CN215801602U - Support anchor pipe assembly - Google Patents
Support anchor pipe assembly Download PDFInfo
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- CN215801602U CN215801602U CN202121464810.4U CN202121464810U CN215801602U CN 215801602 U CN215801602 U CN 215801602U CN 202121464810 U CN202121464810 U CN 202121464810U CN 215801602 U CN215801602 U CN 215801602U
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Abstract
The utility model mainly aims to provide a supporting anchor pipe assembly, which comprises a shell expansion sleeve and a central rod, wherein the shell expansion sleeve comprises a barrel part and a plurality of groups of latch groups, the barrel part can be elastically deformed, a blind hole is formed in the barrel part, the first axial direction of the blind hole is parallel to the second axial direction of the barrel part, an opening of the blind hole is formed in the first end of the barrel part, the plurality of groups of latch groups are distributed along the second axial direction, the latch groups comprise a plurality of latches, the latches are distributed along the circumferential direction of the barrel part, the latches are fixedly connected with the barrel part, and each latch is provided with a blocking surface, in the second axial direction, the blocking surface is formed on a first end part of the latch, which is close to the opening, the central rod is detachably connected with the blind hole, the first diameter of the central rod is larger than the second diameter of the blind hole, this strut anchor pipe subassembly has the advantage that need not slip casting and anchor nature is good to can realize carrying out the rapid reinforcement to country rock or side slope, in addition, this strut anchor pipe subassembly can also be applicable to the country rock of meeting water softening easily.
Description
Technical Field
The utility model relates to the technical field of anchor rod support, in particular to a support anchor pipe assembly.
Background
In the processing construction of tunnels or side slopes, anchor bolt supporting technology is often adopted to reinforce surrounding rocks or side slopes around tunnels, and at present, the types of anchor bolts are mainly classified into grouting type and non-grouting type. In the process of reinforcing the surrounding rocks or the side slopes around the tunnel, the concrete method of adopting the anchor rods to reinforce the surrounding rocks or the side slopes around the tunnel needs to be determined by site construction conditions. For example, when reinforcing the broken surrounding rock, it is necessary to judge whether the lithology of the broken surrounding rock is suitable for the grouting anchor rod, and when the rock of the broken surrounding rock belongs to rocks which are easily softened by water, such as carbon phyllite, carbon slate, etc., the reinforcing effect obtained when the grouting anchor rod is used for reinforcing the broken surrounding rock is often not obvious, and even sometimes a reverse effect is generated, because the broken surrounding rock is softened by water, the deformation speed and the deformation degree of the broken surrounding rock are aggravated; if the non-grouting anchor rods are adopted to reinforce the broken surrounding rocks, the non-grouting anchor rods often cannot provide enough anchoring force to cause the failure in reinforcing the broken surrounding rocks.
In addition, in the existing anchor rod construction process, anchor rod holes are generally drilled in the broken surrounding rock in a unified mode, and after all the anchor rod holes are drilled, anchor rods are inserted into the anchor rod holes; and if the inserted anchor rod is a grouting anchor rod, performing grouting treatment after the anchor rod is inserted. However, since the self-stability of the broken surrounding rock after the anchor rod hole is drilled can be affected to a certain extent, the anchor rod hole is prone to hole collapse after the anchor rod hole is formed for a period of time (the specific duration of the time depends on the lithology of the broken surrounding rock), and once the hole collapse occurs in the anchor rod hole, the anchor rod cannot be inserted into the anchor rod hole according to the designed position, and the grouting anchor rod cannot be subjected to normal grouting treatment, so that the reinforcing effect on the broken surrounding rock is reduced. In contrast, the self-advancing hollow grouting anchor rod is used in the industry at present to solve the problem of hole collapse of the anchor rod hole, and the self-advancing hollow grouting anchor rod can be used as a drill rod and a grouting pipe to realize drilling, installation and grouting integrated construction; however, the self-advancing hollow grouting bolt cannot be applied to the broken surrounding rock softened when encountering water.
