CN116398548B - High-speed overlength axle and bearing structure thereof - Google Patents
High-speed overlength axle and bearing structure thereof Download PDFInfo
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- CN116398548B CN116398548B CN202310666672.5A CN202310666672A CN116398548B CN 116398548 B CN116398548 B CN 116398548B CN 202310666672 A CN202310666672 A CN 202310666672A CN 116398548 B CN116398548 B CN 116398548B
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- 238000012360 testing method Methods 0.000 claims abstract description 31
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 22
- 238000006073 displacement reaction Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 abstract description 19
- 238000012545 processing Methods 0.000 abstract description 16
- 238000013461 design Methods 0.000 abstract description 7
- 210000005056 cell body Anatomy 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
- F16D1/04—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with clamping hub; with hub and longitudinal key
- F16D1/05—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Details Of Gearings (AREA)
Abstract
A high-speed ultra-long shaft and a supporting structure thereof relate to the field of shafting support. The invention aims to solve the problems that the existing high-speed ultra-long shaft section is high in processing cost and the assembly precision is difficult to meet the design requirement. The first ultra-long shaft system is horizontally arranged in the test gear box in a penetrating way, the flange is arranged on the left end part of the first ultra-long shaft system, and the first bearing and the first tilting pad bearing are respectively sleeved on the first ultra-long shaft system; the second ultra-long shaft system is horizontally arranged in the accompanying gear box in a penetrating way, and the second tilting pad bearing is sleeved on the second ultra-long shaft system; the left end part of the second ultra-long shafting is coaxially connected with the right end part of the first ultra-long shafting; the first ultra-long shafting comprises a clamping groove body, a clamping assembly and a plurality of shaft sections, wherein the shaft sections are sequentially connected with the clamping assembly in an expanding manner from left to right. The invention is used in a back-to-back test platform of a planetary gear transmission device.
Description
Technical Field
The invention relates to a supporting structure, in particular to a high-speed ultra-long shaft and a supporting structure thereof, which are used for a full-rotation-speed full-load test of a planetary gear box and belong to the technical field of shafting support.
Background
Gear transmission is an important transmission form for transmitting power, and plays an important role in the fields of automobiles, ships, aerospace, aviation and the like. The planetary gear transmission has the characteristics of coaxial input and output, power split, small volume, light weight, large speed ratio and the like, and has been widely used.
With the development of technology and the increase of the demands for use, gear drives are being developed towards high power and high rotational speeds, and very long drive shafts of up to several meters or even more than ten meters are often present in the design and testing of gear drives. In order to reduce the problems of bending, deformation and the like in the processing process, the ultra-long transmission shaft is generally divided into a plurality of sections of shafts for processing, and the divided shaft sections are greatly reduced in length, so that the processing difficulty of the shaft sections is reduced, and the processing precision of the shaft sections is also easier to ensure.
However, the spline is adopted between the two adjacent shaft sections for connection, and the connection mode is convenient for connection and can also ensure the transmission of larger torque, but the processing of the spline and the spline groove requires special equipment for processing, so that the processing cost is high. In addition, the ultra-long shaft is assembled section by section, so that the accumulated assembly errors are gradually increased in the assembly process, and the assembly precision is difficult to meet the design requirement.
In summary, the existing high-speed ultra-long shaft section has the problems of high processing cost and difficult design requirement of assembly precision.
Disclosure of Invention
The invention aims to solve the problems that the existing high-speed ultra-long shaft section is high in processing cost and the assembly precision is difficult to meet the design requirement. Further provides a high-speed overlength shaft and a supporting structure thereof.
The technical scheme of the invention is as follows: the high-speed ultra-long shaft and the supporting structure thereof comprise a flange, and further comprise a first bearing, a second bearing, a first tilting-pad bearing, a second tilting-pad bearing, a first ultra-long shaft system and a second ultra-long shaft system; the first ultra-long shaft system is horizontally arranged in the test gear box in a penetrating way, two ends of the first ultra-long shaft system penetrate through two ends of the test gear box in the length direction, the flange is arranged on the left end part of the first ultra-long shaft system positioned outside the test gear box, the first bearing and the first tilting pad bearing are respectively sleeved on the first ultra-long shaft system, and the first bearing and the first tilting pad bearing are fixedly arranged on the left inner side wall and the right inner side wall of the test gear box; the second ultra-long shaft system is horizontally arranged in the accompanying gear box in a penetrating mode, two ends of the second ultra-long shaft system penetrate through two ends of the accompanying gear box in the length direction, the second tilting pad bearing is sleeved on the second ultra-long shaft system, and the second tilting pad bearing is fixedly arranged on the left side wall in the accompanying gear box; the left end part of the second ultra-long shafting is coaxially connected with the right end part of the first ultra-long shafting; the first ultra-long shafting and the second ultra-long shafting have the same structure, the first ultra-long shafting comprises a clamping groove body, a clamping assembly and a plurality of shaft sections, and the shaft sections are sequentially connected in an expanding manner from left to right through the clamping groove body and the clamping assembly; the left shaft section of the two adjacent shaft sections is a left shaft component, an axial positioning bulge is processed on the right end face of the left shaft component, the right shaft section of the two adjacent shaft sections is a right shaft component, and an axial positioning groove is processed on the left end face of the right shaft component; the clamping groove body is sleeved on the axial positioning bulge, the clamping assembly is embedded in the axial positioning groove, the right shaft part is sleeved on the clamping groove body and clamps the clamping groove body and the axial positioning bulge through the axial displacement provided by the clamping assembly, and the clamping groove body generates radial displacement under the axial pushing action of the clamping assembly and is in expansion connection with the axial positioning groove; the second bearing is sleeved on the right shaft component, and the second bearing is fixedly arranged on the test gear box.
