CN103852257A - Shafting experiment bench adopting automatic self-aligning bearing - Google Patents
Shafting experiment bench adopting automatic self-aligning bearing Download PDFInfo
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- CN103852257A CN103852257A CN201410106881.5A CN201410106881A CN103852257A CN 103852257 A CN103852257 A CN 103852257A CN 201410106881 A CN201410106881 A CN 201410106881A CN 103852257 A CN103852257 A CN 103852257A
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Abstract
The invention discloses a shafting experiment bench adopting an automatic self-aligning bearing, belongs to a ship shafting experiment bench, and solves the problems that the assembly and disassembly of a stern bearing of an existing ship shafting experiment bench are difficult and the operation is inconvenient. The shafting experiment bench provided by the invention comprises a motor, a gear box, a middle bearing, the stern bearing and a frequency converter, wherein the stern bearing is composed of a shaft sleeve, a bearing bush and multiple key strips; the shaft sleeve is composed of an upper-half shaft sleeve and a lower-half shaft sleeve which have the same shape, and the semicircle surfaces of the upper-half shaft sleeve and the lower-half shaft sleeve are provided with axial upper through grooves; the bearing bush is composed of a barrel and a flange disc which are integrated, the inner wall of the barrel is provided with three annular cavities, and the outer wall of the barrel is provided with an axial key groove for containing the key strips; the key strips comprise rigid key strips and elastic key strips, which are used for simulating rigid support working conditions and elastic support working conditions respectively. The shafting experiment bench provided by the invention has the advantages that the structure is simple, the assembly and disassembly are convenient, the conversion between the self-aligning stern bearing and a common rigid bearing is simply and rapidly realized, and contrast test research of static and dynamic characteristics of shafting under two different support working conditions is realized.
Description
Technical field
The invention belongs to marine shafting experimental stand, be specifically related to a kind of shafting test bed frame that adopts self-aligning bearing.
Background technology
Marine shafting test-bed is that research axle is the important lab setup of quiet dynamic perfromance, conventionally formed by parts such as frequency converter, motor, gear case, shaft coupling, intermediate bearing, stern bearing and frequency converters, when experiment, the axle head that axle to be tested is is connected with shaft coupling, the shaft part that axle to be tested is passes and is supported by intermediate bearing, stern bearing, and wait testing, axle system is unsettled through the shaft part after stern bearing; Different with physical condition according to experiment demand, its design parameter is different.In the time that motor is not inputted energy, can be by corresponding experimental technique and sensor measurement means, obtain the static properties parameter of axle system; When motor input energy, realize arbor interlock, can pass through sensor measurement means, obtain the dynamic performance parameter of axle system, thereby realize in a certain range of speeds, under a certain operating mode, the quiet dynamic characteristic experiment research of axle system.
There is a class marine shafting test-bed, adopt self-aligning bearing at stern bearing place, utilize the compensation of self-aligning bearing to displacement and angle, and then improve the performance that whole axle is.
As shown in Figure 1, traditional automatic aligning ball bearing, is made up of axle sleeve 41, bearing shell 42, the several parts of retainer 44 that are embedded with steel ball, and axle sleeve spherical raceway central point is consistent with bearing center point, and bearing shell has biserial raceway.When rotation, steel ball, retainer, bearing shell can be made free inclination to a certain degree for axle sleeve axle, there is self-aligning function, therefore, can adjustable axle and bearing housing because of the desaxe that processing, Rig up error produce, can give certain angle compensation and less bit shift compensation.But this automatic aligning ball bearing axial load is limited in one's ability, is not suitable for the occasion that axial load is large; Meanwhile, its watertightness is not good, requires higher occasion for watertightness, such as marine shafting stern bearing place, conventionally not too applicable.
On this basis, there is a kind of new type auto self-aligning bearing, its structure as shown in Figure 2, this kind of new type auto self-aligning bearing arranges rubber layer 45 and replaces the retainer that is originally embedded with steel ball between axle sleeve 41 and bearing shell 42, because the rigidity of rubber layer is less, when axle is due to processing, Rig up error or there is desaxe under load time, rubber layer can give certain angle compensation.In addition, owing to thering is larger frictional resistance between rubber and axial sleeve of bushing, can bear certain axial load, give certain bit shift compensation.Meanwhile, rubber layer has preferably watertightness, is applicable to the occasion that watertightness is had relatively high expectations.
But, no matter be traditional automatic aligning ball bearing, or new type auto self-aligning bearing, after being applied on shafting test bed frame, all there is handling difficulty, unhandy shortcoming, especially in the time needing to carry out contrast experiment in experiment, it is more obvious that this defect just seems.
