CN108999859A - A kind of shaft coupling hydraulic bolt and its application method - Google Patents
A kind of shaft coupling hydraulic bolt and its application method Download PDFInfo
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- CN108999859A CN108999859A CN201810833722.3A CN201810833722A CN108999859A CN 108999859 A CN108999859 A CN 108999859A CN 201810833722 A CN201810833722 A CN 201810833722A CN 108999859 A CN108999859 A CN 108999859A
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- stud
- shaft coupling
- hydraulic
- expansion sleeve
- bolt
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- 230000008878 coupling Effects 0.000 title claims abstract description 77
- 238000010168 coupling process Methods 0.000 title claims abstract description 77
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000008961 swelling Effects 0.000 claims description 12
- 239000000314 lubricant Substances 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 30
- 238000009434 installation Methods 0.000 description 11
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910000734 martensite Inorganic materials 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 241001484259 Lacuna Species 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 210000004919 hair shaft Anatomy 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000012360 testing method Methods 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
- F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
- F16B13/066—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like
-
- 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
- F16D1/033—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/89—Use of a hydraulic action
-
- 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
- F16D2300/00—Special features for couplings or clutches
- F16D2300/12—Mounting or assembling
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses a kind of shaft coupling hydraulic bolts, including being machined with external screw thread on the outer peripheral surface of both ends, the stud of the tapered face setting of middle part outer peripheral surface, and it is sheathed in the middle part of the stud, the expansion sleeve that the tapered surface of inner surface and the stud fits, it further include the nut for being bolted in the stud both ends respectively, and oiling channel, the hydraulic bolt is arranged in the inner hole of the shaft coupling, two adjacent shaft couplings to be fastened, what one end that the oiling channel is included in the stud opened up, with the high pressure oil port of stud coaxial arrangement, and it is formed in the helical form oil duct on the tapered surface of the stud, it further include the center oilhole for being connected to the high pressure oil port and the helical form oil duct, the taper of the inner surface of the tapered surface of the stud and the expansion sleeve point Not Wei 1:20, the gap of the expansion sleeve outer diameter and shaft coupling inner hole is 0.03~0.09mm.The configuration of the present invention is simple can reach good using effect.
Description
Technical field
The present invention relates to machanical fastener technical fields, concretely relate to a kind of shaft coupling hydraulic bolt, this hair
A kind of bright application method for further relating to shaft coupling hydraulic bolt.
Background technique
The conventional bolt of shaft coupling is rigid location structure, higher to positioning accuracy request, and scene fraising precision
It is extremely difficult to required precision, if the gap of amplification bolt and screw hole, will affect the positioning accuracy of shaft coupling, bring to safe operation
Hidden danger needs by force to squeeze into bolt if guaranteeing gap, and bolt and screw hole is made to wreck, and influences disassembly when maintenance,
And bolt is damaged caused by dismantling because of strength, need to be ordered to producer, the period is difficult to ensure.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of shaft coupling hydraulic bolt, can at least solve existing skill
One of above problem in the presence of art.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of shaft coupling hydraulic bolt, including external screw thread, the tapered face of middle part outer peripheral surface are machined on the outer peripheral surface of both ends
The stud of setting, and be sheathed in the middle part of the stud, the tapered surface of inner surface and the stud fits
Expansion sleeve, further include nut and the oiling channel for being bolted in the stud both ends respectively, the hydraulic bolt is worn
In the inner hole of the shaft coupling, two adjacent shaft couplings are fastened, the oiling channel is included in the stud
One end open up, high pressure oil port with stud coaxial arrangement, and be formed in the tapered surface of the stud
On helical form oil duct, further include the center oilhole for being connected to the high pressure oil port and the helical form oil duct, the double end spiral shell
The taper of the inner surface of the tapered surface of bolt and the expansion sleeve is respectively 1:20, between the expansion sleeve outer diameter and shaft coupling inner hole
Gap is 0.03~0.09mm.
As restriction, the gap of the expansion sleeve outer diameter and shaft coupling inner hole is 0.05~0.07mm.
As restriction, the material of the stud is 34CrNi3Mo.
As restriction, anti-loosening locking part is connected between each nut and the stud.
It is limited as further, the nut is countersunk nut, and the anti-loosening locking part is distensible ring.
It is limited as further, the nut is flush nut, and the anti-loosening locking part is gasket.
The other end as restriction, the stud relative to setting high pressure oil port one end offers and the double end
The round platform hole of bolt coaxial arrangement.
