CN109737127B - Rammed earth wall back iron fixing bolt - Google Patents
Rammed earth wall back iron fixing bolt Download PDFInfo
- Publication number
- CN109737127B CN109737127B CN201811403396.9A CN201811403396A CN109737127B CN 109737127 B CN109737127 B CN 109737127B CN 201811403396 A CN201811403396 A CN 201811403396A CN 109737127 B CN109737127 B CN 109737127B
- Authority
- CN
- China
- Prior art keywords
- expansion
- bolt
- rammed earth
- earth wall
- fixing bolt
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 44
- 238000012856 packing Methods 0.000 claims description 4
- QVRVXSZKCXFBTE-UHFFFAOYSA-N n-[4-(6,7-dimethoxy-3,4-dihydro-1h-isoquinolin-2-yl)butyl]-2-(2-fluoroethoxy)-5-methylbenzamide Chemical compound C1C=2C=C(OC)C(OC)=CC=2CCN1CCCCNC(=O)C1=CC(C)=CC=C1OCCF QVRVXSZKCXFBTE-UHFFFAOYSA-N 0.000 claims 2
- 238000005553 drilling Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000005034 decoration Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Landscapes
- Dowels (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a rammed earth wall support iron fixing bolt which comprises a plurality of expansion bolts, wherein each expansion bolt comprises an expansion sleeve and a screw rod, the screw rods are arranged in the expansion sleeves, the head parts and the tail parts of the screw rods are exposed out of the expansion sleeves, the tail parts of the screw rods are provided with conical bodies, the head parts of the screw rods are provided with external threads, the tail parts of the screw rods are provided with internal threads, the expansion bolts are in head-tail threaded connection, an elastic gasket is arranged between the conical body of the previous expansion bolt and the expansion sleeve of the next expansion bolt, and the head parts of the screw rods of the foremost expansion bolts are provided with nuts and flat gaskets. The invention provides a rammed earth wall support iron fixing bolt which can reliably fix a support iron on a rammed earth wall without drilling through a wall body.
Description
Technical Field
The invention relates to a fixing bolt, in particular to a fixing bolt for a rammed earth wall support iron.
Background
In rural areas in mountainous areas where economy is not reached, houses in villages still mainly use rammed earth walls, and after the rammed earth walls are used for a long time, the wall surfaces are quite loose, so that the phenomena that household connection lines fall off or household connection line iron supports cannot be fixed and the operation and safety of the lines are influenced due to the fact that the universal fixing method of fixing the iron supports by using expansion bolts on the walls is adopted. In order to solve the problem that the support iron cannot be reliably fixed on the rammed earth wall through the expansion bolt, the conventional method is to fix the support iron through the wall-penetrating bolt, and the support iron is fixed through the wall-penetrating bolt, so that the problem that the support iron is fixed on the rammed earth wall is effectively solved.
Disclosure of Invention
The invention aims to provide a rammed earth wall support iron fixing bolt which can reliably fix a support iron on a rammed earth wall without drilling through a wall body.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a rammed earth wall back iron fixing bolt, includes a plurality of expansion bolts, every expansion bolt includes expansion sleeve and screw rod, the screw rod sets up in the expansion sleeve just the head and the afterbody of screw rod expose expansion sleeve, the afterbody of screw rod is equipped with the conical body, the head of screw rod is equipped with the external screw thread, the afterbody of screw rod is equipped with the internal thread, a plurality of expansion bolts head and the tail threaded connection are equipped with the elasticity packing ring between the conical body of preceding expansion bolt and the expansion sleeve of a back expansion bolt, and the screw head of the expansion bolt of foremost is equipped with nut and plain packing ring.
Further, the taper of the latter expansion bolt is greater than the taper of the former expansion bolt.
Further, the taper of the 1 st expansion bolt is
The taper of the 1+ n expansion bolt is
Furthermore, the lengths of the expansion sleeves are the same, and the taper of the 1 st expansion bolt cone is
The taper of the 1+ n expansion bolt is
Further, the length of the expansion sleeve of the latter expansion bolt is greater than the length of the expansion sleeve of the former expansion bolt.
Further, the length of the 1 st expansion casing is L, and the length of the 1+ nth expansion casing is L + nl.
Furthermore, the edge of the bottom of each conical body is chamfered, so that the maximum diameter of each conical body is the same.
