CN107269648A - A kind of convenient expansion bolt dismantled and maintained - Google Patents
A kind of convenient expansion bolt dismantled and maintained Download PDFInfo
- Publication number
- CN107269648A CN107269648A CN201710489235.5A CN201710489235A CN107269648A CN 107269648 A CN107269648 A CN 107269648A CN 201710489235 A CN201710489235 A CN 201710489235A CN 107269648 A CN107269648 A CN 107269648A
- Authority
- CN
- China
- Prior art keywords
- kelly
- screw rod
- expansion bolt
- sleeve
- 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
- 239000000945 filler Substances 0.000 claims abstract description 27
- 239000006071 cream Substances 0.000 claims abstract description 23
- 238000002788 crimping Methods 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 34
- 210000003739 neck Anatomy 0.000 description 11
- 239000010687 lubricating oil Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- F16B13/08—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 with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation
- F16B13/0808—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 with separate or non-separate gripping parts moved into their final position in relation to the body of the device without further manual operation by a toggle-mechanism
-
- 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
- F16B33/00—Features common to bolt and nut
- F16B33/008—Corrosion preventing means
-
- 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
- F16B2013/006—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with sealing means
Abstract
The invention discloses a kind of convenient expansion bolt dismantled and maintained, including screw rod, screw head, nut, sleeve, mounting groove, first kelly, second kelly, mounting hole, first spring, annular groove, neck, crimping, shoe cream room, oil filler point, second spring and plug, the upper end integral type of the screw rod is provided with screw head, nut is threaded with the screw rod, the outside of the screw rod and positioned between screw head and nut slip cap be provided with sleeve, the outside of the screw rod and positioned at offering multiple axially extending mounting grooves along screw rod between screw head and sleeve, the first kelly and the second kelly are provided with the mounting groove, the upper end of first kelly and the upper end of mounting groove are hinged, the upper end and the free end of the first kelly of second kelly are hinged, compared with prior art, conveniently expansion bolt can be dismantled, it is convenient that oiling maintenance is carried out to expansion bolt, improve the practicality of expansion bolt, extend the service life of expansion bolt.
Description
【Technical field】
The present invention relates to standard component technical field, particularly a kind of convenient expansion bolt dismantled and maintained.
【Background technology】
Expansion bolt, be by pipeline pernetti or equipment fix on the wall, on floor, a kind of special thread used on post
Connector.Expansion bolt is generally made up of dormant bolt, expansion sleeve, plain washer, spring pad and hex nut.In use, must be first
Get out the hole of corresponding size on fixed body, then in bolt, expansion sleeve load hole, tightening nut can make bolt, expansion sleeve,
Swelling is integrally formed between installed part and fixed body.
Existing expansion bolt is to reach fixed effect using the expansion of expansion sleeve, because expansion sleeve is squeezed by bolt
It can not voluntarily recover after compressive strain, expansion bolt is difficult to pull out after installation, cause expansion bolt with must just scrap after once, make
Into the waste of ample resources, while expansion bolt is difficult to pull out also to fit up again to house and brings many troubles, in addition,
During expansion with wall very fierce friction can occur for the expansion sleeve of expansion bolt, cause the antirust paint outside expansion sleeve
All it is scraped, if expansion bolt cannot get oiling maintenance, expansion sleeve is just easily rusted over time, causes expanding screw
Bolt loosens, and causes expansion bolt Joint failure, will bring no small potential safety hazard.
【The content of the invention】
The purpose of the present invention is exactly to solve the problems of the prior art, proposes a kind of convenient expanding screw dismantled and maintained
Bolt, conveniently can be dismantled to expansion bolt, convenient to carry out oiling maintenance to expansion bolt, improve expansion bolt
Practicality, extend the service life of expansion bolt.
To achieve the above object, the present invention proposes a kind of convenient expansion bolt dismantled and maintained, including screw rod, spiral shell
Head, nut, sleeve, mounting groove, the first kelly, the second kelly, mounting hole, the first spring, annular groove, neck, crimping, oil storage
Chamber, oil filler point, second spring and plug, the upper end integral type of the screw rod, which is provided with screw head, the screw rod, is threaded with spiral shell
Mother, the outside of the screw rod and is provided with sleeve positioned at slip cap between screw head and nut, the outside of the screw rod and positioned at screw head
Offered between sleeve in multiple axially extending mounting grooves along screw rod, the mounting groove provided with the first kelly and the second card
Bar, the upper end of first kelly and the upper end of mounting groove are hinged, the upper end of second kelly and the freedom of the first kelly
End is hinged, and the lower end of second kelly and the upper end of sleeve are hinged, the bottom of the mounting groove and positioned at the first kelly
The mounting hole perpendicular to mounting groove is offered with the bottom of the articulated section of the second kelly, and being provided with the mounting hole is used for pushing tow the
First spring of one kelly and the second kelly, the upper end of the nut offers the annular groove coaxial with nut, the annular groove
Nearly heart side wall offer neck, the lower end of the sleeve is pivotally mounted in annular groove, the lower end of the sleeve be provided with
The crimping that neck is engaged by clamping, the inside of the screw rod offers shoe cream room, and the lower end of the screw rod is offered and shoe cream room phase
Logical oil filler point, the upper end of the shoe cream room is fixedly connected with the second spring corresponding with oil filler point, the second spring
Lower end is fixed with the plug for blocking oil filler point.
Preferably, the total length of first kelly and the second kelly is slightly less than the length of mounting groove, first card
Bar and the second kelly are equipped with the inside of wearing layer, the upper end of the sleeve away from the one side of mounting groove is fixed with multiple and peace
The fixture block that tankage is engaged, the lower end of second kelly is hinged with fixture block.
Preferably, the mounting hole is communicated with shoe cream room, first spring is fixedly connected with mounting hole.
Preferably, the area of the plug is more than the area of the cross section of oil filler point, the plug connects with oil filler point
Tactile one side is provided with rubber layer.
Preferably, the cross section of the screw head is circle, the quantity of the mounting groove is at least 3 and is distributed in a balanced way
In the outside portion of screw rod.
Beneficial effects of the present invention：The present invention is provided with screw head by the upper end integral type in screw rod, and screw thread connects on screw rod
Nut is connected to, sleeve is provided with the outside of screw rod and positioned at slip cap between screw head and nut, in the outside of screw rod and positioned at spiral shell
Multiple axially extending mounting grooves along screw rod are offered between head and sleeve, provided with the first kelly and the second card in mounting groove
Bar, the upper end of the first kelly and the upper end of mounting groove are hinged, and the upper end of the second kelly and the free end of the first kelly are hinged,
The lower end of second kelly and the upper end of sleeve are hinged, in the bottom of mounting groove and being hinged positioned at the first kelly and the second kelly
The bottom in portion offers the mounting hole perpendicular to mounting groove, is provided with mounting hole for the kelly of pushing tow first and the second kelly
First spring, the annular groove coaxial with nut is offered in the upper end of nut, and neck is offered in the nearly heart side wall of annular groove, set
The lower end of cylinder is pivotally mounted in annular groove, the crimping being engaged by clamping with neck is provided with the lower end of sleeve, in screw rod
Portion offers shoe cream room, and the oil filler point communicated with shoe cream room is offered in the lower end of screw rod, is fixedly connected in the upper end of shoe cream room
Have the second spring corresponding with oil filler point, the plug for blocking oil filler point be fixed with the lower end of second spring, when
When using the expansion bolt, expansion bolt hammer then can be entered into wall by screw head towards the mounting hole on wall
In mounting hole on wall, nut is then tightened with spanner clamping screw nut, nut can be up along screw rod during tightening,
Nut promotes sleeve up, the kelly of sleeve extruding first and the second kelly, the bullet of the first kelly and the second kelly in the first spring
Power effect is lower to cause the articulated section protrusion mounting groove of the first kelly and the second kelly, and now to continue to press on sleeve up for nut, makes
The articulated section of the first kelly and the second kelly is stuck in the madial wall of the mounting hole on wall, because sleeve passes through annular groove and spiral shell
Mother is rotatably assorted so that sleeve will not be with nut rotation, when needing that expansion bolt is noted during rotation for nut
When oil maintenance, oil pipe can be put in oil filler point and be pushed open plug with oil pipe, then the oil in oil pipe is injected into storage
In oil pocket, when oil pipe is pulled out, plug automatically blocks oil filler point, effectively prevents the lubricating oil in shoe cream room from outflowing, shoe cream room
Interior lubricating oil is maintained the first kelly and the second kelly from mounting hole outflow, effectively prevents expansion bolt from, by corrosion, prolonging
The service life of expansion bolt has been grown, when dismounting expansion bolt is needed, nut can be unscrewed with spanner, nut is along spiral shell
Bar is descending and descending with moving sleeve, and sleeve pulls the first kelly and the second kelly so that the articulated section of the first kelly and the second kelly
Fall into mounting groove so that expansion bolt can be smoothly removed, because crimping is engaged with neck, sleeve will not divide with nut
From, compared with prior art, conveniently expansion bolt can be dismantled, it is convenient that oiling guarantor is carried out to expansion bolt
Support, improve the practicality of expansion bolt, extend the service life of expansion bolt.
The feature and advantage of the present invention will be described in detail by embodiment combination accompanying drawing.
【Brief description of the drawings】
Fig. 1 is a kind of structural representation of the convenient expansion bolt dismantled and maintained of the present invention.
Fig. 2 is the present invention a kind of nut and the section of structure of sleeve of the convenient expansion bolt dismantled and maintained.
In figure：1- screw rods, 2- screw heads, 3- nuts, 4- sleeves, 41- fixture blocks, 5- mounting grooves, the kellies of 6- first, 7- second block
Bar, 8- mounting holes, the springs of 9- first, 10- annular grooves, 11- necks, 12- crimpings, 13- shoe cream rooms, 14- oil filler points, 15- second
Spring, 16- plugs.
【Embodiment】
Refering to Fig. 1 and 2, the present invention it is a kind of it is convenient dismantle and maintenance expansion bolt, including screw rod 1, screw head 2, nut 3,
Sleeve 4, mounting groove 5, the first kelly 6, the second kelly 7, mounting hole 8, the first spring 9, annular groove 10, neck 11, crimping 12, storage
Oil pocket 13, oil filler point 14, second spring 15 and plug 16, the upper end integral type of the screw rod 1 are provided with screw head 2, the screw rod 1
It is threaded with nut 3, the outside of the screw rod 1 and is provided with sleeve 4, the screw rod positioned at slip cap between screw head 2 and nut 3
1 outside and positioned at offering multiple axially extending mounting grooves 5 along screw rod 1, the mounting groove 5 between screw head 2 and sleeve 4
The first kelly 6 and the second kelly 7 are inside provided with, the upper end and the upper end of mounting groove 5 of first kelly 6 are hinged, described second
The upper end of kelly 7 and the free end of the first kelly 6 are hinged, and the lower end and the upper end of sleeve 4 of second kelly 7 are hinged,
The bottom of the mounting groove 5 and offered positioned at the bottom of the articulated section of the first kelly 6 and the second kelly 7 perpendicular to mounting groove 5
Mounting hole 8, the first spring 9 for pushing tow the first kelly 6 and the second kelly 7, the nut 3 are provided with the mounting hole 8
Upper end offer the annular groove 10 coaxial with nut 3, the nearly heart side wall of the annular groove 10 offers neck 11, the sleeve
4 lower end is pivotally mounted in annular groove 10, and the lower end of the sleeve 4 is provided with the crimping 12 being engaged by clamping with neck 11, institute
The inside for stating screw rod 1 offers shoe cream room 13, and the lower end of the screw rod 1 offers the oil filler point 14 communicated with shoe cream room 13, institute
The upper end for stating shoe cream room 13 is fixedly connected with the second spring 15 corresponding with oil filler point 14, and the lower end of the second spring 15 is consolidated
Fixed to be provided with the plug 16 for being used for blocking oil filler point 14, the total length of the kelly 7 of the first kelly 6 and second is slightly less than mounting groove 5
Length, the kelly 7 of the first kelly 6 and second is equipped with wearing layer, the upper end of the sleeve 4 away from the one side of mounting groove 5
Inner side be fixed with multiple fixture blocks 41 being engaged with mounting groove 5, lower end and the fixture block 41 of second kelly 7 are hinged,
The mounting hole 8 is communicated with shoe cream room 13, and first spring 9 is fixedly connected with mounting hole 8, and the area of the plug 16 is more than
The area of the cross section of oil filler point 14, the one side that the plug 16 is in contact with oil filler point 14 is provided with rubber layer, the screw head 2
Cross section is circle, and the quantity of the mounting groove 5 is at least 3 and is distributed in the outside portion of screw rod 1 in a balanced way.
The course of work of the present invention：
The present invention it is a kind of it is convenient dismantle and maintenance expansion bolt in the course of the work, when when using the expansion bolt
Wait, then can enter expansion bolt hammer in the mounting hole on wall, so by screw head 2 towards the mounting hole on wall
Nut 3 is tightened with spanner clamping screw nut 3 afterwards, nut 3 can be up along screw rod 1 during tightening, and nut 3 promotes sleeve
4 is up, and sleeve 4 extrudes the first kelly 6 and the second kelly 7, and the first kelly 6 and the second kelly 7 are acted in the elastic force of the first spring 9
Down so that the articulated section protrusion mounting groove 5 of the first kelly 6 and the second kelly 7, now to continue to press on sleeve 4 up for nut 3 so that
The articulated section of first kelly 6 and the second kelly 7 is stuck in the madial wall of the mounting hole on wall, because sleeve 4 passes through annular groove 10
It is rotatably assorted with nut 3 so that the sleeve 4 during rotation of nut 3 will not be rotated with nut 3, when needing to expanding screw
When bolt carries out oiling maintenance, oil pipe can be put in oil filler point 14 and be pushed open plug 16 with oil pipe, then by oil pipe
Oil be injected into shoe cream room 13, when oil pipe is pulled out, plug 16 automatically blocks oil filler point 14, effectively prevents in shoe cream room 13
Lubricating oil outflow, the lubricating oil in shoe cream room 13 flows out from mounting hole 8 to be maintained the first kelly 6 and the second kelly 7, is had
Effect prevents expansion bolt from, by corrosion, extending the service life of expansion bolt, when dismounting expansion bolt is needed, Ke Yiyong
Spanner unscrews nut 3, and nut 3 is descending and descending with moving sleeve 4 along screw rod 1, and sleeve 4 pulls the first kelly 6 and the second kelly 7
So that the articulated section of the first kelly 6 and the second kelly 7 is fallen into mounting groove 5 so that expansion bolt can be smoothly removed, due to
Crimping 12 is engaged with neck 11, and sleeve 4 will not be separated with nut 3, compared with prior art, can be conveniently to expansion
Bolt is dismantled, convenient to carry out oiling maintenance to expansion bolt, is improved the practicality of expansion bolt, is extended expansion bolt
Service life.
Above-described embodiment is the description of the invention, is not limitation of the invention, it is any to simple transformation of the present invention after
Scheme belong to protection scope of the present invention.
Claims (5)
1. a kind of convenient expansion bolt dismantled and maintained, it is characterised in that：Including screw rod (1), screw head (2), nut (3), set
Cylinder (4), mounting groove (5), the first kelly (6), the second kelly (7), mounting hole (8), the first spring (9), annular groove (10), neck
(11), crimping (12), shoe cream room (13), oil filler point (14), second spring (15) and plug (16), the upper end of the screw rod (1)
Integral type is provided with screw head (2), is threaded with nut (3) on the screw rod (1), the outside of the screw rod (1) and positioned at screw head
(2) slip cap is provided with sleeve (4) between nut (3), the outside of the screw rod (1) and positioned between screw head (2) and sleeve (4)
Offer and the first kelly (6) and second are provided with multiple axially extending mounting grooves (5) along screw rod (1), the mounting groove (5)
Kelly (7), the upper end and the upper end of mounting groove (5) of first kelly (6) are hinged, the upper end of second kelly (7) with
The free end of first kelly (6) is hinged, and the lower end and the upper end of sleeve (4) of second kelly (7) are hinged, described to install
The bottom of groove (5) and offered positioned at the bottom of the articulated section of the first kelly (6) and the second kelly (7) perpendicular to mounting groove (5)
Mounting hole (8), the first spring (9) for the kelly of pushing tow first (6) and the second kelly (7) is provided with the mounting hole (8),
The upper end of the nut (3) offers the annular groove (10) coaxial with nut (3), and the nearly heart side wall of the annular groove (10) is opened up
Have a neck (11), the lower end of the sleeve (4) is pivotally mounted in annular groove (10), the lower end of the sleeve (4) be provided with
The crimping (12) that neck (11) is engaged by clamping, the inside of the screw rod (1) is offered under shoe cream room (13), the screw rod (1)
End offers the oil filler point (14) communicated with shoe cream room (13), and the upper end of the shoe cream room (13) is fixedly connected with and oil filler point
(14) corresponding second spring (15), the lower end of the second spring (15) is fixed with for blocking the stifled of oil filler point (14)
Head (16).
2. a kind of convenient expansion bolt dismantled and maintained as claimed in claim 1, it is characterised in that：First kelly
(6) it is slightly less than the length of mounting groove (5), first kelly (6) and the second kelly (7) back of the body with the total length of the second kelly (7)
From mounting groove (5) one side be equipped with the inside of wearing layer, the upper end of the sleeve (4) be fixed with it is multiple with mounting groove (5)
The fixture block (41) being engaged, lower end and the fixture block (41) of second kelly (7) are hinged.
3. a kind of convenient expansion bolt dismantled and maintained as claimed in claim 1, it is characterised in that：The mounting hole (8)
Communicated with shoe cream room (13), first spring (9) is fixedly connected with mounting hole (8).
4. a kind of convenient expansion bolt dismantled and maintained as claimed in claim 1, it is characterised in that：The plug (16)
Area is more than the area of the cross section of oil filler point (14), and the one side that the plug (16) is in contact with oil filler point (14) is provided with rubber
Layer.
5. a kind of convenient expansion bolt dismantled and maintained as any one of Claims 1-4, it is characterised in that：Institute
It is circle to state the cross section of screw head (2), and the quantity of the mounting groove (5) is at least 3 and is distributed in the outer of screw rod (1) in a balanced way
Sidepiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710489235.5A CN107269648A (en) | 2017-06-24 | 2017-06-24 | A kind of convenient expansion bolt dismantled and maintained |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710489235.5A CN107269648A (en) | 2017-06-24 | 2017-06-24 | A kind of convenient expansion bolt dismantled and maintained |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107269648A true CN107269648A (en) | 2017-10-20 |
Family
ID=60069484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710489235.5A Pending CN107269648A (en) | 2017-06-24 | 2017-06-24 | A kind of convenient expansion bolt dismantled and maintained |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107269648A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413120A (en) * | 2018-03-07 | 2018-08-17 | 刘路清 | A kind of water flow indicator |
| CN110043541A (en) * | 2019-05-07 | 2019-07-23 | 哈尔滨工程大学 | A kind of bolt device of cylinder block swelling damping |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2441018A (en) * | 2006-04-25 | 2008-02-20 | Romtech Ltd | Rock bolt and method of use |
| US20100247269A1 (en) * | 2009-03-27 | 2010-09-30 | Chih-Ching Hsieh | Threaded member with antirust effect |
| CN102359463A (en) * | 2011-08-02 | 2012-02-22 | 裴志胜 | Shear expansion bolt |
| CN203035684U (en) * | 2013-02-02 | 2013-07-03 | 李苏亭 | Umbrella supporting type expansion bolt |
| CN105604057A (en) * | 2016-03-14 | 2016-05-25 | 北京科技大学 | Extension swing type anchor rod device |
| CN207049146U (en) * | 2017-06-24 | 2018-02-27 | 海盐三鑫机械有限公司 | A kind of convenient expansion bolt dismantled and maintained |
-
2017
- 2017-06-24 CN CN201710489235.5A patent/CN107269648A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2441018A (en) * | 2006-04-25 | 2008-02-20 | Romtech Ltd | Rock bolt and method of use |
| US20100247269A1 (en) * | 2009-03-27 | 2010-09-30 | Chih-Ching Hsieh | Threaded member with antirust effect |
| CN102359463A (en) * | 2011-08-02 | 2012-02-22 | 裴志胜 | Shear expansion bolt |
| CN203035684U (en) * | 2013-02-02 | 2013-07-03 | 李苏亭 | Umbrella supporting type expansion bolt |
| CN105604057A (en) * | 2016-03-14 | 2016-05-25 | 北京科技大学 | Extension swing type anchor rod device |
| CN207049146U (en) * | 2017-06-24 | 2018-02-27 | 海盐三鑫机械有限公司 | A kind of convenient expansion bolt dismantled and maintained |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413120A (en) * | 2018-03-07 | 2018-08-17 | 刘路清 | A kind of water flow indicator |
| CN110043541A (en) * | 2019-05-07 | 2019-07-23 | 哈尔滨工程大学 | A kind of bolt device of cylinder block swelling damping |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171020 |