Moreover, for the broken surrounding rock softened when meeting water, although the situation of surrounding rock aggravation deformation can not appear in the grouting type anchor rod grouting process, after the grouting type anchor rod grouting is completed, the next procedure construction can be carried out after the strength of cement mortar meets the requirement, and the whole construction period is greatly prolonged.
Disclosure of Invention
In order to solve the problems, the utility model provides the supporting anchor pipe assembly which does not need grouting, has good anchoring property, can realize quick reinforcement and is suitable for surrounding rocks which are easy to soften when meeting water.
In order to solve the above problems, a primary object of the present invention is to provide a supporting anchor pipe assembly, which includes a casing expanding sleeve and a central rod, wherein the casing expanding sleeve includes a cylindrical portion and a plurality of sets of latch sets, the cylindrical portion is elastically deformable, the cylindrical portion is formed with a blind hole, a first axial direction of the blind hole is parallel to a second axial direction of the cylindrical portion, an opening of the blind hole is formed at a first end of the cylindrical portion, the plurality of sets of latch sets are distributed along the second axial direction, the latch sets include a plurality of latches distributed along a circumferential direction of the cylindrical portion, the latches are fixedly connected to the cylindrical portion, the latches have blocking surfaces, the blocking surfaces are formed on first end portions of the latches close to the opening in the second axial direction, the central rod is detachably connected to the blind hole, and a first diameter of the central rod is larger than a second diameter of the blind hole.
As can be seen from the above, the maximum diameter of the shell expansion sleeve can be designed to be smaller than the diameter of the anchor rod hole drilled in the broken surrounding rock due to the elastic deformation of the cylinder part, so that the shell expansion sleeve can be immediately inserted into the anchor rod hole after each anchor rod hole is drilled and formed, thereby avoiding the insertion time of the shell expansion sleeve after the anchor rod hole collapses, and ensuring that the shell expansion sleeve can be inserted into the anchor rod hole according to the designed position; subsequently, insert well core rod in the blind hole of section of thick bamboo portion, because well core rod's first diameter is greater than the second diameter of blind hole, consequently when well core rod inserts in the blind hole, section of thick bamboo portion can take place elastic deformation so that the diameter increase of self to force the latch to insert in the peripheral broken country rock in order to make shell sleeve pipe and broken country rock in close contact with that rises in the broken country rock of anchor rod hole, when the self stability of broken country rock changes simultaneously, the anchor rod hole can appear warping, and then realize the effect that the secondary closely compresses tightly. In addition, because well core rod and rise between the shell sleeve pipe for can dismantle the connection, make to strut anchor pipe subassembly and have temporary reinforcement function and secondary use concurrently, when strut anchor pipe subassembly and need not to carry out temporary reinforcement, through unloading well core rod from rising the shell sleeve pipe earlier, will rise the shell sleeve pipe again and take out from broken country rock or side slope can.
Preferably, the latch further has a guide surface, the blocking surface being located between the guide surface and the opening in the second axial direction, the guide surface extending from the second end of the latch obliquely outward toward the barrel portion to the first end of the latch.
From the above, the arrangement of the guide surface can enable the shell expansion sleeve to be inserted into the formed anchor rod hole more easily.
The further proposal is that the cross section of the latch is in a right triangle shape.
Therefore, the shape of the clamping teeth can be adjusted correspondingly according to the design requirements of the supporting anchor pipe assembly, the anchoring force of the supporting anchor pipe assembly is guaranteed, and the reinforcing effect of the supporting anchor pipe assembly on the broken surrounding rocks is improved.
The other further proposal is that the cross section of the latch is in a right trapezoid shape; the lower bottom of the right trapezoid is adjacent to the cylinder part, a first sawtooth is formed on one surface, away from the outer peripheral wall of the cylinder part, of the latch in a first radial direction of the cylinder part, or a waist, perpendicular to the bottom, of the right trapezoid is adjacent to the cylinder part, and a second sawtooth is formed on one surface, away from the outer peripheral wall of the cylinder part, of the latch in a second radial direction of the cylinder part.
