CN105181205A - High-pressure high-speed axial piston pump piston pair four-axis force testing device - Google Patents
High-pressure high-speed axial piston pump piston pair four-axis force testing device Download PDFInfo
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- CN105181205A CN105181205A CN201510570352.5A CN201510570352A CN105181205A CN 105181205 A CN105181205 A CN 105181205A CN 201510570352 A CN201510570352 A CN 201510570352A CN 105181205 A CN105181205 A CN 105181205A
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Abstract
The invention discloses a high-pressure high-speed axial piston pump piston pair four-axis force testing device which is mainly composed of a swash plate shaft, a bearing assembly, a tested piston pair, an auxiliary piston pair, a four-axis force sensor, an oil lead piston, a piston base, a piston shoe press plate, a preloaded piston, a compression spring, a spring seat and the like. The ingenious lubrication structure of the ball head and hinge joint of the preloaded piston with adjustable pretension and the bearing assembly, the swash plate shaft in a dynamic balance balancing structure, the tested piston pair, the auxiliary piston pair, the oil lead piston and the four-axis force sensor with a center through hole structure are designed. The tested piston pair and the auxiliary piston pair are symmetrically arranged. The ball head structure of different sizes on both ends and the ball hinge pair of the oil lead piston are connected. Interference factors on the tested piston pair are eliminated. Three-dimensional direction action force and axial torque of a high-pressure high-speed piston pair are measured. The device has the advantages of simple and reliable overall structure, easy part replacing and low machining and detection cost.
Description
Technical field
The present invention relates to technical field of hydraulic elements, particularly relate to a kind of high-voltage high-speed axial plunger pump plunger pair four axial force test device.
Background technology
Axial plunger pump is one of of paramount importance dynamical element of Fluid Transmission and Control ambit, extensive application is obtained in all trades and professions, along with the development of industrial technology, each application proposes the active demand in more high workload rotating speed, more high workload pressure, wider efficient district to axial plunger pump.It is secondary that plunger pair is that axial plunger pump realizes the friction core of suction functional oil, and the friction, lubrication performance of plunger pair, load-carrying properties have decisive influence to the high speed of axial plunger pump, high-pressure trend, high-level efficiency performance.The friction, lubrication performance of plunger pair is mainly reflected in friction force that plunger axial direction (z-axis direction) produces due to to-and-fro movement, circumferencial direction and spins the circumferential friction torque produced due to plunger that swash plate/piston shoes relative motion causes, and its load-carrying properties are mainly reflected in huge lateral forces plunger lateral (x-axis direction and y-axis direction) needing support.Mainly contain following several to the test unit that plunger vice division chief acting force is tested at present:
1, based on the proving installation that toggle drives.In such test unit, plunger cavity is fixed in frame, the to-and-fro movement realized in plunger cavity by toggle actuation plunger, thus the dynamic behavior of approximate simulation pump inner plunger pair.Aachen, Germany polytechnical university developed so a kind of test unit.Due to this test unit do not consider swash plate/piston shoes this on the impact of friction pair, therefore larger gap is still had with the secondary dynamic behavior of pump inner plunger true under actual condition, the maximum (top) speed that this device can allow and top pressure also far below the ratings of pump, and only can test the friction force of plunger axial direction.
2, based on the proving installation of model pump thought.Zhejiang University developed this type of test unit a kind of.This experimental provision is measured pump inner plunger friction force when substantially not changing axial plunger pump configuration, is in close proximity to real working condition.But the shortcoming of such test unit is complex structure, it is extremely difficult to assemble, plunger pair is poor by test specimen convertibility, and be very easy to line is damaged, signal simultaneously for realizing recording is transferred in fixed equipment by the cylinder body of High Rotation Speed and goes, wireless telemetry technique must be adopted, therefore cause test unit overall cost expensive, the maximum (top) speed that this test unit can allow and pressure are the ratings of pump.
3, based on the proving installation that wobbler drives.Such test unit, based on swash plate/piston shoes relative motion thought, by the swash plate actuation plunger of rotary motion, realizes the to-and-fro movement of plunger in plunger cavity, approaches the dynamic behavior of true pump inner plunger pair.Aachen, Germany polytechnical university, Purdue Univ-West Lafayette USA, Tokyo polytechnical university and domestic Harbin Institute of Technology all designed this type of test unit based on this thought, wherein the test unit of RWTH and Tokyo Institute of Technology's exploitation only can test the friction force of plunger countershaft to direction, although the test unit of Purdue University's exploitation is by adopting wireless telemetry technique, plunger pair x can be realized, the Force measurement in y and z-axis three directions, but involve great expense, cost is high, this kind of test unit of Harbin Institute of Technology's exploitation, SMD strain-ga(u)ge transducer is arranged on plunger pair contact position to measure stress situation, friction force and the x in plunger pair z-axis direction is obtained again by computational analysis, the side force in y-axis direction, indirectly measurement obtains, which is also easily subject to the interference of bearing installing force.The maximum speed that these test units existing can allow and pressure are all lower than the ratings of pump.
Towards axial plunger pump to high-pressure trend, the active demand of high speed, high-level efficiency performance future development, need the plunger pair tester for testing of a kind of high rotating speed of exploitation, high pressure badly, this device needs to complete the measurement of plunger pair at the moment of torsion in the axial acting force of x, y, z and z-axis direction, the measurement to oil liquid pressure in working speed and plunger cavity can be completed, and plunger pair measured piece will have easy replaceability, to support the plunger pair structural research work of high lubricating property and high-mechanic performance.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, a kind of high-voltage high-speed axial plunger pump plunger pair four axial force test device is provided, this device allows working speed and authorized pressure much larger than the general rated speed of current industrial pump and rated pressure, can complete the measurement of plunger pair at the moment of torsion in the axial acting force of x, y, z and z-axis direction simultaneously, and the measurement of working speed and plunger cavity inner fluid pressure, and parts have easy replaceability.
In order to achieve the above object, the technical solution adopted in the present invention is as follows: a kind of high-voltage high-speed axial plunger pump plunger pair four axial force test device, and it comprises: running part, support section, tested plunger pair part, kicker ram secondary part, case top lid, pressure transducer, four-way connection, housing, level switch, temperature sensor, air cleaner, draining stop valve, pumping plant, data collecting card and industrial computer; Wherein, running part is arranged on housing; Tested plunger pair part is connected with the first logical position of four-way connection, and the secondary part of kicker ram is connected with the second logical position of four-way connection; Pressure transducer is connected with the threeway position of four-way connection; The four-way position of four-way connection is connected with pumping plant; Mounting temperature sensor, level switch and air cleaner in case top lid, case top lid is fixedly connected with housing; Draining stop valve is installed in the bottom of housing, and draining stop valve is connected with housing cavity; Pressure transducer is all connected with data collecting card with temperature sensor, and data collecting card is connected with industrial computer; The output signal line of level switch is connected with the input signal cable of draining stop valve;
Described running part comprises: oil motor, motor base, shaft coupling, wobbler shaft, bearing (ball) cover, single-row angular contact ball bearing, double-row angular contact bal bearing, large bearing holder (housing, cover), little bearing holder (housing, cover); Wherein, described oil motor is arranged on motor base, and motor base is fixedly connected on housing, oil motor by shaft coupling by power transmission to wobbler shaft; Wobbler shaft is located on double-row angular contact bal bearing and single-row angular contact ball bearing, arranges little bearing holder (housing, cover) between double-row angular contact bal bearing and single-row angular contact ball bearing; Double-row angular contact bal bearing and single-row angular contact ball bearing are arranged on housing by large bearing holder (housing, cover); Bearing (ball) cover is fixedly connected on housing;
Described support section comprises: piston shoes pressing plate, tested piston shoes, spring base, Compress Spring, pretension plunger, plunger base, pretension plunger plate pressing and auxiliary piston shoes; Wherein, one end of pretension plunger is bulb, and the other end is right cylinder, and its central axis place has through hole; Pretension plunger is arranged in the cylinder holes of plunger base, and plunger base is fixedly connected on housing; Bulb one end of pretension plunger through pretension plunger plate pressing and piston shoes pressing plate hinged; Pretension plunger plate pressing is split-type structural, is made up of top board and lower platen, and is fixedly connected with piston shoes pressing plate successively, departs from piston shoes pressing plate for preventing the bulb of pretension plunger; Described piston shoes pressing plate two ends have two waist typed through hole, and holes is overlapped respectively and is pressed on tested piston shoes and auxiliary piston shoes; Between pretension plunger base and spring base, Compress Spring is set; Described spring base has external thread, is screwed into the degree of depth in cylinder holes realizes regulating Compress Spring pretightning force by control spring seat;
Described tested plunger pair part comprise be made up of tested plunger and tested plunger copper sheathing tested plunger pair, cylinder body, draw oil piston, O-ring seals, four axial force sensors, four axial force sensor screws, oil-feed end cap, draw oil column plug sleeve and draw oil piston pressing plate; Wherein, tested plunger is arranged in the tested plunger copper sheathing that is nested in cylinder body cylinder holes, and bulb one end of tested plunger is then hinged with tested piston shoes; Cylinder body contains central through hole, and bottom is with a circular base plate, and cylinder body is fixedly connected on four axial force sensors, and four axial force sensors are fixedly connected on oil inlet end and cover, and oil-feed end cap is fixedly connected on housing; Draw oil column plug sleeve and draw oil piston pressing plate and be nested in successively in oil-feed end cap, and be all fixedly connected with oil-feed end cap; Oil-feed end cap one end radially has one and draws oilhole, also has one draw oilhole at housing place, relevant position, is connected by oil inlet end cover cavity by drawing oilhole with housing cavity; Drawing oil piston is tubular structure, and its two ends are respectively small one and large one bulb shape; Draw oil piston be located in the cylinder holes of cylinder body, four axial force sensors central through hole, draw oil column plug sleeve and draw on oil piston pressing plate; The small size bulb end drawing oil piston is arranged in the cylinder holes of cylinder body, the large scale bulb end drawing oil piston be arranged on draw oil column plug sleeve ball-and-socket in; The ball-and-socket drawing the large scale bulb end of oil piston, draw oil piston pressing plate and draw oil column plug sleeve forms a spherical hinge; Draw oil piston small size bulb place and O-ring seals is installed;
The secondary part of described kicker ram comprises the kicker ram pair, outer connecting pipe, inner connection tube, the plunger base that are made up of kicker ram and kicker ram copper sheathing; Wherein, kicker ram is arranged in the kicker ram copper sheathing that is nested in plunger base holes, kicker ram bulb end and auxiliary piston shoes hinged; One end of inner connection tube is connected with plunger base holes, and the other end and housing pass in and out oilhole and be connected; One end and the housing of outer connecting pipe pass in and out oilhole and are connected, and the other end is connected with the second logical position of four-way connection; First logical position of four-way connection is connected with oil inlet end cap bore.
Further, described wobbler shaft is made of one piece by main shaft portion and swash plate part; The center of wobbler shaft has draws oilhole road, and the fluid in housing draws oilhole road via the center of wobbler shaft and introduces storing in oil groove in little bearing holder (housing, cover), then to introduce in the bearing pack supporting wobbler shaft via the duct in little bearing holder (housing, cover) by storing oil groove; Described bearing pack comprises double-row angular contact bal bearing and single-row angular contact ball bearing.
Further, described plunger base has damping hole, for being communicated with the cylinder holes of installing pretension plunger and the cylinder holes of installing kicker ram, the fluid in the plunger cavity of kicker ram flow into pretension plunger ball hinged place by the central through hole of described damping hole and pretension plunger.
Compared with prior art, the invention has the beneficial effects as follows:
This proving installation is by four axial force sensors containing central through hole, and draw the ingenious structure of oil piston assembly, eliminate other disturbing factor acted in measurand, achieve the measurement of plunger pair at the axial acting force of x, y, z and z-axis direction moment of torsion, make test unit one-piece construction more succinct, compact and reliable, fully ensure the easy replaceability of tested plunger piston slippery boots assembly; By the balanced configuration of tested plunger piston slippery boots assembly and kicker ram slippery boots assembly, and the adjustable pretension plunger of pretightning force, make one-piece construction more reliable, also significantly reduce the compression shock of system; Drawn the design of oilhole road and plunger base damping hole structure by wobbler shaft center, ensured the lubrication needs of bearing pack and piston shoes pressing plate critical support part, make proving installation can work in high rotating speed, high pressure operating mode.This proving installation terminal with compact integral structure is reliable, and part replacement is convenient, processing and testing cost low.The present invention is the deep development along with industrial technology, people propose more high pressure grade, more high workload rotating speed, more high-level efficiency performance requirement to axial plunger pump and produce, and make can be further in the research of the wear-resistant anti-wear performance of height of axial plunger pump plunger pair under more wide cut pressure and speed conditions condition, high lubricating property, high-bearing capacity performance.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of proving installation of the present invention;
Fig. 2 is the left view that the present invention tests;
Fig. 3 is the partial enlarged drawing of I part in Fig. 1;
In figure: oil motor 1, motor base 2, first flat key 3, shaft coupling 4, second flat key 5, wobbler shaft 6, lip-shaped sealed ring 7, bearing (ball) cover 8, trip bolt 9, spindle nut 10, collar 11, single-row angular contact ball bearing 12, arranged in series double-row angular contact bal bearing 13, piston shoes pressing plate 14, tested piston shoes 15, tested plunger 16, tested plunger copper sheathing 17, cylinder body 18, cylinder body screw 19, draw oil piston 20, four axial force sensors 21, four axial force sensor screws 22, case top lid 23, upper cover screw 24, gasket seal 25, oil-feed head bolts 26, O RunddichtringO 27, pressure transducer 28, pressure sensor base 29, four-way connection 30, oil-feed end cap 31, draw oil column plug sleeve 32, draw oil column plug sleeve O type circle 33, draw oil piston bridge screw 34, draw oil piston pressing plate 35, outer connecting pipe 36, inner connection tube 37, draw oil piston O type circle 38, plunger base screw 39, plunger base O type circle 40, spring base 41, Compress Spring 42, pretension plunger 43, kicker ram copper sheathing 44, plunger base 45, kicker ram 46, pretension plunger plate pressing screw 47, pretension plunger plate pressing 48, auxiliary piston shoes 49, large bearing holder (housing, cover) 50, little bearing holder (housing, cover) 51, bearing holder (housing, cover) O type circle 52, end cap O type circle 53, housing 54, motor base screw 55, level switch 56, temperature sensor 57, air cleaner 58, straight coupling 59, draining stop valve 60.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, a kind of high-voltage high-speed axial plunger pump plunger pair four axial force test device, it comprises: running part, support section, tested plunger pair part, the secondary part of kicker ram, case top lid 23, upper cover screw 24, gasket seal 25, pressure transducer 28, pressure sensor base 29, four-way connection 30, housing 54, level switch 56, temperature sensor 57, air cleaner 58, straight coupling 59 and draining stop valve 60; Wherein, running part is arranged on housing 54; The plunger cavity of tested plunger pair part is all connected with four-way connection 30 with the plunger cavity of the secondary part of kicker ram; Pressure transducer 28 is connected with four-way connection 30 by pressure sensor base 29; Mounting temperature sensor 57, level switch 56 and air cleaner 58 in case top lid 23, case top lid 23 is fixedly connected on housing 54 by upper cover screw 24, arranges gasket seal 25 between case top lid 23 and housing 54; Draining stop valve 60 is installed in the bottom of housing 54, and draining stop valve 60 is connected with housing 54 inner chamber by straight coupling 59; Housing 54 inner fluid temperature is monitored by temperature sensor 57, when oil liquid temperature is too high, injects cold oil by pouring orifice; When housing 54 inner fluid exceedes predetermined fluid level, level switch 56 sends alerting signal, and opens draining stop valve 60 and carry out draining, after in housing 54, liquid level is down to preset value, level switch 56 sends another signal, is closed by draining stop valve 60, stops release fluid.Described air cleaner 58 can be used as housing 54 pouring orifice after turning on.
Described running part comprises: oil motor 1, motor base 2, first flat key 3, shaft coupling 4, second flat key 5, wobbler shaft 6, lip-shaped sealed ring 7, bearing (ball) cover 8, trip bolt 9, spindle nut 10, collar 11, single-row angular contact ball bearing 12, double-row angular contact bal bearing 13, large bearing holder (housing, cover) 50, little bearing holder (housing, cover) 51, bearing holder (housing, cover) O type circle 52, end cap O type circle 53 and motor base screw 55; Wherein, described oil motor 1 is arranged on motor base 2, motor base 2 is fastened on bottom housing 54 by screw 55, oil motor 1 is connected with shaft coupling 4 by the first flat key 3, wobbler shaft 6 is connected with shaft coupling 4 by the second flat key 5, and oil motor 1 passes through shaft coupling 4 by power transmission to wobbler shaft 6; Wobbler shaft 6 is located on double-row angular contact bal bearing 13 and single-row angular contact ball bearing 12, arranges little bearing holder (housing, cover) 51 between double-row angular contact bal bearing 13 and single-row angular contact ball bearing 12, and little bearing holder (housing, cover) 51 is for the location of bearing pack inner ring; Double-row angular contact bal bearing 13 and single-row angular contact ball bearing 12 are connected on housing 54 by large bearing holder (housing, cover) 50; Bearing holder (housing, cover) O type circle 52 is set between large bearing holder (housing, cover) 50 and housing 54; Spindle nut 10 and collar 11 are for the axial pretightening of double-row angular contact bal bearing 13 and single-row angular contact ball bearing 12; Bearing (ball) cover 8 is fixedly connected on housing 54 by screw 9, arranges end cap O type circle 53 between bearing (ball) cover 8 and housing 54; Lip-shaped sealed ring 7 is arranged on wobbler shaft 6, for preventing the intrusion of axial oil liquid leakage and external environment condition dust etc.
Described support section comprises: piston shoes pressing plate 14, tested piston shoes 15, plunger base screw 39, plunger base O type circle 40, spring base 41, Compress Spring 42, pretension plunger 43, plunger base 45, pretension plunger plate pressing screw 47, pretension plunger plate pressing 48 and auxiliary piston shoes 49; Wherein, one end of pretension plunger 43 is bulb, and the other end is right cylinder, and its central axis place has through hole; Pretension plunger 43 is arranged in the cylinder holes of plunger base 45, and plunger base 45 is fixedly connected on housing 54 by plunger base screw 39, arranges plunger base O type circle 40 between plunger base 45 and housing 54; Bulb one end of pretension plunger 43 is located on pretension plunger plate pressing 48, and hinged with piston shoes pressing plate 14; Pretension plunger plate pressing 48 is fixedly connected with piston shoes pressing plate 14 by pretension plunger plate pressing screw 47, departs from piston shoes pressing plate 14 for preventing the bulb of pretension plunger 43; Described piston shoes pressing plate 14 two ends have two waist typed through hole, and holes is overlapped respectively and is pressed on tested piston shoes 15 and auxiliary piston shoes 49; Bottom pretension plunger 43 and between spring base 41, Compress Spring 42 is set, the pretightning force that the degree of depth regulates Compress Spring 42 to produce is screwed into by regulating spring seat 41, make the piston shoes pressing plate 14 tested piston shoes 15 of satisfied pushing and auxiliary piston shoes 49 press the requirement on the inclined-plane of wobbler shaft 6, avoid occurring de-boots phenomenon.
Described tested plunger pair part comprise be made up of tested plunger 16 and tested plunger copper sheathing 17 tested plunger pair, cylinder body 18, cylinder body screw 19, draw oil piston 20, four axial force sensor 21, four axial force sensor screw 22, oil-feed head bolts 26, O RunddichtringO 27, oil-feed end cap 31, draw oil column plug sleeve 32, draw oil column plug sleeve O type circle 33, draw oil piston bridge screw 34 and draw oil piston pressing plate 35; Wherein, tested plunger 16 is connected by typed ball bearing pair with tested piston shoes 15; Tested plunger 16 is arranged in the tested plunger copper sheathing 17 that is nested in cylinder body 18 cylinder holes; Cylinder body 18 is fixedly connected on four axial force sensors 21 by cylinder body screw 19, four axial force sensors 21 are fixedly connected on oil-feed end cap 31 by four axial force sensor screws 22, oil-feed end cap 31 is fixedly connected on housing 54 by oil-feed head bolts 26, arranges O RunddichtringO 27 between oil-feed end cap 31 and housing 54; Draw oil column plug sleeve 32 and draw oil piston pressing plate 35 and be nested in successively in oil-feed end cap 31, and be fixedly connected with oil-feed end cap 31 by drawing oil piston bridge screw 34; Draw to arrange between oil column plug sleeve 32 and oil-feed end cap 31 and draw oil column plug sleeve O type circle 33; Draw oil piston 20 for hollow tubular, its two ends are respectively small one and large one bulb shape, and the small size bulb end drawing oil piston 20 is provided with and draws oil piston O type circle 38; Draw oil piston 20 be located in the cylinder holes of cylinder body 18, four axial force sensors 21 central through hole, draw oil column plug sleeve 32 and draw on oil piston pressing plate 35, the small size bulb end drawing oil piston 20 is arranged in the cylinder holes of cylinder body 18, the large scale bulb end drawing oil piston 20 be arranged on draw oil column plug sleeve 32 ball-and-socket in; The ball-and-socket drawing the large scale bulb end of oil piston 20, draw oil piston pressing plate 35 and draw oil column plug sleeve 32 forms a spherical hinge, so both ensured that drawing oil piston 20 had certain swing degree of freedom in a lateral direction, in turn ensure that drawing oil piston 20 does not produce to-and-fro movement at axial direction, in order to avoid interference is to the measurement of acting force suffered by plunger pair and moment, ensure that force signal that four axial force sensors 21 detect only has the moment of torsion in the axial acting force of x, y, z produced from tested plunger pair suffered by cylinder body 18 and z-axis direction.
The secondary part of described kicker ram comprise be made up of kicker ram 46 and kicker ram copper sheathing 44 kicker ram pair, outer connecting pipe 36, inner connection tube 37, plunger base 45; Wherein, kicker ram 46 is connected by typed ball bearing pair with auxiliary piston shoes 49; Kicker ram 46 is arranged in the kicker ram copper sheathing 44 that is nested in plunger base 45 cylinder holes; One end of inner connection tube 37 is connected with plunger base 45 hole, and the other end passes in and out oilhole with housing 54 and is connected; First logical position of four-way connection 30 is connected with oil-feed end cap 31 hole, and the second logical position of four-way connection 30 is connected with one end of outer connecting pipe 36; The other end of outer connecting pipe 36 passes in and out oilhole with housing 54 and is connected.
Described wobbler shaft 6 is made of one piece by main shaft portion and swash plate part, and main shaft portion and swash plate part have carried out integrated transient equilibrium trim design; The center of wobbler shaft 6 has draws oilhole road, fluid in housing 54 draws oilhole road via the center of wobbler shaft 6 to be introduced and stores in oil groove in little bearing holder (housing, cover) 51, introducing in the bearing pack of support wobbler shaft 6 via the duct in little bearing holder (housing, cover) 51 by storing oil groove again, meeting the lubrication needs of bearing pack.Described bearing pack comprises a double-row angular contact bal bearing 13 and a single-row angular contact ball bearing 12, can bear great axial force and can meet required rotating speed grade; Wobbler shaft 6 rotates under the driving of oil motor 1, the swash plate part of rotation pushing piston shoes, makes the plunger that linked together by typed ball bearing pair with piston shoes reciprocating in plunger copper sheathing, thus the dynamic behavior of simulation axial plunger pump inner plunger pair; Described oil motor 1 is furnished with speed probe, can testing rotating speed.
Described plunger base 45 has damping hole, cylinder holes plunger base 45 being used for install pretension plunger 43 and the cylinder holes that is used for installing kicker ram 46 are connected, fluid in the plunger cavity of kicker ram 46 flow into pretension plunger 43 bulb hinged place by the central through hole of described damping hole and pretension plunger 43, lubricates typed ball bearing pair.Kicker ram 46, tested plunger 16, tested piston shoes 15 and auxiliary piston shoes 49 all have central through hole, fluid flow into the inclined-plane of typed ball bearing pair place and wobbler shaft 6 and the mating surface place of tested piston shoes 15 and auxiliary piston shoes 49 by plunger cavity, thus realize to the lubrication of typed ball bearing pair and reduce tested piston shoes 15 and auxiliary piston shoes 49 and wobbler shaft 6 inclined-plane between friction force.
The plunger cavity of tested plunger pair and the plunger cavity of kicker ram pair are connected on same four-way connection body 30, thus the intercommunication of plunger cavity inner fluid both realizing, when tested plunger pair is in suction (row) oily stroke, kicker ram pair is then just in time in symmetrical row's (suction) oily stroke, thus make the fluid of two plunger cavities can be complementary, avoid producing extra oil liquid pressure and impact; Pressure transducer 28 is arranged in pressure sensor base 29, and base 29 is connected on the threeway position of four-way connection 30, and pressure transducer 28 realizes the detection of dynamic to plunger cavity inner fluid pressure; The four-way position of four-way connection 30 is connected with pumping plant, provides pressure oil by pumping plant.
Pressure transducer 28 is all connected with data collecting card with temperature sensor 57, and data collecting card is connected with industrial computer, by industrial computer display, processes the data collected; The output signal line of level switch 56 is connected with the input signal cable of draining stop valve 60; The signal that level switch 56 sends passes to draining stop valve 60 by signal wire, the signal that draining stop valve 60 passes over according to the level switch 56 received, performs corresponding actions, or opens or close, discharge housing inner fluid during unlatching, during closedown, then stop emptying.
The course of work of the present invention is as follows:
Oil motor 1 is by shaft coupling 4, by power transmission to wobbler shaft 6, the wobbler shaft 6 supported by the single-row angular contact ball bearing 12 be arranged on housing 54 and arranged in series double-row angular contact bal bearing 13, rotary motion is there is under oil motor 1 drives, velocity of rotation is set up by oil motor 1, and is detected by the speed probe of autogamy on oil motor 1; Wobbler shaft 6 is made of one piece by main shaft portion and swash plate part, and the bevel inclination angle of swash plate is 16 °, and in upper and lower two symmetric positions in swash plate inclined-plane, each effect has tested piston shoes 15 and auxiliary piston shoes 49; Tested piston shoes 15 are connected by typed ball bearing pair with tested plunger 16, and tested plunger 16 is arranged in the tested plunger copper sheathing 17 in the cylinder holes of cylinder body 18, and tested plunger 16 forms tested plunger pair with tested plunger copper sheathing 17; Auxiliary piston shoes 49 are connected by typed ball bearing pair with kicker ram 46, and kicker ram 46 is arranged in the kicker ram copper sheathing 44 in the cylinder holes of plunger base 45, and kicker ram 46 and kicker ram copper sheathing 44 form kicker ram pair; Tested piston shoes 15 and auxiliary piston shoes 49 cover are pressed in piston shoes pressing plate 14 times, piston shoes pressing plate 14 is hinged with pretension plunger 43, the pretightning force having the Compress Spring 42 set up by spring base 41 to produce is acted on bottom pretension plunger 43, this pretightning force acts on piston shoes pressing plate 14 by pretension plunger 43, make piston shoes pressing plate 14 tightly press against tested piston shoes 15 and auxiliary piston shoes 49, thus make tested piston shoes 15 and auxiliary piston shoes 49 be pressed on swash plate inclined-plane; Under the swash plate inclined-plane of the wobbler shaft rotated drives, there is sliding motion in tested piston shoes 15 and auxiliary piston shoes 49, thus order about tested plunger 16 and kicker ram 46 moves back and forth respectively in tested plunger copper sheathing 17 and kicker ram copper sheathing 44 on swash plate inclined-plane.
There is respective change due to the to-and-fro movement of tested plunger 16 in the cavity volume volume in the cylinder holes of cylinder body 18, this cavity volume is referred to as the plunger cavity of tested plunger pair; In like manner, also there is respective change along with the to-and-fro movement of kicker ram 46 in the cavity volume volume in the cylinder holes of plunger base 45, this cavity volume is referred to as the plunger cavity of kicker ram pair; The plunger cavity of tested plunger pair is by drawing oil piston 20 and oil-feed end cap 31 is connected with the first logical position of four-way connection 30; Second logical position of four-way connection 30, by outer connecting pipe 36 and inner connection tube 37, is connected with the plunger cavity of kicker ram pair; The threeway position of four-way connection 30 is connected with pressure sensor base 29, pressure sensor base 29 is provided with pressure transducer 28; The four-way position of four-way connection 30 is connected with pumping plant oil sources, and pressure oil liquid is provided by pumping plant, flows into the plunger cavity of tested plunger pair and the plunger cavity of kicker ram pair by four-way connection, and carries out Real-time and Dynamic Detection by pressure transducer 28 pairs of oil liquid pressures.
Cylinder body 18 is arranged on four axial force sensors 21, four axial force sensors 21 are fixedly connected on oil-feed end cap 31 by four axial force sensor screws 22, oil-feed end cap 31 is fixedly connected on housing 54 by oil-feed head bolts 26, the moment of torsion forming interaction force on the three-dimensional between the tested plunger 16 of tested plunger pair and tested plunger copper sheathing 17 and axial direction is acted on four axial force sensors 21 by cylinder body 18, thus carries out Real-time and Dynamic Detection by four axial force sensors 21, in housing 54, initial fluid injects by turning on air cleaner 58, housing inner fluid liquid level is regulated by the level switch 56 and the draining stop valve 60 be arranged on bottom housing 54 being arranged on case top lid 23, the output signal line of level switch 56 is connected with the input signal cable of draining stop valve 60, when housing 54 inner fluid liquid level reaches the liquid level of setting, level switch 56 sends corresponding signal, and by signal wire by signal transmission to draining stop valve 60, draining stop valve 60 is according to the signal received, perform corresponding actions, or Open valve, or valve-off, housing inner fluid is discharged during valve opening, then emptying is stopped during valve closing, housing 54 inner fluid temperature, by temperature sensor 57 Real-Time Monitoring being arranged on case top lid 23, when oil liquid temperature is too high, is then injected cold oil by pouring orifice and is cooled.
Content described in this instructions embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention is also forgiven those skilled in the art and conceived the equivalent technologies means that can expect according to the present invention.
Claims (3)
1. a high-voltage high-speed axial plunger pump plunger pair four axial force test device, it is characterized in that, it comprises: running part, support section, tested plunger pair part, the secondary part of kicker ram, case top lid (23), pressure transducer (28), four-way connection (30), housing (54), level switch (56), temperature sensor (57), air cleaner (58), draining stop valve (60), pumping plant, data collecting card and industrial computer etc.; Wherein, running part is arranged on housing (54); Tested plunger pair part is connected with the first logical position of four-way connection (30), and the secondary part of kicker ram is connected with the second logical position of four-way connection (30); Pressure transducer (28) is connected with the threeway position of four-way connection (30); The four-way position of four-way connection (30) is connected with pumping plant; At case top lid (23) upper mounting temperature sensor (57), level switch (56) and air cleaner (58), case top lid (23) is fixedly connected with housing (54); Draining stop valve (60) is installed in the bottom of housing (54), and draining stop valve (60) is connected with housing (54) inner chamber; Pressure transducer (28) is all connected with data collecting card with temperature sensor (57), and data collecting card is connected with industrial computer; The output signal line of level switch (56) is connected with the input signal cable of draining stop valve (60);
Described running part comprises: oil motor (1), motor base (2), shaft coupling (4), wobbler shaft (6), bearing (ball) cover (8), single-row angular contact ball bearing (12), double-row angular contact bal bearing (13), large bearing holder (housing, cover) (50), little bearing holder (housing, cover) (51); Wherein, described oil motor (1) is arranged on motor base (2), motor base (2) is fixedly connected on housing (54), oil motor (1) by shaft coupling (4) by power transmission to wobbler shaft (6); Wobbler shaft (6) is located on double-row angular contact bal bearing (13) and single-row angular contact ball bearing (12), arranges little bearing holder (housing, cover) (51) between double-row angular contact bal bearing (13) and single-row angular contact ball bearing (12); Double-row angular contact bal bearing (13) and single-row angular contact ball bearing (12) are arranged on housing (54) by large bearing holder (housing, cover) (50); Bearing (ball) cover (8) is fixedly connected on housing (54);
Described support section comprises: piston shoes pressing plate (14), tested piston shoes (15), spring base (41), Compress Spring (42), pretension plunger (43), plunger base (45), pretension plunger plate pressing (48) and auxiliary piston shoes (49); Wherein, one end of pretension plunger (43) is bulb, and the other end is right cylinder, and its central axis place has through hole; Pretension plunger (43) is arranged in the cylinder holes of plunger base (45), and plunger base (45) is fixedly connected on housing (54); Bulb one end of pretension plunger (43) is hinged through pretension plunger plate pressing (48) and piston shoes pressing plate (14); Pretension plunger plate pressing (48) is split-type structural, is made up of top board and lower platen, and is fixedly connected with piston shoes pressing plate (14) successively, departs from piston shoes pressing plate (14) for preventing the bulb of pretension plunger (43); Described piston shoes pressing plate (14) two ends have two waist typed through hole, and holes is overlapped respectively and is pressed on tested piston shoes (15) and auxiliary piston shoes (49); Between pretension plunger (43) bottom and spring base (41), Compress Spring (42) is set; Described spring base (41) has external thread, is screwed into the degree of depth in cylinder holes realizes regulating Compress Spring (42) pretightning force by control spring seat;
Described tested plunger pair part comprise be made up of tested plunger (16) and tested plunger copper sheathing (17) tested plunger pair, cylinder body (18), draw oil piston (20), O-ring seals (38), four axial force sensors (21), four axial force sensor screws (22), oil-feed end cap (31), draw oil column plug sleeve (32) and draw oil piston pressing plate (35); Wherein, tested plunger (16) is arranged in the tested plunger copper sheathing (17) that is nested in cylinder body (18) cylinder holes, and bulb one end of tested plunger (16) is then hinged with tested piston shoes (15); Cylinder body (18) is containing central through hole, bottom is with a circular base plate, cylinder body (18) is fixedly connected on four axial force sensors (21), four axial force sensors (21) are fixedly connected on oil-feed end cap (31), and oil-feed end cap (31) is fixedly connected on housing (54); Draw oil column plug sleeve (32) and draw oil piston pressing plate (35) and be nested in successively in oil-feed end cap (31), and be all fixedly connected with oil-feed end cap (31); Oil-feed end cap (31) one end radially has one and draws oilhole, also has one draw oilhole at relevant position housing (54) place, by drawing oilhole by oil-feed end cap (31) inner chamber and housing (54) intracavity inter-connection; Drawing oil piston (20) is tubular structure, and its two ends are respectively small one and large one bulb shape; Draw oil piston (20) be located in the cylinder holes of cylinder body (18), four axial force sensors (21) central through hole, draw oil column plug sleeve (32) and draw on oil piston pressing plate (35); The small size bulb end drawing oil piston (20) is arranged in the cylinder holes of cylinder body (18), the large scale bulb end drawing oil piston (20) be arranged on draw oil column plug sleeve (32) ball-and-socket in; The ball-and-socket drawing the large scale bulb end of oil piston (20), draw oil piston pressing plate (35) and draw oil column plug sleeve (32) forms a spherical hinge; Draw oil piston (20) small size bulb place and O-ring seals (38) is installed;
The secondary part of described kicker ram comprise be made up of kicker ram (46) and kicker ram copper sheathing (44) kicker ram pair, outer connecting pipe (36), inner connection tube (37), plunger base (45); Wherein, kicker ram (46) is arranged in the kicker ram copper sheathing (44) that is nested in plunger base (45) hole, kicker ram (46) bulb end and auxiliary piston shoes (49) hinged; One end of inner connection tube (37) is connected with plunger base (45) hole, and the other end passes in and out oilhole with housing (54) and is connected; One end of outer connecting pipe (36) passes in and out oilhole with housing (54) and is connected, and the other end is connected with the second logical position of four-way connection (30); First logical position of four-way connection (30) is connected with oil-feed end cap (31) hole.
2. high-voltage high-speed axial plunger pump plunger pair four axial force test device according to claim 1, it is characterized in that, described wobbler shaft (6) is made of one piece by main shaft portion and swash plate part; The center of wobbler shaft (6) has draws oilhole road, fluid in housing (54) draws oilhole road via the center of wobbler shaft (6) and introduces storing in oil groove in little bearing holder (housing, cover) (51), then to introduce in the bearing pack supporting wobbler shaft (6) via the duct in little bearing holder (housing, cover) (51) by storing oil groove; Described bearing pack comprises double-row angular contact bal bearing (13) and single-row angular contact ball bearing (12).
3. high-voltage high-speed axial plunger pump plunger pair four axial force test device according to claim 1, it is characterized in that, described plunger base (45) has damping hole, for being communicated with the cylinder holes of installing pretension plunger (43) and the cylinder holes of installing kicker ram (46), the fluid in the plunger cavity of kicker ram (46) flow into pretension plunger (43) bulb hinged place by the central through hole of described damping hole and pretension plunger (43).
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| CN201510570352.5A CN105181205B (en) | 2015-09-09 | 2015-09-09 | A kind of axial force test device of high-voltage high-speed axial plunger pump plunger pair four |
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| CN201510570352.5A CN105181205B (en) | 2015-09-09 | 2015-09-09 | A kind of axial force test device of high-voltage high-speed axial plunger pump plunger pair four |
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| CN106289740A (en) * | 2016-07-29 | 2017-01-04 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of frock testing the axial pulling-out force of plunger displacement pump slippery boots assembly and method |
| CN110439798A (en) * | 2019-07-19 | 2019-11-12 | 北京航空航天大学 | A kind of plunger motion lateral force analogue measurement testing stand of high speed plunger pump |
| CN110455506A (en) * | 2019-07-19 | 2019-11-15 | 北京航空航天大学 | A kind of high pressure servo plunger pump key rubs secondary comprehensive test system and control method |
| CN111472955A (en) * | 2020-03-26 | 2020-07-31 | 浙江大学 | External swash plate plunger pump pre-pressing force and variable adjusting device |
| CN114020058A (en) * | 2021-11-03 | 2022-02-08 | 中国工程物理研究院机械制造工艺研究所 | Internal force loading device |
| CN114593030A (en) * | 2022-03-30 | 2022-06-07 | 华中科技大学 | Miniature high-pressure high-volume-efficiency plunger pump |
| CN114876783A (en) * | 2022-05-24 | 2022-08-09 | 浙江大学高端装备研究院 | Embedded pull-out force measuring device for plunger piston shoe structure |
| CN115163602A (en) * | 2022-07-08 | 2022-10-11 | 南通奥里斯特机械有限公司 | Motor plunger assembly for realizing rapid braking |
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| CN115163602A (en) * | 2022-07-08 | 2022-10-11 | 南通奥里斯特机械有限公司 | Motor plunger assembly for realizing rapid braking |
| CN115163602B (en) * | 2022-07-08 | 2023-11-07 | 南通奥里斯特机械有限公司 | Motor plunger assembly for realizing quick braking |
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