CN102053015B - Tester for thrust bearing - Google Patents
Tester for thrust bearing Download PDFInfo
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- CN102053015B CN102053015B CN200910236771.XA CN200910236771A CN102053015B CN 102053015 B CN102053015 B CN 102053015B CN 200910236771 A CN200910236771 A CN 200910236771A CN 102053015 B CN102053015 B CN 102053015B
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Abstract
The invention provides a tester for a thrust bearing, comprising a loading system (13), a test bed component (10), a rotary transmission system (4), an electric system and a control system, wherein the loading system (13), the test bed component (10) and the rotary transmission system (4) are arranged on a stand component (5). The stand component (5) is taken as a basic frame, and the loading system (13) is vertically installed above the test bed component (10). A test press head (40) at the lower section of the test bed component (10) is pressured by a piston of a hydraulic cylinder (25), wherein a test bearing (9) is positioned on the test press head (40). The rotary transmission component (4) is arranged below the test bed component (10) to drive the test press head (40) to rotate by a transmission main shaft (39); and the running situations of the test bearing (9) are tested under the condition of setting parameter sum by utilizing a pressure sensor (12) and a torsion sensor (7). The tester is applied to testing a heavy-load thrust bearing with irregular size, has high degree of automation, and can properly control the feedback by a computer.
Description
Technical field
The test unit field that the invention belongs to test bearing performance, is specifically related to a kind of thrust bearing tester.
Background technology
Bearing is basic components and the critical component of widespread use in engineering goods, and the quality of its performance plays vital effect to product quality.Particularly, for the subsurface tool being applied in petroleum drilling and mining, the reliability of its bearing plays key effect to the smooth enforcement of drilling operation.Therefore, the q&r of bearing more and more comes into one's own, and durability test and the Performance Evaluation of bearing are regarded as the most important thing, and particularly for the bearing under special operation condition, its performance test becomes the key link of kit quality control.
Along with developing rapidly of World Oil Industry, drilling operation is increasing, thereupon also more and more higher with the reliability requirement of subsurface tool to drilling.But petroleum drilling and mining underground working is severe, for the drill and petroleum extraction tools of down-hole, if the thrust bearing of the uses such as helicoid hydraulic motor, rotation hanger is except standing the test of the conditions such as temperature, pressure, impurity, heavy duty, also should there is the longer life-span.In addition, down-hole drill and petroleum extraction tools specification is of a great variety, and dimension series changes various, causes the specification limit of thrust bearing demand is strengthened.These factors have all caused the measurement difficulty of such thrust bearing large, and measurement data is inaccurate.
In current prior art, the patent No. is that the patent of ZL95208823.1 discloses a kind of slide thrust bearing accelerated wear test on-line measurement testing machine that online instantaneous wearing and tearing are measured to slide thrust bearing, its principle of work is that the change in displacement by lever-loading principle and lever realizes the online wear measurement to slide thrust bearing, but it has the following disadvantages: (1) thrust bearing carrying range ability is little, load change is adjusted inconvenient, and heavy-loaded thrust bearing test is difficult for realizing; (2) motor directly rotates, and rotating speed and driving torque are adjusted inconvenience; (3) adopt lever principle to load, measure, precision is difficult for guaranteeing; (4) measurement data adopts and manually reads, and automaticity is low.
The patent No. is that the patent of US6199425 B1 discloses a kind of rotary test testing machine to thrust bearing, its principle of work is to rotate by the direct motor drive proving installation that utilizes magnetic force or air fluid loading principle and settle by line, but it has the following disadvantages: (1) is suitable for low load, high-revolving bearing test, cannot check heavy-duty bearing; (2) specification of the bearing of test is smaller; (3) installation of test bearing is inconvenient, and installation accuracy is had relatively high expectations.
Publication number is that the application of CN1828264A discloses a kind of on-line measuring and testing machine for radial sliding bearing friction and wearing, comprise several parts such as driving, loading, test unit and signals collecting, its principle of work is by lever principle, testpieces to be loaded, by variable-frequency motor, drive testpieces to rotate, and adopt sensor acquisition test data, but it has the following disadvantages: (1) requires the exemplar of test must be processed into given size, has limited the range of application of testing machine; (2) adopt lever principle to load, measure, precision is difficult for guaranteeing; (3) dismounting of testpieces is inconvenient, and testpieces difficulty of processing is large.