Summary of the invention
The invention provides a kind of shafting test bed frame that adopts self-aligning bearing, solve system test-bed stern bearing handling difficulty of spot ship axle, unhandy problem.
A kind of shafting test bed frame that adopts self-aligning bearing provided by the present invention, comprise motor, gear case, intermediate bearing, stern bearing and frequency converter, motor, gear case, intermediate bearing and stern bearing are successively respectively by pedestal and being bolted on ground, power supply is motor power supply by frequency converter, motor shaft is connected with the input shaft of gear case by the first shaft coupling, the output shaft of gear case is connected with the second shaft coupling, when experiment, the axle head that axle to be tested is connects described the second shaft coupling, the shaft part of axle to be tested system through and by intermediate bearing, stern bearing supports, wait testing, axle system is unsettled through the shaft part after stern bearing, it is characterized in that:
Described stern bearing is made up of axle sleeve, bearing shell and Duo Gen key bar, described axle sleeve is made up of the identical upper half-axile sleeve of shape and lower half-axile sleeve, the inwall of the inwall of upper half-axile sleeve and lower half-axile sleeve is semicircle cambered surface separately, on upper half-axile sleeve semi arch face, there is N bar and axially go up groove, in the semicircle cambered surface of lower half-axile sleeve, there is M bar and axially descend groove, N >=M > 1;
Described bearing shell is made up of cylindrical shell and the ring flange of one, and described cylindrical shell is cylindrical shape, and described ring flange is positioned at cylindrical shell left part; Described cylinder inboard wall has three road annular cavities: left end annular cavity and right-hand member annular cavity are respectively used to embed oil sealing felt collar, and intermediate annular cavity is used for holding lubricating oil; The barrel of described cylindrical shell has the oil passage that is communicated with ring flange end face and described intermediate annular cavity; Described cylinder body outer wall has N+M bar axial keyway, and its position and N bar axially go up groove and M bar axially descends groove position correspondence, for holding described key bar; The external diameter of described cylindrical shell is less than the arc radius of half-axile sleeve and lower half-axile sleeve semi arch face, so that bearing shell and axle sleeve clearance fit;
Described key bar comprises N+M root rigid key bar and N+M root elastic key bar, respectively in order to simulate rigid support operating mode and resiliency supported operating mode;
When assembling, N+M root rigid key bar or N+M root elastic key bar are all inserted after axial keyway, the cylindrical shell of bearing shell is placed in the semicircle cambered surface of lower half-axile sleeve, upper half-axile sleeve is connected with pedestal by bolt with lower half-axile sleeve, integrant axle sleeve, two semicircle cambered surfaces form manhole, cylindrical shell is positioned at manhole, N root rigid key bar or elastic key bar upper, lower surface respectively with axially upper groove and axial keyway bottom surface close contact described in N bar, M root rigid key bar or elastic key bar upper, lower surface respectively with axially lower groove and axial keyway bottom surface close contact described in M bar.
Described axially upper groove, axially to descend the xsect of groove and axial keyway can be isosceles trapezoid;
Described rigid key bar is identical with the xsect of elastic key bar, and the isosceles trapezoid xsect after all combining with described axially upper groove and axial keyway and the isosceles trapezoid xsect after described axial lower groove and axial keyway combination match.
The end face that the end face of described upper half-axile sleeve can have upper screw or lower half-axile sleeve can have lower screw; On the ring flange of described bearing shell, there is through hole, in the time that bearing shell packs axle sleeve into, the position of described through hole is corresponding with the position of upper screw or lower screw, adopts the bolt being connected with upper screw through through hole, or adopt the bolt being connected with lower screw through through hole, restriction bearing shell is with respect to axle sleeve axial float.
Described rigid key bar can adopt steel to make, and described elastic key bar can adopt elastomeric material to make.
The present invention is directed to system test-bed stern bearing handling difficulty of existing axle, unhandy defect, stern bearing is improved, being different from plain bearing supports, for the ease of installation and removal, the present invention has carried out subdivision design to axle sleeve, formed by the identical upper half-axile sleeve of shape and lower half-axile sleeve, upper, on lower half-axile sleeve and bearing shell, all have axial keyway, between bearing shell and axle sleeve, connect by key bar, the number of key bar can be determined according to the rigidity requirement of supporting and machining precision restriction, position except key bar connects, (gap length can be determined according to actual needs between bearing shell and axle sleeve, to maintain certain gap, as 3mm).Bearing shell inwall has three road annular cavities, is respectively used to embed oil sealing felt collar and holds lubricating oil, has ensured the lubricated and sealing of bearing.Between the ring flange and upper and lower half-axile sleeve of bearing shell end, be designed with the bolt of restriction bearing shell axial float.By such design, ensure the normal work of bearing.
Key bar of the present invention is divided into two kinds of rigid key bar and elastic key bars, and respectively in order to simulate rigid support operating mode and resiliency supported operating mode, handling are simple, simple operation.In the time adopting rigid key bar to be connected between bearing shell and axle sleeve, can regard rigid support condition as, under this operating mode, carry out the experiment of axle system; In the time adopting elastic key bar to be connected between bearing shell and axle sleeve, can regard resiliency supported condition as, owing to maintaining certain gap between bearing shell and axle sleeve, add the elastic reaction of elastic key bar, stern bearing place has possessed self-aligning function, makes under this operating mode, and stern bearing can be thought the supporting of automatic aligning stern bearing, under this operating mode, carry out the experiment of axle system, can carry out corresponding research to the quiet dynamic perfromance of automatic aligning stern bearing supporting lower shaft system; While is quiet dynamic perfromance with the axle under non-yielding prop condition, carries out control experiment, carries out self-aligning bearing performance study thereby realize on test-bed.
The present invention is simple in structure, easy to loading and unloading, overcome system test-bed stern bearing handling difficulty of existing axle, unhandy problem, can realize quickly and easily the conversion of automatic aligning stern bearing and common rigid bearing, realize axle and tie up to the quiet dynamic perfromance comparative experimental research under the support of rigidity stern bearing and two kinds of different operating modes of automatic aligning stern bearing resiliency supported, there is good experiment effect.
Brief description of the drawings
Fig. 1 is traditional automatic aligning ball bearing structure schematic diagram;
Fig. 2 is new type auto self-aligning bearing structural representation;
Fig. 3 is embodiments of the invention structural representation;
Fig. 4 is stern bearing structural representation of the present invention;
Fig. 5 is bearing bush structure schematic diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 3, embodiments of the invention, comprise motor 10, gear case 20, intermediate bearing 30, stern bearing 40 and frequency converter 60, motor 10, gear case 20, intermediate bearing 30 and stern bearing 40 are successively respectively by pedestal 50 be bolted on ground, power supply is powered for motor 10 by frequency converter 60, motor shaft is connected with the input shaft of gear case 20 by the first shaft coupling 70, the output shaft of gear case 20 is connected with the second shaft coupling 80, when experiment, the axle head that axle to be tested is connects described the second shaft coupling 80, the shaft part of axle to be tested system through and by intermediate bearing 30, stern bearing 40 supports, wait testing, axle system is unsettled through the shaft part after stern bearing 40,
As shown in Figure 4, described stern bearing 40 is made up of axle sleeve 41, bearing shell 42 and Duo Gen key bar 43, described axle sleeve 41 is made up of the identical upper half-axile sleeve 41-1 of shape and lower half-axile sleeve 41-2, the inwall of the inwall of upper half-axile sleeve 41-1 and lower half-axile sleeve 41-2 is semicircle cambered surface separately, in the present embodiment, in the semicircle cambered surface of upper half-axile sleeve 41-1, there are 3 axially upper groove 41-1A, radially respectively at 45 ° with surface level, 90 °, 135 °; In the semicircle cambered surface of lower half-axile sleeve 41-2, there are 2 axially lower groove 41-2A, radially become respectively 60 °, 120 ° with surface level.
As shown in Figure 5, described bearing shell 42 is made up of cylindrical shell 42-1 and the ring flange 42-2 of one, and described cylindrical shell 42-1 is cylindrical shape, and described ring flange 42-2 is positioned at cylindrical shell 42-1 left part; Described cylindrical shell 42-1 inwall has three road annular cavities: left end annular cavity 42-1A and right-hand member annular cavity 42-1C are respectively used to embed oil sealing felt collar, and intermediate annular cavity 42-1B is used for holding lubricating oil; The barrel of described cylindrical shell 42-1 has the oil passage 42-1D that is communicated with ring flange 42-2 end face and described intermediate annular cavity 42-1B; Described cylindrical shell 42-1 outer wall has 5 axial keyway 42-1E, and its position and 3 axially upper groove 41-1A and 2 axially lower groove 41-2A position correspondences, for holding described key bar 43; The external diameter of described cylindrical shell 42-1 is less than the arc radius of the semicircle cambered surface of half-axile sleeve 41-1 and lower half-axile sleeve 41-2, so that bearing shell 42 and axle sleeve 41 clearance fit;
Described key bar 43 comprises 5 rigid key bars and 5 elastic key bars, respectively in order to simulate rigid support operating mode and resiliency supported operating mode;
When assembling, 5 rigid key bars or 5 elastic key bars are all inserted after axial keyway 42-1E, the cylindrical shell 42-1 of bearing shell 42 is placed in the semicircle cambered surface of lower half-axile sleeve 41-2, upper half-axile sleeve 41-1 is connected with pedestal by bolt with lower half-axile sleeve 41-2, integrant axle sleeve, two semicircle cambered surfaces form manhole, cylindrical shell 42-1 is positioned at manhole, 3 rigid key bars or elastic key bar upper, lower surface respectively with 3 described axially upper groove 41-1A and axial keyway 42-1E bottom surface close contacts, 2 rigid key bars or elastic key bar upper, lower surface respectively with 2 described axial lower groove 41-2A and axial keyway 42-1E bottom surface close contact.
