CN112388555A - Hydraulic fastening device for draw-bar bolt - Google Patents
Hydraulic fastening device for draw-bar bolt Download PDFInfo
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- CN112388555A CN112388555A CN202011082274.1A CN202011082274A CN112388555A CN 112388555 A CN112388555 A CN 112388555A CN 202011082274 A CN202011082274 A CN 202011082274A CN 112388555 A CN112388555 A CN 112388555A
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- bolt
- eccentric shaft
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- 230000009471 action Effects 0.000 claims abstract description 5
- 241000755266 Kathetostoma giganteum Species 0.000 claims description 71
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 21
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 5
- 241001424392 Lucia limbaria Species 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 241000227287 Elliottia pyroliflora Species 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 208000004141 microcephaly Diseases 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses a hydraulic fastening device of a draw-bar bolt, which comprises a base, a connected piece, the draw-bar bolt, an eccentric shaft with a flat head, a pin shaft with a flat head sleeve and a hydraulic cylinder, wherein the base and the connected piece are arranged in a contact manner. Under the action of the hydraulic cylinder, the pull rod bolt is fastened through the matching of the flat-headed sleeve and the flat-headed eccentric shaft, and the pretightening force is kept unchanged through the matching of the flat-headed sleeve and the flat-headed eccentric shaft.
Description
Technical Field
The application relates to the technical field of hydraulic pressure, especially, relate to a hydraulic fastening device of stay bolt.
Background
In the metallurgical steel rolling industry, the vibration is large during production, so that the fastening of bolts of connecting parts is very important, and in order to ensure that the foundation bolts of important parts are not loosened under the working condition that the foundation bolts of the important parts are vibrated during continuous production, a hydraulic wrench, a torque wrench, a bolt stretcher and flame heating are generally used for pre-tightening the foundation bolts; however, in some special occasions, some foundation bolts at important parts need to be rapidly and frequently disassembled, reassembled and fastened, so that the stay bolt can be used, but the stay bolt cannot be fastened by using a special tool due to the limitation of insufficient surrounding spatial positions, and therefore, the enough pretightening force of the stay bolt cannot be provided.
Disclosure of Invention
The invention provides a hydraulic fastening device for a draw-bar bolt, which aims to solve or partially solve the technical problem that the draw-bar bolt cannot be fastened by using a special tool because the draw-bar bolt is limited by insufficient surrounding spatial position, so that sufficient pre-tightening force cannot be provided for the draw-bar bolt. Can guarantee to be subject to under the not enough circumstances that leads to the stay bolt that can not use specialized tool to fasten of surrounding spatial position, realize fastening the stay bolt fast to stay bolt's pretightning force is unchangeable in the use, does not need regular fastening and vibration can not transmit the pneumatic cylinder.
In order to solve the above technical problems, the present invention provides a hydraulic fastening device for a stay bolt, comprising:
the connecting device comprises a base and a connected piece which are arranged in a contact manner, wherein groove-shaped structures are arranged in the base and the connected piece;
a draw bolt disposed in the channel; one end of the pull rod bolt penetrates through the groove-shaped structure and is connected with the connected piece, and the other end of the pull rod bolt is connected with the eccentric part of the eccentric shaft with the flat head;
the hydraulic cylinder is fixed on the base; a piston rod of the hydraulic cylinder is connected with a pin shaft with a flat head sleeve through a connecting assembly, and the pin shaft with the flat head sleeve is connected with the flat head end of the eccentric shaft with the flat head in an inserting manner and is in clearance fit with the flat head end;
and under the action of the hydraulic cylinder, the pull rod bolt is fastened through the matching of the flat-headed sleeve and the flat-headed eccentric shaft.
Preferably, one end of the draw bar bolt is assembled with the nut, and the rotation stopping pin shaft is installed.