Further, the clamping groove body is a cylindrical groove body with an inverted cone-shaped groove, a plurality of strip-shaped holes are formed in the cylindrical groove body along the axis direction of the cylindrical groove body, and a positioning pin is arranged at the center of the bottom end face of the clamping groove body.
Further, the clamping assembly comprises a left clamping unit, a right clamping unit and a clamping moving block, the left clamping unit and the right clamping unit are arranged in the axial positioning groove left and right in the axial direction, the right clamping unit abuts against the bottom end face of the axial positioning groove, inclined planes are machined on the opposite sides of the left clamping unit and the right clamping unit, the inclined planes of the left clamping unit and the inclined planes of the right clamping unit form an inverted cone-shaped space, the clamping moving block is slidably mounted in the inverted cone-shaped space, and the outer side walls of the clamping moving block are respectively contacted with the inclined planes of the left clamping unit and the inclined planes of the right clamping unit.
Further, the left clamping unit and the right clamping unit comprise two semicircular arc clamping blocks, the two semicircular arc clamping blocks are radially arranged in the same vertical plane, a gap is reserved between the two semicircular arc clamping blocks, and a locating pin on the clamping groove body is inserted into the gap to achieve locating.
Further, a disassembly hole is formed in the radial direction of the right shaft component, and the disassembly hole is communicated with an inverted conical space formed between the left clamping unit and the right clamping unit.
Furthermore, the first ultra-long shafting further comprises a hydraulic oil pump dismounting device, and the hydraulic oil pump dismounting device is sealed and sleeved on the outer side wall of the joint of the two adjacent shaft sections; the hydraulic oil pump dismounting device comprises a hydraulic oil pipe, an upper semi-annular cover, a lower semi-annular cover and a lock catch, wherein the upper semi-annular cover and the lower semi-annular cover are buckled to form a circular cover body, one ends of the upper semi-annular cover and the lower semi-annular cover are rotatably connected, the hydraulic oil pipe is connected with the rotatable connection side, and the other ends of the upper semi-annular cover and the lower semi-annular cover are connected through the lock catch.
Preferably, the annular nozzle is machined on the inner side wall of the annular cover body.
Still further, the first ultra-long shafting further comprises a mechanical dismounting device which is embedded in the left shaft component and extends to the side of the axial positioning bulge until the mechanical dismounting device extends out to push down the clamping groove body, wherein the mechanical dismounting device comprises a screw rod, a dismounting nut, a driven bevel gear, a driving bevel gear, a wheel shaft and an end cover, the screw rod is horizontally and rotatably arranged in an axial port of the shaft section along the axial direction of the shaft section, the wheel shaft is vertically and rotatably arranged in a vertical port of the shaft section along the radial direction of the shaft section, and the axial port is communicated with the vertical port; the driving bevel gear is sleeved on the wheel shaft, the driven bevel gear is sleeved on the head of the screw rod, the driving bevel gear is meshed with the driven bevel gear, the dismounting nut is sleeved on the tail of the screw rod, and the end cover is arranged on the vertical opening.
Still further, mechanical dismounting device still includes bearing frame, the shaft fixing base, shaft mount pad and screw rod aligning seat, the bearing frame is coaxial and install on the axis in the axial mouth of left side axle component, the screw rod aligning seat is installed in the axial mouth and is arranged with left side axle component coaxial line, the head cartridge of screw rod is on the bearing frame, the middle part of screw rod passes through the bearing and rotates and install in the screw rod aligning seat, the afterbody of screw rod is equipped with the external screw thread, form nut screw rod pair with the dismantlement nut cooperation, set up the guide way on the dismantlement nut, be equipped with the location arch on the protruding inside wall of axial location in the axial mouth on the left side axle component, the location arch slides and sets up in the guide way, shaft mount pad fixed mounting is in vertical mouth, the shaft rotates the cartridge on the shaft mount pad, the upper portion of shaft passes through the bearing and is located the shaft fixing base suit of vertical mouth for limiting the axiality of shaft.
Preferably, the first bearing and the second bearing are both split structures.
Compared with the prior art, the invention has the following effects:
1. the support structure is used for supporting the long shaft of the high-speed high-power gear transmission device, is particularly suitable for supporting the long shaft between the test gear box and the high-speed end of the accompanying test gear box in the back-to-back test platform of the planetary gear transmission device, is of great importance to the stable operation of the high-speed gear transmission device, and the support structure is supported by arranging corresponding bearings at different positions in the test gear box.
2. The ultra-long shaft system is formed by connecting multiple sections of shafts, and the adjacent two shaft sections are connected into a whole through the cooperation of the clamping groove body and the clamping assembly. The axial positioning bulge and the axial positioning groove are directly machined when the shaft section is machined without using special equipment, so that the machining difficulty is reduced, the machining procedures are reduced, and the production cost of the ultra-long shaft system is further effectively reduced.
In addition, after the clamping groove body and the clamping component are connected, the outer diameters of two adjacent shaft sections are the same, transmission parts such as a bearing or a gear are not influenced on the torsion shaft in a sleeved mode, the connection mode is reliable in connection, and when the rotating speed of the torsion shaft is above 3500r/m in the test process of the torsion shaft, large torque transmission is not influenced, so that the ultra-long shaft system can meet the requirement of actual use working conditions on the premise of reducing the production cost.
3. In the assembly process of the ultra-long shafting, the coaxiality is ensured: two modes are adopted to realize accurate positioning: (1) The clamping groove 6 is provided with a positioning pin on the bottom end face, and the positioning pin is inserted into the clamping assembly 7 during assembly. (2) The coaxiality of the axial positioning protrusion 9 and the axial positioning groove 10 during processing is ensured. In terms of axial compensation: the invention is realized by the fastening degree of the axial positioning groove 10 inserted on the clamping groove body 6. In terms of power transmission: the invention is realized by the friction force after clamping between the axial positioning groove 10 and the clamping groove body 6. In conclusion, the invention can carry out corresponding fine adjustment parameters in the assembly process, thereby reducing accumulated assembly errors.
The invention also provides a disassembly and assembly mode between two adjacent shaft sections, which is respectively applicable to the conditions of different shaft diameters and has wide application range.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an exploded schematic view of two adjacent shaft segments 8 before assembly when the hydraulic oil pump dismounting device (scheme one) is adopted, wherein arrows pointing to the upper side and the lower side indicate the directions of radial displacement of the clamping groove body under the axial pushing action of the clamping assembly; the two arrows pointing to the left in fig. 2 represent the axial pushing direction of the clamping assembly;
FIG. 3 is a schematic view of FIG. 2 assembled, with the direction of the arrows indicating the direction of flow of high pressure oil;
fig. 4 is a schematic structural view of the clamping assembly 7, wherein the arrow pointing to the left indicates the axial movement direction of the left clamping unit; the arrow pointing downwards indicates the direction of movement of the clamping moving block when it is subjected to a radial force;
fig. 5 is a schematic structural view of the holding tank 6;
fig. 6 is a schematic structural view of the left clamping unit 12 or the right clamping unit 13;
FIG. 7 is a schematic front view of a hydraulic oil pump removal device;
fig. 8 is an exploded view of two adjacent shaft segments 8 before assembly when the mechanical dismounting device (second embodiment) is adopted, wherein arrows pointing to the upper side and the lower side indicate the direction of radial displacement of the clamping groove body under the axial pushing action of the clamping assembly; the two arrows pointing to the left in fig. 8 represent the axial pushing direction of the clamping assembly;
FIG. 9 is a schematic view of the assembled FIG. 8;
FIG. 10 is an enlarged view of the shaft section 8, wherein the arrows pointing up and down indicate the direction of radial displacement of the clamping groove under the axial pushing action of the clamping assembly;
fig. 11 is a cross-sectional view taken along A-A of fig. 10.
Detailed Description
The first embodiment is as follows: referring to fig. 1 to 11, a high-speed overlength shaft and a support structure thereof according to the present embodiment include a flange 1, which further includes a first bearing 2, a second bearing 3, a first tilting-pad bearing 4, a second tilting-pad bearing 5, a first overlength shaft system 34, and a second overlength shaft system 35; the first ultra-long shaft system 34 is horizontally arranged in the test gear box 32 in a penetrating way, two ends of the first ultra-long shaft system 34 penetrate through two ends of the test gear box 32 in the length direction, the flange 1 is arranged on the left end part of the first ultra-long shaft system 34 positioned outside the test gear box 32, the first bearing 2 and the first tilting pad bearing 4 are respectively sleeved on the first ultra-long shaft system 34, and the first bearing 2 and the first tilting pad bearing 4 are fixedly arranged on the left inner side wall and the right inner side wall of the test gear box 32; the second ultra-long shaft system 35 horizontally penetrates through the accompanying gear box 33, two ends of the second ultra-long shaft system 35 penetrate through two ends of the accompanying gear box 33 in the length direction, the second tilting pad bearing 5 is sleeved on the second ultra-long shaft system 35, and the second tilting pad bearing 5 is fixedly arranged on the left side wall in the accompanying gear box 33; the left end part of the second ultra-long shafting 35 is coaxially connected with the right end part of the first ultra-long shafting 34; the first ultra-long shafting 34 and the second ultra-long shafting 35 have the same structure, the first ultra-long shafting 34 comprises a clamping groove body 6, a clamping assembly 7 and a plurality of shaft sections 8, and the shaft sections 8 are sequentially connected in an expanding manner from left to right through the clamping groove body 6 and the clamping assembly 7;
the left shaft section 8 of the two adjacent shaft sections 8 is a left shaft component, an axial positioning protrusion 9 is processed on the right end face of the left shaft component, the right shaft section 8 of the two adjacent shaft sections 8 is a right shaft component, and an axial positioning groove 10 is processed on the left end face of the right shaft component; the clamping groove body 6 is sleeved on the axial positioning bulge 9, the clamping assembly 7 is embedded in the axial positioning groove 10, the right shaft part is sleeved on the clamping groove body 6 and clamps the clamping groove body 6 and the axial positioning bulge 9 through the axial displacement provided by the clamping assembly 7, and the clamping groove body 6 generates radial displacement under the axial pushing action of the clamping assembly 7 and is in expansion connection with the axial positioning groove 10; the second bearing 3 is fitted over the right shaft member, and the second bearing 3 is fixedly mounted on the test gearbox 32.
The embodiment is used for the high-speed end of the high-speed high-power gear transmission device, has a simple supporting structure and exquisite design, can enable the first overlength shafting 34 and the second overlength shafting 35 in the high-speed high-power gear transmission device to be convenient to assemble, and is beneficial to the stable operation of the gear transmission device.
In order to avoid the problems of difficult processing, high assembly difficulty and the like of the ultra-long transmission shaft which is as long as several meters or even more than ten meters, the high-speed ultra-long transmission shaft is divided into a plurality of shaft sections 8, so that the processing difficulty is reduced.
The high-speed ultra-long shaft section support of the embodiment has good assembly property. The device is particularly suitable for the occasion of the transmission shaft with high rotating speed and larger axial length.
The structure inside the accompanying gear box 33 of the present embodiment is supported by the second ultra-long shafting 35 and the second tilting pad bearing 5. The gear train sleeved on the second ultra-long shafting 35 is of a corresponding structure in the existing accompanying gear box 33.
The second embodiment is as follows: referring to fig. 2, 3 and 5, the clamping groove 6 of the present embodiment is a cylindrical groove with an inverted cone-shaped groove, and the cylindrical groove is provided with a plurality of elongated holes 11 along the axial direction, and the center of the bottom end surface of the clamping groove 6 is provided with a positioning pin 36.
So set up, when in actual use, the tapering of the cylindrical groove body of back taper recess is with the outer periphery of axial positioning protruding 9 matched with, and the outer periphery tapering of axial positioning protruding 9 is 1:15-1:20, is convenient for guarantee to realize overlapping fit between centre gripping cell body 6 and the axial positioning protruding 9, and the little displacement of a plurality of rectangular holes 11 expands outward and is convenient for with the firm clamp of axial positioning protruding 9 in axial positioning recess 10, relies on frictional force to realize accurate transmission. Other compositions and connection relationships are the same as those of the first embodiment.
The elongated holes 11 in the present embodiment are formed in an annular array in the circumferential direction, and the number thereof is 4 to 8. The optimal 4 or 6 during the in-service use, so set up, be convenient for guarantee the tight degree of clamp of centre gripping cell body 6 clamp, the rectangular shape hole produces little displacement in radial direction when the cylinder cell body receives the extrusion force moreover, and then can also play the tight effect of expanding to axial positioning groove 10, guarantees the reliability of connecting between two adjacent axle sections, also can guarantee to transmit accurate moment of torsion.
And a third specific embodiment: the clamping assembly 7 of the present embodiment includes a left clamping unit 12, a right clamping unit 13, and a clamping moving block 14, the left clamping unit 12 and the right clamping unit 13 being disposed left and right in the axial positioning groove 10 in the axial direction, and the right clamping unit 13 being abutted against the groove bottom end face of the axial positioning groove 10, opposite sides of the left clamping unit 12 and the right clamping unit 13 being processed with inclined surfaces, the inclined surfaces of the left clamping unit 12 and the right clamping unit 13 forming an inverted conical space, the clamping moving block 14 being slidably mounted in the inverted conical space, and an outer side wall of the clamping moving block 14 being in contact with the inclined surfaces of the left clamping unit 12 and the right clamping unit 13, respectively.
So set up, because the terminal surface of right clamp unit 13 offsets with the cell body of axial positioning groove 10 for when clamp movable block 14 produced effort to right clamp unit 13, right clamp unit 13 can not produce little displacement, and left clamp unit 12 produces little displacement towards centre gripping cell body 6, and this little displacement impels centre gripping cell body 6 axial displacement and expands outward, and the inside wall of axial positioning groove 10 presss from both sides centre gripping cell body 6 tight, realizes the connection of two adjacent axle sections. Other compositions and connection relationships are the same as those of the first or second embodiment.
The specific embodiment IV is as follows: the left clamping unit 12 and the right clamping unit 13 of this embodiment each include two semicircular arc clamping blocks 15, the two semicircular arc clamping blocks 15 are radially arranged in the same vertical plane, a gap is reserved between the two semicircular arc clamping blocks 15, and a positioning pin 36 on the clamping groove body 6 is inserted into the gap to achieve positioning.
So set up, the gap is used for realizing the location of centre gripping cell body 6, and processing has locating pin 36 on the outside terminal surface of centre gripping cell body 6, and the tip diameter of this locating pin 36 is convergent, is convenient for guarantee to neutrality, when the assembly, can accurate cartridge in the gap, and then guarantee the axiality of being connected between two adjacent axle sections 8. Other compositions and connection relationships are the same as those of the first, second or third embodiments.
Fifth embodiment: the right shaft member of the present embodiment is provided with the attachment/detachment hole 16 in the radial direction, and the attachment/detachment hole 16 communicates with the reverse tapered space formed between the left clamping unit 12 and the right clamping unit 13, as described in the present embodiment with reference to fig. 2 and 3.
So set up, this embodiment is when in actual use, has offered a plurality of dismouting holes 16 on the right side shaft part outer circumference of seting up axial positioning groove 10, and the upper portion processing of pressing from both sides tight movable block 14 has interior six holes, and the lower part terminal surface processing of bolt has outer hexagonal, twists the bolt in dismouting hole 16, and in the bolt downstream in-process, the bolt drives and presss from both sides tight movable block 14 screw thread downstream, and then drives left clamping unit 12 and produce little displacement, when dismantling, reverse operation can.
The disassembly mode is used for the first step of the disassembly process between two adjacent shaft sections 8, and only after the pretightening force is eliminated, the axial disassembly space is reserved, so that the disassembly of the hydraulic oil pump and the mechanical disassembly can be ensured.
Specific embodiment six: referring to fig. 7, the first ultra-long shafting 34 of the present embodiment further includes a hydraulic oil pump dismounting device, which is sealed and mounted on the outer side wall of the joint between two adjacent shaft segments 8;
the hydraulic oil pump dismounting device comprises a hydraulic oil pipe 17, an upper semi-annular cover 18, a lower semi-annular cover 19 and a lock catch 20, wherein the upper semi-annular cover 18 and the lower semi-annular cover 19 are buckled to form a circular annular cover body, one ends of the upper semi-annular cover 18 and the lower semi-annular cover 19 are rotatably connected, the hydraulic oil pipe 17 is connected with the rotatable connection side, and the other ends of the upper semi-annular cover 18 and the lower semi-annular cover 19 are connected through the lock catch 20.
So set up, because the clearance of the junction of two adjacent axle sections 8 is less to be unsuitable for adopting apparatus to dismantle, can't directly stretch into because of mechanical commonly used dismounting device such as spanner, simultaneously, also consequently the kind dismantles the mode and easily causes the damage of axle section 8, can't use strength to lead to dismantling the difficulty even. In this embodiment, the hydraulic oil pump is detached by applying a rightward force to the clamping groove 6 and the clamping assembly 7 by high-pressure hydraulic oil. Other compositions and connection relationships are the same as those in any one of the first to fifth embodiments.
In addition, this embodiment is when in actual use, still includes the annular sealing washer, and this sealing washer is installed on the annular cover body, and when needs use, the sealing washer realizes the seal between the outer circumference of counter shaft section 8 and the annular cover body, is convenient for guarantee to enter into the axial force of the high-pressure oil on the centre gripping cell body 6 and can reach the purpose of dismantling. Meanwhile, the sealing mode adopted in the embodiment can also prevent hydraulic oil from leaking, and the sealing mode adopted in the embodiment is the prior art and is not described in detail here.
Seventh embodiment: the present embodiment will be described with reference to fig. 7, in which an annular nozzle 21 is formed in the inner wall of the annular cover.
So set up, be convenient for directly let in hydraulic oil. Other compositions and connection relationships are the same as those in any one of the first to sixth embodiments.
Eighth embodiment: the first ultra-long shafting 34 of the present embodiment is described with reference to fig. 8 to 11, and further includes a mechanical dismounting device which is embedded in the left shaft member and extends toward the axial positioning boss 9 side until reaching out to top down the holding groove body 6, wherein the mechanical dismounting device includes a screw 22, a dismounting nut 23, a driven bevel gear 24, a drive bevel gear 25, a wheel shaft 26 and an end cap 27, the screw 22 is horizontally rotatably mounted in an axial port of the shaft section 8 in the axial direction of the shaft section 8, the wheel shaft 26 is vertically rotatably mounted in a vertical port of the shaft section 8 in the radial direction of the shaft section 8, and the axial port is communicated with the vertical port; the driving bevel gear 25 is sleeved on the wheel shaft 26, the driven bevel gear 24 is sleeved on the head of the screw 22, the driving bevel gear 25 is meshed with the driven bevel gear 24, the dismounting nut 23 is sleeved on the tail of the screw 22, and the end cover 27 is arranged on the vertical opening.
So set up, when need dismantle overlength shafting, dismantle the end cover earlier, then adopt external allen key cartridge at the afterbody of shaft 26, rotate the spanner, the spanner drives shaft 26, initiative bevel gear 25, driven bevel gear 24 and screw rod 22 motion, the dismantlement nut 23 that is located on the screw rod 22 moves to the right side along its screw thread until with the bottom face contact of centre gripping cell body 6 and exert axial force, hold up centre gripping cell body 6, accomplish the dismantlement of centre gripping cell body 6 on axial positioning protruding 9. Other compositions and connection relationships are the same as those in any one of the first to seventh embodiments.
The mechanical dismounting device is adopted in the embodiment, and can be dismounted after the experiment is completed, so that the waste of the shaft section is avoided, the shaft section can be reused, and the cost is further saved.
