CN214787418U - Slip casting head dropout prevention means - Google Patents
Slip casting head dropout prevention means Download PDFInfo
- Publication number
- CN214787418U CN214787418U CN202120154799.5U CN202120154799U CN214787418U CN 214787418 U CN214787418 U CN 214787418U CN 202120154799 U CN202120154799 U CN 202120154799U CN 214787418 U CN214787418 U CN 214787418U
- Authority
- CN
- China
- Prior art keywords
- rod
- slip casting
- head
- female
- grouting
- 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.)
- Expired - Fee Related
Links
- 238000007569 slipcasting Methods 0.000 title claims abstract description 36
- 230000002265 prevention Effects 0.000 title claims description 13
- 239000003673 groundwater Substances 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to the technical field of soil or rock improvement or protection, in particular to a slip casting head anti-drop device, which comprises a two-section folding rod arranged in a slip casting head, wherein the two-section folding rod comprises a female rod and a male rod which are hinged with each other, the female rod and the male rod are respectively provided with a waist hole along the length direction and are respectively connected with the slip casting head in a sliding way through a positioning rod which passes through the waist hole and is anchored on the slip casting head; when the included angle between the primary rod and the secondary rod is 180 degrees, the length of the two sections of folding rods is not less than the diameter of the hole where the grouting head is located; the side wall of the grouting head is provided with a hole for extending the female rod and the male rod, and a tensioning rope is bound on a pin shaft for connecting the female rod and the male rod. The utility model discloses in, through set up on slip casting head can be in the folding two-section folding rod of certain limit, when the slip casting head is extruded because of pressure-bearing groundwater or dead weight, the two-section folding rod opens, and the sub-pole props on the hole wall at slip casting head place, prevents the slip casting head and drops to make the slip casting accomplish smoothly.
Description
Technical Field
The utility model relates to an improvement or the protection technical field of soil or rock especially relate to a slip casting head dropout prevention means.
Background
In relation to mining or construction of underground caverns, it is often necessary to perform borehole grouting to stabilize the soil or rock, and to inject grout by inserting a grouting head into the borehole in the formation or rock formation.
The most common grouting mode is advanced small conduit grouting, and the front end of the advanced small conduit is processed into a steel perforated pipe as a grouting head. When the advanced small guide pipe is used for grouting, the diameter of a drill hole is slightly larger than that of the steel perforated pipe, so that a gap exists between the drill hole and the steel perforated pipe, the gripping force on the steel perforated pipe is very low, and the outward extrusion pressure of grout injected during grouting can be resisted only marginally.
When constructed in confined aquifers, grouting heads inserted into the formation or strata can withstand the additional extrusion pressure brought by the confined groundwater; when the construction angle is a vertical angle or an approximate vertical angle, the steel perforated pipe can be pulled out more easily due to the self weight of the grouting head; when the stratum is sandy soil, namely soil with poor gripping power, the grouting head is easy to fall off. Once the grouting head falls off, grouting fails, and can only be restarted, which wastes manpower and material resources and prolongs the construction period.
SUMMERY OF THE UTILITY MODEL
The utility model provides a slip casting head dropout prevention means.
The technical problem to be solved is that: during drilling and grouting, the grouting head may fall off due to various reasons, so that grouting is failed, manpower and material resources are wasted, and the construction period is prolonged.
In order to solve the technical problem, the utility model adopts the following technical scheme:
an anti-drop device for a grouting head is used for preventing the grouting head from being extruded by pressure-bearing underground water in the stratum or dropping due to self weight during drilling and grouting; the method is characterized in that: the grouting device comprises a two-section folding rod arranged in a grouting head, wherein the two-section folding rod comprises a female rod and a male rod which are hinged with each other, waist holes are respectively formed in the female rod and the male rod along the length direction, and the female rod and the male rod are respectively in sliding connection with the grouting head through positioning rods which penetrate through the waist holes and are anchored on the grouting head;
each positioning rod is arranged on the same cross section of the grouting head;
when the included angle between the female rod and the secondary rod is 180 degrees, the length of the two sections of folding rods is not less than the diameter of the hole where the grouting head is located; the side wall of the grouting head is provided with a hole for the extension of the female rod and the male rod;
a tensioning rope is bound on a pin shaft for connecting the female rod and the male rod.
Furthermore, the sub-rods and the main rods are long steel plates with plate surfaces parallel to each other.
Furthermore, the rotation range of the female rod and the sub-rod is limited within the range of an included angle of a-180 degrees and between the front end of the grouting head and the positioning rod; when the included angle of the female rod and the sub-rod is a degrees, the distance between the free ends of the female rod and the sub-rod is not larger than the inner diameter of the grouting head.
Further, son pole and female pole overlap joint, female pole is sunken in the position that overlaps with son pole, and the juncture of the all the other positions of concave end and female pole forms the angle and restricts the face, son pole is close to the adjacent angle of slip casting head rear end and is outer chamfer, outer chamfer props on the angle restriction face when the contained angle of son pole and female pole is a degree.
Further, the long steel plate and the axis of the grouting head are arranged in a coplanar mode.
Further, a spiral spring used for opening the two sections of folding rods is arranged between the sub rod and the female rod.
Furthermore, the free end of the secondary rod and/or the primary rod is provided with a loosening rope for conveniently pulling out the grouting head.
The utility model relates to a slip casting head dropout prevention means compares with prior art, has following beneficial effect:
the utility model discloses in, through setting up the two-section folding rod that can fold in the certain limit on slip casting head, the sub-pole of two-section folding rod returns and contracts when slip casting head inserts to allow the slip casting head to normally insert, when the slip casting head is extruded because of pressure-bearing groundwater or dead weight, the pulling taut rope makes two-section folding rod open, and the sub-pole props on the hole wall at slip casting head place, prevents the slip casting head to drop, thereby makes the slip casting accomplish smoothly.
Drawings
FIG. 1 is a schematic structural view of a grouting head with a locating rod;
FIG. 2 is a schematic structural view of the present invention when the grouting head is inserted;
FIG. 3 is a schematic structural view of the grouting head according to the present invention;
FIG. 4 is an exploded view of the two-section folding bar;
FIG. 5 is a schematic view showing the positional relationship between the two-stage folding rod and the grouting head;
the grouting device comprises a grouting head 1, a female rod 21, a male rod 22, a female rod 31, a waist hole 32, a positioning rod 41, an outer chamfer angle 42, an angle limiting surface and a tensioning rope 5.
Detailed Description
As shown in fig. 1-5, a slip casting head drop-off prevention device is used for preventing a slip casting head 1 from being extruded by pressure-bearing underground water in a stratum or dropping due to self weight during drilling and slip casting; the grouting device comprises two sections of folding rods arranged in a grouting head 1, wherein each two section of folding rods comprises a female rod 21 and a male rod 22 which are hinged with each other, waist holes 31 are respectively formed in the female rod 21 and the male rod 22 along the length direction, and the two sections of folding rods are respectively connected with the grouting head 1 in a sliding manner through positioning rods 32 which penetrate through the waist holes 31 and are anchored on the grouting head 1;
each positioning rod 32 is arranged on the same cross section of the grouting head 1;
when the included angle between the female rod 21 and the sub-rod 22 is 180 degrees, the length of the two sections of folding rods is not less than the diameter of the hole where the grouting head 1 is located; the side wall of the grouting head 1 is provided with a hole for the extension of the female rod 21 and the sub-rod 22; therefore, when the two-section folding rod is opened, the two-section folding rod can be clamped on the wall of the hole where the grouting head 1 is located, and the grouting head 1 is prevented from being pulled out.
A tensioning rope 5 is bound on a pin shaft connecting the female rod 21 and the sub-rod 22, and the tensioning rope 5 extends out of a hole where the grouting head 1 is located.
As shown in fig. 4-5, in the present embodiment, the sub-rod 22 and the main rod 21 are long steel plates with their plate surfaces parallel to each other, so as to conveniently install the angle limiting device. The long steel plate is arranged in a coplanar manner with the axis of the grouting head 1 so as to avoid influencing grouting.
The rotation range of the female rod 21 and the sub-rod 22 is limited within the range of an included angle of a-180 degrees, and when the included angle between the female rod 21 and the sub-rod 22 between the front end of the grouting head 1 and the positioning rod 32 is limited to a degree, the distance between the free ends of the female rod 21 and the sub-rod 22 is not larger than the inner diameter of the grouting head 1. That is, the two-section folding rod can only be folded towards the front end of the grouting head 1, can not be folded towards the rear end of the grouting head 1, and when the two-section folding rod is folded to the shortest, the two ends of the two-section folding rod do not exceed the grouting head 1. The grouting head 1 is not affected to be inserted, meanwhile, the tensioning rope 5 can be guaranteed to be effective, and the phenomenon that the tensioning rope 5 is ineffective due to the fact that the two sections of folding rods are folded towards the rear end of the grouting head 1 is avoided.
