U
CN204591659U CN201520205194.9U CN201520205194U CN204591659U CN 204591659 U CN204591659 U CN 204591659U CN 201520205194 U CN201520205194 U CN 201520205194U CN 204591659 U CN204591659 U CN 204591659U
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CN
China
Prior art keywords
plunger
stator
rotor
radial
swing frame
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Expired - Fee Related
Application number
CN201520205194.9U
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Chinese (zh)
Inventor
范淑琴
赵升吨
杨雪松
李靖祥
李省
曹苗
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Xian Jiaotong University
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Xian Jiaotong University
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Priority to CN201520205194.9U priority Critical patent/CN204591659U/en
Application granted granted Critical
Publication of CN204591659U publication Critical patent/CN204591659U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump, comprise the stators and rotators of axle flow distribution radial plunger pump, the offset of stator and rotor is adjustable, rotor is contained on pintle, circumferencial direction along rotor has uniform plunger hole, plunger is configured in plunger hole, rolling structure is adopted to be connected between plunger with stator, stator and swing frame are connected, swing frame crossbeam is connected with swing frame, stator, swing frame outside is provided with radial plunger pump casing, in the course of the work, without piston shoes mechanism between plunger and stator, it is rolling friction between plunger and stator, frictional force is much smaller than sliding friction, in addition without the need to the high pressure oil in plunger cavity is extracted lubrication, and then decrease the leakage of high pressure oil, realize energy-conservation.

Description

A kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump
Technical field
The utility model belongs to radial plunger hydraulic pump technical field, particularly a kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump.
Background technique
In hydraulic system, the function of oil hydraulic pump is the pressure energy mechanical energy of motor or internal combustion engine prime movers being converted to liquid, provides pressure oil and drives executive component work, belong to Hydraulic power units to system.
Its structural type of radial plunger pump has multiple, but its common trait is each plunger is arranged on the radial direction of transmission shaft, that is the center line of each plunger is all perpendicular to the center line of transmission shaft.Have stators and rotators in radial plunger pump, both arranged off-centre, rotor is contained on pintle, and the circumferencial direction along rotor has multiple uniform plunger hole, and plunger can flexible motion wherein.When transmission shaft rotor driven rotates, plunger is reciprocating in rotor plunger hole, realizes the change of sealed volume.Rotor often circles, and each piston reciprocation once, completes an oil suction and oil extraction process.Hydraulic oil through pintle inner passage, enters plunger cavity when rotor forwards lower half to by pump housing inlet port, after rotor forwards upper half boosting to, discharges from the zone of high pressure of the pintle first half through oil drain out, supply actuator.The plunger of such pump mainly adopts piston shoes mechanism to be connected with the cooperation of stator at present, piston shoes have pressure balance face and oil groove, thus there is the problem of high pressure oil leakage, cause energy dissipation, in addition owing to being that face contacts between piston shoes with stator, be sliding friction in movement process, frictional force is larger, piston shoes serious wear, also there will be the stuck situation causing piston shoes crushed sometimes.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide a kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump, decreases the leakage of high pressure oil, realizes energy-conservation.
In order to achieve the above object, the technical solution of the utility model is as follows:
A kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump, comprise stator 5 and the rotor 2 of axle flow distribution radial plunger pump, stator 5 is adjustable with the offset of rotor 2, rotor 2 is contained on pintle 1, circumferencial direction along rotor 2 has uniform plunger hole 3, plunger 4 is configured in plunger hole 3, rolling structure is adopted to be connected between plunger 4 with stator 5, stator 5 and swing frame 6 are connected, swing frame crossbeam 7 is connected with swing frame 6, and stator 5, swing frame 6 outside are provided with radial plunger pump casing 8.
Described plunger 4 top has groove 4-1, and steel ball 4-2 place mat is in groove 4-1, and cylinder 4-3 is pressed on steel ball 4-2, and cylinder 4-3 another side withstands on the internal surface of stator 5, and cover plate 4-4 is connected with plunger 4, is stuck in groove 4-1 by cylinder 4-3.
Described plunger 4 top has groove 4-1, and steel ball 4-2 place mat is in groove 4-1, and ball 4-6 is pressed on steel ball 4-2, and ball 4-6 another side withstands in the inner surface recesses of stator 5, and cover plate 4-4 is connected with plunger 4, is stuck in groove 4-1 by ball 4-6.
Advantage of the present utility model: in the course of the work, without piston shoes mechanism between plunger and stator, be rolling friction between plunger and stator, frictional force is much smaller than sliding friction; In addition without the need to the high pressure oil in plunger cavity is extracted lubrication, and then decrease the leakage of high pressure oil, realize energy-conservation.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2-1 is the erection drawing of a kind of mode of plunger 4 of the present utility model; Fig. 2-2 is three-view diagrams of plunger 4, and wherein (a) is the sectional view of plan view centrally symmetry plane, and (b) is left view, and (c) is plan view.
Fig. 3-1 is the erection drawing of the another kind of mode of the utility model plunger 4; Fig. 3-2 is three-view diagrams of plunger 4, and wherein (a) is the sectional view of plan view centrally symmetry plane, and (b) is left view, and (c) is plan view.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
With reference to Fig. 1, a kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump, comprise stator 5 and the rotor 2 of axle flow distribution radial plunger pump, stator 5 is adjustable with the offset of rotor 2, rotor 2 is contained on pintle 1, circumferencial direction along rotor 2 has 11 uniform plunger holes 3, plunger 4 is configured in plunger hole 3, rolling structure is adopted to be connected between plunger 4 with stator 5, stator 5 and swing frame 6 are connected, swing frame crossbeam 7 is connected with swing frame 6, and stator 5, swing frame 6 outside are provided with radial plunger pump casing 8.
With reference to Fig. 2-1 and Fig. 2-2, described plunger 4 top has groove 4-1, steel ball 4-2 place mat is in groove 4-1, cylinder 4-3 is pressed on steel ball 4-2, thus make to be rolling friction between cylinder 4-3 and plunger 4, cylinder 4-3 another side withstands on the internal surface of stator 5, when plunger 4 rotates with rotor, cylinder 4-3 rolls at the internal surface of stator 5, friction type is rolling friction, cover plate 4-4 is connected with plunger 4 by screw 4-5, is stuck in groove 4-1 by cylinder 4-3, prevents from coming off in cylinder 4-3 movement process.
With reference to Fig. 3-1 and Fig. 3-2, described plunger 4 top has groove 4-1, steel ball 4-2 place mat is in groove 4-1, ball 4-6 is pressed on steel ball 4-2, thus make to be rolling friction between ball 4-6 and plunger 4, ball 4-6 another side withstands in the inner surface recesses of stator 5, when plunger 4 rotates with rotor, ball 4-6 rolls in the inner surface recesses of stator 5, friction type is rolling friction, cover plate 4-4 is connected with plunger 4 by screw 4-5, is stuck in groove 4-1 by ball 4-6, prevents ball 4-6 from coming off in movement process.
Working principle of the present utility model is:
When hydraulic pump works, plunger 4 is reciprocating in the plunger hole 3 of rotor 2, realize the change of sealed volume, and plunger 4 is followed rotor 2 and moved in a circle, rotor 2 often circles, each plunger 4 makes a round trip, complete an oil suction and oil extraction process, hydraulic oil is entered when rotor 2 forwards lower half in plunger hole 3 through pintle 1 inner passage by pump housing inlet port, after rotor 2 forwards upper half boosting to, discharge from the zone of high pressure of pintle 11 first half through oil drain out, supply actuator.
In the groove 4-1 at plunger 4 top, cylinder 4-3 or ball 4-6 is installed in groove 4-1, at cylinder 4-3 or be covered with one deck steel ball 4-2 between ball 4-6 and plunger 4, thus make cylinder 4-3, the friction of relative generation between ball 4-6 with plunger 4 is rolling friction, frictional force is very little.The another side of cylinder 4-3, ball 4-6 withstands on the internal surface of stator 5, when plunger 4 rotates with rotor 2, cylinder 4-3, ball 4-6 roll at the internal surface of stator 5, and friction type is rolling friction, frictional force much smaller than sliding friction, thus reaches the effect reducing friction.

