CN102913531A - Hydraulic bolt - Google Patents
Hydraulic bolt Download PDFInfo
- Publication number
- CN102913531A CN102913531A CN2012104411032A CN201210441103A CN102913531A CN 102913531 A CN102913531 A CN 102913531A CN 2012104411032 A CN2012104411032 A CN 2012104411032A CN 201210441103 A CN201210441103 A CN 201210441103A CN 102913531 A CN102913531 A CN 102913531A
- Authority
- CN
- China
- Prior art keywords
- screw rod
- annular piston
- hydraulic
- bolt
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009434 installation Methods 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
Abstract
The invention belongs to the technical field of mechanical parts and particularly relates to a hydraulic bolt. The hydraulic bolt comprises a screw, wherein threads are arranged at two ends of the screw, a taper sleeve is sleeved in the middle of the screw, the taper sleeve is connected with the screw in a taper fitting mode, and one end of the screw is connected with a self-locking hydraulic nut. According to the hydraulic bolt, the taper sleeve is arranged on the surface of the screw, the taper sleeve is connected with the screw in a taper fitting mode, and the taper sleeve is matched with the self-locking hydraulic nut to install the bolt, so that the hydraulic bolt is simple in structure and quick to install and disassemble, the installation time of devices can be shortened, the hydraulic bolt can be used repetitively, and the operating efficiency and the operation reliability of operators are improved.
Description
Technical field
The invention belongs to the component of machine technical field, be specifically related to a kind of hydraulic bolt.
Background technique
Existing articulation fitting-up bolt is a kind of mechanical bolt, need to be gone to tighten by manpower.Because articulation bolt also is close-fitting, so the conventional mounting method has heating, shrinkage method and torque spanner method, bolt mainly is comprised of screw rod, nut.
The installation method of existing bolt and flange is: bolt is placed in the liquid nitrogen, allow its cooling shrink, make its external diameter less than the flange aperture, then rapidly it is filled in the flange hole, behind bolt absorbing heat resizing, accomplish interference fit with flange hole, be loaded on nut check.During dismounting, bolt can only be got from flange by force or can't be removed.
There is following defective in prior art: the installation requirement of bolt is high, installs, dismantles relatively difficulty; From flange, get by force and can damage bolt, can not reuse; The bolt cooling can cause installation precision low after shrinking and recovering, and the simultaneously cooling of bolt recovers to need the long period, and the installation time is long.
Summary of the invention
The objective of the invention is in order to overcome the deficiencies in the prior art, provide a kind of can be simply, the hydraulic bolt of quick mounting dismounting.
For achieving the above object, technological scheme of the present invention is: a kind of hydraulic bolt comprises screw rod, the screw rod two ends are equipped with screw thread, described screw rod middle cover has tapered sleeve, is connected by the taper fit mode between tapered sleeve and the screw rod, and an end of screw rod is connected with the self-locking type hydraulic nut.
Further, described screw rod is provided with the hydraulic pressurization passage, and the hydraulic pressurization passage is communicated with the matching surface of screw rod and tapered sleeve.
Further, described self-locking type hydraulic nut comprises cylinder body and annular piston, be provided with seal arrangement between cylinder body and the annular piston, cylinder body is provided with oil duct, have the bolt hole for tensile bolt in the middle of the cylinder body, cylinder base is provided with the annular piston chamber, and oil duct communicates with the annular piston chamber, annular piston is embedded in the annular piston chamber and protrudes a cylinder body part, and the part that annular piston protrudes cylinder body is provided with locking nut.
Further, be provided with setting sleeve between described tapered sleeve and the self-locking type hydraulic nut, setting sleeve one end withstands tapered sleeve, and the other end withstands the annular piston of self-locking type hydraulic nut.
Further, be connected with round nut on the described screw rod the other end screw thread.
The present invention is by arranging tapered sleeve in screw surface, tapered sleeve is connected with the mode of screw rod with taper fit, and cooperate construction bolt with the self-locking type hydraulic nut, simple in structure, install simultaneously, dismantle quick, the saving equipment installation time, reusable, improved worker's operating efficiency and operational reliability.
Description of drawings
Fig. 1 is that the present invention is installed to the structural representation on the flange hole.
Fig. 2 is the structural representation of self-locking type hydraulic nut among the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 1, the present invention includes screw rod 2, screw rod 2 two ends are equipped with screw thread, the screw rod middle cover has tapered sleeve 3, be connected by the taper fit mode between the internal surface of tapered sleeve 3 and screw rod 2 surfaces, an end of screw rod 2 is connected with self-locking type hydraulic nut 5, is connected with round nut 1 on screw rod 2 the other end screw threads.Be provided with setting sleeve 6 between tapered sleeve 3 and the self-locking type hydraulic nut 5, setting sleeve 6 one ends withstand tapered sleeve 3, and the other end withstands the annular piston 5.3 of self-locking type hydraulic nut 5.Screw rod 2 is provided with hydraulic pressurization passage 7, and hydraulic pressurization passage 7 is communicated with the matching surface of screw rod 2 and tapered sleeve 3.
As shown in Figure 2, self-locking type hydraulic nut 5 comprises cylinder body 5.1 and annular piston 5.3, be provided with seal arrangement 5.2 between cylinder body 5.1 and the annular piston 5.3, cylinder body 5.1 is provided with oil duct 5.5, have the bolt hole for tensile bolt in the middle of the cylinder body 5.1, cylinder body 5.1 bottoms are provided with annular piston chamber 5.6, oil duct 5.5 communicates with annular piston 5.6 chambeies, annular piston 5.3 is embedded in the annular piston chamber 5.6 and protrudes cylinder body 5.1 parts, and the part that annular piston 5.3 protrudes cylinder body 5.1 is provided with locking nut 5.4.
The method that the present invention is installed in the flange hole is: at first tapered sleeve 3, screw rod 2 are penetrated in the hole of manufactured flange 4 successively with setting sleeve 6, then load onto self-locking type hydraulic nut 5 and make the annular piston 5.3 of self-locking type hydraulic nut 5 withstand flange 4, inject high pressure oil and to self-locking type hydraulic nut 5 is interior screw rod 2 is stretched.Because be that mode with taper fit is nested together between screw rod 2 and the tapered sleeve 3, when screw rod 2 outwards stretched, screw rod 2 can push tapered sleeve 3, tightr with the applyings of flange hole after tapered sleeve 3 is stressed, thus make gap elimination between flange hole and the tapered sleeve 3.When being located at setting sleeve 6 between tapered sleeve 3 and the self-locking type hydraulic nut 5 and can preventing that tapered sleeve is squeezed to a side shifting, after eliminate in gap between flange hole and the tapered sleeve, locking nut 5.4 lockings with on the self-locking type hydraulic nut 5 are loaded at last round nut 1 screw rod are fixed, installation.
The method that the present invention dismantles from flange hole is: at first unscrew locking nut 5.4 on the self-locking type hydraulic nut 5 loosening the stretching action power to screw rod, the self-locking type hydraulic nut 5 of back-outing is removed setting sleeve 6, unscrews simultaneously the round nut 1 of laying down on the screw rod.Then high pressure oil is injected hydraulic pressure pressurization passageway 7, make the matching surface of screw rod 2 and tapered sleeve 3 form the high pressure oil film, produce active force and make screw rod 2 automatic loosening or releases, tapered sleeve 3 can narrow down to the original size release after screw rod 2 was released, and dismounting is finished.
Claims (5)
1. a hydraulic bolt comprises screw rod, and the screw rod two ends are equipped with screw thread, it is characterized in that: described screw rod middle cover has tapered sleeve, is connected by the taper fit mode between tapered sleeve and the screw rod, and an end of screw rod is connected with the self-locking type hydraulic nut.
2. hydraulic bolt according to claim 1, it is characterized in that: described screw rod is provided with the hydraulic pressurization passage, and the hydraulic pressurization passage is communicated with the matching surface of screw rod and tapered sleeve.
3. hydraulic bolt according to claim 1, it is characterized in that: described self-locking type hydraulic nut comprises cylinder body and annular piston, be provided with seal arrangement between cylinder body and the annular piston, cylinder body is provided with oil duct, have the bolt hole for tensile bolt in the middle of the cylinder body, cylinder base is provided with the annular piston chamber, and oil duct communicates with the annular piston chamber, annular piston is embedded in the annular piston chamber and protrudes a cylinder body part, and the part that annular piston protrudes cylinder body is provided with locking nut.
4. hydraulic bolt according to claim 1, it is characterized in that: be provided with setting sleeve between described tapered sleeve and the self-locking type hydraulic nut, setting sleeve one end withstands tapered sleeve, and the other end withstands the annular piston of self-locking type hydraulic nut.
5. hydraulic bolt according to claim 1 is characterized in that: be connected with round nut on the described screw rod the other end screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104411032A CN102913531A (en) | 2012-11-07 | 2012-11-07 | Hydraulic bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104411032A CN102913531A (en) | 2012-11-07 | 2012-11-07 | Hydraulic bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102913531A true CN102913531A (en) | 2013-02-06 |
Family
ID=47612040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104411032A Pending CN102913531A (en) | 2012-11-07 | 2012-11-07 | Hydraulic bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102913531A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291369A (en) * | 2013-06-04 | 2013-09-11 | 山东泓奥电力科技有限公司 | Coupler connecting structure applicable to switching of backpressure rotors of low-pressure cylinder |
| CN105782208A (en) * | 2016-05-06 | 2016-07-20 | 博艳萍 | Welding arm fastening screw of automatic welding machine |
| CN111962418A (en) * | 2020-08-24 | 2020-11-20 | 王关红 | Guideboard mounting support frame with wind resistance function |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB446643A (en) * | 1935-06-12 | 1936-05-04 | Anthony George Maldon Michell | Improved screw fastenings, particularly nuts and bolts |
| CN2058436U (en) * | 1989-05-16 | 1990-06-20 | 徐乃江 | Hydraulic locking nut |
| JP4072832B1 (en) * | 2007-06-12 | 2008-04-09 | 宣彦 二川 | Locking nut |
| CN201363354Y (en) * | 2009-03-06 | 2009-12-16 | 南通航海机械有限公司 | Hydraulic fitting bolt |
| CN201382067Y (en) * | 2009-05-26 | 2010-01-13 | 中信戴卡轮毂制造股份有限公司 | Connection device combined by bolt and taper sleeve |
| CN102120296A (en) * | 2011-01-25 | 2011-07-13 | 江苏拓盛重工机械有限公司 | Hydraulic preloading device of fixed bolt |
| CN203035715U (en) * | 2012-11-07 | 2013-07-03 | 武汉卡特工业股份有限公司 | Hydraulic bolt |
-
2012
- 2012-11-07 CN CN2012104411032A patent/CN102913531A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB446643A (en) * | 1935-06-12 | 1936-05-04 | Anthony George Maldon Michell | Improved screw fastenings, particularly nuts and bolts |
| CN2058436U (en) * | 1989-05-16 | 1990-06-20 | 徐乃江 | Hydraulic locking nut |
| JP4072832B1 (en) * | 2007-06-12 | 2008-04-09 | 宣彦 二川 | Locking nut |
| CN201363354Y (en) * | 2009-03-06 | 2009-12-16 | 南通航海机械有限公司 | Hydraulic fitting bolt |
| CN201382067Y (en) * | 2009-05-26 | 2010-01-13 | 中信戴卡轮毂制造股份有限公司 | Connection device combined by bolt and taper sleeve |
| CN102120296A (en) * | 2011-01-25 | 2011-07-13 | 江苏拓盛重工机械有限公司 | Hydraulic preloading device of fixed bolt |
| CN203035715U (en) * | 2012-11-07 | 2013-07-03 | 武汉卡特工业股份有限公司 | Hydraulic bolt |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291369A (en) * | 2013-06-04 | 2013-09-11 | 山东泓奥电力科技有限公司 | Coupler connecting structure applicable to switching of backpressure rotors of low-pressure cylinder |
| CN103291369B (en) * | 2013-06-04 | 2016-03-02 | 山东泓奥电力科技有限公司 | A kind of coupling linkage structure being applicable to low pressure (LP) cylinder back pressure rotor and exchanging |
| CN105782208A (en) * | 2016-05-06 | 2016-07-20 | 博艳萍 | Welding arm fastening screw of automatic welding machine |
| CN111962418A (en) * | 2020-08-24 | 2020-11-20 | 王关红 | Guideboard mounting support frame with wind resistance function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 430074, No. three, No. 03, No. 3, No. 1, No. 1, Optics Valley Road, East Lake hi tech Development Zone, Hubei, Wuhan, China Applicant after: WUHAN KATTOR INDUSTRY CO., LTD. Address before: 3 building, block B, Wenchang building, Optics Valley Road, East Lake hi tech Development Zone, Hubei, Wuhan, 430074 Applicant before: Wuhan Kattor Machinery Manufacturing Co., Ltd |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130206 |