Therefore, the shape of the clamping teeth can be adjusted correspondingly according to the design requirements of the supporting anchor pipe assembly, the anchoring force of the supporting anchor pipe assembly is guaranteed, and the reinforcing effect of the supporting anchor pipe assembly on the broken surrounding rocks is improved.
Preferably, the second end of the barrel portion is tapered.
From the above, the second end of the barrel part is arranged to be conical, so that the expansion shell sleeve can be more easily inserted into the formed anchor rod hole.
Another preferred scheme is that the central rod is in threaded connection with the blind hole; and/or the center pole is a solid pole.
Therefore, the design enables the central rod and the shell expanding sleeve to be more convenient to assemble and disassemble, and the central rod and the shell expanding sleeve can be reliably connected; the central rod is set to be a solid rod, so that the strength and the rigidity of the central rod can be improved, and the overall strength and the overall rigidity of the connected expanding shell sleeve and the central rod are improved.
Another preferred scheme is that the cylinder part, the clamping teeth and the central rod are all made of steel materials, and the cylinder part and the clamping teeth are welded and fixed.
Therefore, the cylindrical part, the clamping teeth and the central rod are made of steel, so that the cylindrical part, the clamping teeth and the central rod can be guaranteed to have sufficient strength and rigidity, and the cylindrical part and the central rod can have good longitudinal tensile resistance and transverse bending resistance.
Another preferred solution is that the number of latches per set of latch sets is 3 to 10.
Therefore, the number of the clamping teeth in the clamping tooth group can be adjusted adaptively according to the diameter of the barrel part, the lithology of the broken surrounding rock, the anchoring force requirement and other conditions, so that the reinforcing effect of the supporting anchor pipe assembly on the broken surrounding rock is guaranteed.
In a further scheme, in the second axial direction, the clamping teeth of two adjacent clamping tooth groups are staggered.
It is thus clear that above-mentioned design can be appropriate improvement latch's effect, and then improve the anchor power of strutting the anchor pipe subassembly and to the reinforcement effect of broken country rock.
Another preferred scheme is that the supporting anchor pipe assembly further comprises a base plate and a locking nut, a through hole and a convex ring are formed in the base plate, the central rod penetrates through the through hole, the base plate is located at the first end of the barrel portion, the convex ring is located on the circumferential direction of the through hole and located on one side, back to the barrel portion, of the base plate, the locking nut is in threaded connection with the central rod, and the locking nut is abutted to the convex ring.
From the above, backing plate and lock nut are used for cooperating shell sleeve and well core rod that rises to fix the anchor pipe subassembly reliably on broken country rock, and then guarantee the reinforcing effect of anchor pipe subassembly to broken country rock, wherein, the backing plate can improve the anchor power of anchor pipe subassembly.
Drawings
Figure 1 is a schematic structural view of a first embodiment of a support and anchor tube assembly of the present invention.
Figure 2 is a schematic view of the shell-expanding sleeve of the first embodiment of the support and anchor tube assembly of the present invention from a first perspective.
Figure 3 is a schematic structural view of the expanding shell sleeve of the first embodiment of the supporting anchor tube assembly of the present invention from a second perspective.
Figure 4 is a schematic structural view of a center pole of the first embodiment of the support and anchor tube assembly of the present invention.
Figure 5 is a schematic view of the construction of the tie plate of the first embodiment of the support and anchor tube assembly of the present invention.
Figure 6 is a schematic view of a first condition of the supporting-anchor-tube assembly installation process of the first embodiment of the supporting-anchor-tube assembly of the present invention.
Figure 7 is a schematic view of a second state of the supporting-anchor-tube assembly installation process of the first embodiment of the supporting-anchor-tube assembly of the present invention.
Figure 8 is a schematic view of the construction of the expanding shell sleeve of the second embodiment of the support and anchor tube assembly of the present invention.
Figure 9 is a schematic view of the shell expansion sleeve of a third embodiment of the support and anchor tube assembly of the present invention.
Figure 10 is a schematic view of the expanding shell sleeve of the fourth embodiment of the support and anchor tube assembly of the present invention.
Figure 11 is a schematic view of the construction of the expanding shell sleeve of the fifth embodiment of the support and anchor tube assembly of the present invention.
The utility model is further explained with reference to the drawings and the embodiments.
Detailed Description
Supporting anchor tube Assembly first embodiment
Referring to fig. 1, the supporting anchor pipe assembly 100 is used for quickly reinforcing surrounding rocks or slopes without grouting treatment during reinforcement; in addition, this support anchor pipe subassembly 100 still possesses the secondary function of using. The supporting anchor pipe assembly 100 comprises a shell expansion sleeve 1, a central rod 2, a base plate 3 and a locking nut 4.
Referring to fig. 2, 3 and 6, the expanding casing 1 includes a cylinder 11 and a plurality of sets of teeth 12. A blind hole 111 is formed in the middle of the cylindrical portion 11, a first axial direction of the blind hole 111 is parallel to a second axial direction of the cylindrical portion 11, and the blind hole 111 is preferably arranged coaxially with the cylindrical portion 11. The opening 1111 of the blind hole 111 is formed on the end surface of the first end of the tube 11, and the second end of the tube 11 is tapered to facilitate the insertion of the expanding sleeve 1 into the bolt hole 101. In addition, the cylindrical portion 11 has elastic deformation capability, and the cylindrical portion 11 is preferably made of steel material, so that the cylindrical portion 11 has sufficient strength and rigidity, and the cylindrical portion 11 has good longitudinal tensile resistance and transverse bending resistance, thereby ensuring the anchoring force and the reinforcing effect of the anchor pipe assembly 100.
The multiple sets of latch groups 12 are distributed along the second axial direction of the cylinder part 11, each set of latch groups 12 includes multiple latches 121, the multiple latches 121 are distributed along the circumferential direction of the cylinder part 11, and the latches 121 are fixedly connected with the cylinder part 11. Preferably, the latch 121 is made of steel, and the latch 121 is welded to the barrel portion 11, and making the latch 121 of steel enables the latch 121 to have sufficient strength and rigidity. In addition, the number of the latches 121 of each set of latch groups 12 is preferably 3 to 10, and as in this embodiment, the number of the latches 121 of each set of latch groups 12 is 6, and the number of the latches 121 in each set of latches 12 can be adjusted according to the diameter of the barrel 11, the lithology of the broken surrounding rock 10, the requirement of anchoring force, and other conditions, so as to ensure the reinforcing effect of the supporting and anchoring pipe assembly 100 on the broken surrounding rock 10.
The latch 121 has a stop surface 1211 and a guide surface 1212, the stop surface 1211 is formed on a first end of the latch 121 adjacent to the opening 1111 in the second axial direction of the barrel portion 11, and the stop surface 1211 is located between the guide surface 1212 and the opening 1111. The guide surface 1212 extends from the second end of the latch 121 towards the outside of the barrel portion 11 to the first end of the latch 121, and in this embodiment, the latch 121 is substantially in the shape of a right triangle, that is, the cross section of the latch 121 is in the shape of a right triangle, and one leg of the right triangle is adjacent to the outer peripheral wall of the barrel portion 11. The latch 121 can be inserted into a rock body or a soil body around a surrounding rock or a side slope to increase the anchoring force of the expanding casing sleeve 1 and ensure the reinforcing effect of the supporting anchor pipe assembly 100; the blocking surface 1211 is used for better preventing the installed supporting anchor pipe assembly 100 from falling out of the anchor rod hole 101 from the anchor rod hole 101, and further ensuring the reinforcing effect of the supporting anchor pipe assembly 100; and the guide surface 1212 is used to insert the expanding shell sleeve 1 into the designed position as much as possible by the guide surface 1212 when there is a hole collapse problem in the bolt hole 101, and to allow the expanding shell sleeve 1 to be more easily inserted into the bolt hole 101, so as to ensure the installation position accuracy and the reinforcement effect of the bolting pipe assembly 100.
With reference to fig. 4, the central rod 2 is detachably connected to the blind hole 111 of the cylindrical portion 11, and the first diameter of the central rod 2 is larger than the second diameter of the blind hole 111, so that when the central rod 2 is installed in the blind hole 111 of the cylindrical portion 11, the central rod 2 can elastically deform the cylindrical portion 11 and prop open the cylindrical portion 11, so that the diameter of the cylindrical portion 11 is increased and the latch 121 thereon is forced to be inserted into the rock or soil mass around the anchor rod hole 101. The central rod 2 is preferably made of steel, so that the central rod 2 has sufficient strength and rigidity, and the central rod 2 also has good longitudinal tensile resistance and transverse bending resistance. Further, the central rod 2 is preferably a solid rod, so as to suitably improve the strength and rigidity of the central rod 2, and improve the overall strength and overall rigidity of the connected shell expanding sleeve 1 and the central rod 2. In addition, the connection between the central rod 2 and the blind hole 111 is preferably threaded, so that the disassembly and assembly between the central rod 2 and the expanding casing sleeve 1 are more convenient, and the two can be reliably connected.
Referring to fig. 5, the shim plate 3 is preferably square, a through hole 31 and a protruding ring 32 are formed in the middle of the shim plate 3, the through hole 31 penetrates through the shim plate 3 along the second axial direction of the cylindrical portion 11, and the protruding ring 32 is located on the axial direction of the cylindrical portion 11. When the shim plate 3 is connected to the central rod 2, the shim plate 3 is located at the first end of the barrel 11, the central rod 2 passes through the through hole 31 in the shim plate 3, and the collar 32 on the shim plate 3 is located on the side of the shim plate 3 facing away from the barrel 11. The locking nut 4 is threadedly connected to the central rod 2, and when the locking nut 4 is mounted on the central rod 2, the locking nut 4 abuts against the convex ring 32 of the shim plate 3. The backing plate 3 and the locking nut 4 are used for being matched with the expansion shell sleeve 1 and the central rod 2 so as to reliably fix the supporting anchor pipe assembly 100 on the surrounding rock or the side slope, further guarantee the reinforcing effect of the supporting anchor pipe assembly 100 on the surrounding rock or the side slope, and the backing plate 3 can improve the anchoring force of the supporting anchor pipe assembly 100.
In the following, referring to fig. 6 and 7, the supporting and anchoring pipe assembly 100 is applied to the broken surrounding rock 10 to reinforce the broken surrounding rock 10, and the installation process of the supporting and anchoring pipe assembly 100 is briefly described:
when the broken surrounding rock 10 needs to be reinforced, the anchor rod holes 101 are drilled one by one on the broken surrounding rock 10 according to the designed positions, and the broken surrounding rock 10 around the anchor rod hole 101 can also temporarily keep the original self-stability when the anchor rod hole 101 is just formed, so that the anchor rod hole 101 can not collapse in a short time; the barrel part 11 of the shell expansion sleeve 1 can be elastically deformed, so that the maximum diameter of the shell expansion sleeve 1 can be designed to be smaller than the diameter of the anchor rod hole 101 (as shown in fig. 6), and the supporting anchor pipe assembly 100 does not need to be subjected to grouting treatment when reinforcing the broken surrounding rock 10, so that after one anchor rod hole 101 is formed, the shell expansion sleeve 1 can be immediately inserted into the anchor rod hole 101 which is just formed through an anchor rod drilling machine, and the insertion time of the shell expansion sleeve 1 is avoided after the anchor rod hole 101 is collapsed, so that the shell expansion sleeve 1 can be better ensured to be inserted into the anchor rod hole 101 according to the designed position; after the expansion shell sleeve 1 is inserted into the anchor rod hole 101, no matter whether the anchor rod hole 101 collapses, the installation of the central rod 2 is not affected.
Subsequently, by inserting the center rod 2 into the blind hole 111 of the cylindrical portion 11, since the first diameter of the center rod 2 is larger than the second diameter of the blind hole 111, when the center rod 2 is inserted into the blind hole 111, the cylindrical portion 11 is elastically deformed to increase its diameter, and the cylindrical portion 11 forces the latch 121 thereon to be inserted into the crushed surrounding rock 10 of the peripheral wall of the anchor rod hole 101 to bring the jacket sleeve 1 into close contact with the crushed surrounding rock 10 (as shown in fig. 7); when the self-stability of the broken surrounding rock 10 around the anchor rod hole 101 changes, the anchor rod hole 101 deforms, and the effect of secondary compact compaction is achieved.
Next, the tie plate 3 and the locknut 4 are installed on the central rod 2, and the tie plate 3 is abutted with the locknut 4 and the crushed surrounding rock 10 at the opening 1111 of the barrel portion 11, respectively, to anchor the support anchor pipe assembly 100 to the crushed surrounding rock 10, achieving reinforcement of the crushed surrounding rock 10.
In conclusion, the supporting anchor pipe assembly has the advantages of no need of grouting and good anchoring performance through the structural design of the supporting anchor pipe assembly, and can realize rapid reinforcement of surrounding rocks or side slopes. In addition, the supporting anchor pipe assembly can also be suitable for surrounding rocks which are easy to soften when meeting water; moreover, because well core rod and rise between the shell sleeve pipe for can dismantle the connection, make to strut anchor pipe subassembly and have temporary reinforcement function and secondary use concurrently, when strut anchor pipe subassembly and need not to carry out temporary reinforcement, through unloading well core rod from rising the shell sleeve pipe earlier, will rise the shell sleeve pipe again and take out from broken country rock or side slope can.
Second embodiment of supporting anchor tube assembly
Referring to fig. 8, the difference between the present embodiment and the first embodiment of the supporting and anchoring pipe assembly lies in the structure of the expanding casing, specifically, in the present embodiment, in the second axial direction of the cylinder part 51 of the expanding casing 5, the latch 521 of two adjacent latch groups 52 are arranged in a mutually staggered manner, so as to suitably improve the action effect of the latch 521, and further improve the anchoring force of the supporting and anchoring pipe assembly and the reinforcing effect on the broken surrounding rock.
Third embodiment of supporting anchor tube assembly
Referring to fig. 9, the present embodiment is different from the above embodiments in the structure of the expanding-shell sleeve, specifically, in the present embodiment, the cross section of the latch 62 is substantially in the shape of a right-angled trapezoid, wherein the lower base of the right-angled trapezoid is adjacent to the tube portion 61. Preferably, in the first radial direction of the barrel portion 61, a first saw tooth 621 is formed on one surface of the latch 62 away from the outer peripheral wall of the barrel portion, and the first saw tooth 621 is arranged so that the latch 62 can be more easily inserted into a rock or soil mass around the bolt hole.
Therefore, the shape of the latch 62 can be adjusted according to the design requirements of the supporting anchor pipe assembly, so that the anchoring force of the supporting anchor pipe assembly is ensured, and the reinforcing effect of the supporting anchor pipe assembly on the broken surrounding rock is improved.
Fourth embodiment of supporting anchor tube assembly
Referring to fig. 10, the present embodiment is different from the above-described embodiments in the structure of the expanding-shell sleeve, specifically, in the present embodiment, the cross section of the latch 72 is substantially in the shape of a right-angled trapezoid, wherein the waist perpendicular to the bottom of the right-angled trapezoid is adjacent to the tube portion 71. Preferably, in the second radial direction of the barrel portion 71, a second serration 721 is formed on a surface of the latch 72 away from the outer peripheral wall of the barrel portion 71, and the first serration 721 is provided so that the latch 72 can be more easily inserted into the rock or soil mass around the bolt hole.
Therefore, the shape of the latch 72 can be adjusted according to the design requirements of the supporting anchor pipe assembly, so that the anchoring force of the supporting anchor pipe assembly is ensured, and the reinforcing effect of the supporting anchor pipe assembly on the broken surrounding rock is improved.
Fifth embodiment of supporting anchor tube assembly
Referring to fig. 11, the present embodiment is different from the above-described embodiments in the structure of the expanding sleeve, specifically, in the present embodiment, the latch 82 has a triangular pyramid shape, the bottom surface of the triangular pyramid is connected to the outer peripheral wall of the cylindrical portion 81, the first side surface of the latch 82 near the first end of the cylindrical portion 81 is a blocking surface which is parallel to the end surface of the first end of the cylindrical portion 81, and the cross section of the latch 82 is a right triangle in a specific axial cross section of the cylindrical portion 81. Further, the second side 821 and the third side 822 of the triangular pyramid together form a guide surface, and preferably, the second side 821 and the third side 822 are arranged in mirror symmetry with respect to the aforementioned specific axial section.
Therefore, the shape of the latch 82 can be adjusted according to the design requirements of the supporting anchor pipe assembly, so that the anchoring force of the supporting anchor pipe assembly is ensured, and the reinforcing effect of the supporting anchor pipe assembly on the broken surrounding rock is improved.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the utility model are possible to those skilled in the art, without departing from the spirit and scope of the utility model.
Claims (10)
1. A support anchor tube assembly, comprising:
the shell expansion sleeve comprises a barrel part and a plurality of groups of latch groups, the barrel part can elastically deform, a blind hole is formed in the barrel part, the first axial direction of the blind hole is parallel to the second axial direction of the barrel part, an opening of the blind hole is formed in the first end of the barrel part, the plurality of groups of latch groups are distributed along the second axial direction, each latch group comprises a plurality of latches, the plurality of latches are distributed along the circumferential direction of the barrel part, the latches are fixedly connected with the barrel part, each latch is provided with a blocking surface, and the blocking surface is formed on the first end part, close to the opening, of each latch in the second axial direction;
the center rod is detachably connected with the blind hole, and the first diameter of the center rod is larger than the second diameter of the blind hole.
2. The support anchor tube assembly of claim 1, wherein:
the latch further having a guide surface, the blocking surface being located between the guide surface and the opening in the second axial direction;
the guide surface extends from the second end of the latch obliquely outward toward the barrel portion to the first end of the latch.
3. The support anchor tube assembly of claim 2, wherein:
the cross section of the latch is in a right-angled triangle shape.
4. The support anchor tube assembly of claim 2, wherein:
the cross section of the latch is in a right trapezoid shape;
the lower bottom of the right trapezoid is adjacent to the cylinder part, and a first sawtooth is formed on one surface of the latch, which is far away from the outer peripheral wall of the cylinder part, in a first radial direction of the cylinder part, or
The right trapezoid has a waist perpendicular to the bottom adjacent to the tube portion, and the latch has a second serration formed on a surface thereof away from the outer peripheral wall of the tube portion in a second radial direction of the tube portion.
5. The support anchor tube assembly of claim 1, wherein:
the second end of the barrel portion is tapered.
6. The support anchor tube assembly of claim 1, wherein:
the central rod is in threaded connection with the blind hole; and/or
The central rod is a solid rod.
7. The support anchor tube assembly of claim 1, wherein:
the barrel part, the latch and the central rod are all made of steel;
the cylinder part is welded and fixed with the clamping teeth.
8. The support anchor tube assembly of claim 1, wherein:
the number of the latch teeth of each latch tooth group is 3 to 10.
9. The support anchor tube assembly of claim 8, wherein:
in the second axial direction, the clamping teeth of two adjacent clamping tooth groups are staggered mutually.
10. The support anchor tube assembly of any one of claims 1 to 9, wherein:
support anchor pipe subassembly still includes:
the base plate is provided with a through hole and a convex ring in a forming mode, the central rod penetrates through the through hole, the base plate is located at the first end of the barrel part, and the convex ring is located in the circumferential direction of the through hole and located on one side, back to the barrel part, of the base plate;
and the locking nut is in threaded connection with the central rod and is adjacent to the convex ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121464810.4U CN215801602U (en) | 2021-06-29 | 2021-06-29 | Support anchor pipe assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121464810.4U CN215801602U (en) | 2021-06-29 | 2021-06-29 | Support anchor pipe assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215801602U true CN215801602U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121464810.4U Active CN215801602U (en) | 2021-06-29 | 2021-06-29 | Support anchor pipe assembly |
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| Country | Link |
|---|---|
| CN (1) | CN215801602U (en) |
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2021
- 2021-06-29 CN CN202121464810.4U patent/CN215801602U/en active Active
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