Preferably, the hydraulic cylinder is fixed on the base through the matching of a trunnion and a trunnion bearing seat;
a piston rod of the hydraulic cylinder is connected with a connecting rod through a hydraulic cylinder pin shaft, and the connecting rod is connected with the shaft end of the pin shaft with the flat head sleeve through a key groove;
the eccentric part of the eccentric shaft with the flat head descends along the extending direction of the piston rod of the hydraulic cylinder, the gap between the eccentric part and the lower part of the pull rod bolt hole is 0, and the pull rod bolt is fastened; and in the retraction direction of the piston rod of the hydraulic cylinder, the eccentric part with the flat head eccentric shaft rises, the gap between the eccentric part and the upper part of the pull rod bolt hole is 0, and the pull rod bolt is loosened.
Preferably, the projection directions of the central line of the pin shaft with the flat head sleeve and the central line of the key slot are superposed, the horizontal direction is parallel, and the two working surfaces of the sleeve and the two working surfaces of the key slot are parallel;
preferably, a first mechanical limit stop is arranged at the bottom of the connecting rod, and a second mechanical limit stop is arranged on the base to prevent the connecting rod from being overturned excessively; the projection directions of the hole center of the connecting rod and the center of the key groove are overlapped, and the horizontal directions are parallel.
Preferably, the eccentric shaft with the flat head penetrates through a large-head copper sleeve and a small-head copper sleeve which are fixed in a shaft hole of the base, and the flat head end of the eccentric shaft with the flat head is in plug-in connection with a sleeve of a pin shaft with a flat head sleeve;
the large-head end face of the eccentric shaft with the flat head is provided with a threaded hole, the large-head copper sleeve and the small-head copper sleeve are convenient to replace after being detached by using a special tool, and the large-head end and the small-head end of the eccentric shaft are fixed in the shaft hole of the base.
Preferably, a gap is reserved between the lower part of an earring at the other end of the pull rod bolt and the base, and gaps are reserved between the two sides of the earring and between the large-head copper sleeve and the small-head copper sleeve, so that the loosened earring can rotate by taking the eccentric part of the eccentric shaft with the flat head as an axis to separate the base and the connected piece;
the diameter of an ear ring of the draw-bar bolt is larger than that of the eccentric part of the eccentric shaft with the flat head.
Preferably, the large end of the eccentric shaft with the flat head is provided with a square pillow block, so that the flat head end of the eccentric shaft with the flat head can be inserted into the pin shaft with the flat head sleeve, and the pin shaft with the flat head sleeve can rotate at an angle out of alignment.
Preferably, the flat head end of the eccentric shaft with the flat head is of a spline structure, and the sleeve of the pin shaft with the flat head sleeve is of a spline groove structure.
The invention also provides a fastening method of the stay bolt, which is used for fastening by using the hydraulic fastening device of the stay bolt in any technical scheme.
Through one or more technical schemes of the invention, the invention has the following beneficial effects or advantages:
the invention discloses a hydraulic fastening device of a draw-bar bolt, which comprises a base, a connected piece, the draw-bar bolt, an eccentric shaft with a flat head, a pin shaft with a flat head sleeve and a hydraulic cylinder, wherein the base and the connected piece are arranged in a contact manner. Under the action of the hydraulic cylinder, the pull rod bolt is fastened through the matching of the flat-headed sleeve and the flat-headed eccentric shaft, and the pretightening force is kept unchanged through the matching of the flat-headed sleeve and the flat-headed eccentric shaft.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1-2 show a schematic structural view of a hydraulic fastening device of a stay bolt according to an embodiment of the present invention;
FIG. 3 shows a schematic view of a removal tool according to one embodiment of the present invention;
4A-4B illustrate a linkage according to one embodiment of the present invention;
5A-5B illustrate a schematic view of a flatheaded eccentric shaft according to one embodiment of the present invention;
6A-6B illustrate pin diagrams of a flatheaded sleeve according to one embodiment of the present invention;
fig. 7A-7B show a stay bolt schematic according to one embodiment of the invention.