The mechanical dismounting device of the embodiment is sufficient in power and is particularly suitable for being used under the conditions of large shaft diameter and large expansion force. The disassembly efficiency is high.
The embodiment can be produced in batch as a whole, and the production cost is reduced. And because it is installed in the axle section 8, its size is not big, light in weight does not influence the use of whole shafting.
Detailed description nine: referring to fig. 8 to 11, the mechanical dismounting device of this embodiment further includes a bearing seat 28, an axle fixing seat 29, an axle mounting seat 30 and a screw aligning seat 31, the bearing seat 28 is coaxial and mounted on an axis in an axial port of the left shaft component, the screw aligning seat 31 is mounted in the axial port and coaxially arranged with the left shaft component, a head of the screw 22 is inserted on the bearing seat 28, a middle part of the screw 22 is rotatably mounted in the screw aligning seat 31 through a bearing, an external thread is provided at a tail of the screw 22, and is matched with the dismounting nut 23 to form a nut screw pair, a guide groove 37 is provided on the dismounting nut 23, a positioning protrusion 38 is provided on an inner side wall of an axial positioning protrusion 9 in the axial port of the left shaft component, the positioning protrusion 38 is slidably disposed in the guide groove 37, the axle mounting seat 30 is fixedly mounted in a vertical port, the axle 26 is rotatably inserted on the axle mounting seat 30, and an upper part of the axle 26 is sleeved with the fixing seat 29 located in the vertical port through the bearing to limit the axial degree of the axle 26.
So set up, also can guarantee simultaneously that axle section 8 keeps structural stability in the rotatory in-process of high speed. Other compositions and connection relationships are the same as those in any one of the first to eighth embodiments.
Detailed description ten: the first bearing 2 and the second bearing 3 of the present embodiment are both split structures, which will be described with reference to fig. 1. So set up, simple to operate. Other compositions and connection relationships are the same as in any one of the first to ninth embodiments.
The working principle of the present invention is explained with reference to fig. 1 to 11:
the support structure of the invention, during actual use, is chosen in its position in the test gearbox 32 by the design of the shaft segments 8 in different lengths, for example: located within the test gearbox 32, the overall length of the left shaft member is greater than the length of the right shaft member located within the test gearbox 32, the longer left shaft member being commonly supported by the first bearing 2 and the second bearing 3.
The end of the left shaft member extending beyond the test gear case 32 is axially limited by a baffle plate. The baffle is connected with the gasket through bolts.
In the disassembly process, the invention can be realized by adopting a hydraulic oil pump disassembly mode and a mechanical disassembly mode respectively.
While the invention has been described with reference to the preferred embodiments, it is not intended to limit the invention, but rather to cover various modifications which may be made by those skilled in the art without departing from the spirit of the invention.
Claims (8)
1. The utility model provides a high-speed overlength axle and bearing structure thereof, it includes flange (1), its characterized in that: the device also comprises a first bearing (2), a second bearing (3), a first tilting pad bearing (4), a second tilting pad bearing (5), a first ultra-long shafting (34) and a second ultra-long shafting (35);
the first ultra-long shafting (34) horizontally penetrates through the test gear box (32), two ends of the first ultra-long shafting (34) penetrate through two ends of the test gear box (32) in the length direction, the flange (1) is arranged on the left end part of the first ultra-long shafting (34) positioned outside the test gear box (32), the first bearing (2) and the first tilting pad bearing (4) are respectively sleeved on the first ultra-long shafting (34), and the first bearing (2) and the first tilting pad bearing (4) are fixedly arranged on the left inner side wall and the right inner side wall of the test gear box (32);
the second ultra-long shaft system (35) is horizontally arranged in the accompanying test gear box (33) in a penetrating mode, two ends of the second ultra-long shaft system (35) penetrate through two ends of the accompanying test gear box (33) in the length direction, the second tilting pad bearing (5) is sleeved on the second ultra-long shaft system (35), and the second tilting pad bearing (5) is fixedly arranged on the left side wall in the accompanying test gear box (33);
the left end part of the second ultra-long shafting (35) is coaxially connected with the right end part of the first ultra-long shafting (34);
the first ultra-long shafting (34) and the second ultra-long shafting (35) have the same structure, the first ultra-long shafting (34) comprises a clamping groove body (6), a clamping assembly (7) and a plurality of shaft sections (8), and the shaft sections (8) are sequentially connected with the clamping assembly (7) in an expanding manner from left to right through the clamping groove body (6);
the left shaft section (8) of the two adjacent shaft sections (8) is a left shaft component, an axial positioning protrusion (9) is processed on the right end face of the left shaft component, the right shaft section (8) of the two adjacent shaft sections (8) is a right shaft component, and an axial positioning groove (10) is processed on the left end face of the right shaft component; the clamping groove body (6) is sleeved on the axial positioning bulge (9), the clamping assembly (7) is embedded in the axial positioning groove (10), the right shaft part is sleeved on the clamping groove body (6) and clamps the clamping groove body (6) and the axial positioning bulge (9) through the axial displacement provided by the clamping assembly (7), and the clamping groove body (6) generates radial displacement under the axial pushing action of the clamping assembly (7) and is in expansion connection with the axial positioning groove (10);
the second bearing (3) is sleeved on the right shaft component, and the second bearing (3) is fixedly arranged on the test gearbox (32);
the clamping groove body (6) is a cylindrical groove body with an inverted conical groove, a plurality of strip-shaped holes (11) are formed in the cylindrical groove body along the axis direction of the cylindrical groove body, and a positioning pin (36) is arranged at the center of the bottom end surface of the clamping groove body (6);
the clamping assembly (7) comprises a left clamping unit (12), a right clamping unit (13) and a clamping moving block (14), wherein the left clamping unit (12) and the right clamping unit (13) are arranged in the axial positioning groove (10) left and right in the axial direction, the right clamping unit (13) is propped against the bottom end face of the axial positioning groove (10), inclined planes are machined on the opposite sides of the left clamping unit (12) and the right clamping unit (13), the inclined planes of the left clamping unit (12) and the inclined planes of the right clamping unit (13) form an inverted cone-shaped space, the clamping moving block (14) is slidably mounted in the inverted cone-shaped space, and the outer side walls of the clamping moving block (14) are respectively contacted with the inclined planes of the left clamping unit (12) and the inclined planes of the right clamping unit (13).
2. The high-speed overlength shaft and supporting structure thereof according to claim 1, wherein: the left clamping unit (12) and the right clamping unit (13) comprise two semicircular arc clamping blocks (15), the two semicircular arc clamping blocks (15) are radially arranged in the same vertical plane, a gap is reserved between the two semicircular arc clamping blocks (15), and a locating pin (36) on the clamping groove body (6) is inserted into the gap to achieve locating.
3. A high speed overlength shaft and support structure therefor in accordance with claim 2 wherein: the right shaft member is provided with a disassembly hole (16) in the radial direction, and the disassembly hole (16) is communicated with an inverted cone-shaped space formed between the left clamping unit (12) and the right clamping unit (13).
4. A high speed overlength shaft and support structure therefor as claimed in claim 3 wherein: the first ultra-long shafting (34) further comprises a hydraulic oil pump dismounting device, and the hydraulic oil pump dismounting device is sealed and sleeved on the outer side wall of the joint of the two adjacent shaft sections (8);
the hydraulic oil pump dismounting device comprises a hydraulic oil pipe (17), an upper semi-annular cover (18), a lower semi-annular cover (19) and a lock catch (20), wherein the upper semi-annular cover (18) and the lower semi-annular cover (19) are buckled to form a circular cover body, one ends of the upper semi-annular cover (18) and the lower semi-annular cover (19) are rotatably connected, the hydraulic oil pipe (17) is connected with the rotatable connection side, and the other ends of the upper semi-annular cover (18) and the lower semi-annular cover (19) are connected through the lock catch (20).
5. The high-speed overlength shaft and supporting structure thereof as claimed in claim 4, wherein: an annular nozzle (21) is processed on the inner side wall of the annular cover body.
6. A high speed overlength shaft and support structure therefor as claimed in claim 3 wherein: the first ultra-long shafting (34) further comprises a mechanical dismounting device which is embedded in the left shaft component and extends to the side of the axial positioning bulge (9) until the mechanical dismounting device extends out to push down the clamping groove body (6), wherein the mechanical dismounting device comprises a screw rod (22), a dismounting nut (23), a driven bevel gear (24), a driving bevel gear (25), a wheel shaft (26) and an end cover (27), the screw rod (22) is horizontally and rotatably arranged in an axial port of the shaft section (8) along the axial direction of the shaft section (8), the wheel shaft (26) is vertically and rotatably arranged in a vertical port of the shaft section (8) along the radial direction of the shaft section (8), and the axial port is communicated with the vertical port; the driving bevel gear (25) is sleeved on the wheel shaft (26), the driven bevel gear (24) is sleeved on the head of the screw rod (22), the driving bevel gear (25) is meshed with the driven bevel gear (24), the dismounting nut (23) is sleeved on the tail of the screw rod (22), and the end cover (27) is arranged on the vertical port.
7. The high-speed overlength shaft and supporting structure thereof as claimed in claim 6, wherein: the mechanical dismounting device further comprises a bearing seat (28), an axle fixing seat (29), an axle mounting seat (30) and a screw rod aligning seat (31), wherein the bearing seat (28) is coaxial and is arranged on the inner side wall of an axial opening of the left shaft component, the screw rod aligning seat (31) is arranged in the axial opening and is coaxial with the left shaft component, the head of the screw rod (22) is inserted and arranged on the bearing seat (28), the middle part of the screw rod (22) is rotatably arranged in the screw rod aligning seat (31) through a bearing, the tail part of the screw rod (22) is provided with an external thread, the external thread is matched with a dismounting nut (23) to form a nut screw rod pair, a guide groove (37) is formed in the dismounting nut (23), a positioning protrusion (38) is arranged on the inner side wall of an axial positioning protrusion (9) in the axial opening of the left shaft component, the positioning protrusion (38) is slidably arranged in the guide groove (37), the axle mounting seat (30) is fixedly arranged in a vertical opening, the axle (26) is rotatably inserted and arranged on the axle mounting seat (30), the upper part of the axle (26) is rotatably sleeved with the axle fixing seat (29) positioned in the vertical opening through the bearing, and the axle fixing seat (29) positioned in the vertical opening.