Prior art document (" large-scale radially with thrust slide bearing test platform structure design and application ", Hu Zhaoyang etc., Qiqihar University's journal, 2005.6, the 21st the 2nd phase of volume, P80-82) that disclose a kind of transverse bearing and composite testing platform thrust bearing test, comprise tractor, body, load maintainer, several parts such as oil system and measuring system, its principle of work is by hydraulic jack, testpieces to be loaded, by variable-frequency motor, drive testpieces to rotate, and adopt sensor acquisition test data, but it has the following disadvantages: the test main shaft of (1) this test unit is horizontal, when carrying out Radial test bearing test, easily cause the unstability of main shaft, (2) test of this test unit is with main shaft when carrying out thrust test bearing test, and the installation of test bearing is inconvenient.
Because prior art exists above-mentioned deficiency, the special purpose test equipment of the thrust bearing also not using for down-hole drill and petroleum extraction tools at present.
Summary of the invention
The object of the invention is to solve the difficult problem existing in above-mentioned prior art, a kind of thrust bearing testing machine is provided, for checking, assess the Properties of Thrust Bearings of petroleum drilling subsurface tool special use, test is provided and evaluates.
The present invention is achieved by the following technical solutions:
, comprise loading system, testing table parts, rotary drive system and rack unit.
Described loading system, testing table parts and rotary drive system be take described rack unit as basic framework, and mounted thereto successively by vertical order: described loading system is arranged on testing table parts top, and rotary transmission part is arranged on testing table parts below.
Described testing table parts are provided with on the outer wall of test head ，Qi lower end and are positioned with test bearing, and test bearing is placed in the cooling bath that heat eliminating medium is housed.The effect of described cooling bath is used for filling heat eliminating medium, with the bearing in test, carries out cooling.Heat eliminating medium wherein can be the conventional heat eliminating mediums such as mud or clear water.Described loading system is hydraulic loading system conventional in prior art, adopts hydraulic cylinder piston formula to load, and the loading piston of its hydraulic cylinder vertically pressurizes to the test head of testing table parts, and is provided with pressure transducer gaging pressure; Described rotary drive system is motor transmission system conventional in prior art, adopt motor-driven, the output shaft of its reductor is axially connected vertically upward and with transmission main shaft, transmission main shaft is axially connected with test head, driven by motor transmission main shaft rotates, thereby the rotation of motoring ring test pressure head, and be provided with torque sensor measurement moment of torsion.
Loading system provides test required load, and rotary drive system provides power and the rotating speed of test.Along with the loading piston of hydraulic cylinder is exerted pressure to test head, by driven by motor test head, rotate simultaneously, and to test bearing, exert pressure and drive its rotation, and utilize pressure transducer and torque sensor to test bearing the working order under the pressure parameter of setting, rotating speed, torque conditions test.
Specifically:
Test unit mid frame parts of the present invention comprise frame base, framework soleplate, frame dragging plate, frame top board and column.Described frame base is the framed structure with upper leveling board.Described framework soleplate, frame dragging plate, frame top board are the flat board being parallel to each other, and wherein framework soleplate is fixedly mounted on the upper leveling board of frame base.Two or more columns are from top to bottom successively vertically through frame top board, frame dragging plate and framework soleplate, and described column is distributed near ，Qi lower end, dull and stereotyped Si Bian position and is fixed on the upper leveling board of described frame base.Described frame top board is fixed on column top, and described frame dragging plate, between frame top board and framework soleplate, and can slide on column.
Further, column in the frame base of described rack unit on leveling board is preferably four, described framework soleplate, frame dragging plate, frame top board are preferably the rectangular flat of concentricity line, and described column vertically passes the Si Ge angle of frame top board, frame dragging plate and framework soleplate flat board from top to bottom successively.Make like this rack unit more stable.
The axial load when framed structure that above-described frame top board, framework soleplate and column form is used for bearing test, thus to test bearing, provide lower compressive load.Whole rack unit becomes the basic framework of loading system, testing table parts and the rotary drive system of test unit.
In test unit of the present invention, loading system adopts hydraulic cylinder piston formula loading technique conventional in prior art, comprises hydraulic power unit, hydraulic cylinder, loading piston etc.Hydraulic power unit is connected with described hydraulic cylinder by pipeline, realizes the uplink and downlink that load piston.Hydraulic cylinder is fixedly mounted on the frame top board of rack unit, loads piston and from center, passes frame top board, and frame dragging plate is vertically pressurizeed, and between the lower end of loading piston and frame dragging plate, pressure transducer is housed.Pressure transducer is used for measuring the axial downforce that is offered hydraulic cylinder by hydraulic power unit, and the hydraulic coupling that the size of lower compressive load provides by adjustment hydraulic power unit obtains.
Further, loading piston lower end in described loading system is fixed with carrier, on described carrier and frame dragging plate, along periphery, be respectively equipped with corresponding connecting hole, by set bolt, pass the corresponding connecting hole on carrier and dragging plate, and use nut lock below frame dragging plate; Between described carrier and described frame dragging plate, the center of carrier lower surface is installed with pressure transducer, is used for measuring the axial downforce being loaded by hydraulic cylinder.
Rotary drive system in test unit of the present invention, adopts motor-driven technology conventional in prior art.Described rotary drive system comprises transmission main shaft, reductor, variable-frequency motor etc.Rotary drive system is arranged on the upper leveling board below of frame base, the output shaft of its reductor is axially connected with transmission main shaft by torque sensor vertically upward, transmission main shaft through the upper leveling board of frame base and on framework soleplate, framework soleplate centre is a through hole, transmission main shaft through its hypomere of this through hole by upper and lower two alignment bearing location and installation in framework soleplate through hole; By motor, through reductor, drive transmission main shaft to rotate.Described alignment bearing is selected the radial ball ball bearing that is commonly used to axle location in prior art.
Further, described in described rotary drive system, reductor is fixed by the frame of slowing down.The lower surface Shang，Qi lower end that described deceleration frame upper end is fixed on framework soleplate through leveling board in frame base is fixed with reductor, and torque sensor is fixed by the sensor holder being fixed on deceleration framework lateral plate, for preventing the shell rotation of torque sensor.Torque sensor is positioned at described reductor top.The output shaft of described reductor is coaxially connected with the lower sub of described torque sensor, and the top connection of described torque sensor is coaxially connected with described transmission main shaft.
In test unit of the present invention, testing table parts, between frame dragging plate and framework soleplate, comprise test base, test head.It is a through hole that described test base is fixed on described framework soleplate Shang，Qi centre, coaxial with the through hole on framework soleplate; On described test base, around through hole, be provided with an annular cooling bath that heat eliminating medium is housed; Described test head is the right cylinder of inner chamber hollow, coaxial with the through hole of test base, and its outer wall divides large, medium and small three parts with external diameter from top to bottom; Between its large outer-diametric portion and middle outer radius portion, being preferably conical surface transition, is half the circumference of the sleeve where it joins the shoulder structure between middle outer radius portion and small outer-diametric portion; The large outer-diametric portion of test head upper end by thrust loading bearing and bearing outside location and installation thereof on described frame dragging plate lower surface; The outer wall Shang，Qi upper surface that test bearing is enclosed within test head lower end small outer-diametric portion is stuck under described half the circumference of the sleeve where it joins the shoulder; The inner chamber of test head hollow is divided into two sections with internal diameter difference, and its epimere is little inner-diameter portion whose, and its hypomere is large diameter part, and the internal diameter of hypomere large diameter part is greater than the outside diameter of inner ring of annular cooling bath; Described transmission main shaft through the through hole of test base and on annular cooling bath, when giving the pressurization of sliding frame dragging plate, when motoring ring test pressure head moves downward, when transmission main shaft inserts the little inner-diameter portion whose of test head inner chamber epimere from below, its epimere is connected with spline with test head inner chamber epimere contact portion, selecting this mode that can not relatively rotate but can slide to axial to connect is because if axially not slidably, so axial load is just by having born of transmission main shaft etc. and so on, rather than measured bearing is born; And be axially slidably also convenient to unloading and the installation of test bearing on test head.This kind of connected mode is preferred: the contact portion of described transmission main shaft epimere and test head inner chamber epimere is connected with a joggle by spline tooth.
Now the interior ring of annular cooling bath inserts test head inner chamber hypomere, and the test bearing that is positioned at test head lower end is immersed in heat eliminating medium; The bottom land that is against annular cooling bath is touched in the lower surface of test bearing, and the lower surface of test head is higher than the lower surface of test bearing, between itself and bottom land, leaves space.This is by test base, for measured bearing, to bear axial load in order to prevent.Realize thus rising, decline and the rotation of test head.Test head is descending to be acted on test bearing, and test load is provided.