As restriction, the both ends of the stud tapered surface are not less than according to the spacing of the external screw thread inner end of respective corresponding end
2mm。
As restriction, the roughness of each shaft coupling inner hole is not less than Ra1.6.
The present invention can make stud under the action of axial tension by the hydraulic bolt using a tapered surface structure
Interference fit is generated in the inner hole of shaft coupling with expansion sleeve, eliminates interporal lacuna in shaft coupling, reaches precision positioning, and is dismantled
When, it because tapered on stud, and is easy to exit, subsequent expansion sleeve is shunk, and is restored to initialized gap values and is completed easily to tear open
It unloads.
The present invention also provides the application method of above-mentioned shaft coupling hydraulic bolt, this method according to the following steps sequence into
Row:
A, the hydraulic bolt is installed:
A1, the inner hole for two shaft couplings that hydraulic bolt to be used fastens is used respectively numerical control to wheel boring machine tool
Carry out bore hole processing；
A2, the inner hole of the shaft coupling after bore hole is ground；
A3, lubricant or powdered lubricant are smeared inside and outside expansion sleeve, expansion sleeve are sheathed on stud, after be installed on step
In the inner hole of two shaft couplings after rapid a2 milled processed；
A4, the stud at high pressure oil port internal thread hole in connect tensile bolt, in the tensile bolt
Upper installation hydraulic elongator starts the hydraulic pump and drives in connecting hydraulic pump via high-pressure hose on the hydraulic elongator
The hydraulic elongator stretch the stud eliminated with expansion sleeve described in swelling between expansion sleeve and the inner hole of shaft coupling with
And the gap between expansion sleeve and stud, the tension force that the hydraulic pump applies for the first time be 300bar, after successively apply 50bar
Until fastening；
A5, the nut for installing the stud two sides are simultaneously fastened via hydraulic elongator；
B, the hydraulic bolt is dismantled:
B1, the nut that the stud is loosened via the hydraulic elongator；
B2, in installing creosoted pole in the high pressure oil port, the creosoted pole connects described hydraulic via the high-pressure hose
Pump, in injected in the high pressure oil port high pressure oil make high pressure oil flow into the helical form oil duct with push the stud in
The reverse movement of swelling realizes the disassembly of the hydraulic bolt.
The present invention uses hydraulic bolt by above-mentioned application method, and Bolt dismantling can be made simple, improved efficiency, and be avoided that
The cost that conventional bolt is scrapped and generated wastes.
The present invention is described in further detail below in conjunction with Figure of description and specific embodiment.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.
Fig. 1 is the usage state diagram of shaft coupling hydraulic bolt described in the embodiment of the present invention；
Fig. 2 is another usage state diagram of shaft coupling hydraulic bolt described in the embodiment of the present invention；
Fig. 3 is the installation status diagram of shaft coupling hydraulic bolt described in the embodiment of the present invention；
Fig. 4 is the use state explosive view of shaft coupling hydraulic bolt described in the embodiment of the present invention；
Fig. 5 is structural schematic diagram of the numerical control described in inventive embodiments to wheel boring machine tool；
Fig. 6 is the left view of Fig. 5.
In figure:
1, high-low pressure shaft coupling, 2, rotating assembly, 3, feeding assembly, 4, regulation control part, 5, electric cabinet, 6, rack,
7, steam turbine cylinder, 8, low hair shaft coupling, 9, laser levelling appearance, 10, coupling bolt hole, 11, manipulation touch screen, 12, double end
Bolt, 13, expansion sleeve, 14, nut, 15, oiling channel, 151, high pressure oil port, 152, helical form oil duct, 153, center oilhole,
16, anti-loosening locking part, 17, round platform hole, 18, shaft coupling, 19, inner hole, 20, tensile bolt, 21, support ring, 22, isolation ring, 23,
Drive ring.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.In the following detailed description, only pass through explanation
Mode describes certain exemplary embodiments of the invention.Undoubtedly, those skilled in the art will recognize,
In the case where without departing from the spirit and scope of the present invention, described embodiment can be repaired with a variety of different modes
Just.Therefore, attached drawing and description are regarded as illustrative in nature, and are not intended to limit the scope of the claims.
As shown in Fig. 1 to Fig. 6, according to a kind of shaft coupling hydraulic bolt of the present embodiment, overall structure includes double
Hook bolt 12, expansion sleeve 13, nut 14 and oiling channel 15, specifically, being machined with outer spiral shell on 12 both ends outer peripheral surface of stud
The tapered face setting of line, middle part outer peripheral surface, expansion sleeve 13 are sheathed on the cone at 12 middle part of stud, inner surface and stud 12
Shape face fits, i.e. the inner surface of expansion sleeve 13 is also equipped with taper identical with the tapered surface taper at 12 middle part of stud
Face can be such that stud 12 and expansion sleeve 13 is joining using the hydraulic bolt of a tapered surface structure under the action of axial tension
Interference fit is generated in the inner hole 19 of axis device 18, eliminates 19 gap of inner hole of shaft coupling 18, when reaching precision positioning, and dismantling,
It because tapered on stud 12, and is easy to exit, subsequent expansion sleeve 13 is shunk, and is restored to initialized gap values and is completed easily to tear open
It unloads, certainly, on the basis of meeting machining accuracy, makes to easily facilitate handling, the present embodiment between stud 12 and expansion sleeve 13
In, the taper of the inner surface of the tapered surface and expansion sleeve 13 of stud 12 is 1:20, and nut 14 is bolted in stud 12
On the external screw thread at both ends, the hydraulic bolt of the present embodiment is arranged in the inner hole 19 of shaft coupling 18, by two adjacent shaft couplings
Device 18 fastens, high pressure oil that one end that oiling channel 15 is included in stud 12 opens up, being coaxially disposed with stud 12
Mouthfuls 151, and the helical form oil duct 152 being formed on the tapered surface of stud 12, further include be connected to high pressure oil port 151 and
The center oilhole 153 of helical form oil duct 152, on the basis of guaranteeing installation accuracy, for make hydraulic bolt easily facilitate installation and
Disassembly, when the taper of stud 12 and expansion sleeve 13 is 1:20, between 13 outer diameter of expansion sleeve and the inner hole 19 of shaft coupling 18
Gap be 0.03~0.09mm, to keep installation effect more preferable, gapless after installation, positioning accuracy more preferably, 13 outer diameter of expansion sleeve and connection
The gap of the inner hole 19 of axis device 18 is 0.05~0.07mm, it is preferred that gap 0.05mm.By by stud 12 and expansion
The taper of set 13 is set as 1:20, and the gap setting of the inner hole 19 of 13 outer diameter of expansion sleeve and shaft coupling 18 is 0.05mm, can be full
On the basis of sufficient processing conditions, make to form controllable mistake between 19 three of inner hole of stud 12, expansion sleeve 13 and shaft coupling 18
It is full of cooperation, avoids the gliding dislocations between flange, is conducive to eliminate unit vibration, keeps unit stable.
In the present embodiment, to make fastener, intensity is high, plasticity is good, and the material of stud 12 is 34CrNi3Mo,
34CrNi3Mo is high-strength alloy structural steel, have good comprehensive mechanical performance and processing performance, have good plasticity,
Toughness, wearability, corrosion resistance and certain heat resistance, and temper resistance is high, tempering range is wide, cold and hot working performance
Good, tensile strength and yield strength are all more much higher than traditional bolt material, the mechanical performance of bolt, depend on heat treatment
Technique, metallographic structure and good chemical component.In the present embodiment, 34CrNi3Mo is after 900 DEG C × 20min quenching, and internal group
It knits and is completely converted into martensite and there is tiny crystal grain, done good tissue for tempering and prepared, the tissue for being tempered state is
Tempered sorbite, carbide are precipitated inside lath martensite, and remain the position of lath martensite to not having in grain boundaries
Carbide segregation, Carbide Precipitation also not coarse inside martensite cluster, such pattern ensure that the high intensity of material with
High tenacity, meanwhile, Ni element contained in material has excellent corrosion resistance, intensity and plasticity.
In the present embodiment, to guarantee the locking between nut 14 and stud 12, between each nut 14 and stud 12
It is connected with anti-loosening locking part 16, specifically, the nut 14 at 12 both ends of stud is countersunk nut 14 as shown in Fig. 1, this
When anti-loosening locking part 16 be distensible ring, certainly, can also be as shown in Fig. 2, the nut 14 of 12 one end of stud is flush nut, this
When anti-loosening locking part 16 be gasket, the nut 14 of 12 other end of stud is countersunk nut, the anti-loosening locking part 16 of corresponding end
For distensible ring, certainly, in addition to above two situation, also the nut 14 at 12 both ends of stud can be made to be according to the design needs
Flush nut, corresponding anti-loosening locking part 16 are gasket.