After the technical scheme is adopted, the invention has the following advantages:
1. the use method of the rammed earth wall support iron fixing bolt comprises the following steps: the screw rod is rotated to move forwards, the expansion sleeve is pushed by each conical body to enable each expansion bolt to be fixed with the rammed earth wall in an expansion mode, and after each expansion bolt of the rammed earth wall support iron fixing bolt expands, each expansion bolt is fixed with the rammed earth wall in an expansion mode, so that the friction force between the fixing bolt and the rammed earth wall is increased, the fixing reliability of the fixing bolt and the rammed earth wall is improved, and the rammed earth wall support iron is fixed more stably; in addition, the rammed earth wall support iron fixing bolt does not need to drill through a wall body, and overcomes the defects that a through-wall bolt needs to enter a user room and damage indoor decoration.
2. When the screw rod is rotated to lead the screw rod to move forwards, and each conical body jacks the expansion sleeve, the expansion sleeve axially shortens and radially expands, and the expansion deformation of the expansion sleeve at the back is gradually reduced because the expansion sleeves at the back move forwards due to the axial deformation of a plurality of expansion sleeves at the front. In order to solve the problem, the following scheme is adopted: firstly, setting the taper of the conical body of the next expansion bolt to be larger than that of the conical body of the previous expansion bolt, so that the expansion deformation of the expansion sleeve at the back is increased; and secondly, the length of the expansion sleeve of the latter expansion bolt is greater than that of the expansion sleeve of the former expansion bolt, so that the axial deformation of the front expansion sleeve is reduced, and the large reduction of the expansion deformation of the rear expansion sleeve is avoided. The two solutions can be used independently or in parallel.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a rammed earth wall back iron fixing bolt according to a first embodiment of the present invention.
Fig. 2 is a schematic structural view of a rammed earth wall back iron fixing bolt according to a second embodiment of the present invention.
Fig. 3 is a schematic structural view of a rammed earth wall back iron fixing bolt according to a second embodiment of the present invention.
FIG. 4 is a schematic structural view of a cone in a bolt for fixing a rammed earth wall support iron according to the present invention.
The names of the components marked in the figures are as follows:
1-an expansion bolt; 101-expanding a casing; 102-a screw; 103-cone; 2-a resilient washer; 3-a nut; 4-plain washer.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples.
Example one
As shown in fig. 1, the present embodiment provides a rammed earth wall support iron fixing bolt, which includes four expansion bolts 1, each expansion bolt 1 includes an expansion casing 101 and a screw 102, the screw 102 is disposed in the expansion casing 101, and the head and the tail of the screw 102 are exposed out of the expansion casing 101, the tail of the screw 102 is provided with a conical body 103, the head of the screw 102 is provided with an external thread, the tail of the screw 102 is provided with an internal thread, the four expansion bolts 1 are in head-to-tail threaded connection, an elastic washer 2 is disposed between the conical body 103 of the previous expansion bolt 1 and the expansion casing 101 of the next expansion bolt 1, and the head of the screw 102 of the expansion bolt 1 at the frontmost end is provided with a nut 3 and a.
In this embodiment, the length of each expansion casing 101 is the same and the taper of each cone 103 is the same.
The use method of the rammed earth wall support iron fixing bolt comprises the following steps: the screw 102 is rotated so that the screw 102 advances and the conical bodies 103 push the expansion sleeve 101 open so that each expansion bolt 1 is fixed to the rammed earth wall by expansion.
After each expansion bolt of the rammed earth wall support iron fixing bolt expands, each expansion bolt is fixed with the rammed earth wall in an expanding mode, so that the friction force between the fixing bolt and the rammed earth wall is increased, the fixing reliability of the fixing bolt and the rammed earth wall is improved, and the rammed earth wall support iron is fixed more stably; the rammed earth wall support iron fixing bolt does not need to drill through a wall body, and overcomes the defects that a through-wall bolt needs to enter a user room and damage indoor decoration.
Example two
As shown in fig. 2 and 4, the embodiment provides a rammed earth wall support iron fixing bolt, which includes a plurality of expansion bolts 1, each expansion bolt 1 includes an expansion casing 101 and a screw 102, the screw 102 is disposed in the expansion casing 101, and the head and the tail of the screw 102 are exposed out of the expansion casing 101, the tail of the screw 102 is provided with a conical body 103, the head of the screw 102 is provided with an external thread, the tail of the screw 102 is provided with an internal thread, the expansion bolts 1 are in head-to-tail threaded connection, an elastic washer 2 is disposed between the conical body 103 of the previous expansion bolt 1 and the expansion casing 101 of the next expansion bolt 1, and the head of the screw 102 of the expansion bolt 1 at the frontmost end is provided with a nut 3 and a flat.
In this embodiment, the expansion casings 101 are the same length, and the taper of the taper 103 of the 1 st expansion bolt is
The taper of the 1+ n expansion bolt is
The expansion deformation of each expansion bolt is basically kept consistent, and the problems that the expansion sleeves at the back move forwards and the expansion deformation of the expansion sleeves at the back is gradually reduced due to the axial deformation of a plurality of expansion sleeves at the front are solved.