The above loads piston, pressure transducer, test head, test bearing, annular cooling bath and transmission main shaft and is same axis.
Further:
In described testing table parts, there is annular boss at center, test head upper surface, and itself and test head upper surface form annular half the circumference of the sleeve where it joins the shoulder, and thrust carrying bearing holder (housing, cover) is on this annular half the circumference of the sleeve where it joins the shoulder; Described frame dragging plate lower surface is fixed with terminal pad, thrust loading bearing is provided with bearing outside outward, bearing outside upper end is fixedly connected with the lower surface of terminal pad, its lower end is provided with bearing platen test head is stuck in bearing outside, described test head by thrust loading bearing and bearing outside location and installation below frame dragging plate.
Annular cooling bath on test base in described testing table parts, comprise cooling bath urceolus and cooling bath inner core, described cooling bath urceolus internal sleeve has cooling bath inner core, both are all coaxial with the through hole of test base, and the internal diameter of cooling bath inner core is more than or equal to through-hole aperture, the external diameter of cooling bath inner core is less than the internal diameter of described test head inner chamber hypomere large diameter part; The lower end of cooling bath urceolus and cooling bath inner core is all fixedly mounted on described test base, and cooling bath urceolus and cooling bath inner core form annular cooling bath with test base upper surface between the two, and heat eliminating medium is wherein housed.More preferably: on described test base upper surface, around the periphery of cooling bath inner core, be provided with circular orientation groove.When carrying out the installation of test bearing, only need mention the test head in loading system is up, test bearing is installed in the above circular orientation groove of test base, the inwall by circular orientation groove carrys out Primary Location test bearing.Then test head is pressed down, by the next final location test bearing of cylindrical of test head hypomere.
Being fixedly connected with of mentioning in test unit of the present invention can adopt the various mode that is fixedly connected with of the prior art, comprising: nut, screw are fixed, key pin formula is fixedly connected with, welding etc.
Test unit of the present invention also comprises control system.In described loading system, the electrical system being connected with the hydraulic power unit that hydraulic pressure is provided to hydraulic cylinder, and described pressure transducer is connected with control system, by control system, carrys out Control experiment pressure; Motor and torque sensor in described rotary drive system are connected with control system.Moment of torsion, the pressure signal of torque sensor and pressure transducer test reach control system, by control system, carry out Control experiment rotating speed.
Described control system comprises computer system, can to torque signal and pressure signal, monitor in real time by computer system, and variation that can automatic pressure control, realize the automatic control to test unit.
Compared with prior art, the invention has the beneficial effects as follows: (1) automaticity is high, by controlling computing machine, carry out the setting of test parameters, and the instantaneous acquiring of test bearing data, storage and analysis, and carry out in good time FEEDBACK CONTROL by computing machine; (2) degree of modularity of package unit is high, is convenient to maintenance and the maintenance of unit equipment; (3) stepless change of having rotated while having realized bearing measuring, provides enough rotary torques, and can adjust the pretightning force of torque drive belt; (4) be convenient to the gapless adjustment of various load, realized a plurality of load pressure-bearing tests of bearing; (5) realized the lifetime measurement test to bearing under various heat eliminating medium environment; (6) test head and testing table separate, and by hydraulic pressure, mention test head, have facilitated the dismounting of test bearing; (7) heavy-loaded thrust bearing of applicable unconventional size test.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is the structural representation of thrust bearing tester of the present invention
Fig. 2 is the local enlarged diagram of the rack unit syndeton of thrust bearing tester of the present invention.
Fig. 3 is the partial schematic diagram of the loading system of thrust bearing tester of the present invention
Fig. 4 is the partial schematic diagram of the testing table parts of thrust bearing tester of the present invention
Fig. 5 is the part sectioned view of the testing table parts of thrust bearing tester of the present invention.
Fig. 6 is the partial schematic diagram of the rotary drive system of thrust bearing tester of the present invention
Embodiment
As shown in Figure 1, a kind of thrust bearing tester, comprises loading system 13, testing table parts 10, rotary drive system 4 and rack unit 5.
It is basic framework that described loading system 13, testing table parts 10 and rotary drive system 4 be take described rack unit 5, and mounted thereto successively by vertical order: described loading system 13 is arranged on testing table parts 10 tops, rotary transmission part 4 is arranged on testing table parts 10 belows.Described loading system 13, testing table parts 10 and rotary transmission part 4 are arranged on described rack unit 5.Described loading system 13 is connected with testing table parts 10, and described testing table parts 10 are connected with rotary transmission part 4.Loading system 13 provides test required load, and rotary transmission part 4 provides power and the speed of test.
Described rack unit 5 comprises frame platform 6, framework soleplate 8, frame dragging plate 11, frame top board 14 and four columns 19.Described column 19 is from top to bottom successively through described frame top board 14, frame dragging plate 11 and framework soleplate 8, and described column 19 is fixed on described frame platform 6 (as shown in Figure 2) by ring-shaped step 21 and the 3rd set nut 20 of lower end.Described frame top board 14 is fixed on described column 19 tops by the first set nut 16 and the second set nut 17, described framework soleplate 8 is fixed on described column 19 bottoms, described frame dragging plate 11, between described frame top board 14 and framework soleplate 8, and can slide on described column 19.The axial load when framed structure that frame top board 14, framework soleplate 8 and column 19 form is used for bearing test, thus lower compressive load is provided to measured bearing 9.Whole rack unit 5 becomes the integrated basis of loading system 13, testing table parts 10 and the rotary drive system 4 of test.
As shown in Figure 3, described loading system 13 comprises hydraulic power unit 3, hydraulic cylinder 25, loads piston 24, carrier 27 and pressure transducer 12.Described hydraulic power unit 3 is connected with described loading system 13 with backhaul fuel feed pump 18 by loading fuel feed pump 15, realizes the uplink and downlink that load piston 24; Described hydraulic cylinder 25 is weldingly fixed on described frame top board 14, loads piston 24Cong center and by platen 26 and the second set bolt 23, is fixed with carrier 27 through frame top board 14，Qi lower end.On described carrier 27 and frame dragging plate 11, along periphery, be respectively equipped with corresponding connecting hole, the corresponding connecting hole passing on carrier 27 and dragging plate 11 by the first set bolt 22, and use nut lock below frame dragging plate 11.Between described carrier 27 and described frame dragging plate 11.Described pressure transducer 12 is fixed on the center of described carrier 27 lower surfaces by the 3rd set bolt 28.Pressure transducer 12 is used for measuring the axial downforce that is offered hydraulic cylinder 25 by hydraulic power unit 3, and the hydraulic coupling that the size of lower compressive load provides by adjustment hydraulic power unit 3 obtains.
As shown in Figure 4, described testing table parts 10, between frame dragging plate 11 and framework soleplate 8, comprise test base 30, cooling bath urceolus 31, cooling bath inner core 41, thrust loading bearing 35 and test head 40.Described test head 40 is the right cylinder of inner chamber hollow, coaxial with the through hole of test base 8, and its outer wall divides large, medium and small three parts with external diameter from top to bottom.Between its large outer-diametric portion and middle outer radius portion, being conical surface transition, is half the circumference of the sleeve where it joins the shoulder structure between middle outer radius portion and small outer-diametric portion.There is annular boss at described test head 40 centers, upper surface, and itself and test head upper surface form annular half the circumference of the sleeve where it joins the shoulder, and thrust loading bearing 35 is enclosed within on this annular half the circumference of the sleeve where it joins the shoulder.At described frame dragging plate 11 lower surfaces, by the 5th set bolt 37, be fixed with terminal pad 36, the bearing outside 38 of described thrust loading bearing 35 is weldingly fixed on the lower surface of described terminal pad 36.Described test head 40 is positioned in described bearing outside 38 by the 4th set bolt 33 and platen 34.Realize thus rising, decline and the rotation of test head 40.The outer wall Shang，Qi upper surface that test bearing 9 is enclosed within test head 40 lower end small outer-diametric portions is stuck under described half the circumference of the sleeve where it joins the shoulder.Test head 40 is descending to be acted on test bearing 9, and test load is provided.
Described test base 30 is fixed on described framework soleplate 8 by the 6th set bolt 42, and described cooling bath urceolus 31 and cooling bath inner core 41 are nested, and is arranged on described test base 30.Cooling bath urceolus 31 and cooling bath inner core 41 form annular cooling bath with test base 30 upper surfaces between the two.Between described cooling bath urceolus 31 and cooling bath inner core 41, heat eliminating medium 32 is housed, heat eliminating medium 32 adopts clear water or mud.On described test base 30 upper surfaces, around the periphery of cooling bath inner core 41, be provided with circular orientation groove 63, the Primary Location for test bearing 9 on test base 30.When reality is used, the test head 40 that moves up, is placed on test bearing 9 in the circular orientation groove 63 on test base 30, and the inwall 65 by circular orientation groove 63 carrys out Primary Location test bearing 9; Then test head 40 is pressed down, by the final location test bearing 9 of cylindrical 64 of test head 40 hypomeres.
As shown in Figure 6, described rotary drive system 4 comprises transmission main shaft 39, torque sensor 7, deceleration frame 56, reductor 57, variable-frequency motor 58 and motor cabinet 60.Described motor cabinet 60 is positioned at the bottom of described frame base 6 by adjusting bolt 61 and set bolt 62, described variable-frequency motor 58 is fixed on described motor cabinet 60.The motor pulley 59 of described variable-frequency motor 58 is connected by belt 47 with the reductor belt pulley 46 of described reductor 57, can adjust the tension force of belt 47 by adjusting bolt 61.
The above loads piston 24, pressure transducer 12, test head 40, test bearing 9, annular cooling bath and transmission main shaft 39 and is same axis.
Described test unit also comprises electrical system and control system as shown in Figure 1, and described hydraulic power unit 3 is connected with described electrical system; Described electrical system is connected with described control system.Described electrical system is arranged in regulator cubicle 2; Described control system is arranged in control desk 1, is provided with computing machine in control system.Loading force, the torque signal of pressure transducer 12, torque sensor 7 tests reach control system.
Use thrust bearing tester of the present invention to test bearing, can come set pressure parameter and rotating speed according to the actual condition of thrust bearing, and set the highest torque parameter that thrust bearing allows in actual condition, test thrust bearing is reaching the duration of runs of the highest moment of torsion of setting first.Computer system in the control system of this thrust bearing tester can record timely moment of torsion, the duration of runs of thrust bearing under setup parameter automatically.
The present invention has realized following functions: utilize computing machine to control the operation of equipment set, the adjustment of computer control loading, rotating speed, the Real-time Collection of data, record and storage; The mechanical systems such as loading system, testing table parts and rotary drive system are carried out to Integrated design, be convenient to assembling and safeguard; Utilize variable-frequency motor that rotary power is provided, and by reductor transmitting torque, realize the stepless change of rotating speed; On the testing table parts of design, suction pit is installed, is convenient to realize the performance test of various medium centre bearers; Utilize hydraulic mechanism to provide test load for testing, realize like this test of various load in rated load; The motor sliding seat of design is conveniently realized the distance adjustment between motor and reductor, is convenient to the installation of rotating belt and the adjustment of pretightning force.
Technique scheme is one embodiment of the present invention, for those skilled in the art, the invention discloses on the basis of application process and principle, be easy to make various types of improvement or distortion, and be not limited only to the described method of the above-mentioned embodiment of the present invention, therefore previously described mode is preferably, and does not have restrictive meaning.
Claims (10)
1. a thrust bearing tester, comprises loading system [13], testing table parts [10], rotary drive system [4] and rack unit [5], it is characterized in that:
It is basic framework that described loading system [13], testing table parts [10] and rotary drive system [4] be take described rack unit [5], and mounted thereto successively by vertical order: described loading system [13] is arranged on testing table parts [10] top, rotary transmission part [4] is arranged on testing table parts [10] below;
Described testing table parts [10] are provided with on the outer wall of test head [40] ，Qi lower end and are positioned with test bearing [9], and test bearing [9] is placed in the cooling bath that heat eliminating medium is housed; Described loading system [13] is hydraulic loading system, adopts hydraulic cylinder piston formula to load, and the loading piston [24] of its hydraulic cylinder [25] vertically pressurizes to the test head of testing table parts [10] [40], and is provided with pressure transducer [12] gaging pressure; Described rotary drive system [4] is motor transmission system, adopt motor-driven, the output shaft of its reductor [57] is axially connected vertically upward and with transmission main shaft [39], transmission main shaft [39] is axially connected with test head [40], driven by motor transmission main shaft [39] rotates, thereby motoring ring test pressure head [40] rotation, and be provided with torque sensor [7] measurement moment of torsion;
Along with the loading piston [24] of hydraulic cylinder [25] is exerted pressure to test head [40], simultaneously by driven by motor test head [40] rotation, and exert pressure to test bearing [9] and drive its rotation, and utilize pressure transducer [12] and torque sensor [7] to test bearing the working order under the pressure parameter of setting, rotating speed, torque conditions test.
2. a kind of thrust bearing tester according to claim 1, is characterized in that:
Described rack unit [5] comprises frame base [6], framework soleplate [8], frame dragging plate [11], frame top board [14] and column [19]; Described frame base [6] is for having the framed structure of upper leveling board; Described framework soleplate [8], frame dragging plate [11], the flat board of frame top board [14] for being parallel to each other, wherein framework soleplate [8] is fixedly mounted on the upper leveling board of frame base [6]; Two or more columns [19] are from top to bottom successively vertically through frame top board [14], frame dragging plate [11] and framework soleplate [8], described column [19] is distributed near ，Qi lower end, dull and stereotyped Si Bian position and is fixed on the upper leveling board of described frame base [6]; Described frame top board [14] is fixed on column [19] top, and described frame dragging plate [11] is positioned between frame top board [14] and framework soleplate [8], and can be in the upper slip of column [19];
The hydraulic cylinder [25] of described loading system [13] is fixedly mounted on the frame top board [14] of rack unit [5], load piston [24] and from center, pass frame top board [14], frame dragging plate [11] is vertically pressurizeed, between the lower end of loading piston [24] and frame dragging plate [11], pressure transducer [12] is housed;
Described rotary drive system [4] is arranged on the upper leveling board below of frame base [6], the output shaft of its reductor [57] is axially connected with transmission main shaft [39] by torque sensor [7] vertically upward, transmission main shaft [39] through the upper leveling board of frame base [6] and on framework soleplate [8], framework soleplate [8] centre is a through hole, transmission main shaft [39] through its hypomere of this through hole by upper and lower two alignment bearing location and installation in framework soleplate [8] through hole; By motor, through reductor [57], drive transmission main shaft [39] rotation;
Described testing table parts [10] are positioned between frame dragging plate [11] and framework soleplate [8], comprise test base [30], test head [40]; It is a through hole that described test base [30] is fixed on described framework soleplate [8] Shang，Qi centre, coaxial with the through hole on framework soleplate [8]; Around through hole, be provided with an annular cooling bath that heat eliminating medium is housed described test base [30] is upper; Described test head [40] is the right cylinder of inner chamber hollow, coaxial with the through hole of test base [30], and its outer wall divides large, medium and small three parts with external diameter from top to bottom; It between outer radius portion and small outer-diametric portion, is wherein half the circumference of the sleeve where it joins the shoulder structure; The large outer-diametric portion of test head [40] upper end by thrust loading bearing [35] and bearing outside [38] location and installation thereof on described frame dragging plate [11] lower surface; The outer wall Shang，Qi upper surface that test bearing [9] is enclosed within test head [40] lower end small outer-diametric portion is stuck under described half the circumference of the sleeve where it joins the shoulder; The inner chamber of test head [40] hollow is divided into two sections with internal diameter difference, and its epimere is little inner-diameter portion whose, and its hypomere is large diameter part, and the internal diameter of hypomere large diameter part is greater than the outside diameter of inner ring of annular cooling bath; Described transmission main shaft [39] through the through hole of test base [30] and on annular cooling bath, when giving sliding frame dragging plate [11] pressurization, when motoring ring test pressure head [40] moves downward, when transmission main shaft [39] inserts the little inner-diameter portion whose of test head [40] inner chamber epimere from below, its epimere is connected in spline mode with test head [40] inner chamber epimere contact portion; Now the interior ring of annular cooling bath inserts test head [40] inner chamber hypomere, and the test bearing that is positioned at test head [40] lower end is immersed in heat eliminating medium; The bottom land that is against annular cooling bath is touched in the lower surface of test bearing [9], and the lower surface of test head [40] is higher than the lower surface of test bearing [9], between itself and bottom land, leaves space;
The above loads piston [24], pressure transducer [12], test head [40], test bearing [9], annular cooling bath and transmission main shaft [39] and is same axis.
3. a kind of thrust bearing tester according to claim 2, is characterized in that:
Column [19] on the upper leveling board of frame base [6] of described rack unit [5] is four, the rectangular flat that described framework soleplate [8], frame dragging plate [11], frame top board [14] are concentricity line, described column [19] is from top to bottom successively vertically through the dull and stereotyped Si Ge angle of frame top board [14], frame dragging plate [11] and framework soleplate [8].
4. a kind of thrust bearing tester according to claim 2, is characterized in that:
Loading piston [24] lower end in described loading system [3] is fixed with carrier [27], described carrier [27] and frame dragging plate [11] are upper is respectively equipped with corresponding connecting hole along periphery, by set bolt, pass the corresponding connecting hole on carrier [27] and dragging plate [11], and in frame dragging plate [11] below nut lock; Between described carrier [27] and described frame dragging plate [11], the center of carrier [27] lower surface is installed with pressure transducer [12], is used for measuring the axial downforce being loaded by hydraulic cylinder [25].
5. a kind of thrust bearing tester according to claim 2, is characterized in that:
Reductor [57] described in described rotary drive system [4] is fixing by deceleration frame [56]; Described deceleration frame [56] upper end is fixed on the lower surface of framework soleplate [8] through the upper leveling board of frame base [6], its lower end is fixed with reductor [57], torque sensor [7] is fixing by the sensor holder [50] being fixed on deceleration frame [56] side plate, and is positioned at described reductor [57] top; The output shaft [48] of described reductor [57] is coaxially connected with the lower sub [49] of described torque sensor [7], and the top connection [53] of described torque sensor [7] is coaxially connected with described transmission main shaft [39].
6. a kind of thrust bearing tester according to claim 2, is characterized in that:
In described testing table parts [10], there is annular boss at test head [40] center, upper surface, and itself and test head [40] upper surface form annular half the circumference of the sleeve where it joins the shoulder, and thrust loading bearing [35] is enclosed within on this annular half the circumference of the sleeve where it joins the shoulder; Described frame dragging plate [11] lower surface is fixed with terminal pad [36], the outer bearing outside [38] that is provided with of thrust loading bearing [35], bearing outside [38] upper end is fixedly connected with the lower surface of terminal pad [36], its lower end is provided with bearing platen test head [40] is stuck in bearing outside [38], described test head [40] by thrust loading bearing [35] and bearing outside [38] location and installation in frame dragging plate [11] below.
7. test unit according to claim 2, is characterized in that:
Annular cooling bath on test base [30] in described testing table parts [10], comprise cooling bath urceolus [31] and cooling bath inner core [41], described cooling bath urceolus [31] internal sleeve has cooling bath inner core [41], both are all coaxial with the through hole of test base [30], and the internal diameter of cooling bath inner core [41] is more than or equal to through-hole aperture; Cooling bath urceolus [31] and cooling bath inner core [41] lower end are all fixedly mounted on described test base [30], cooling bath urceolus [31] and cooling bath inner core [41] form annular cooling bath with test base [30] upper surface between the two, and heat eliminating medium [32] is wherein housed.
8. test unit according to claim 7, is characterized in that:
On described test base [30] upper surface, around the periphery of cooling bath inner core [41], be provided with circular orientation groove [63], the Primary Location for test bearing [9] on test base [30].
9. according to the test unit described in any one of claim 1～8, it is characterized in that:
Described test unit comprises control system; In described loading system [13], with the electrical system of providing the hydraulic power unit [3] of hydraulic pressure to be connected to hydraulic cylinder [25], and described pressure transducer [12] is connected with control system, by control system, carrys out Control experiment pressure; Motor in described rotary drive system [4] and torque sensor [7] are connected with control system, by control system, carry out Control experiment rotating speed.
10. test unit according to claim 9, is characterized in that:
Described control system comprises computer system, realizes the automatic control to test unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910236771.XA CN102053015B (en) | 2009-10-30 | 2009-10-30 | Tester for thrust bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910236771.XA CN102053015B (en) | 2009-10-30 | 2009-10-30 | Tester for thrust bearing |
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| CN102053015A CN102053015A (en) | 2011-05-11 |
| CN102053015B true CN102053015B (en) | 2014-01-15 |
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