CN214940200U - Soil nail end expander and soil nail applying same - Google Patents
Soil nail end expander and soil nail applying same Download PDFInfo
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- CN214940200U CN214940200U CN202120842862.4U CN202120842862U CN214940200U CN 214940200 U CN214940200 U CN 214940200U CN 202120842862 U CN202120842862 U CN 202120842862U CN 214940200 U CN214940200 U CN 214940200U
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- soil nail
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- reaming
- bearing plate
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Abstract
The utility model relates to a soil nail tip expander, it is including being used for dismantling the bearing plate of being connected with the tip of soil nail body, the articulated multiunit reaming support that is provided with in a side surface of bearing plate, multiunit reaming support is the circumference array setting, and the reaming support deviates from the one end of bearing plate and extends towards the direction extension that deviates from the bearing plate center, the reaming support is close to and is provided with the torsional spring that is used for keeping the reaming support to be the expanded state between the one end of bearing plate and the bearing plate, this application has the effect that improves the anti-drawing ability of soil nail.
Description
Technical Field
The application relates to the field of construction tools, in particular to a soil nail end expander and a soil nail applying the expander.
Background
The soil nail is widely applied to slope reinforcement construction and is a slender rod piece for reinforcing or simultaneously anchoring in-situ soil on site.
At present, most of soil nails are directly driven into soil by using a steel pipe as a nail body, and are passively stressed when the soil body is deformed by depending on the interface bonding force or friction force between the soil nail body and the soil body, and mainly bear the tensile force.
In view of the above-mentioned related technologies, the inventor believes that after the soil nail body is driven into the soil body, the soil nail is easily removed from the soil body when bearing a tensile force due to the slender rod structure, and has a defect of weak anti-pulling capability.
SUMMERY OF THE UTILITY MODEL
In order to improve the anti-drawing capacity of the soil nail, the application provides a soil nail end expander and a soil nail applying the expander.
On the one hand, the soil nail end expander that this application provided adopts following technical scheme:
the utility model provides a soil nail tip expander, can dismantle the pressure-bearing disc of being connected including being used for with the tip of soil nail body, one side surface of pressure-bearing disc articulates and is provided with multiunit reaming support, multiunit reaming support is the circumference array setting, and the one end that the reaming support deviates from the pressure-bearing disc extends towards the direction extension that deviates from the pressure-bearing disc center, and the reaming support is close to and is provided with the torsional spring that is used for keeping the reaming support to be the expanded state between one end of pressure-bearing disc and the pressure-bearing disc.
Through adopting above-mentioned technical scheme, before using the soil nail body, at first install the bearing plate in the tip of soil nail body, so that tip expander and soil nail body form fixedly, then the one end that will be equipped with the tip expander inserts the hole bottom, draw the soil nail body outward and make the reaming support extend and go into the peripheral soil body of hole bottom, the setting of torsional spring makes the soil nail body can get into the hole bottom smoothly, and can restrict the excessive rotation of reaming support at the in-process of drawing the soil nail body outward, and then make the soil nail body insert difficult follow downthehole behind the hole bottom and drop, the anti-tensile ability of drawing of soil nail has been improved.
Optionally, a threaded hole for being in threaded connection with the end of the soil nail body is formed in the center of the pressure bearing disc.
Through adopting above-mentioned technical scheme, when the installation expander, pass the screw hole with the soil nail body to it is fixed with threaded connection's mode to make soil nail body and bearing plate, therefore the simple to operate of expander, the stability after the installation is also higher.
Optionally, one end of the reaming bracket departing from the bearing disc is provided with a chamfer, and the chamfer is located at one side of the multiple groups of reaming brackets which is opposite to each other.
Through adopting above-mentioned technical scheme, after inserting the soil nail body in the hole bottom, at the in-process of last soil nail body of drawing, the reaming support can be expanded and insert in the soil body around the hole bottom, and the setting up of scarf makes in the reaming support can insert the soil body more smoothly, has further improved the anti-drawing ability behind the soil nail body insertion hole bottom.
Optionally, four sets of reaming supports are provided, and the four sets of reaming supports are arranged in an array with equal central angles along the same circumference.
Through adopting above-mentioned technical scheme, the atress of reaming support can evenly be shared in the setting of four groups of reaming supports, and after the tip of four groups of reaming supports all inserted the soil body around the hole bottom, the soil nail body was more difficult breaks away from in the hole to the tensile ability of drawing of soil nail body has been improved.
Optionally, a pointed end is fixedly arranged at the central position of one side of the pressure bearing disc, which deviates from the reaming bracket, and one end of the pointed end, which deviates from the pressure bearing disc, is sharp.
Through adopting above-mentioned technical scheme, after forming threaded connection between bearing plate and the soil nail body, say the soil nail body again and transfer the entering hole bottom, the setting up of tip makes transfer of soil nail body more smooth and easy, simultaneously, can continue to insert the soil body downwards after the tip reachs the hole bottom for the stability that the soil nail body inserted the hole bottom improves greatly.
Optionally, a communicating hole is formed in one end, facing the bearing disc, of the pointed end, the communicating hole is opposite to the threaded hole, and the edge of the communicating hole is welded and fixed with the bearing disc.