Claims (3)

1. one kind is applicable to the plunger head rolling structure without piston shoes of radial plunger hydraulic pump, comprise stator (5) and the rotor (2) of axle flow distribution radial plunger pump, it is characterized in that: stator (5) is adjustable with the offset of rotor (2), rotor (2) is contained on pintle (1), circumferencial direction along rotor (2) has uniform plunger hole (3), plunger (4) is configured in plunger hole (3), rolling structure is adopted to be connected between plunger (4) with stator (5), stator (5) and swing frame (6) are connected, swing frame crossbeam (7) is connected with swing frame (6), stator (5), swing frame (6) outside is provided with radial plunger pump casing (8).
2. a kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump according to claim 1, it is characterized in that: described plunger (4) top has groove (4-1), steel ball (4-2) place mat is in groove (4-1), cylinder (4-3) is pressed on steel ball (4-2), cylinder (4-3) another side withstands on the internal surface of stator (5), cover plate (4-4) is connected with plunger (4), is stuck in groove (4-1) by cylinder (4-3).
3. a kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump according to claim 1, it is characterized in that: described plunger (4) top has groove (4-1), steel ball (4-2) place mat is in groove (4-1), ball (4-6) is pressed on steel ball (4-2), ball (4-6) another side withstands in the inner surface recesses of stator (5), cover plate (4-4) is connected with plunger (4), is stuck in groove (4-1) by ball (4-6).
CN201520205194.9U 2015-04-07 2015-04-07 A kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump Expired - Fee Related CN204591659U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520205194.9U CN204591659U (en) 2015-04-07 2015-04-07 A kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520205194.9U CN204591659U (en) 2015-04-07 2015-04-07 A kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump

Publications (1)

Publication Number Publication Date
CN204591659U true CN204591659U (en) 2015-08-26

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Application Number Title Priority Date Filing Date
CN201520205194.9U Expired - Fee Related CN204591659U (en) 2015-04-07 2015-04-07 A kind of plunger head rolling structure without piston shoes being applicable to radial plunger hydraulic pump

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108213306A (en) * 2016-12-15 2018-06-29 李富申 What a kind of swager used is servo-actuated low friction tup

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108213306A (en) * 2016-12-15 2018-06-29 李富申 What a kind of swager used is servo-actuated low friction tup

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150826

Termination date: 20170407

CF01 Termination of patent right due to non-payment of annual fee