In the present embodiment, the other end of the stud 12 relative to setting 151 one end of high pressure oil port offers and double end
The round platform hole 17 that bolt 12 is coaxially disposed, the setting of round platform hole 17, can be convenient for cannot be normal between stud 12 and expansion sleeve 13
Under disassembly status, installation jacking system disassembly stud 12 and expansion sleeve 13, specific method for dismounting are, in round platform hole 17
Tensile bolt 20 is installed, after in installing hydraulic elongator on tensile bolt 20, concrete operations mode and hydraulic bolt swelling mode
It is identical, so that hydraulic elongator is stretched reverse movement of the stud 12 to 12 swelling of stud, only to realize double end
Disassembly between bolt 12 and expansion sleeve 13.
In the present embodiment, for the installation and the withdrawal space for guaranteeing stud 12 and expansion sleeve 13,12 taper of stud
The both ends in face are not less than 2mm according to the spacing of the external screw thread inner end of respective corresponding end, it is preferred that are 2mm, in order to make shaft coupling 18
19 roughness of inner hole is promoted convenient for cooperating with the installation of hydraulic bolt, and the roughness of the inner hole 19 of each shaft coupling 18 is not less than
Ra1.6。
The present invention also provides the application method of above-mentioned shaft coupling hydraulic bolt, this method according to the following steps sequence into
Row:
A, the hydraulic bolt is installed:
A1, two shaft couplings 18 for fastening hydraulic bolt to be used inner hole 19 respectively using numerical control to wheel bore hole
Lathe carries out bore hole processing；
A2, the inner hole 19 of the shaft coupling 18 after bore hole is ground；
A3, lubricant or powdered lubricant are smeared inside and outside expansion sleeve 13, expansion sleeve 13 is sheathed on stud, it is rear to install
In the inner hole 19 of two shaft couplings 18 after step a2 milled processed；
A4, the stud 12 at high pressure oil port 151 internal thread hole in connect tensile bolt 20, in the drawing
It stretches and hydraulic elongator is installed on bolt 20, in connecting hydraulic pump via high-pressure hose on the hydraulic elongator, start the liquid
Press pump drives the hydraulic elongator to stretch the stud and eliminates expansion sleeve 13 and shaft coupling with expansion sleeve 13 described in swelling
Between the inner hole 19 of device 18 and the gap between expansion sleeve 13 and stud 12, the tension force that the hydraulic pump applies for the first time are
300bar, after successively apply 50bar until fastening；
A5, the nut 14 for installing the stud two sides are simultaneously fastened via hydraulic elongator；
B, the hydraulic bolt is dismantled:
B1, the nut 14 that the stud is loosened via the hydraulic elongator；
B2, in installing creosoted pole in the high pressure oil port 151, the creosoted pole connects the liquid via the high-pressure hose
Press pump flows into high pressure oil in the helical form oil duct 152 to push described pair in injecting high pressure oil in the high pressure oil port 151
Hook bolt 12 realizes the disassembly of the hydraulic bolt in the reverse movement of swelling.
Specifically, hydraulic bolt install when, as shown in Fig. 1 combination Fig. 3, Fig. 4, the first step, by hydraulic bolt to be used into
The inner hole 19 of two shaft couplings 18 of row fastening carries out bore hole processing, specific structure and boring to wheel boring machine tool using numerical control respectively
Hole method is as shown in Fig. 5, Fig. 6, the automatic boring coupler hole lathe of numerical control, including the rack 6 being installed on steam turbine cylinder 7,
Rack 6 is equipped with rotating assembly 2, feeding assembly 3, regulation control part 4, electric cabinet 5, laser levelling appearance 9 and manipulation touch screen
11, rotating assembly 2, feeding assembly 3, regulation control part 4, laser levelling appearance 9 and manipulation touch screen 11 with 5 phase of electric cabinet
Even, rotating assembly 2 for realizing the inner hole 19 of boring shaft coupling 18 boring head forward or reverse, feeding assembly 3 realize include boring head
Rotating assembly 2 inside is retreated to shaft coupling 18, and laser levelling appearance 9 is used to measure the inner hole 19 and boring head concentricity of shaft coupling 18
The numeric feedback to electric cabinet 5 is simultaneously utilized regulation control part according to fed back values manipulation 11 respective keys of touch screen by numerical value
4 automatic linkages realize that the horizontal of boring head is moved forward and backward, moves up and down vertically and horizontal pivot angle shift action.
Lathe of the present invention is installed in the rack 6 on steam turbine cylinder 7, according to each bolt hole processing length, can set machine
Bed is processed at a distance from end face with shaft coupling 18, can be used for processing the inner hole 19 of high pressure Yu low pressure shaft coupling 18, it can also be used to process
The inner hole 19 of low pressure and generator coupling 18 is provided with transformer, direct current PLC, DC power supply and driver etc. in electric cabinet 5
Hardware serves the key respective action output on manipulation touch screen 11, rotating assembly 2, feeding assembly 3, regulation control part 4
And electric cabinet 5 etc. carries out movement output by the manipulation touch screen 11 being fixed on the rack, by manipulation touch screen 11
Related key, it can be achieved that bore hole process boring head revolute function and feed function, it is public that other specific structures can refer to company early period
A kind of automatic boring coupler hole lathe of the numerical control opened, then this repeats no more.
The inner hole 19 of shaft coupling 18 after bore hole is ground by second step, and the inner hole 19 of shaft coupling 18 can be made thick
Rugosity is promoted convenient for cooperating with the installation of hydraulic bolt, and the roughness of the inner hole 19 of each shaft coupling 18 is not less than Ra1.6；Third
Step smears lubricant or powdered lubricant inside and outside expansion sleeve 13, expansion sleeve 13 is sheathed on stud 12, after be installed on step
(2) in the inner hole 19 of two shaft couplings 18 after milled processed, in the present embodiment, powdered lubricant is black lead powder, and black lead powder has good
Good chemical stability, it is corrosion-resistant, thermal conductivity is good, permeability is low；It can be effectively prevented thread biting locking, easy disassembly, while again
Play the role of antirust, compared with lubricating oil in the prior art, lubricating oil tend not to high speed, high temperature, high pressure condition
Lower use, and black lead powder can use under the conditions of 200~2000 DEG C of temperature；4th step, the double end spiral shell at high pressure oil port 151
Tensile bolt 20 is connected in the internal thread hole of bolt 12, in installing hydraulic elongator on tensile bolt 20, in passing through on hydraulic elongator
Hydraulic pump is connected by high-pressure hose, starting hydraulic pump drives hydraulic elongator stretching stud 12 to disappear with swelling expansion sleeve 13
Except the gap between expansion sleeve 13 and the inner hole 19 of shaft coupling 18 and between expansion sleeve 13 and stud 12, hydraulic pump applies for the first time
Tension force be 300bar, after successively apply 50bar until fastening, in the present embodiment, hydraulic pump can for air-driven hydraulic pump or
Hydraulic hand-pump, tensile bolt 20 and hydraulic elongator are to prevent hydraulic elongator using the product in existing structure
Overtravel learns that tension force that hydraulic pump applies for the first time is 300bar through repetition test, after successively apply 50bar until fastening,
And realize the swelling of hydraulic bolt；5th step, the nut 14 of 12 two sides of mounting stud, and hydraulic drawing is driven via hydraulic pump
Stretching device drives nut 14 to fasten, and the fastening of nut 14 is also fastened via hydraulic elongator, i.e., tensile bolt 20 is installed on side
In the internal thread hole of nut 14, after in installing hydraulic elongator on tensile bolt 20, fastening method and aforementioned swelling hydraulic bolt
Method it is similar, details are not described herein, by aforesaid operations complete hydraulic bolt installation.
And when hydraulic bolt disassembly, as shown in Fig. 1 combination Fig. 4, the first step, TongAn loading nut 14, via hydraulic tensioning
Device loose nut 14；Second step, in installing creosoted pole in high pressure oil port 151, creosoted pole connects hydraulic pump via high-pressure hose, in
Injection high pressure oil flows into high pressure oil in helical form oil duct 152 to push stud 12 in the anti-of swelling in high pressure oil port 151
To movement, the disassembly of hydraulic bolt is realized.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.It is any
Those skilled in the art, the equivalent changes and modifications made under the premise of not departing from design and the principle of the present invention,
It should belong to the scope of protection of the invention.