In this embodiment, the minimum degree a is 135, and the angle is limited by the following structure:
as shown in fig. 4-5, the sub-rod 22 is connected with the female rod 21 in an overlapping manner, the female rod 21 is recessed at a position overlapping with the sub-rod 22, an angle limiting surface 42 is formed at a junction of the recessed end and the rest of the female rod 21, one adjacent angle of the sub-rod 22 close to the rear end of the grouting head 1 is an outer chamfer 41, and the outer chamfer 41 is supported on the angle limiting surface 42 when the included angle between the sub-rod 22 and the female rod 21 is a degree. The structure is well processed, one end of the female rod 21 is hammered flat, and one corner of the male rod 22 is cut off.
If the grouting head 1 needs to be recovered, a release rope is arranged at the free end of the secondary rod 22 and/or the primary rod 21, and the two sections of folding rods can be folded by pulling and releasing the release rope after grouting.
In addition, a spiral spring for expanding the two-section folding rod can be arranged between the sub rod 22 and the female rod 21, so that the minimum angle between the sub rod 22 and the female rod 21 is not required to be limited, the tensioning rope 5 is not required to be arranged, and the grouting head 1 is not easy to pull out.
The utility model relates to a slip casting head dropout prevention means, its use includes following step:
the method comprises the following steps: the utility model is arranged on the grouting head 1; if the grouting head 1 needs to be recovered, a loose rope is tied at the free end of the sub-rod 22;
step two: and pulling the tensioning rope 5 to fix the grouting head 1 and starting grouting.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (7)
1. A slip casting head dropout prevention means, is used for preventing the slip casting head (1) from being squeezed out by the pressure-bearing groundwater in the stratum or because of the dead weight drops when the slip casting of drilling; the method is characterized in that: the grouting device comprises two sections of folding rods arranged in a grouting head (1), wherein each two section of folding rod comprises a female rod (21) and a male rod (22) which are hinged with each other, waist holes (31) are respectively formed in the female rod (21) and the male rod (22) along the length direction, and the two sections of folding rods are respectively in sliding connection with the grouting head (1) through positioning rods (32) which penetrate through the waist holes (31) and are anchored on the grouting head (1);
each positioning rod (32) is arranged on the same cross section of the grouting head (1);
when the included angle between the female rod (21) and the sub-rod (22) is 180 degrees, the length of the two sections of folding rods is not less than the diameter of the hole where the grouting head (1) is located; the side wall of the grouting head (1) is provided with a hole for the extension of the female rod (21) and the male rod (22);
a tensioning rope (5) is bound on a pin shaft connecting the female rod (21) and the sub-rod (22).
2. The slip casting head dropout prevention means of claim 1, wherein: the sub-rod (22) and the main rod (21) are long steel plates with plate surfaces parallel to each other.
3. The slip casting head dropout prevention means of claim 1, wherein: the rotation range of the female rod (21) and the sub-rod (22) is limited within the range of an included angle of a-180 degrees and between the front end of the grouting head (1) and the positioning rod (32); when the included angle between the female rod (21) and the sub-rod (22) is a degrees, the distance between the free ends of the female rod (21) and the sub-rod (22) is not larger than the inner diameter of the grouting head (1).
4. The slip casting head dropout prevention means of claim 3, characterized in that: son pole (22) and female pole (21) overlap joint, female pole (21) are sunken in the position that overlaps with son pole (22), and the intersection of the other positions of end and female pole (21) of undercut forms angle restriction face (42), son pole (22) are close to the adjacent angle of slip casting head (1) rear end and are outer chamfer (41), outer chamfer (41) shore on angle restriction face (42) when the contained angle of son pole (22) and female pole (21) is a degree.
5. The slip casting head drop preventing device according to claim 2, wherein: the long steel plate and the axis of the grouting head (1) are arranged in a coplanar manner.
6. The slip casting head dropout prevention means of claim 3, characterized in that: and a spiral spring for unfolding the two sections of folding rods is arranged between the sub rod (22) and the female rod (21).
7. The slip casting head dropout prevention means of claim 1, wherein: the free end of the sub-rod (22) and/or the main rod (21) is provided with a loosening rope for conveniently pulling out the grouting head (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120154799.5U CN214787418U (en) | 2021-01-20 | 2021-01-20 | Slip casting head dropout prevention means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120154799.5U CN214787418U (en) | 2021-01-20 | 2021-01-20 | Slip casting head dropout prevention means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214787418U true CN214787418U (en) | 2021-11-19 |
Family
ID=78748665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120154799.5U Expired - Fee Related CN214787418U (en) | 2021-01-20 | 2021-01-20 | Slip casting head dropout prevention means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214787418U (en) |
-
2021
- 2021-01-20 CN CN202120154799.5U patent/CN214787418U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |