CN219622725U - Self-feeding grouting bag anchor rod - Google Patents
Self-feeding grouting bag anchor rod Download PDFInfo
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- CN219622725U CN219622725U CN202321020611.3U CN202321020611U CN219622725U CN 219622725 U CN219622725 U CN 219622725U CN 202321020611 U CN202321020611 U CN 202321020611U CN 219622725 U CN219622725 U CN 219622725U
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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Abstract
The utility model provides a self-feeding grouting bag anchor rod, and belongs to the field of tunnel support. Tunnels are engineering structures buried in an underground formation, a form of human use of underground space. When the tunnel construction is carried out, the lower half section can be excavated after the primary support of the upper section is basically stable in order to ensure safety and excavation and support. Because of the special environment of tunnel construction, the supporting anchor rods are all installed by upward drilling, the installation of common drilling anchor rods is inconvenient, and self-advancing anchor rods with spiral structures are often used in engineering. However, there are cases where the anchoring force in this manner is insufficient for a soil layer structure having a void or a crushed layer. The utility model provides a self-advancing grouting bag anchor rod which comprises an anchor rod body, a sleeve and a grouting bag, wherein a spiral structure is arranged on the outer side of the sleeve, the grouting bag is positioned in a cavity between a drill rod and the sleeve, the sleeve can protect the grouting bag during drilling, and the grouting bag can perform grouting to increase the anchoring force after drilling.
Description
Technical Field
The utility model belongs to the field of tunnel support, and particularly relates to a self-feeding grouting bag anchor rod.
Background
Tunnels are engineering structures buried in an underground formation, a form of human use of underground space. When the tunnel construction is carried out, the lower half section can be excavated after the primary support of the upper section is basically stable in order to ensure safety and excavation and support.
Because of the special environment of tunnel construction, the supporting anchor rods are all installed by upward drilling, the installation of common drilling anchor rods is inconvenient, and self-advancing anchor rods with spiral structures are often used in engineering. However, for a soil layer structure with a gap or a broken layer, the grip of the anchor rod on the soil layer is insufficient, and slurry is lost along with the gap and the broken layer during grouting, so that the anchoring force in the mode is insufficient, and the rod body of the spiral self-advancing anchor rod is used as a contact surface for cutting and extruding the soil layer, so that the conventional anchor rod with a grouting bag is difficult to implement.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a self-feeding grouting bag anchor rod for solving the problem of insufficient anchoring force when the screw-type self-feeding anchor rod faces a soil layer structure having a void or a broken layer in the prior art.
To achieve the above and other related objects, the present utility model provides a self-feeding grouting bag anchor rod, comprising an anchor rod body, wherein the anchor rod body comprises a drill bit and a drill rod, and the drill rod is hollow and is provided with a plurality of grouting holes;
the grouting device also comprises a sleeve, a limiting ring, a grouting bag and a locking nut;
the connecting end of the drill bit and the drill rod is provided with a plurality of raised limiting blocks, and the limiting blocks are positioned around the outer side of the drill rod;
the outer side of the sleeve is provided with a spiral structure, the outer diameter of the spiral structure is matched with the outer diameter of the drill bit, the inner side of the sleeve is sleeved into the drill rod, one end of the sleeve is provided with a concave limiting groove, and the limiting groove is matched with the limiting block and limits the relative rotation of the sleeve and the drill rod;
the tail end of the drill rod is provided with a plurality of limiting surfaces and locking surfaces, the limiting surfaces are planes, each limiting surface comprises a first limiting surface and a second limiting surface, the inner side of each limiting ring is sleeved into the corresponding first limiting surface of the tail end of the drill rod, the outer side of each limiting ring is in contact fit with the inner cross section of the corresponding sleeve, each limiting ring can slide between the corresponding drill rod and the corresponding sleeve, when the drill rod is installed, the end face of each limiting ring is in contact with the corresponding second limiting surface, the end face of the other side of each limiting ring is aligned with the tail end of the corresponding sleeve, each locking surface is an arc surface, threads are arranged on each locking surface, and each locking nut is in contact with the corresponding threads of each locking surface and tightly presses the corresponding limiting ring and the corresponding sleeve;
the diameter of the drill rod is smaller than the inner diameter of the sleeve, a cavity is formed between the drill rod and the sleeve, the grouting bag is located in the cavity, the grouting bag wraps one section of the drill rod, and two ends of the grouting bag are connected to the drill rod in a sealing mode through sealing rings.
Optionally, the drill rod further comprises a separation baffle, a communicating pipe and a bag grouting pipe, and the separation baffle, the communicating pipe and the bag grouting pipe are all positioned in the drill rod;
the separation baffle is used for dividing the hollow hole in the drill rod into a plurality of sections, and the position of each sealing ring is correspondingly provided with one separation baffle;
one end of the bag grouting pipe is connected with the section where the grouting bag is positioned, and the other end of the bag grouting pipe is connected with the tail end of the drill rod;
and two ends of the communicating pipe are respectively connected to two sides of the section where the grouting bag is positioned, so that the sections on two sides of the grouting bag are communicated.
Optionally, the drill pipe is characterized in that a plurality of grouting bags are arranged on the drill pipe.
Optionally, the anchor rod further comprises a grout stop plug and an anchor backing plate, wherein when the anchor rod body is anchored, the grout stop plug is sleeved at the tail end of the drill rod and is positioned in a borehole, the outer side end surface of the grout stop plug is flush with the surface of the borehole, and the anchor backing plate penetrates through the drill rod, is attached to the surface of the borehole and presses the grout stop plug.
Optionally, the grout stop is made of elastic material, the outer diameter of the grout stop is larger than that of the drill bit, and the grout stop can be extruded into a drilled hole.
Optionally, the slurry stop plug is a polymer material bag, initially contracts into a small volume, and expands into a ring shape after being filled with fluid.
Optionally, the grouting device further comprises a grouting stop valve, and the grouting stop valve is connected to the tail end of the drill rod during grouting.
Optionally, a plurality of grouting holes are alternately arranged on the surface of the drill rod in a quincuncial shape.
Optionally, the locking nut and the thread at the end of the drill rod are both reverse threads.
Optionally, the drill bit is a precast concrete drill bit.
As described above, the self-feeding grouting bag anchor rod has at least the following beneficial effects:
the anchoring force is sufficient, can be applied to the soil layer structure that has space or broken layer, including stock body, sleeve and slip casting bag, the sleeve outside is equipped with spiral structure, and the slip casting bag is located the cavity between drilling rod and the sleeve. When drilling, the spiral structure at the outer side of the sleeve cuts and extrudes the soil layer, and the inner side of the sleeve protects the grouting bag; after drilling is completed, the sleeve can be taken out, at the moment, the grouting bag is filled with liquid, and the grouting bag can be automatically filled according to gaps or broken layers of a soil layer to form an internally expanded concrete block, so that the concrete slurry can be prevented from flowing away, and the anchoring force can be increased.
Drawings
Fig. 1 is a schematic view of a self-advancing grouting bag after anchor rod installation according to the present utility model.
Fig. 2 is a schematic diagram showing the assembly of the self-advancing grouting bag anchor rod before drilling.
Fig. 3 shows a partial cross-sectional view of a self-advancing grouting bag anchor rod of the present utility model prior to drilling.
Fig. 4 shows a schematic view of a self-advancing grouting bag anchor body according to the present utility model.
Fig. 5 shows a half cross-sectional view of a self-advancing grouting bag anchor according to the utility model.
Fig. 6 shows a schematic cross-section of a self-advancing grouting bag anchor C-C according to the utility model.
Fig. 7 shows a schematic view of the self-advancing grouting bag anchor rod of the present utility model detached prior to drilling.
Fig. 8 is a schematic diagram showing a self-advancing grouting bag anchor rod pre-drilling assembly according to the present utility model.
Fig. 9 shows a schematic view of a self-advancing grouting bag anchor sleeve according to the present utility model.
Fig. 10 is a schematic view of a self-advancing grouting bag anchor without a lock nut installed in accordance with the present utility model.
Wherein: the grouting device comprises an anchor rod body 1, a drill bit 11, a limiting block 111, a drill rod 12, a grouting hole 121, a limiting surface 122, a first limiting surface 1221, a second limiting surface 1222, a locking surface 123, threads 1231, a sleeve 2, a spiral structure 201, a limiting groove 202, a limiting ring 3, a locking nut 4, a grouting plug 5, an anchor backing plate 6, a grouting valve 7, a grouting bag 801, a sealing ring 802, a blocking piece 803, a communicating pipe 804 and a bag grouting pipe 805.
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
Please refer to fig. 1 to 10. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the utility model, are included in the spirit and scope of the utility model which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
The following examples are given by way of illustration only. Various embodiments may be combined and are not limited to only what is presented in the following single embodiment.
Referring to fig. 1-4, the present utility model provides a self-feeding grouting bag anchor rod, which comprises an anchor rod body 1, wherein the anchor rod body 1 comprises a drill bit 11 and a drill rod 12, and the drill rod 12 is hollow and provided with a plurality of grouting holes 121;
the grouting device also comprises a sleeve 2, a limiting ring 3, a grouting bag 801 and a locking nut 4;
a plurality of raised limiting blocks 111 are arranged at the connecting end of the drill bit 11 and the drill rod 12, and the limiting blocks 111 are positioned around the outer side of the drill rod 12;
a spiral structure 201 is arranged on the outer side of the sleeve 2, the outer diameter of the spiral structure 201 is matched with the outer diameter of the drill bit 11, the drill rod 12 is sleeved on the inner side of the sleeve 2, a concave limiting groove 202 is formed in one end of the sleeve 2, and the limiting groove 202 is matched with the limiting block 111 and limits the relative rotation of the sleeve 2 and the drill rod 12;
the tail end of the drill rod 12 is provided with a plurality of limiting surfaces 122 and locking surfaces 123, the limiting surfaces 122 are planes, the limiting surfaces 122 comprise a first limiting surface 1221 and a second limiting surface 1222, the inner side of the limiting ring 3 is sleeved into the first limiting surface 1221 at the tail end of the drill rod 12, the outer side of the limiting ring 3 is in contact fit with the inner cross section of the sleeve 2, the limiting ring 3 can slide between the drill rod 12 and the sleeve 2, when the drill rod is installed, the end surface of the limiting ring 3 is in contact with the second limiting surface 1222, the end surface of the other side of the limiting ring 3 is aligned with the tail end of the sleeve 2, the locking surfaces 123 are arc surfaces, threads 1231 are arranged on the locking surfaces 123, and the locking nuts 4 are matched with the threads 1231 of the locking surfaces 123 and compress the limiting ring 3 and the sleeve 2;
the diameter of the drill rod 12 is smaller than the inner diameter of the sleeve 2, a cavity is formed between the drill rod 12 and the sleeve 2, the grouting bag 801 is located in the cavity, the grouting bag 801 wraps one section of the drill rod 12, and two ends of the grouting bag 801 are connected to the drill rod 12 in a sealing mode through sealing rings 802.
The self-advancing grouting bag anchor rod of the embodiment is characterized in that a sleeve with a spiral structure is arranged on a drill rod during drilling, the sleeve is arranged on the outer side of the drill rod, the outer diameter of the spiral structure on the sleeve is matched with the diameter of a drill bit, the drill bit is used for mainly drilling, and the sleeve is used for auxiliary drilling and surrounding soil layer crushing. When in implementation, the sleeve is sleeved into the drill rod and inserted into a limiting block on the end face of the drill bit; the other end is filled with the tail ends of the drill rod and the sleeve by the limiting ring, then the locking nut is screwed in, the drill rod, the sleeve and the limiting ring are connected into a whole, and when drilling, the combined body has higher strength compared with the single drilling by the central drill rod, and the problems of drill rod breakage and the like are less prone to occurring. The limiting surface at the tail end of the drill rod is a plane, and the four first limiting surfaces can facilitate clamping of the drilling machine.
After drilling is completed, the drilling machine is taken down, the locking nut at the tail end is loosened, the limiting ring is withdrawn, the sleeve is properly pulled out, the limiting groove at the other end of the sleeve is separated from the limiting block at the tail part of the drill bit, and then the sleeve is continuously pulled out for recycling. Because the drill bit is the main drilling end, the drill rod portion typically connected to the drill bit is tightly coupled in the earth, and the sleeve is correspondingly loose. If the sleeve is tight, the sleeve can be taken out by reversely screwing the sleeve. When the sleeve is taken out, the periphery of the drilling hole can be blocked, and sediment in the hole is prevented from falling. The sleeve taken out can be assembled in the next anchor rod for use, so that turnover use of the spiral structure is realized, and construction cost is reduced.
In addition, in this embodiment, set up the slip casting hole on the drilling rod, when boring, the drilling rod is not directly with soil layer contact extrusion, but by outer sleeve direct with soil layer contact, demolish the sleeve after boring is accomplished again, expose the slip casting hole, carry out follow-up slip casting work, can effectively prevent that the slip casting hole from blockking up and leading to condition such as reworking.
When encountering the soil layer that has space or crack, the stock is not enough to the grip of soil layer, and when grouting the stock, concrete slurry also can run off along with space or crack, not only need a large amount of slurry to obtain sufficient anchoring force, can also influence geological structure. In this embodiment, be provided with the slip casting bag between sleeve and drilling rod, the position of slip casting bag can set up the detection result of soil layer according to earlier stage, sets up the slip casting bag in soil layer space or crack position.
During drilling, the sleeve plays a role in protecting the grouting bag, and the grouting bag is prevented from being damaged due to friction with a soil layer in the drilling process; and after the drilling is finished, the sleeve is removed, the grouting bag is exposed in the drilled hole, and grouting is carried out on the grouting bag. As shown in fig. 1, as grouting proceeds, the grouting bag expands, and the shape of the grouting bag gradually fills the gaps or cracks of the soil layer, so that the gaps or cracks of the soil layer can be bet, the concrete slurry is prevented from flowing away, and an enlarged end can be formed in the drilled hole, so that the anchoring effect is improved.
Referring to fig. 2, the embodiment further includes a separation blade 803, a communicating pipe 804 and a bag grouting pipe 805, which are all located inside the drill pipe 12;
the baffle 803 is used for dividing the hollow hole in the drill rod 12 into a plurality of sections, and each sealing ring 802 is correspondingly provided with a baffle 803;
one end of the bag grouting pipe 805 is connected to the section where the grouting bag 801 is located, and the other end is connected to the tail end of the drill pipe 12;
both ends of the communicating pipe 804 are respectively connected to both sides of the segment where the grouting bag 801 is located, so that the segments on both sides of the grouting bag 801 are communicated.
In this embodiment, the grouting bag is separately connected to the outer side of the anchor rod through the bag grouting pipe, and grouting can be performed in steps during grouting. Specifically, grouting can be performed on the grouting bag firstly, grouting is performed on the whole anchor rod after the grouting bag is expanded and the soil layer gap or the crack is completely plugged, so that concrete slurry can be further prevented from flowing out, and the whole anchoring effect of the anchor rod is improved.
As a further aspect of the foregoing embodiment, the drill pipe 12 is provided with a plurality of grouting pockets 801. In practical construction, the facing soil layer structure may be quite complex, and the soil layer may have a plurality of cavities or cracks therein, and correspondingly, the anchor rod may be provided with a plurality of grouting bags.
Referring to fig. 1, the self-advancing grouting bag anchor rod further comprises a grout stop plug 5 and an anchor pad 6, wherein when the anchor rod body 1 is anchored, the grout stop plug 5 is sleeved at the tail end of the drill rod 12 and positioned in a borehole, the outer side end surface of the grout stop plug 5 is flush with the surface of the borehole, and the anchor pad 6 passes through the drill rod 12, is attached to the surface of the borehole and presses the grout stop plug 5.
After the sleeve is recovered, a grout stop plug and an anchor backing plate are required to be installed at the tail end of the anchor rod, the grout stop plug is positioned at an orifice of a drilled hole and used for betting a gap of the orifice, and concrete grout is prevented from flowing out of the hole during grouting. The anchor backing plate is attached to the soil surface of the hole, the slurry stop plug and the anchor backing plate are compressed through the locking nut, and the anchor backing plate is a plate-shaped object and can disperse the compression force.
During practical construction, reinforcing steel bar meshes and the like are arranged on the surface layer, then cement slurry is used for spraying the reinforcing steel bar meshes and the tail ends of the anchor rods of the orifice, and a primary support structure is formed after solidification.
Further, the grout stop 5 is made of elastic material, the outer diameter of the grout stop 5 is larger than that of the drill bit 11, and the grout stop 5 can be extruded into a drilled hole. For example, the slurry stop plug is made of rubber material with a hole in the middle, the outer diameter is slightly larger than that of the hole, the slurry stop plug is pressed into the hole, a good sealing effect can be achieved, the cost is low, and finished products can be directly selected.
As an alternative to the above solution, the grout stop plug 5 may be a polymer material bag, which initially shrinks to a small volume, and expands to a ring shape after being filled with fluid. In this embodiment, the bag is more convenient, fills concrete self-expanding when using, need not to extrude the installation, and in life in-process in addition, along with the decomposition of bag material, its filling volume can not change, can not form the cavity in inside, and the drilling rod body of rod can not directly expose in the air, can avoid the too fast corrosion of body of rod, can maintain better support performance all the time.
Referring to fig. 1, the self-advancing grouting bag anchor rod further comprises a grout stop valve 7, and the grout stop valve 7 is connected to the tail end of the drill rod 12 during grouting. Because the tunnel stock is from down ascending direction installation, concrete slurry can spontaneous down the department flows under the action of gravity, also will flow back out from stock grouting hole, opens when the slip casting after setting up the grout stop valve, closes after the slip casting finishes, can prevent concrete slurry backward flow, and after concrete solidification, the grout stop valve still can pull down the turnover and use, can reduce construction cost.
In this embodiment, referring to fig. 1, a plurality of grouting holes 121 are alternately arranged on the surface of the drill pipe 12 in a quincuncial shape. The arrangement mode has the advantages that grouting Kong Jiaoti is arranged on the premise that the existing size is not changed, different vertical columns are staggered in height, the distance between grouting holes is increased on the same horizontal layer height, the mechanical property of a drill rod is effectively improved, and the overall strength of the anchor rod is improved.
In this embodiment, the locking nut 4 and the thread 1231 at the end of the drill rod 12 are both reverse threads 1231. In the drilling process of the drill rod, the drill rod can cut soil layers to generate complex working conditions such as vibration and the like, and locking failure of the locking nut can be caused, so that the fixed connection between the sleeve and the drill rod is failed. In the embodiment, the reverse threads are used for locking, and the direction of the threads is opposite to the rotation direction of the drill rod during drilling, so that the anti-loosening effect is achieved.
Further, the drill bit is a precast concrete drill bit. In this embodiment, the drill bit is disposable, and the drill bit is not too much drilled every time, and is permanently buried in the soil layer after use. The precast concrete drill bit is used, so that the construction cost can be greatly reduced while the drilling performance requirement is met.
In summary, the utility model effectively overcomes various defects in the prior art, and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. The utility model provides a from advance formula slip casting bag stock, includes stock body (1), stock body (1) include drill bit (11) and drilling rod (12), drilling rod (12) cavity just is provided with a plurality of slip casting hole (121), its characterized in that:
the grouting device also comprises a sleeve (2), a limiting ring (3), a grouting bag (801) and a locking nut (4);
a plurality of protruding limiting blocks (111) are arranged at the connecting end of the drill bit (11) and the drill rod (12), and the limiting blocks (111) are positioned around the outer side of the drill rod (12);
the outer side of the sleeve (2) is provided with a spiral structure (201), the outer diameter of the spiral structure (201) is matched with the outer diameter of the drill bit (11), the inner side of the sleeve (2) is sleeved with the drill rod (12), one end of the sleeve (2) is provided with a concave limiting groove (202), and the limiting groove (202) is matched with the limiting block (111) and limits the relative rotation of the sleeve (2) and the drill rod (12);
the tail end of the drill rod (12) is provided with a plurality of limiting surfaces (122) and locking surfaces (123), the limiting surfaces (122) are planes, the limiting surfaces (122) comprise a first limiting surface (1221) and a second limiting surface (1222), the first limiting surface (1221) at the tail end of the drill rod (12) is sleeved on the inner side of the limiting ring (3), the outer side of the limiting ring (3) is in contact fit with the inner cross section of the sleeve (2), the limiting ring (3) can slide between the drill rod (12) and the sleeve (2), when the drill rod is installed, the end surface of the limiting ring (3) is in contact with the second limiting surface (1222), the end surface of the other side of the limiting ring (3) is aligned with the tail end of the sleeve (2), the locking surfaces (123) are arc surfaces, threads (1231) are arranged on the locking surfaces (123), and the locking nuts (4) are matched with the threads (1231) of the locking surfaces (123) and compress the limiting ring (3) and the sleeve (2);
the diameter of the drill rod (12) is smaller than the inner diameter of the sleeve (2), a cavity is formed between the drill rod (12) and the sleeve (2), the grouting bag (801) is located in the cavity, the grouting bag (801) wraps one section of the drill rod (12), and two ends of the grouting bag (801) are connected to the drill rod (12) in a sealing mode through sealing rings (802).
2. A self-advancing grouting bladder anchor as claimed in claim 1, further comprising a barrier (803), a communication tube (804) and a bladder grouting tube (805), all located inside the drill pipe (12);
the separation baffle plates (803) are used for dividing the hollow hole in the drill rod (12) into a plurality of sections, and each sealing ring (802) is correspondingly provided with one separation baffle plate (803);
one end of the bag grouting pipe (805) is connected with the section where the grouting bag (801) is positioned, and the other end of the bag grouting pipe is connected with the tail end of the drill rod (12);
and two ends of the communicating pipe (804) are respectively connected to two sides of the section where the grouting bag (801) is positioned, so that the sections on two sides of the grouting bag (801) are communicated.
3. A self-advancing grouting bladder anchor as claimed in claim 1 or claim 2, characterised in that a plurality of grouting bladders (801) are provided on the drill stem (12).
4. A self-advancing grouting bag anchor according to claim 1, further comprising a grout stop plug (5) and an anchor pad (6), wherein when the anchor body (1) is anchored, the grout stop plug (5) is sleeved at the tail end of the drill rod (12) and positioned in a drill hole, the outer side end surface of the grout stop plug (5) is flush with the surface of the drill hole, and the anchor pad (6) passes through the drill rod (12) to be attached to the surface of the drill hole and press the grout stop plug (5).
5. A self-advancing grouting pocket bolt as claimed in claim 4, characterised in that the grout stop (5) is of resilient material, the grout stop (5) having an outer diameter greater than the drill bit (11), the grout stop (5) being squeezable into a borehole.
6. A self-advancing grouting bag anchor as claimed in claim 4, characterised in that the grout stop plug (5) is a polymeric bag which initially contracts to a small volume and expands to a ring shape after filling with fluid.
7. A self-advancing grouting bladder anchor as claimed in claim 1, characterised in that it further comprises a grout stop valve (7), the grout stop valve (7) being connected to the end of the drill rod (12) during grouting.
8. A self-advancing grouting pocket rock bolt as claimed in claim 1, characterised in that a plurality of said grouting holes (121) are alternately arranged in a quincuncial pattern on the surface of the drill rod (12).
9. A self-advancing grouting pocket bolt as claimed in claim 1, characterised in that the locking nut (4) and the thread (1231) at the end of the drill rod (12) are counter-threaded.
10. A self-advancing grouting pocket rock bolt as claimed in claim 1, characterised in that the drill bit (11) is a precast concrete drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321020611.3U CN219622725U (en) | 2023-05-04 | 2023-05-04 | Self-feeding grouting bag anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321020611.3U CN219622725U (en) | 2023-05-04 | 2023-05-04 | Self-feeding grouting bag anchor rod |
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| Publication Number | Publication Date |
|---|---|
| CN219622725U true CN219622725U (en) | 2023-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321020611.3U Active CN219622725U (en) | 2023-05-04 | 2023-05-04 | Self-feeding grouting bag anchor rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118148488A (en) * | 2024-05-11 | 2024-06-07 | 洛阳诚铸混凝土有限公司 | Deep foundation pit supporting drilling mechanism and assembling and disassembling method thereof |
-
2023
- 2023-05-04 CN CN202321020611.3U patent/CN219622725U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118148488A (en) * | 2024-05-11 | 2024-06-07 | 洛阳诚铸混凝土有限公司 | Deep foundation pit supporting drilling mechanism and assembling and disassembling method thereof |
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