Description of reference numerals: the device comprises a small-end copper sleeve 1, a large-end copper sleeve 2, a base 3, a pull rod bolt 4, a groove-shaped structure 5, a connected piece 6, a nut 7, a rotation stopping pin shaft 8, a hydraulic cylinder 9, a trunnion 10 bearing seat 11, a hydraulic cylinder pin shaft 12, a connecting rod 13, a key groove 14, a pin shaft 15 with a flat-end sleeve and an eccentric shaft 16 with a flat end.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
The embodiment of the invention discloses a hydraulic fastening device for a stay bolt 4, which mainly utilizes the characteristics that the hydraulic fastening device has small volume, light weight and compact structure, is easy to obtain large force or moment, is easy to realize quick and stable movement and keeps good power transmission, and the hydraulic cylinder 9 drives an eccentric shaft with a flat head at an important part of the stay bolt 4 which needs to be frequently disassembled and assembled to realize the quick and frequent disassembly and fastening of the stay bolt 4 and provide enough and continuous pretightening force, and the pretightening force of the stay bolt 4 is not changed in the production process without being periodically fastened and the vibration can not be transmitted to the hydraulic cylinder 9.
In addition, since the position space of the nut 7 of the connected member 6 is narrow, the space is limited and the bolt cannot be fastened with a special tool; the draw bar bolt 4 passes through the U-shaped grooves of the base 3 and the connected piece 6 and can rotate by taking the eccentric part of the eccentric shaft as the circle center after loosening, so that the base 3 is separated from the connected piece 6.
In a specific configuration, with reference to fig. 1-2, the hydraulic fastening device of the stay bolt 4 comprises:
the base 3 and the connected piece 6 are arranged in contact, and the base 3 and the connected piece 6 are both provided with groove-shaped structures. For example, a U-shaped groove structure, and the base 3 with the U-shaped groove and the connected piece 6 with the U-shaped groove are connected and fastened through a pull rod bolt 4 and a nut 7, wherein the pull rod bolt 4 and the nut 7 are assembled and then are punched and then are transmitted into a rotation stopping pin shaft 8.
Particularly, be equipped with the shaft hole in the lower part of base 3, the internal diameter of through-hole the inside is not of uniform size, can be used to place major part copper sheathing 2, microcephaly copper sheathing 1 and stay bolt 4.
And the stay bolt 4 is arranged in the groove-shaped structure 5. One end of the draw bolt 4 is connected to penetrate through the groove-shaped structure 5 and is connected with the connected piece 6, and the other end of the draw bolt 4 is connected with the eccentric part with the flat head eccentric shaft 16.
Specifically, referring to fig. 7A-7B, there is a schematic view of the stay bolt 4.
The draw bolt 4 is in a groove structure 5, one end of which is assembled with a nut 7 and is provided with a rotation-stopping pin shaft 8. The lower part of the earring at the other end is positioned in the shaft hole of the base 3 and is positioned between the big-end copper sleeve 2 and the small-end copper sleeve 1.
A gap is reserved between the lower part of the earring and the base 3, and gaps are reserved between the two sides of the earring and the large-head copper sleeve 2 and between the two sides of the earring and the small-head copper sleeve 1, so that the earring can rotate around the eccentric part with the flat-head eccentric shaft 16 as an axis after loosening, and the base 3 and the connected piece 6 are separated.
The diameter of the lug ring of the draw-bar bolt 4 is larger than the diameter of the eccentric part of the eccentric shaft 16 with a flat head.
The hydraulic cylinder 9 is fixed on the base 3; the piston rod of the hydraulic cylinder 9 is connected with a pin shaft 15 with a flat head sleeve through a connecting assembly, and the pin shaft 15 with the flat head sleeve is connected with a flat head end of an eccentric shaft 16 with a flat head in an inserting mode and in clearance fit. Specifically, the connection parts are in clearance fit with each other in the upper, lower, left and right directions (the flat head is in clearance fit with the sleeve).
Under the action of the hydraulic cylinder 9, the draw-bar bolt 4 can be fastened through the matching of the flat-headed sleeve and the flat-headed eccentric shaft 16, the pressure of a rod cavity of the hydraulic cylinder 9 is kept unchanged in the process, and then the pretightening force of the draw-bar bolt 4 is kept unchanged through the matching of the flat-headed sleeve and the flat-headed eccentric shaft 16. In addition, the draw-bar bolt 4 can be loosened by matching the flat-headed sleeve with the flat-headed eccentric shaft 16, so that the draw-bar bolt 4 rotates by taking the eccentric part of the flat-headed eccentric shaft 16 as the axis to separate the base 3 from the connected piece 6.
It can be seen that the hydraulic cylinder 9 drives the eccentric shaft to realize quick detachment and fastening of the stay bolt 4, and the pretightening force of the stay bolt 4 is unchanged in the use process, so that the stay bolt 4 does not need to be fastened regularly. Further, after the stay bolt 4 is fastened, the pressure of the rod cavity of the hydraulic cylinder 9 is kept constant, and continuous fastening force is provided.
If vibration exists above the connected piece 6 (for example, if the connected piece 6 is a roller way frame, and a conveying roller way is fixed above the roller way frame, the vibration can be generated), the vibration cannot be transmitted to the hydraulic cylinder 9.
Specifically, the connecting assembly includes a link 13 (see fig. 4A-4B), a key slot 14.
Specifically, the hydraulic cylinder 9 is fixed on the base 3 through the cooperation of the trunnion 10 and the trunnion bearing seat 11. The piston rod of the hydraulic cylinder 9 is connected with one side of a connecting rod 13 through a hydraulic cylinder pin shaft 12, and the other side of the connecting rod 13 is connected with the shaft end of a pin shaft 15 with a flat head sleeve through a key groove 14.
As an alternative embodiment, a first mechanical limit stop is arranged at the bottom of the connecting rod 13, and a second mechanical limit stop is arranged on the base 3 to prevent the connecting rod from being overturned excessively; the hole center of the connecting rod 13 and the center projection direction of the key groove 14 are overlapped, and the horizontal direction is parallel.
Wherein, the piston rod of the hydraulic cylinder 9 extends out, the eccentric part of the eccentric shaft 16 with the flat head descends, the gap between the eccentric part and the lower part of the hole of the draw-bar bolt 4 is 0, and the draw-bar bolt 4 is fastened; in the retraction direction of the piston rod of the hydraulic cylinder 9, the eccentric part with the flat head eccentric shaft 16 rises, the gap between the eccentric part and the upper part of the hole of the draw-bar bolt 4 is 0, and the draw-bar bolt 4 is loosened.
For a pin 15 with a flat-headed sleeve, see fig. 6A-6B, one end is the shaft end and the other end is the sleeve. The projection directions of the central line of the pin shaft 15 with the flat head sleeve and the central line of the key groove 14 are superposed, the horizontal directions are parallel, and the two working surfaces of the sleeve are parallel to the two working surfaces of the key groove 14.
For the eccentric shaft with the flat head, referring to fig. 5A-5B, the eccentric shaft with the flat head passes through the large-head copper sleeve 2 and the small-head copper sleeve 1 which are fixed in the shaft hole of the base 3, and the flat head end of the eccentric shaft 16 with the flat head is connected with the sleeve of the pin shaft 15 with the flat head sleeve in an inserting way. Just so constitute a complete actuating mechanism, realize quick, frequent dismantlement, fastening stay bolt 4 to can realize providing sufficient, the continuous pretightning force of stay bolt 4: the eccentric part of the eccentric shaft descends along the extending direction of a piston rod of the hydraulic cylinder 9, the gap between the eccentric shaft and the lower part of the hole of the draw-bar bolt 4 is 0, and the draw-bar bolt 4 is fastened; the piston rod of the hydraulic cylinder 9 retracts, the eccentric shaft part rises, the gap between the eccentric shaft part and the upper part of the hole of the draw-bar bolt 4 is 0, the draw-bar bolt 4 is loosened, the draw-bar bolt 4 rotates towards the outer side of the U-shaped groove by taking the eccentric shaft part as the shaft center after the draw-bar bolt 4 is loosened, the base 3 is separated from the connected piece 6, and then the connected piece 6 can be detached.
It can be seen that the device of this embodiment can realize quick, frequent dismantlement, the fastening of stay bolt 4 to provide sufficient, lasting pretightning force, stay bolt 4 pretightning force is unchangeable in the production process, does not need regular fastening and vibration can not transmit pneumatic cylinder 9.
In addition, the end face of the big end of the eccentric shaft 16 with the flat head is provided with a threaded hole, so that the big end copper bush 2 and the small end copper bush 1 can be conveniently replaced after being detached by using a special tool (see fig. 3), and the big end and the small end of the eccentric shaft are fixed in the axial hole of the base 3.
Furthermore, the large end of the eccentric shaft 16 with the flat head is provided with a square pillow block, so that the flat head end of the eccentric shaft 16 with the flat head can be conveniently inserted into the sleeve of the pin shaft 15 with the flat head sleeve to rotate at an angle out of alignment.
As an alternative embodiment, the flat end of the eccentric shaft 16 with flat head is spline structure, and the sleeve of the pin 15 with flat head sleeve is spline groove structure.
Based on the same inventive concept, the present embodiment discloses a fastening method of a stay bolt, which is applied to the hydraulic fastening device of the stay bolt of any one of the above embodiments for fastening. The specific implementation principle has been described above, and therefore, the detailed description thereof is omitted.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A hydraulic fastening device for a stay bolt, comprising:
the connecting device comprises a base and a connected piece which are arranged in a contact manner, wherein groove-shaped structures are arranged in the base and the connected piece;
a draw bolt disposed in the channel; one end of the pull rod bolt penetrates through the groove-shaped structure and is connected with the connected piece, and the other end of the pull rod bolt is connected with the eccentric part of the eccentric shaft with the flat head;
the hydraulic cylinder is fixed on the base; a piston rod of the hydraulic cylinder is connected with a pin shaft with a flat head sleeve through a connecting assembly, and the pin shaft with the flat head sleeve is connected with the flat head end of the eccentric shaft with the flat head in an inserting manner and is in clearance fit with the flat head end;
and under the action of the hydraulic cylinder, the pull rod bolt is fastened through the matching of the flat-headed sleeve and the flat-headed eccentric shaft.
2. The hydraulic fastener of claim 1, wherein one end of the stay bolt is fitted with a nut and a rotation stopping pin is installed.
3. A hydraulic fastening device according to claim 1 wherein the hydraulic cylinder is secured to the base by the cooperation of a trunnion and a trunnion bearing mount;
a piston rod of the hydraulic cylinder is connected with a connecting rod through a hydraulic cylinder pin shaft, and the connecting rod is connected with the shaft end of the pin shaft with the flat head sleeve through a key groove;
the eccentric part of the eccentric shaft with the flat head descends along the extending direction of the piston rod of the hydraulic cylinder, the gap between the eccentric part and the lower part of the pull rod bolt hole is 0, and the pull rod bolt is fastened; and in the retraction direction of the piston rod of the hydraulic cylinder, the eccentric part with the flat head eccentric shaft rises, the gap between the eccentric part and the upper part of the pull rod bolt hole is 0, and the pull rod bolt is loosened.
4. The hydraulic fastener of claim 3, wherein the pin of the flatheaded sleeve, the sleeve centerline and the keyway centerline projection are coincident and parallel horizontally, and the two faces of the sleeve and the two faces of the keyway are parallel.
5. A hydraulic fastener device according to claim 3, wherein a first mechanical limit stop is provided at the bottom of said connecting rod, and a second mechanical limit stop is provided on said base to prevent over-rotation; the projection directions of the hole center of the connecting rod and the center of the key groove are overlapped, and the horizontal directions are parallel.
6. The hydraulic fastening device according to claim 3, wherein the eccentric shaft with the flat head passes through a large copper sleeve and a small copper sleeve which are fixed in the shaft hole of the base, and the flat head end of the eccentric shaft with the flat head is connected with the sleeve of the pin shaft with the flat head sleeve in an inserting way;
the large-head end face of the eccentric shaft with the flat head is provided with a threaded hole, the large-head copper sleeve and the small-head copper sleeve are convenient to replace after being detached by using a special tool, and the large-head end and the small-head end of the eccentric shaft are fixed in the shaft hole of the base.
7. Hydraulic fastening device according to claim 6,
a gap is reserved between the lower part of an earring at the other end of the pull rod bolt and the base, and gaps are reserved between the two sides of the earring and between the large-head copper sleeve and the small-head copper sleeve, so that the pull rod bolt can rotate by taking the eccentric part with the flat-head eccentric shaft as an axis after being loosened, and the base and the connected piece are separated;
the diameter of an ear ring of the draw-bar bolt is larger than that of the eccentric part of the eccentric shaft with the flat head.
8. The hydraulic fastening device according to claim 6, wherein the large end of the eccentric shaft with a flat head is provided with a square pillow block to facilitate the insertion of the flat end of the eccentric shaft with a flat head into the sleeve of the pin shaft with a flat head sleeve to rotate at an angle out of alignment.
9. The hydraulic fastening device according to claim 1, wherein the nose end of the eccentric shaft with nose is of a spline structure, and the sleeve of the pin of the sleeve with nose is of a spline groove structure.
10. A method of tightening a stay bolt by using a hydraulic tightening device for a stay bolt according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082274.1A CN112388555B (en) | 2020-10-12 | 2020-10-12 | Hydraulic fastening device for draw-bar bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082274.1A CN112388555B (en) | 2020-10-12 | 2020-10-12 | Hydraulic fastening device for draw-bar bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112388555A true CN112388555A (en) | 2021-02-23 |
| CN112388555B CN112388555B (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011082274.1A Active CN112388555B (en) | 2020-10-12 | 2020-10-12 | Hydraulic fastening device for draw-bar bolt |
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| Country | Link |
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| CN (1) | CN112388555B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4095448A (en) * | 1976-02-20 | 1978-06-20 | Schloeman-Siemag Aktiengesellschaft | Roll housing of divided construction with removable housing cap |
| CN101890699A (en) * | 2010-05-22 | 2010-11-24 | 东方电气集团东方汽轮机有限公司 | Stay bolt adjusting mechanism of gas turbine pull rod type rotor and operating method thereof |
| CN105127949A (en) * | 2015-09-18 | 2015-12-09 | 中国海洋石油总公司 | Hydraulic separation tool for flanges |
| CN206972711U (en) * | 2017-06-13 | 2018-02-06 | 贵州航天精工制造有限公司 | A kind of stay-bolt |
| CN108131373A (en) * | 2018-02-08 | 2018-06-08 | 张丽 | A kind of application method of short-tail staking fastening kit, dismantling device and dismantling device |
-
2020
- 2020-10-12 CN CN202011082274.1A patent/CN112388555B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4095448A (en) * | 1976-02-20 | 1978-06-20 | Schloeman-Siemag Aktiengesellschaft | Roll housing of divided construction with removable housing cap |
| CN101890699A (en) * | 2010-05-22 | 2010-11-24 | 东方电气集团东方汽轮机有限公司 | Stay bolt adjusting mechanism of gas turbine pull rod type rotor and operating method thereof |
| CN105127949A (en) * | 2015-09-18 | 2015-12-09 | 中国海洋石油总公司 | Hydraulic separation tool for flanges |
| CN206972711U (en) * | 2017-06-13 | 2018-02-06 | 贵州航天精工制造有限公司 | A kind of stay-bolt |
| CN108131373A (en) * | 2018-02-08 | 2018-06-08 | 张丽 | A kind of application method of short-tail staking fastening kit, dismantling device and dismantling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112388555B (en) | 2022-07-15 |
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