Through adopting above-mentioned technical scheme, install the tip in the in-process of soil nail body, the tip of soil nail body can insert the communicating pore of tip after passing the screw hole, consequently makes the installation of tip not receive the hindrance, and the installation is more smooth and easy.
On the other hand, the soil nail that this application provided adopts following technical scheme:
the utility model provides a soil nail, soil nail tip is provided with the external screw thread, and soil nail tip threaded connection has foretell tip expander.
By adopting the technical scheme, after the end expander is installed at the end part of the soil nail, the soil nail body is inserted into the hole bottom, and the hole expanding support is expanded and enters the soil body at the periphery of the hole bottom by pulling the soil nail body outwards, so that the anti-pulling capacity of the soil nail body is further improved.
Optionally, an inner groove is formed in the end portion of the soil nail body, and the inner groove penetrates through the inner groove along the length direction of the soil nail body.
Through adopting above-mentioned technical scheme, with the downthehole back of soil nail body insert, to the concrete of inner trough attention, inside the concrete filling soil nail body to make the intensity and the hardness of soil nail body improve greatly, treat the concrete solidification back, the soil nail body is because self weight can be located downthehole steadily, indirectly improves the anti-tensile ability of pulling out of soil nail body.
Optionally, a plurality of grout outlet holes communicated with the inner groove are formed in the circumferential surface of the soil nail body.
Through adopting above-mentioned technical scheme, to the in-process of inner tank injection concrete, partial concrete can spill over from the grout outlet and enter into downthehole to it is fixed to make to form the bonding between soil nail body and the downthehole wall, has improved the firm in connection degree between soil nail body and the downthehole wall.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the end expander is arranged at the end part of the soil nail body, so that the anti-drawing capability of the soil nail body after being inserted into the hole bottom is greatly improved;
2. the pointed end is fixed on the surface of one side of the bearing plate, so that the soil nail body is firmer and more stable after being inserted into the hole;
3. one end of the reaming support deviating from the bearing disc is provided with a chamfer, so that when the soil nail body in the insertion hole is pulled outwards, the soil nail body can be inserted into the soil body at the periphery of the bottom of the hole, and the anti-pulling capacity of the soil nail body is further improved.
Drawings
FIG. 1 is a schematic structural view of an end expander of soil nails in embodiment 1 of the present application;
FIG. 2 is a schematic structural view of an end expander of soil nails in embodiment 2 of the present application;
FIG. 3 is an exploded view of the soil nail end expander in the embodiment 2 of the present application;
FIG. 4 is a schematic view of the structure of the soil nail end expander installed at the end of the soil nail in the embodiment 3 of the present application;
fig. 5 is another schematic view of the structure of the soil nail end expander installed on the soil nail end in the embodiment 3 of the present application.
Description of reference numerals: 1. a pressure bearing disc; 11. a threaded hole; 12. a hinged mounting hole; 2. reaming the bracket; 21. a chamfer plane; 3. a torsion spring; 4. a tip; 41. a communicating hole; 5. a soil nail body; 51. an external thread; 52. an inner tank; 53. and (6) slurry outlet.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
Example 1
The embodiment of the application discloses soil nail tip expander. Referring to fig. 1, soil nail tip expander includes bearing plate 1, and bearing plate 1 is discoid, and a plurality of articulated mounting holes 12 have evenly been seted up to the circumference face of bearing plate 1, is provided with long banding reaming support 2 in the articulated mounting hole 12, and reaming support 2 forms to articulate with bearing plate 1 and link to each other, in this application embodiment, articulated mounting hole 12 has four along the circumference evenly distributed of bearing plate 1, and corresponding reaming support 2 is provided with four groups. Be provided with torsional spring 3 in the articulated mounting hole 12, torsional spring 3 and bearing plate 1 and the equal fixed connection of reaming support 2, one end that reaming support 2 deviates from bearing plate 1 is towards same one side of bearing plate 1, and torsional spring 3 is when not the pressurized state, and reaming support 2 is the expansion state of keeping away from gradually along the direction that deviates from bearing plate 1.
For dismantling fixed connection between bearing plate 1 and the soil nail body 5, in the embodiment of the application, a threaded hole 11 for the threaded connection of the soil nail body 5 is provided at the center position of the bearing plate 1.
One end of reaming support 2 departing from pressure bearing disc 1 is provided with chamfer 21, and chamfer 21 is one side of a plurality of reaming supports 2 towards pressure bearing disc 1 center.
The implementation principle of the embodiment 1 of the application is as follows: before use, the bearing disc 1 is firstly installed at the end part of the soil nail body 5, so that the soil nail body 5 and the bearing disc 1 form reliable threaded connection, and one end of the reaming bracket 2 departing from the bearing disc 1 is ensured to surround the soil nail body 5. When using this soil nail body 5, insert the hole bottom with the one end of bearing plate 1, reaming support 2 draws close and compression torsional spring 3 towards the direction that is close to soil nail body 5, inserts the hole bottom back completely when the tip of soil nail body 5, upwards promotes soil nail body 5 once more, and reaming support 2 can insert in the soil around the hole bottom under torsional spring 3's elastic restoring force effect, and setting up of scarf 21 makes reaming support 2 insert more smoothly in the soil body. Therefore, the whole soil nail body 5 can be stably kept in the hole and is not easy to pull out, and the anti-pulling performance of the soil nail body 5 after being inserted into the bottom of the hole is greatly improved.
Example 2
The present embodiment differs from the above embodiments in that: combine fig. 2 and fig. 3, one side fixed surface of bearing plate 1 is provided with tip 4, and tip 4 is located one side that bearing plate 1 deviates from reaming support 2 orientation, and the intercommunicating pore 41 has just been seted up to tip 4 to the position department of screw hole 11 to supply soil nail body 5 to pass can get into the intercommunicating pore 41 smoothly behind the screw hole 11, tip 4 and bearing plate 1 adopt welded fastening, and tip 4 deviates from the one end of bearing plate 1 and is sharp-pointed form, so that insert the hole bottom smoothly.
Example 3
The present embodiment discloses a soil nail, which comprises a soil nail body 5, as shown in fig. 4, wherein one end of the soil nail body 5 is provided with an external thread 51 for screw-fitting with the threaded hole 11 of the pressure bearing disc 1 in the above embodiments. The soil nail body 5 may be a solid circular tube or a hollow tube body which is hollow inside and has both ends penetrating in the longitudinal direction, as shown in fig. 5, an inner groove 52 penetrating through the soil nail body 5 in the longitudinal direction is formed at the end of the soil nail body 5, and when the soil nail body 5 is a hollow tube body, a plurality of grout outlet holes 53 are formed in the circumferential surface of the soil nail body 5, and the grout outlet holes 53 are communicated with the inner groove 52. After the soil nail body 5 is inserted into the hole bottom, concrete can be poured into the inner groove 52, and the concrete overflows from the grout outlet 53 and enters the hole bottom, so that the bonding strength between the soil nail body 5 and the inner wall of the hole is further improved, and the anti-pulling capacity of the soil nail body 5 is further improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. A soil nail tip expander which characterized in that: including bearing plate (1) that is used for dismantling the connection with the tip of soil nail body (5), the articulated multiunit reaming support (2) that is provided with in a side surface of bearing plate (1), multiunit reaming support (2) are the circumference array setting, and reaming support (2) deviate from the one end of bearing plate (1) and extend towards the direction extension that deviates from bearing plate (1) center, be provided with between reaming support (2) one end and bearing plate (1) that are close to bearing plate (1) and be used for keeping torsional spring (3) that reaming support (2) are the extended state.
2. The soil end expander of claim 1, wherein: the center of the pressure bearing disc (1) is provided with a threaded hole (11) which is in threaded connection with the end part of the soil nail body (5).
3. The soil end expander of claim 1, wherein: one end of the reaming bracket (2) deviating from the bearing disc (1) is provided with a chamfer (21), and the chamfer (21) is positioned on one side of the multiple groups of reaming brackets (2) which are opposite to each other.
4. The soil end expander of claim 1, wherein: four groups of chambering supports (2) are arranged, and the four groups of chambering supports (2) are arranged in an array with equal central angles along the same circumference.
5. A soil end expander according to claim 2 and wherein: one side central point department that pressure bearing dish (1) deviates from reaming support (2) is fixed and is provided with tip (4), and tip (4) deviate from the one end of pressure bearing dish (1) and be sharp-pointed form.
6. A soil end expander according to claim 5 and wherein: the end, facing the bearing disc (1), of the pointed end (4) is provided with a communicating hole (41), the communicating hole (41) is opposite to the threaded hole (11), and the edge of the communicating hole (41) is welded and fixed with the bearing disc (1).
7. A soil nail, its characterized in that: the end part of the soil nail body (5) is provided with an external thread (51), and the end part of the soil nail is in threaded connection with the soil nail end expander as claimed in any one of claims 1 to 6.
8. The earth nail of claim 7, wherein: an inner groove (52) is formed in the end portion of the soil nail body (5), and the inner groove (52) penetrates through the soil nail body (5) along the length direction of the soil nail body.
9. The soil nail of claim 8 wherein: the circumferential surface of the soil nail body (5) is provided with a plurality of slurry outlet holes (53) communicated with the inner groove (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120842862.4U CN214940200U (en) | 2021-04-22 | 2021-04-22 | Soil nail end expander and soil nail applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120842862.4U CN214940200U (en) | 2021-04-22 | 2021-04-22 | Soil nail end expander and soil nail applying same |
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| Publication Number | Publication Date |
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| CN214940200U true CN214940200U (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120842862.4U Active CN214940200U (en) | 2021-04-22 | 2021-04-22 | Soil nail end expander and soil nail applying same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960787A (en) * | 2022-05-31 | 2022-08-30 | 南京海骏绿建科技有限公司 | Construction device and method for leveling plant foundation |
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2021
- 2021-04-22 CN CN202120842862.4U patent/CN214940200U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960787A (en) * | 2022-05-31 | 2022-08-30 | 南京海骏绿建科技有限公司 | Construction device and method for leveling plant foundation |
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