8. The high-speed overlength shaft and supporting structure thereof according to claim 1, wherein: the first bearing (2) and the second bearing (3) are both of split structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310666672.5A CN116398548B (en) | 2023-06-07 | 2023-06-07 | High-speed overlength axle and bearing structure thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310666672.5A CN116398548B (en) | 2023-06-07 | 2023-06-07 | High-speed overlength axle and bearing structure thereof |
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| CN116398548A CN116398548A (en) | 2023-07-07 |
| CN116398548B true CN116398548B (en) | 2023-10-20 |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202732738U (en) * | 2012-01-04 | 2013-02-13 | 平高集团有限公司 | Shaft coupling and breaker provided with shaft coupling |
| CN103343781A (en) * | 2013-07-12 | 2013-10-09 | 昆山新莱洁净应用材料股份有限公司 | Coupling mechanism of shafts |
| CN203594705U (en) * | 2013-12-18 | 2014-05-14 | 中国电子科技集团公司第五十四研究所 | Novel connector for shafts |
| DE102015226218A1 (en) * | 2015-12-21 | 2017-06-22 | BD Kompressor GmbH | Shaft connection, turbine with a shaft connection, and method for connecting two shaft components |
| CN211820440U (en) * | 2019-12-24 | 2020-10-30 | 江苏宇益环保工程设备有限公司 | Loose coupling |
| CN112013096A (en) * | 2020-09-08 | 2020-12-01 | 雷亿尔精密机械科技(常州)有限公司 | High-speed long shaft intermediate support device |
| CN212584151U (en) * | 2020-06-03 | 2021-02-23 | 爱拉尔江苏智能环保装备有限公司 | Output shaft torque transmission structure of internal mixer speed reducer |
| CN212985831U (en) * | 2020-06-29 | 2021-04-16 | 潍柴动力股份有限公司 | Coupling device |
| WO2021259024A1 (en) * | 2020-06-26 | 2021-12-30 | Inovo Robotics (Hk) Limited | A coupling assembly |
| CN113983077A (en) * | 2021-12-07 | 2022-01-28 | 马云峰 | Circumferential sectional type expansion sleeve or expansion piece |
| CN114198414A (en) * | 2021-11-25 | 2022-03-18 | 浙江凯圣传动科技股份有限公司 | Expansion type clutch inner sleeve and manufacturing method thereof |
| CN217736069U (en) * | 2022-08-04 | 2022-11-04 | 龙口市比特真空技术有限公司 | High-precision self-centering taper spline expansion sleeve |
| CN218935057U (en) * | 2022-12-07 | 2023-04-28 | 江苏东宇工程机械有限公司 | Driving shaft locking reinforcing structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7946819B2 (en) * | 2008-11-26 | 2011-05-24 | General Electric Company | Wind turbine drive shaft connection arrangement |
-
2023
- 2023-06-07 CN CN202310666672.5A patent/CN116398548B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202732738U (en) * | 2012-01-04 | 2013-02-13 | 平高集团有限公司 | Shaft coupling and breaker provided with shaft coupling |
| CN103343781A (en) * | 2013-07-12 | 2013-10-09 | 昆山新莱洁净应用材料股份有限公司 | Coupling mechanism of shafts |
| CN203594705U (en) * | 2013-12-18 | 2014-05-14 | 中国电子科技集团公司第五十四研究所 | Novel connector for shafts |
| DE102015226218A1 (en) * | 2015-12-21 | 2017-06-22 | BD Kompressor GmbH | Shaft connection, turbine with a shaft connection, and method for connecting two shaft components |
| CN211820440U (en) * | 2019-12-24 | 2020-10-30 | 江苏宇益环保工程设备有限公司 | Loose coupling |
| CN212584151U (en) * | 2020-06-03 | 2021-02-23 | 爱拉尔江苏智能环保装备有限公司 | Output shaft torque transmission structure of internal mixer speed reducer |
| WO2021259024A1 (en) * | 2020-06-26 | 2021-12-30 | Inovo Robotics (Hk) Limited | A coupling assembly |
| CN212985831U (en) * | 2020-06-29 | 2021-04-16 | 潍柴动力股份有限公司 | Coupling device |
| CN112013096A (en) * | 2020-09-08 | 2020-12-01 | 雷亿尔精密机械科技(常州)有限公司 | High-speed long shaft intermediate support device |
| CN114198414A (en) * | 2021-11-25 | 2022-03-18 | 浙江凯圣传动科技股份有限公司 | Expansion type clutch inner sleeve and manufacturing method thereof |
| CN113983077A (en) * | 2021-12-07 | 2022-01-28 | 马云峰 | Circumferential sectional type expansion sleeve or expansion piece |
| CN217736069U (en) * | 2022-08-04 | 2022-11-04 | 龙口市比特真空技术有限公司 | High-precision self-centering taper spline expansion sleeve |
| CN218935057U (en) * | 2022-12-07 | 2023-04-28 | 江苏东宇工程机械有限公司 | Driving shaft locking reinforcing structure |
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| Publication number | Publication date |
|---|---|
| CN116398548A (en) | 2023-07-07 |
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