In the present embodiment, described axially upper groove 41-1A, axially to descend the xsect of groove 41-2A and axial keyway 42-1E be isosceles trapezoid;
Described rigid key bar is identical with the xsect of elastic key bar, and the isosceles trapezoid xsect after all combining with described axially upper groove 41-1A and axial keyway 42-1E and the isosceles trapezoid xsect after described axial lower groove 41-2A and axial keyway 42-1E combination match.
In the present embodiment, the end face of described upper half-axile sleeve 41-1 has upper screw 41-1B; On the ring flange 42-2 of described bearing shell 42, there is through hole 42-2A, in the time that bearing shell packs axle sleeve into, the position of described through hole 42-2A is corresponding with the position of upper screw 41-1B, adopts the bolt being connected with upper screw 41-1B through through hole 42-2A, and restriction bearing shell 42 is with respect to axle sleeve 41 axial floats.
In the present embodiment, described rigid key strip adoption steel are made, and described elastic key strip adoption elastomeric material is made, and selects the V-type balata belt of certain standard model segmentation to intercept as elastic key bar; The length of rigid key bar and elastic key bar matches with described axial keyway 42-1E.
In the present embodiment, motor 10 is selected nominal power 3KW, and synchronous rotational speed is 0～1500rpm frequency control motor; Gear case 20 is selected cylinder gear speed reducer, and reduction gear ratio is 1: 3.15; Intermediate bearing 30 is selected rolling intermediate shaft bearing peculiar to vessel; Frequency converter 60 type selectings are mated with motor, and rated power is 3KW; Pedestal 50 the selection of material Q235A; The first shaft coupling 70 and the second shaft coupling 80 are selected spring coupling; The overall dimension of test-bed: length × wide × height=2779mm × 430mm × 600mm, gross weight 416.3Kg.
Carrying out axle when experiment system, can be according to actual experiment needs, fasten placement sensor and obtain the collection of data at axle.Stern bearing place, selects rigid key bar to connect or the connection of elastic key bar according to requirement of experiment, in the time changing key bar, can first axle be supported, and then exits to the left bearing shell, completes the replacing of key bar, simple and convenient, easy operating.
Claims (4)
1. one kind adopts the shafting test bed frame of self-aligning bearing, comprise motor (10), gear case (20), intermediate bearing (30), stern bearing (40) and frequency converter (60), motor (10), gear case (20), intermediate bearing (30) and stern bearing (40) are successively respectively by pedestal (50) be bolted on ground, by frequency converter, (60 is motor (10) power supply to power supply, motor shaft is connected with the input shaft of gear case (20) by the first shaft coupling (70), the output shaft of gear case (20) is connected with the second shaft coupling (80), when experiment, the axle head that axle to be tested is connects described the second shaft coupling (80), the shaft part of axle to be tested system through and by intermediate bearing (30, (40 support stern bearing, wait testing, axle system is unsettled through the shaft part after stern bearing (40), it is characterized in that:
Described stern bearing (40) is by axle sleeve (41), bearing shell (42) and many key bars (43) form, described axle sleeve (41) is made up of the identical upper half-axile sleeve (41-1) of shape and lower half-axile sleeve (41-2), the inwall of the inwall of upper half-axile sleeve (41-1) and lower half-axile sleeve (41-2) is semicircle cambered surface separately, in the semicircle cambered surface of upper half-axile sleeve (41-1), there is N bar and axially go up groove (41-1A), in the semicircle cambered surface of lower half-axile sleeve (41-2), there is M bar and axially descend groove (41-2A), N >=M > 1,
Described bearing shell (42) is made up of cylindrical shell (42-1) and the ring flange (42-2) of one, described cylindrical shell (42-1) is cylindrical shape, and described ring flange (42-2) is positioned at cylindrical shell (42-1) left part; Described cylindrical shell (42-1) inwall has three road annular cavities: left end annular cavity (42-1A) and right-hand member annular cavity (42-1C) are respectively used to embed oil sealing felt collar, and (42-1B is used for holding lubricating oil to intermediate annular cavity; The barrel of described cylindrical shell (42-1) has the oil passage (42-1D) that is communicated with ring flange (42-2) end face and described intermediate annular cavity (42-1B); Described cylindrical shell (42-1) outer wall has N+M bar axial keyway (42-1E), its position and N bar axially go up groove (41-1A) and M bar axially descends groove (41-2A) position correspondence, for holding described key bar (43); The external diameter of described cylindrical shell (42-1) is less than the arc radius of the semicircle cambered surface of half-axile sleeve (41-1) and lower half-axile sleeve (41-2), so that bearing shell (42) and axle sleeve (41) clearance fit;
Described key bar (43) comprises N+M root rigid key bar and N+M root elastic key bar, respectively in order to simulate rigid support operating mode and resiliency supported operating mode;
When assembling, N+M root rigid key bar or N+M root elastic key bar are all inserted after axial keyway (42-1E), the cylindrical shell (42-1) of bearing shell (42) is placed in the semicircle cambered surface of lower half-axile sleeve (41-2), upper half-axile sleeve (41-1) is connected with pedestal by bolt with lower half-axile sleeve (41-2), integrant axle sleeve, two semicircle cambered surfaces form manhole, cylindrical shell (42-1) is positioned at manhole, N root rigid key bar or elastic key bar upper, lower surface respectively with axially upper groove (41-1A) and axial keyway (42-1E) bottom surface close contact described in N bar, M root rigid key bar or elastic key bar upper, lower surface respectively with axially lower groove (41-2A) and axial keyway (42-1E) bottom surface close contact described in M bar.
2. shafting test bed frame as claimed in claim 1, is characterized in that:
Described axially upper groove (41-1A), axially to descend the xsect of groove (41-2A) and axial keyway (42-1E) be isosceles trapezoid;
Described rigid key bar is identical with the xsect of elastic key bar, and the isosceles trapezoid xsect after all combining with described axially upper groove (41-1A) and axial keyway (42-1E) and the isosceles trapezoid xsect after described axial lower groove (41-2A) and axial keyway (42-1E) combination match.
3. shafting test bed frame as claimed in claim 1 or 2, is characterized in that:
The end face that the end face of described upper half-axile sleeve (41-1) has upper screw or lower half-axile sleeve (41-2) has lower screw; On the ring flange (42-2) of described bearing shell (42), there is through hole (42-2A), in the time that bearing shell packs axle sleeve into, the position of described through hole (42-2A) is corresponding with the position of upper screw or lower screw, adopt the bolt being connected with upper screw through through hole (42-2A), or adopt the bolt being connected with lower screw through through hole (42-2A), restriction bearing shell (42) is with respect to axle sleeve (41) axial float.
4. shafting test bed frame as claimed in claim 3, is characterized in that:
Described rigid key strip adoption steel are made, and described elastic key strip adoption elastomeric material is made.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410106881.5A CN103852257B (en) | 2014-03-21 | 2014-03-21 | A kind of shafting test bed frame adopting self-aligning bearing |
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| CN201410106881.5A CN103852257B (en) | 2014-03-21 | 2014-03-21 | A kind of shafting test bed frame adopting self-aligning bearing |
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| CN103852257B CN103852257B (en) | 2016-04-13 |
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Cited By (2)
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| CN106644795A (en) * | 2016-09-23 | 2017-05-10 | 上海交通大学 | Testing machine for abrasive wear test of bearing bush |
| CN114726155A (en) * | 2022-05-13 | 2022-07-08 | 哈尔滨工程大学 | Multifunctional flywheel energy storage and braking system of low-speed machine bearing bush test platform machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106644795A (en) * | 2016-09-23 | 2017-05-10 | 上海交通大学 | Testing machine for abrasive wear test of bearing bush |
| CN114726155A (en) * | 2022-05-13 | 2022-07-08 | 哈尔滨工程大学 | Multifunctional flywheel energy storage and braking system of low-speed machine bearing bush test platform machine |
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| Publication number | Publication date |
|---|---|
| CN103852257B (en) | 2016-04-13 |
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