Claims (10)
1. a kind of shaft coupling hydraulic bolt, it is characterised in that: including being machined with external screw thread, middle part outer peripheral surface on the outer peripheral surface of both ends
The stud of tapered face setting, and be sheathed in the middle part of the stud, the taper of inner surface and the stud
The expansion sleeve that face fits further includes nut and the oiling channel for being bolted in the stud both ends respectively, described hydraulic
Bolt is arranged in the inner hole of the shaft coupling, and two adjacent shaft couplings are fastened, and the oiling channel is included in described
High pressure oil port that one end of stud opens up, with stud coaxial arrangement, and it is formed in the stud
Tapered surface on helical form oil duct, further include the center oilhole for being connected to the high pressure oil port and the helical form oil duct, institute
The taper for stating the tapered surface of stud and the inner surface of the expansion sleeve is respectively 1:20, the expansion sleeve outer diameter and shaft coupling
The gap of inner hole is 0.03~0.09mm.
2. a kind of shaft coupling hydraulic bolt according to claim 1, it is characterised in that: the expansion sleeve outer diameter and shaft coupling
The gap of device inner hole is 0.05~0.07mm.
3. a kind of shaft coupling hydraulic bolt according to claim 1 or 2, it is characterised in that: the material of the stud
Matter is 34CrNi3Mo.
4. a kind of shaft coupling hydraulic bolt according to claim 1, it is characterised in that: in each nut and described double
Anti-loosening locking part is connected between hook bolt.
5. a kind of shaft coupling hydraulic bolt according to claim 4, it is characterised in that: the nut is countersunk nut,
The anti-loosening locking part is distensible ring.
6. a kind of shaft coupling hydraulic bolt according to claim 4, it is characterised in that: the nut is flush nut, institute
Stating anti-loosening locking part is gasket.
7. a kind of shaft coupling hydraulic bolt according to claim 1, it is characterised in that: relative to setting high pressure oil port one
The other end of the stud at end offers the round platform hole with stud coaxial arrangement.
8. a kind of shaft coupling hydraulic bolt according to claim 1, it is characterised in that: the stud tapered surface
Both ends are not less than 2mm according to the spacing of the external screw thread inner end of respective corresponding end.
9. a kind of shaft coupling hydraulic bolt according to claim 1, it is characterised in that: each shaft coupling inner hole it is thick
Rugosity is not less than Ra1.6.
10. such as a kind of application method of shaft coupling hydraulic bolt according to any one of claims 1 to 9, which is characterized in that
This method sequentially carries out according to the following steps:
A, the hydraulic bolt is installed:
A1, the inner hole for two shaft couplings that hydraulic bolt to be used fastens is used respectively numerical control carry out to wheel boring machine tool
Bore hole processing；
A2, the inner hole of the shaft coupling after bore hole is ground；
A3, lubricant or powdered lubricant are smeared inside and outside expansion sleeve, expansion sleeve are sheathed on stud, after be installed on step a2
In the inner hole of two shaft couplings after milled processed；
A4, the stud at high pressure oil port internal thread hole in connect tensile bolt, pacify on the tensile bolt
Fill hydraulic elongator, in connecting hydraulic pump via high-pressure hose on the hydraulic elongator, start the hydraulic pump drive it is described
Hydraulic elongator is stretched the stud and is eliminated between expansion sleeve and the inner hole of shaft coupling and swollen with expansion sleeve described in swelling
Gap between expansion set and stud, the tension force that the hydraulic pump applies for the first time be 300bar, after successively apply 50bar until
Fastening；
A5, the nut for installing the stud two sides are simultaneously fastened via hydraulic elongator；
B, the hydraulic bolt is dismantled:
B1, the nut that the stud is loosened via the hydraulic elongator；
B2, in installing creosoted pole in the high pressure oil port, the creosoted pole connects the hydraulic pump via the high-pressure hose, in
Injection high pressure oil flows into high pressure oil in the helical form oil duct to push the stud in swelling in the high pressure oil port
Reverse movement, realize the disassembly of the hydraulic bolt.
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| CN201810833722.3A CN108999859A (en) | 2018-07-26 | 2018-07-26 | A kind of shaft coupling hydraulic bolt and its application method |
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| CN201810833722.3A CN108999859A (en) | 2018-07-26 | 2018-07-26 | A kind of shaft coupling hydraulic bolt and its application method |
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| CN108999859A true CN108999859A (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810833722.3A Pending CN108999859A (en) | 2018-07-26 | 2018-07-26 | A kind of shaft coupling hydraulic bolt and its application method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114893253A (en) * | 2022-04-08 | 2022-08-12 | 中国航发沈阳发动机研究所 | Reliable rotor connecting structure and method for high-temperature component |
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| CN114893253A (en) * | 2022-04-08 | 2022-08-12 | 中国航发沈阳发动机研究所 | Reliable rotor connecting structure and method for high-temperature component |
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