It will be appreciated that the taper of the 1 st expansion bolt is
The taper of the 1+ n expansion bolts may be set
The expansion deformation of the expansion bolt at the back is larger than that of the expansion bolt at the front, so that the problems that the expansion sleeves at the back move forwards and the expansion deformation of the expansion sleeves at the back is gradually reduced due to the axial deformation of a plurality of expansion sleeves at the front are solved. And because the expansion deformation of the expansion bolt at the back is greater than that of the expansion bolt at the front, the whole fixing bolt is conical after expansion and is not easy to pull out, so that the fixing reliability of the fixing bolt and the rammed earth wall is improved, and the support iron of the rammed earth wall is more stably fixed.
In this embodiment, the bottom edge of the tapered body 103 is chamfered so that the maximum diameter of each tapered body 103 is the same.
The use method of the rammed earth wall support iron fixing bolt comprises the following steps: the screw 102 is rotated so that the screw 102 advances and the conical bodies 103 push the expansion sleeve 101 open so that each expansion bolt 1 is fixed to the rammed earth wall by expansion. After each expansion bolt of the rammed earth wall support iron fixing bolt expands, each expansion bolt is fixed with the rammed earth wall in an expanding mode, so that the friction force between the fixing bolt and the rammed earth wall is increased, the fixing reliability of the fixing bolt and the rammed earth wall is improved, and the rammed earth wall support iron is fixed more stably; the rammed earth wall support iron fixing bolt does not need to drill through a wall body, and overcomes the defects that a through-wall bolt needs to enter a user room and damage indoor decoration.
EXAMPLE III
As shown in fig. 3 and 4, the present embodiment provides a rammed earth wall support iron fixing bolt, which includes three expansion bolts 1, each expansion bolt 1 includes an expansion casing 101 and a screw 102, the screw 102 is disposed in the expansion casing 101, and the head and the tail of the screw 102 are exposed out of the expansion casing 101, the tail of the screw 102 is provided with a conical body 103, the head of the screw 102 is provided with an external thread, the tail of the screw 102 is provided with an internal thread, the three expansion bolts 1 are connected end to end by thread, an elastic washer 2 is disposed between the conical body 103 of the previous expansion bolt 1 and the expansion casing 101 of the next expansion bolt 1, and the head of the screw 102 of the expansion bolt 1 at the frontmost end is provided with a nut 3 and a flat washer 4.
In this embodiment, the length of the 1 st expansion casing is L, and the length of the 1+ nth expansion casing is L + nl, so that the axial deformation of the expansion casing in front is reduced, the expansion deformation of the expansion casing in the rear is prevented from being greatly reduced, and the fixing strength of each expansion bolt is ensured.
In this embodiment, the taper of the taper 103 of the 1 st expansion bolt is
The taper of the 1+ n expansion bolt is
The expansion deformation of each expansion bolt is basically kept consistent, and the problems that the expansion sleeves at the back move forwards and the expansion deformation of the expansion sleeves at the back is gradually reduced due to the axial deformation of a plurality of expansion sleeves at the front are solved.
It will be appreciated that the taper of the 1 st expansion bolt is
The taper of the 1+ n expansion bolts may be set
The expansion deformation of the expansion bolt at the back is larger than that of the expansion bolt at the front, so that the problems that the expansion sleeves at the back move forwards and the expansion deformation of the expansion sleeves at the back is gradually reduced due to the axial deformation of a plurality of expansion sleeves at the front are solved. And because the expansion deformation of the expansion bolt at the back is greater than that of the expansion bolt at the front, the whole fixing bolt is conical after expansion and is not easy to pull out, so that the fixing reliability of the fixing bolt and the rammed earth wall is improved, and the support iron of the rammed earth wall is more stably fixed.
In this embodiment, the bottom edge of the tapered body 103 is chamfered so that the maximum diameter of each tapered body 103 is the same.
The use method of the rammed earth wall support iron fixing bolt comprises the following steps: the screw 102 is rotated so that the screw 102 advances and the conical bodies 103 push the expansion sleeve 101 open so that each expansion bolt 1 is fixed to the rammed earth wall by expansion. After each expansion bolt of the rammed earth wall support iron fixing bolt expands, each expansion bolt is fixed with the rammed earth wall in an expanding mode, so that the friction force between the fixing bolt and the rammed earth wall is increased, the fixing reliability of the fixing bolt and the rammed earth wall is improved, and the rammed earth wall support iron is fixed more stably; the rammed earth wall support iron fixing bolt does not need to drill through a wall body, and overcomes the defects that a through-wall bolt needs to enter a user room and damage indoor decoration.
Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.
Claims (4)
1. The utility model provides a rammed earth wall back iron fixing bolt, its characterized in that includes a plurality of expansion bolts, every expansion bolt includes expansion sleeve and screw rod, the screw rod sets up in the expansion sleeve just the head and the afterbody of screw rod expose expansion sleeve, the afterbody of screw rod is equipped with the conical body, the head of screw rod is equipped with the external screw thread, the afterbody of screw rod is equipped with the internal thread, a plurality of expansion bolt head and the tail threaded connection, be equipped with the elasticity packing ring between the conical body of preceding expansion bolt and the expansion sleeve of the last expansion bolt, the screw rod head of the expansion bolt of foremost is equipped with nut and plain packing ring, and the tapering of the conical body of the last expansion bolt is greater than the tapering of the conical body of preceding expansion bolt, and the expansion sleeve's of the next expansion bolt length is greater than the expansion sleeve's of preceding expansion bolt.
2. The rammed earth wall back iron fixing bolt of claim 1, wherein the first
The taper of the conical body of the expansion bolt is
Of 1 at
The taper of the conical body of the expansion bolt is
。
3. The rammed earth wall back iron fixing bolt of claim 2, wherein the first
The length of each expansion casing is
Of 1 at
The length of each expansion casing is
。
4. The rammed earth wall back iron fixing bolt according to claim 1, 2 or 3, wherein the bottom edges of the cones are chamfered so that the maximum diameters of the cones are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811403396.9A CN109737127B (en) | 2018-11-23 | 2018-11-23 | Rammed earth wall back iron fixing bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811403396.9A CN109737127B (en) | 2018-11-23 | 2018-11-23 | Rammed earth wall back iron fixing bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109737127A CN109737127A (en) | 2019-05-10 |
| CN109737127B true CN109737127B (en) | 2020-10-27 |
Family
ID=66358111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811403396.9A Active CN109737127B (en) | 2018-11-23 | 2018-11-23 | Rammed earth wall back iron fixing bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109737127B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2323185Y (en) * | 1996-10-14 | 1999-06-09 | 曾明海 | Internal expansion type expansion bolt |
| DE10060510A1 (en) * | 2000-12-06 | 2002-06-20 | Fischer Artur Werke Gmbh | Xings |
| CN2457392Y (en) * | 2000-12-14 | 2001-10-31 | 周荣 | Multiple section expansion bolt |
| CN2512933Y (en) * | 2002-01-14 | 2002-09-25 | 中国建筑科学研究院 | Double cone building anchor bolt |
| CN201818608U (en) * | 2010-08-31 | 2011-05-04 | 朱其春 | Novel dual-fastening expansion bolt |
| CN203560241U (en) * | 2013-11-29 | 2014-04-23 | 国家电网公司 | Expansion bolt for mounting power device |
-
2018
- 2018-11-23 CN CN201811403396.9A patent/CN109737127B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109737127A (en) | 2019-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201529892U (en) | Device for placing O-shaped seal ring | |
| CN201599289U (en) | Expansion screw with convenient disassembly | |
| CN102653089A (en) | Assembling method of hose assembly | |
| CN106838525A (en) | Quick change swelling pipeline attachment structure | |
| CN109737127B (en) | Rammed earth wall back iron fixing bolt | |
| CN207848139U (en) | A kind of hollow anchor bolt | |
| CN206555242U (en) | Rotary-preventing expansion bolt | |
| CN101694227A (en) | Full-expansion anchor bolt | |
| CN204403087U (en) | Many casing expandables bolt | |
| CN212361154U (en) | Detachable reducer union | |
| CN104819193B (en) | Invisible expansion screw suitable for multiple wall bodies | |
| CN215950071U (en) | Expansion screw | |
| CN201517537U (en) | Pipe connector | |
| CN104653209A (en) | Multistage resistance-increasing anchor rod and construction method | |
| CN202132334U (en) | Expansion screw | |
| CN202883593U (en) | Expansion bolt capable of being extracted and used repeatedly | |
| CN201080946Y (en) | Expanding bolt | |
| CN211820277U (en) | Double-pipe anchor bolt | |
| CN204505171U (en) | Guan Sitou extractor | |
| CN106640895A (en) | Double-nut screw type fixed connector based on push expansion elastic deformation | |
| CN207848135U (en) | A kind of disposable damping anchor bolt | |
| CN2596094Y (en) | Repeatedlly used expansion bolt | |
| CN110762098A (en) | Expansion bolt with clamping block | |
| CN203926275U (en) | Setscrew | |
| CN202768573U (en) | Self-drilling expansion screw |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |