CN106884837B - Expansion bolt capable of being taken out easily and being reused - Google Patents
Expansion bolt capable of being taken out easily and being reused Download PDFInfo
- Publication number
- CN106884837B CN106884837B CN201710202191.3A CN201710202191A CN106884837B CN 106884837 B CN106884837 B CN 106884837B CN 201710202191 A CN201710202191 A CN 201710202191A CN 106884837 B CN106884837 B CN 106884837B
- Authority
- CN
- China
- Prior art keywords
- expansion
- screw
- expansion sleeve
- screw rod
- sleeve
- 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.)
- Active
Links
- 238000005538 encapsulation Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 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
- F16B13/06—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
- F16B13/065—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 the screw, nail or the like
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Abstract
The invention discloses an expansion bolt which is easy to take out and capable of being recycled, and the expansion bolt comprises a screw rod (1) and an expansion sleeve (2), wherein one end of the screw rod (1) is provided with a forward thread (1 a), the other end of the screw rod is provided with a reverse thread (1 b), the expansion sleeve (2) is packaged on the screw rod (1), the middle part of the expansion sleeve (2) is provided with an expansion opening (2 a), and the inner walls of the two ends of the expansion sleeve (2) are respectively provided with threads matched with the forward thread and the reverse thread at the two ends of the screw rod (1). The expansion bolt provided by the invention has the advantages of simple structure, convenience in use, firmness in fixation, convenience in taking out, no damage to the structure and capability of recycling.
Description
Technical Field
The invention belongs to the technical field of bolts, and particularly relates to an expansion bolt which is easy to take out and can be reused.
Background
At present, the principle of expansion bolts in the market is that after the expansion bolts are punched into holes on the ground or a wall surface, nuts 1c on the expansion bolts are screwed by using a spanner, the bolts go outwards, the outer expansion sleeve is still, and then the large head (conical head) under the bottom of a screw rod 1 expands the expansion sleeve 2 to enable the expansion sleeve to expand the whole mounting hole, and at the moment, the expansion bolts are fixed, as shown in fig. 1. If the wall is to be taken out, the wall is difficult to take out, and the wall is sometimes damaged to take out. It would be much more convenient than the prior art designs if an expansion bolt could be envisaged that was not only firmly secured in use but also easily removed.
The Chinese patent with the application number of CN201520684502.0 discloses an expansion bolt, which comprises a countersunk head screw rod and an expansion pipe, wherein the rear part of the countersunk head screw rod is provided with threads, a plurality of expansion openings are formed in the side wall of the rear part of the expansion pipe, a plurality of embedded notches are formed in the front part of the expansion pipe, and the rear part of the countersunk head screw rod extends into the expansion pipe from the front part of the expansion pipe; the rear part of the countersunk head screw rod is also provided with an expansion ring which is in a frustum shape, the expansion ring is internally provided with a threaded hole penetrating through the front end face and the rear end face of the expansion ring, and the expansion ring is in threaded fit with the countersunk head screw rod. The countersunk screw is operated to rotate, but because the expansion ring at the rear part of the countersunk screw rubs with the side wall of the expansion pipe, the expansion ring is in threaded fit with the countersunk screw, the expansion ring has axial displacement relative to the countersunk screw, namely, the expansion ring moves towards the front part of the countersunk screw, the rear part of the expansion ring gradually stretches into the expansion pipe, and the side wall at the rear part of the expansion pipe is expanded, so that the purpose of expansion is achieved. The expansion bolt has a complex structure, is inconvenient to take out, and cannot be recycled even if the expansion bolt can be taken out.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the expansion bolt which is easy to take out and can be recycled, and the novel expansion bolt is more stable in use and easy to take out completely when not in use.
The technical scheme of the invention is as follows: the expansion bolt easy to take out and capable of being recycled comprises a screw rod 1 and an expansion sleeve 2, and is characterized in that one end of the screw rod 1 is provided with a forward thread 1a, and the other end is provided with a reverse thread 1b; the screw rod 1 is packaged with an expansion sleeve 2, an expansion opening 2a is formed in the middle of the expansion sleeve 2, and threads matched with forward threads and reverse threads at two ends of the screw rod 1 are respectively formed on the inner walls at two ends of the expansion sleeve 2. The expansion sleeve is made of a metallic material, and a metal of suitable hardness and elasticity can be selected as desired.
Further, an object fixing member 1d is provided at one end of the screw 1.
Further, the object fixing member 1d is in a bent hook shape or a screw shape. After the expansion bolts are installed, the object can be hung on the object holder 1d.
Further, a nut 1c is arranged at one end of the screw 1, and the nut 1c and the screw 1 are fixed into a whole.
Further, the nut 1c is provided with a groove 3 at an end remote from the screw 1, the groove 3 being connected with the object holder 1d.
Further, 3 to 6 expansion openings are arranged on the expansion sleeve 2, and the length of each expansion opening is 3 to 15cm.
Further, 3 to 6 expansion openings are arranged on the expansion sleeve 2, the length of each expansion opening is 3 to 15cm, and the length of the expansion sleeve and the length of each expansion opening can be modified and set according to actual needs.
Further, the screw 1 and the expansion sleeve 2 are formed by one-step encapsulation, and the positive and negative screw teeth of the expansion sleeve 2 are matched with the positive and negative screw teeth of the screw. When the expansion sleeve is packaged on the screw 1, one half of the expansion sleeve matched with the screw teeth at the upper part of the screw is sleeved on the screw, then the other half of the expansion sleeve is sleeved at the lower part of the screw, the joint parts of the two half of the expansion sleeve are connected in a spot welding mode, an expansion opening can be formed after the expansion sleeve is packaged on the screw, and the expansion opening can be formed first and then the expansion sleeve is packaged on the screw.
The working principle of the invention is as follows: the expansion bolt mainly comprises a screw 1 and an expansion sleeve 2, wherein the two ends of the screw 1 are respectively provided with a forward thread 1a, a reverse thread 1b, a nut 1c and an object fixing piece 1d. The middle part of the expansion sleeve 2 is provided with an expansion opening 2a, and the inner walls of the two ends of the expansion sleeve 2 are respectively provided with threads matched with the forward thread teeth and the reverse thread teeth of the two ends of the screw rod 1. The edge of the expansion sleeve 2 can be pressed with a plurality of teeth, the teeth are convenient to contact with a plurality of protrusions on two surfaces of the nut 1c, and the protrusions on the surface of the nut 1c are contacted with the teeth on the edge of the expansion sleeve 2, so that the expansion sleeve 2 can be driven to rotate. During processing and production, the expansion sleeve 2 with the positive and negative screw teeth inside is packaged on the screw rod 1 at one time, so that the expansion bolt which is easy to take out and can be reused is formed.
When the expansion bolt is used, one end of the whole expansion bolt is inserted into a pre-punched mounting hole, then the screw 1 is rotated clockwise, and as the rotation directions of the screw forward screw thread 1a and the screw reverse screw thread 1b are opposite, the expansion sleeve 2 generates axial displacement towards the middle, namely the upper part of the expansion sleeve 2 and the lower part of the expansion sleeve 2 are extruded towards the center of the expansion sleeve 2, the expansion opening 2a is pre-formed in the middle of the expansion sleeve 2, at the moment, the expansion opening 2a is expanded after being extruded and expanded outwards, the expansion sleeve 2 expanded outwards is pressed towards the inner wall of the mounting hole, and the resistance is increased, so that the expansion bolt is fixed in the mounting hole, and an object to be fixed can be fixed through the object fixing piece 1d.
When the expansion sleeve is taken out, the nut 1c on the screw 1 rotates anticlockwise, and the forward thread 1a and the reverse thread 1b are just opposite, so that the upper part and the lower part of the expansion sleeve 2 are gradually stretched towards two sides until the expansion opening 2a is completely straightened, and the expansion screw can be taken out from the mounting hole. The design of the invention is not only firm in fixation, but also convenient for taking out the expansion bolts, and is more convenient than the existing design.
Compared with the prior art, the invention has the following beneficial effects: the expansion bolt provided by the invention has the advantages of simple structure, convenience in use, firmness in fixation, convenience in taking out, no damage to the structure and capability of being recycled.
Drawings
FIG. 1 is a state of use diagram of a prior art expansion bolt;
FIG. 2 is a schematic view of the structure of the screw;
FIG. 3 is a schematic illustration of the structure of an expanded casing;
FIG. 4 is a schematic view of the structure of an easily removable and reusable expansion bolt when not expanded;
FIG. 5 is a schematic view of the structure of an easily removable and reusable expansion bolt when expanded;
FIG. 6 is a view showing a state of use when the expansion bolts are not expanded;
FIG. 7 is a view showing a state of use of the expansion bolt when it is expanded;
FIG. 8 is a view showing the state of use of the expansion bolts of example 2;
FIG. 9 is a view showing the state of use of the expansion bolts of example 3;
the marks in the figure: 1-screw, 1 a-forward screw, 1 b-reverse screw, 1 c-nut, 1 d-object fixing piece, 2-expansion sleeve, 2 a-expansion opening, 3-groove.
Detailed Description
The following describes the technical scheme of the present invention in further detail with reference to the accompanying drawings and specific examples, but the present invention is not limited to the following technical scheme.
Example 1
As shown in fig. 2 to 5, the expansion bolt which is easy to take out and capable of being reused comprises a screw rod 1 and an expansion sleeve 2, one end of the screw rod 1 is provided with a forward thread 1a, the other end is provided with a reverse thread 1b, and a nut 1c is fixed at one end of the screw rod 1. The screw 1 is encapsulated with an expansion sleeve 2 internally provided with a forward thread and a reverse thread, the forward thread and the reverse thread of the expansion sleeve are matched with each other, 3-5 expansion openings are arranged on the expansion sleeve 2, and the length of each expansion opening is 3-10 cm. The distance between the end of the expansion opening 2a and the end of the expansion sleeve 2 is 1-3 cm.
The screw 1 and the expansion sleeve 2 are formed by one-step encapsulation, when in encapsulation, one half of the expansion sleeve matched with the screw teeth at the upper part of the screw is sleeved on the screw, then the other half of the expansion sleeve is sleeved at the lower part of the screw, the joint of the two half expansion sleeves is connected in a spot welding mode, an expansion opening can be formed after the expansion sleeve is encapsulated on the screw, and the expansion opening can be formed first and then the expansion sleeve is encapsulated on the screw. The expansion pipe sleeve 2 with the expansion opening can also be designed into a sheet shape during packaging, and the expansion pipe sleeve is welded after wrapping the screw rod 1 for one circle.
As shown in fig. 6 and 7, when the expansion bolt which is easy to take out and can be reused is used, the screw rod 1 and the nut 1c are rotated clockwise, and the upper part and the lower part of the expansion sleeve 2 are extruded towards the center due to the fact that the forward thread 1a and the reverse thread 1b are just opposite, at the moment, the expansion opening 2a is extruded and expanded, and then the expansion bolt is fixed in the hole. The object to be fixed can be fixed by the object fixing member 1d. When the nut 1c on the screw 1 is rotated counterclockwise, the upper and lower portions of the expansion sleeve 2 are stretched to both sides due to the fact that the forward thread 1a and the reverse thread 1b are just opposite, and at this time, the expansion opening 2a is straightened, so that the expansion bolt can be taken out from the hole.
Example 2
As shown in fig. 8, the expansion bolt capable of being taken out easily and reused comprises a screw 1 and an expansion sleeve 2, one end of the screw 1 is provided with a forward thread 1a, the other end is provided with a reverse thread 1b, a nut 1c is sleeved at one end of the screw 1, the outer end of the nut is provided with a groove 3, the groove 3 is used for connecting a solid fixing piece 1d, and the groove 3 and the connecting solid fixing piece 1d can be connected through threads.
The screw 1 is encapsulated with an expansion sleeve 2 internally provided with a forward thread and a reverse thread, the forward thread and the reverse thread of the expansion sleeve are matched with each other, 3-5 expansion openings are arranged on the expansion sleeve 2, and the length of each expansion opening is 3-10 cm. The end of the expansion opening 2a is spaced from the end of the expansion sleeve 2 by a distance of 1 to 3cm.
Example 3
As shown in fig. 9, the expansion bolt capable of being taken out easily and reused comprises a screw 1 and an expansion sleeve 2, wherein one end of the screw 1 is provided with a forward thread 1a, and the other end is provided with a reverse thread 1b. One end of the screw 1 is provided with an object fixing piece 1d, the object fixing piece 1d and the screw are fixed into a whole, and the object fixing piece 1d is in a bent hook shape. When in use, the object fixing piece is rotated, namely the screw rod can be driven to rotate, so that the expansion sleeve 2 is expanded or stretched.
The screw 1 is encapsulated with an expansion sleeve 2 internally provided with a forward thread and a reverse thread, the forward thread and the reverse thread of the expansion sleeve are matched with each other, 3-5 expansion openings are arranged on the expansion sleeve 2, and the length of each expansion opening is 3-10 cm. The end of the expansion opening 2a is spaced from the end of the expansion sleeve 2 by a distance of 1 to 3cm.
Claims (6)
1. The expansion bolt easy to take out and capable of being recycled comprises a screw rod (1) and an expansion sleeve (2), and is characterized in that one end of the screw rod (1) is provided with a forward thread (1 a), and the other end of the screw rod is provided with a reverse thread (1 b);
the screw rod (1) is encapsulated with an expansion sleeve (2), an expansion opening (2 a) is formed in the middle of the expansion sleeve (2), threads matched with forward screw teeth and reverse screw teeth at two ends of the screw rod (1) are respectively formed on the inner walls of the two ends of the expansion sleeve (2), and the expansion sleeve (2) is formed by mutually and fixedly connecting at least two half expansion sleeves;
the edge of the expansion sleeve (2) is pressed with a plurality of teeth, the teeth are contacted with a plurality of protrusions on two surfaces of the nut (1 c), and the protrusions on the surface of the nut (1 c) are contacted with the teeth on the edge of the expansion sleeve (2) to drive the expansion sleeve (2) to rotate;
one end of the screw (1) is provided with a nut (1 c), and the nut (1 c) and the screw (1) are fixed into a whole;
the screw rod (1) and the expansion sleeve (2) are formed by one-step encapsulation, during encapsulation, one half of the expansion sleeve (2) matched with the screw teeth at the upper part of the screw rod (1) is sleeved on the screw rod (1), then the other half of the expansion sleeve (2) is sleeved at the lower part of the screw rod (1), the joints of the two half of the expansion sleeve (2) are connected in a spot welding mode, an expansion opening (2 a) can be formed after the expansion sleeve (2) is encapsulated on the screw rod, and the expansion opening (2 a) can be formed firstly and then the expansion sleeve (2) is encapsulated on the screw rod (1); or the expansion sleeve (2) with the expansion opening (2 a) is designed into a sheet shape during packaging, and is welded after wrapping the screw (1) for one circle.
2. The expansion bolt which can be easily taken out and recycled according to claim 1, wherein an object fixing member (1 d) is arranged at one end of the screw (1).
3. The easily removable and reusable expansion bolt according to claim 2, wherein the object fixing member (1 d) is in the form of a bent hook or a screw.
4. An expansion bolt which can be easily taken out and reused as claimed in claim 1, characterized in that the nut (1 c) is provided with a groove (3) at the end remote from the screw (1), said groove (3) being intended for connection with an object holder (1 d).
5. The expansion bolt which is easy to take out and capable of being recycled according to claim 1, wherein 3-6 expansion openings are formed in the expansion sleeve (2), and the length of each expansion opening is 3-15 cm.
6. The easily removable and reusable expansion bolt according to claim 1, wherein the end of the expansion opening (2 a) is 1-3 cm from the end of the expansion sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710202191.3A CN106884837B (en) | 2017-03-30 | 2017-03-30 | Expansion bolt capable of being taken out easily and being reused |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710202191.3A CN106884837B (en) | 2017-03-30 | 2017-03-30 | Expansion bolt capable of being taken out easily and being reused |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106884837A CN106884837A (en) | 2017-06-23 |
| CN106884837B true CN106884837B (en) | 2023-09-01 |
Family
ID=59181228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710202191.3A Active CN106884837B (en) | 2017-03-30 | 2017-03-30 | Expansion bolt capable of being taken out easily and being reused |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106884837B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592708A (en) * | 2021-04-29 | 2022-06-07 | 深圳市凌盛电子有限公司 | Shielding-free anti-falling outer wall construction assembly in small high-rise building elevator reconstruction process |
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| EP0182565A1 (en) * | 1984-11-10 | 1986-05-28 | Hayden John Adams | Anchoring bolt |
| JP2003139118A (en) * | 2001-05-29 | 2003-05-14 | Katsuhiro Ouchi | Fastening body |
| CN1824959A (en) * | 2005-02-26 | 2006-08-30 | 李玉慧 | Easy to detach expansion bolt |
| JP2007177886A (en) * | 2005-12-28 | 2007-07-12 | Koyo Kizai Kk | Expansion type fastener |
| CN201293019Y (en) * | 2008-11-05 | 2009-08-19 | 王良忠 | Expanding bolt |
| CN101825130A (en) * | 2009-03-03 | 2010-09-08 | 郭振春 | Easily detachable expansion bolt |
| CN201679808U (en) * | 2010-03-18 | 2010-12-22 | 金城集团有限公司 | Telescopic rod |
| CN202001456U (en) * | 2011-04-25 | 2011-10-05 | 白端端 | Metal expansion screw |
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| CN203560240U (en) * | 2013-11-22 | 2014-04-23 | 冯仓武 | Novel expansion bolt |
| CN204572676U (en) * | 2015-03-02 | 2015-08-19 | 中交第四公路工程局有限公司 | A kind of expansion system of dismountable EXPANSION ANCHOR BOLTS |
| CN105299140A (en) * | 2015-09-15 | 2016-02-03 | 张金辉 | I-shaped rope fastener |
| CN205638007U (en) * | 2016-04-06 | 2016-10-12 | 浙江全瑞本科技股份有限公司 | Multi -functional hanging wheel device |
| CN205841414U (en) * | 2016-06-01 | 2016-12-28 | 宁波天辉机械有限公司 | Expanding anchor |
| CN205858897U (en) * | 2016-03-04 | 2017-01-04 | 胡有喜 | Post is swollen type expansion bolt |
| CN206655886U (en) * | 2017-03-30 | 2017-11-21 | 红塔烟草(集团)有限责任公司 | It is a kind of easily to take out the expansion bolt that reused |
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| US6746191B2 (en) * | 2001-02-06 | 2004-06-08 | Illinois Tool Works Inc. | Reusable rivet |
| US9453524B2 (en) * | 2012-03-29 | 2016-09-27 | Wingit Innovations, Llc | Mechanically biased cantilever fastener assembly |
| US10066483B2 (en) * | 2013-07-30 | 2018-09-04 | Dywidag-Systems International Pty Limited | Friction bolt assembly |
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2017
- 2017-03-30 CN CN201710202191.3A patent/CN106884837B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB776249A (en) * | 1953-02-11 | 1957-06-05 | Bayliss Jones And Bayliss Ltd | Improvements in or relating to means for obtaining an anchorage |
| GB1433249A (en) * | 1972-10-18 | 1976-04-22 | Impex Essen Vertrieb Von Werke | Expansible plugs |
| EP0182565A1 (en) * | 1984-11-10 | 1986-05-28 | Hayden John Adams | Anchoring bolt |
| JP2003139118A (en) * | 2001-05-29 | 2003-05-14 | Katsuhiro Ouchi | Fastening body |
| CN1824959A (en) * | 2005-02-26 | 2006-08-30 | 李玉慧 | Easy to detach expansion bolt |
| JP2007177886A (en) * | 2005-12-28 | 2007-07-12 | Koyo Kizai Kk | Expansion type fastener |
| CN201293019Y (en) * | 2008-11-05 | 2009-08-19 | 王良忠 | Expanding bolt |
| CN101825130A (en) * | 2009-03-03 | 2010-09-08 | 郭振春 | Easily detachable expansion bolt |
| CN201679808U (en) * | 2010-03-18 | 2010-12-22 | 金城集团有限公司 | Telescopic rod |
| CN202132333U (en) * | 2010-12-31 | 2012-02-01 | 江苏振亚特种螺钉有限公司 | Expansion bolt |
| CN202001456U (en) * | 2011-04-25 | 2011-10-05 | 白端端 | Metal expansion screw |
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| CN204572676U (en) * | 2015-03-02 | 2015-08-19 | 中交第四公路工程局有限公司 | A kind of expansion system of dismountable EXPANSION ANCHOR BOLTS |
| CN105299140A (en) * | 2015-09-15 | 2016-02-03 | 张金辉 | I-shaped rope fastener |
| CN205858897U (en) * | 2016-03-04 | 2017-01-04 | 胡有喜 | Post is swollen type expansion bolt |
| CN205638007U (en) * | 2016-04-06 | 2016-10-12 | 浙江全瑞本科技股份有限公司 | Multi -functional hanging wheel device |
| CN205841414U (en) * | 2016-06-01 | 2016-12-28 | 宁波天辉机械有限公司 | Expanding anchor |
| CN206655886U (en) * | 2017-03-30 | 2017-11-21 | 红塔烟草(集团)有限责任公司 | It is a kind of easily to take out the expansion bolt that reused |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106884837A (en) | 2017-06-23 |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lu Junping Inventor after: Liu Peng Inventor after: Wang Xiating Inventor after: Liu Wen Inventor after: Yang Jianhua Inventor after: Shen Xinquan Inventor after: Wang Weibin Inventor after: Wang Jian Inventor after: Jin Long Inventor after: Li Jianrong Inventor before: Lu Junping Inventor before: Li Jianrong Inventor before: Liu Peng Inventor before: Wang Xiating Inventor before: Liu Wen Inventor before: Yang Jianhua Inventor before: Shen Xinquan Inventor before: Yin Jian Inventor before: Wang Weibin Inventor before: Wang Jian Inventor before: Jin Long |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |