CN113279797A - Tension type locking anchor rod and using method thereof - Google Patents
Tension type locking anchor rod and using method thereof Download PDFInfo
- Publication number
- CN113279797A CN113279797A CN202110319294.4A CN202110319294A CN113279797A CN 113279797 A CN113279797 A CN 113279797A CN 202110319294 A CN202110319294 A CN 202110319294A CN 113279797 A CN113279797 A CN 113279797A
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- Prior art keywords
- anchor rod
- sleeve
- anchor
- spring
- rod body
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- 238000000034 method Methods 0.000 title claims description 8
- 239000000945 filler Substances 0.000 claims description 6
- 230000000670 limiting effect Effects 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 230000000630 rising effect Effects 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 abstract description 4
- 239000011435 rock Substances 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010009 beating Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
A tension type locking anchor rod comprises an anchor rod assembly, a tension assembly and an anchor head assembly; the tensioning assembly comprises a sleeve, a supporting tensioning rod, a positioning sleeve and an adjusting nut; the sleeve moves left and right to be arranged at the left part of the anchor rod body, the left end of each supporting expansion rod is rotatably arranged on the sleeve, and the binding bands gather and bind the right ends of the supporting expansion rods which are uniformly distributed on the circumference; the adjusting nut is arranged on the anchor rod body in a threaded manner; the positioning sleeve is sleeved on the anchor rod body in a sliding mode, and when the sleeve and the positioning sleeve move relatively, the positioning sleeve expands the plurality of support expansion rods and enables one ends of the support expansion rods to be in contact with the inner wall of the drilled hole; the anchor head assembly comprises a fixed head and a second spring, and the left end of the anchor rod body moves left and right and is limited in a blind cavity at the right end of the fixed head; when the second spring is compressed, one end of the second spring is contacted with the fixed head, and the other end of the second spring is contacted with the sleeve. This formula of rising and tightly locking stock, simple structure can effectively realize the stock and expand in the drilling and open the auto-lock, promotes the anchor power, and is firm reliable more.
Description
Technical Field
The invention relates to the technical field of anchoring, in particular to a tension type locking anchor rod and a using method thereof.
Background
As an important component of modern support theory, anchor rods are widely applied to support engineering of rocks, foundation pits and side slopes. Along with the continuous development and utilization of underground space in China and the continuous rising of underground engineering quantity, the engineering gradually puts higher requirements on supporting technology, such as the need of higher-quality anchor rods, firmer anchor rod supporting technology, more efficient anchor rod construction technology and the like;
traditional stock locking fixed ability in drilling is not enough, and some stocks structurally increase the wedge and ensure the frictional force of stock and country rock to promote the anchor power, but this kind of locking stock that increases the wedge is along with the external power of pulling out locking of outside screw, can't last to contact with the pore wall, and screws up behind the screw the basis auto-lock that the frictional force of wedge and hole inner wall formed and not firm, strut unreliable.
Disclosure of Invention
The invention provides a tension type locking anchor rod and a using method thereof, which are simple in structure, capable of effectively realizing self-locking of the anchor rod in a borehole by expanding and opening, capable of improving anchoring force, and more stable and reliable.
In order to achieve the aim, the tension type locking anchor rod comprises an anchor rod assembly; the anchor rod assembly comprises an anchor rod body, an anchor backing plate and a locking nut, wherein the anchor backing plate is arranged on the right side of the anchor rod body in a left-right moving mode and is fastened and fixed through a fastening nut which is installed on the anchor rod body in a threaded mode;
the tensioning device also comprises a tensioning assembly and an anchor head assembly;
the tensioning assembly comprises a sleeve, a supporting tensioning rod, a positioning sleeve and an adjusting nut;
the sleeve is sleeved at the left part of the anchor rod body in a left-right moving mode, a plurality of supporting expansion rods are uniformly arranged on the circumference of the anchor rod body, the left end of each supporting expansion rod is rotatably installed on the sleeve, and the right ends of the supporting expansion rods are gathered and tightly bound by a binding band;
the adjusting nut is positioned on the right side of the sleeve and is installed on the anchor rod body in a threaded mode; the positioning sleeve is slidably sleeved on the anchor rod body and is positioned between the sleeve and the adjusting nut, the positioning sleeve is in a round platform structure with a narrow left part and a wide right part, and when the sleeve and the positioning sleeve move relatively, the positioning sleeve expands the plurality of support expansion rods and enables one ends of the support expansion rods to be in contact with the inner wall of the drill hole;
the anchor head assembly is arranged at the left end of the anchor rod body and comprises a fixing head and a second spring, a blind cavity is formed in the right end of the fixing head, and the left end of the anchor rod body moves left and right and is limited in the blind cavity; the second spring is sleeved on the anchor rod body, and when the second spring is compressed, one end of the second spring is in contact with the fixing head, and the other end of the second spring is in contact with the sleeve.
Furthermore, a positioning hole is formed in the right end of the strip-shaped groove, a third spring is arranged in the positioning hole, when the supporting expansion rod is bound and fastened through the binding band, the third spring is in a compressed state, one end of the third spring is in contact with the supporting expansion rod, and the other end of the third spring is in contact with the positioning hole.
Furthermore, the right side of the support expansion rod is bent towards the inner wall of the drill hole, and when the support expansion rod expands, the bent part is parallel to the inner wall of the drill hole.
Further, it is equipped with a plurality of barbs to support the pole right part that rises, and the barb is right angle or obtuse triangle-shaped structure, and triangular's acute angle is located the left side.
Furthermore, the sleeve is provided with a strip-shaped groove arranged along the axial direction of the sleeve, the width of the strip-shaped groove is larger than that of the supporting and expanding rod, and when the supporting and expanding rod is bound and fastened through a binding band, the left side of the supporting and expanding rod is positioned in the strip-shaped groove.
Further, the anchor head assembly further comprises a first spring, the first spring is located in the blind cavity, when the first spring is compressed, one end of the first spring is in contact with the bottom wall of the blind cavity, and the other end of the first spring is in contact with the end of the anchor rod body.
Furthermore, the left end of the fixing head is provided with an elastic bag, a liquid filling agent is arranged in the elastic bag, and when the fixing head is extruded with the bottom of the drill hole, the elastic bag is broken.
Furthermore, a groove hole which is arranged left and right and communicated with the blind cavity is formed in the fixing head, a positioning pin is installed on the anchor rod body in a threaded mode, and the positioning pin slides in the groove hole.
Furthermore, the included angle between the generatrix on the positioning sleeve and the rotating shaft is 15-45 degrees.
The use method of the tension type locking anchor rod is characterized by comprising the following steps:
a. the adjusting nut is rotated to move left and right on the anchor rod body, the position of the tensioning assembly at the left part of the anchor rod body is adjusted, and the position is limited by the adjusting nut;
b. the anchor rod body is placed in a drill hole, an anchor head assembly located at the left end of the anchor rod body is located at the bottom of the drill hole, the anchor rod body is knocked to move towards the bottom of the drill hole, the left end of the anchor rod body moves to the left in a blind cavity, a second spring is compressed, reverse elasticity of the second spring acts on a sleeve of a tensioning assembly, the sleeve and a positioning sleeve are enabled to be in relative extrusion movement under the limiting condition of an adjusting nut, the left end of the positioning sleeve is embedded between a plurality of gathered supporting expansion rods, a binding band wound on the plurality of supporting expansion rods is enabled to be broken, and the left end of each supporting expansion rod rotates on the sleeve, the right end of each supporting expansion rod expands and contacts with the inner wall of the drill hole to tension the inner wall of the drill hole;
c. then the fastening nut is rotated to drive the anchor rod body to move rightwards, the second spring compresses the acting force on the sleeve, so that the end head of the support expansion rod is embedded in the drill hole to be locked, and the left side limit is carried out through the contact of the fixing head and the sleeve; and after the anchor rod body is locked and fixed in the drill hole, the anchor backing plate is opened and the filler is poured into the drill hole.
Compared with the prior art, the tension type locking anchor rod and the using method thereof are provided with the anchor head assembly and the tension assembly, the anchor rod body is placed in the drill hole, the anchor rod body is knocked to move towards the bottom of the drill hole, the left end of the anchor rod body moves leftwards in the blind cavity, the second spring is compressed, the sleeve and the positioning sleeve are enabled to move relatively under the limit of the adjusting nut and to be extruded relatively, the left end of the positioning sleeve is embedded between the gathered support expansion rods, the binding bands wound on the support expansion rods are enabled to be broken, the left end of each support expansion rod rotates on the sleeve, the right end of each support expansion rod expands to be in contact with the inner wall of the drill hole, and tension self-locking on the inner wall of the drill hole is achieved through expansion of the support expansion rods, the anchoring force is improved, and the support expansion rods are evenly arranged in the circumferential direction, so that tension is more stable and reliable; the adjusting nut is arranged on the anchor rod body in a threaded manner, so that the adjusting nut is rotated to move left and right on the anchor rod body, the position of the tensioning assembly can be adjusted, and the anchor rod is suitable for different tensioning environments; the barb is arranged on the support expansion rod, and the barb is contacted with the inner wall of the drill hole, so that the locking force of the support expansion rod is effectively increased, and the anchor rod body is prevented from being separated from the drill hole; because still including being located the first spring of blind intracavity at the anchor head subassembly, through the combined action of first spring and second spring, it is stronger to telescopic effort, under the condition that does not influence the support expansion link and expand through the position sleeve, avoid beating the broken ring to the anchor rod head when the stock body of rod strikes left. This formula of rising and tightly locking stock, simple structure can effectively realize the stock and expand in the drilling and open the auto-lock, promotes the anchor power, and is firm reliable more.
Drawings
FIG. 1 is a front view of the present invention in its overall initial state;
FIG. 2 is a front view of the invention in an overall tensioned state;
FIG. 3 is a front view of another embodiment of the present invention showing the support member in an overall tensioned state;
FIG. 4 is a schematic view of the sleeve of the present invention;
in the figure: 11. the anchor rod comprises an anchor rod body 12, an anchor backing plate 13, a fastening nut 21, a fixing head 22, a blind cavity 23, a first spring 24, a second spring 31, a supporting expansion rod 32, barbs 33, a positioning sleeve 34, an adjusting nut 4, a binding band 5, a sleeve 51, a strip-shaped groove 52 and an ear seat.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 and 2, the tension type locking anchor rod comprises an anchor rod assembly, a tension assembly and an anchor head assembly;
the anchor rod assembly comprises an anchor rod body 11, an anchor backing plate 12 and a locking nut, wherein the anchor backing plate 12 is arranged on the right side of the anchor rod body 11 in a left-right movement mode and is fastened and fixed through a fastening nut 13 which is installed on the anchor rod body 11 through threads;
the tensioning assembly is positioned on the right side of the anchor head and comprises a sleeve 5, a supporting expansion rod 31, a positioning sleeve 33 and an adjusting nut 34;
the sleeve 5 is sleeved at the left part of the anchor rod body 11 in a left-right moving mode, a plurality of supporting expansion rods 31 are arranged, the plurality of supporting expansion rods 31 are evenly arranged on the sleeve 5 in the circumferential direction, the left end of each supporting expansion rod 31 is rotatably installed on the sleeve 5, and the binding belt 4 is used for gathering and binding the right ends of the plurality of supporting expansion rods 31;
the adjusting nut 34 is positioned on the right side of the sleeve 5 and is in threaded mounting on the anchor rod body 11; the positioning sleeve 33 is slidably sleeved on the anchor rod body 11 and is positioned between the sleeve 5 and the adjusting nut 34, the positioning sleeve 33 is in a round table structure with a narrow left part and a wide right part, and when the sleeve 5 and the positioning sleeve 33 move relatively, the positioning sleeve 33 expands the plurality of support expansion rods 31 and enables one ends of the support expansion rods 31 to be in contact with the inner wall of a drilled hole;
the anchor head assembly is arranged at the left end of the anchor rod body 11 and comprises a fixing head 21 and a second spring 24, a blind cavity 22 is formed in the right end of the fixing head 21, and the left end of the anchor rod body 11 moves left and right and is limited and arranged in the blind cavity 22;
the second spring 24 is sleeved on the anchor rod body 11, and when the second spring 24 is compressed, one end of the second spring is contacted with the fixing head 21, and the other end of the second spring is contacted with the sleeve 5;
further, a positioning hole is formed at the right end of the strip-shaped groove 51, a third spring is arranged in the positioning hole, when the supporting and expanding rod 31 is bound and fastened by the binding band 4, the third spring is in a compressed state, and one end of the third spring is in contact with the supporting and expanding rod 31, and the other end of the third spring is in contact with the positioning hole.
When the support expansion rod 31 is in an initial state, namely the support expansion rod 31 is tightly bound and fixed by the binding band 4 and is in a gathering state, the third spring has elastic acting force on the support expansion rod 31, when the support expansion rod 31 is in contact with the positioning sleeve 33 and struggles to open the binding band 4 and expand, the support expansion rod 31 can be quickly opened through the third spring, and the support expansion rod 31 can also have initial acting force on the inner wall of a drill hole, so that the locking is firmer;
as shown in fig. 3, further, the right side of the supporting expansion rod 31 is bent towards the inner wall of the drilled hole, and when the supporting expansion rod 31 expands, the bent part is parallel to the inner wall of the drilled hole;
furthermore, the right part of the support expansion rod 31 is provided with a plurality of barbs 32, the barbs 32 are in a right-angle or obtuse-angle triangular structure, and the acute angle of the triangle is located on the left side;
as shown in fig. 4, further, the sleeve 5 is provided with a strip-shaped groove 51 arranged along the axial direction thereof, the width of the strip-shaped groove 51 is larger than that of the supporting and rising rod 31, when the supporting and rising rod 31 is bound and fastened by the binding band 4, the left side of the supporting and rising rod 31 is located in the strip-shaped groove 51; one end of the expansion rod 31 can be rotatably arranged on the sleeve 5 through the lug seat 52;
further, the anchor head assembly further comprises a first spring 23, the first spring 23 is located in the blind cavity 22, and when the first spring 23 is compressed, one end of the first spring is in contact with the bottom wall of the blind cavity 22, and the other end of the first spring is in contact with the end of the anchor rod body 11;
furthermore, the left end of the fixing head 21 is provided with an elastic bag, a liquid filling agent is arranged in the elastic bag, and when the fixing head 21 is extruded with the bottom of the drill hole, the elastic bag is broken;
in addition, the left end of the fixing head 21 can be set to be in a conical structure, because the bottom of the drilling hole is usually in a conical shape due to the structure of the drill bit, the conical structure of the fixing head 21 can be well contacted with the bottom of the drill bit;
furthermore, a slotted hole which is arranged left and right and communicated with the blind cavity 22 is formed in the fixing head 21, a positioning pin is installed on the anchor rod body 11 in a threaded mode, and the positioning pin slides in the slotted hole; therefore, the anchor rod body 11 can move left and right in the blind cavity 22 and can slide in the slot hole through the positioning pin for limiting;
furthermore, the included angle between the generatrix of the positioning sleeve 33 and the rotating shaft is 15-45 degrees.
When the tension type locking anchor rod is used, a drill hole with proper depth and diameter is drilled according to the length of the anchor rod body 11, the integral device is placed in the drill hole, the anchor backing plate 12 and the fastening nut 13 are positioned on the outer side of a rock and used for locking and fixing the anchor rod, when the anchor rod body 11 is positioned at a proper position, the anchor rod body 11 moves towards the bottom of the drill hole, so that the anchor head assembly is in contact with the bottom of the drill hole, the tension assembly is driven to be opened, the support expansion rod 31 expands to be in contact with the inner wall of the drill hole, and locking and fixing are achieved;
the method specifically comprises the following steps: firstly, the adjusting nut 34 is rotated according to the use condition, so that the adjusting nut moves left and right on the anchor rod body 11, the position of the tensioning assembly on the anchor rod body 11 is adjusted, and the limiting is realized through the adjusting nut 34; the device is integrally placed in a drill hole, the anchor head assembly is positioned at the bottom of the drill hole, when the inner wall of the drill hole needs to be locked and fastened, the anchor rod body 11 moves towards the bottom of the drill hole, for example, the anchor rod body 11 outside the drill hole is knocked, the left end of the anchor rod body 11 moves leftwards in the blind cavity 22, the second spring 24 is compressed, the sleeve 5 and the positioning sleeve 33 are sleeved on the anchor rod body 11 in a sliding mode, therefore, the sleeve 5 and the positioning sleeve 33 are driven to move rightwards by elasticity, the impact force generated by knocking the anchor rod body 11 is good, the adjusting nut 34 moves leftwards and limits the positioning sleeve 33, the left end of the positioning sleeve 33 is embedded among the gathered supporting and expanding rods 31, the binding belt 4 is broken, the other end of the supporting and expanding rod 31 is expanded to be in contact with the inner wall of the drill hole to realize expansion of the inner wall of the drill hole, and a scheme, on the other hand, the fastening nut 13 can be rotated again, the fastening nut 13 drives the anchor rod body 11 to move rightwards, the second spring 24 compresses acting force on the sleeve 5, so that the end of the support expansion rod 31 is better embedded into the drill hole to be locked, and finally, the left side limiting is realized through the contact of the fixing head 21 and the sleeve 5; after the anchor rod body 11 is locked and fixed in the drill hole, the anchor backing plate 12 can be opened and then the filler is poured into the anchor backing plate;
because the barbs 32 are arranged on the support expansion rod 31, the barbs 32 are in contact with the inner wall of the drilled hole, the locking force of the support expansion rod is effectively increased, and the anchor rod body 11 is prevented from being separated from the drilled hole; because the anchor head assembly also comprises the first spring 23 positioned in the blind cavity 22, the acting force on the sleeve 5 is stronger through the combined action of the first spring 23 and the second spring 24, and the damage to the anchor head when the rock bolt body 11 is knocked to the left is avoided under the condition that the expansion of the support expansion rod 31 through the positioning sleeve 33 is not influenced.
Claims (10)
1. A tension type locking anchor rod comprises an anchor rod assembly; the anchor rod assembly comprises an anchor rod body (11), an anchor backing plate (12) and a locking nut, wherein the anchor backing plate (12) moves left and right and is arranged on the right side of the anchor rod body (11) and is fastened and fixed through a fastening nut (13) which is installed on the anchor rod body (11) through threads; it is characterized in that the preparation method is characterized in that,
the tensioning device also comprises a tensioning assembly and an anchor head assembly;
the tensioning assembly comprises a sleeve (5), a supporting expansion rod (31), a positioning sleeve (33) and an adjusting nut (34);
the sleeve (5) is sleeved at the left part of the anchor rod body (11) in a left-right moving mode, a plurality of supporting expansion rods (31) are arranged, the plurality of supporting expansion rods (31) are evenly distributed on the circumference, the left end of each supporting expansion rod (31) is rotatably installed on the sleeve (5), and the binding belt (4) gathers and binds the right ends of the plurality of supporting expansion rods (31);
the adjusting nut (34) is positioned on the right side of the sleeve (5) and is installed on the anchor rod body (11) in a threaded mode; the positioning sleeve (33) is sleeved on the anchor rod body (11) in a sliding mode and located between the sleeve (5) and the adjusting nut (34), the positioning sleeve (33) is of a round table structure with a narrow left part and a wide right part, and when the sleeve (5) and the positioning sleeve (33) move relatively, the positioning sleeve (33) expands the plurality of supporting expansion rods (31) and enables one ends of the supporting expansion rods (31) to be in contact with the inner wall of a drilled hole;
the anchor head assembly is arranged at the left end of the anchor rod body (11) and comprises a fixing head (21) and a second spring (24), a blind cavity (22) is formed in the right end of the fixing head (21), and the left end of the anchor rod body (11) moves left and right and is limited in the blind cavity (22); the second spring (24) is sleeved on the anchor rod body (11), and when the second spring (24) is compressed, one end of the second spring is in contact with the fixing head (21), and the other end of the second spring is in contact with the sleeve (5).
2. A tension lock anchor as claimed in claim 1, wherein the right end of the strip-shaped groove (51) is provided with a positioning hole, a third spring is arranged in the positioning hole, when the support expansion rod (31) is fastened by the binding band (4), the third spring is in a compressed state, and one end of the third spring is in contact with the support expansion rod (31) and the other end of the third spring is in contact with the positioning hole.
3. A tension lock bolt according to claim 2, characterized in that the right side of the support expansion rod (31) is bent towards the inner wall of the borehole, and when the support expansion rod (31) expands, the bent part is parallel to the inner wall of the borehole.
4. A tension lock bolt according to claim 3, characterized in that the right part of the support expansion rod (31) is provided with a plurality of barbs (32), the barbs (32) are in a right-angled or obtuse-angled triangular structure, and the acute angle of the triangle is on the left side.
5. A tension lock anchor according to any one of claims 1 to 4, in which the sleeve (5) is provided with a strip-shaped groove (51) arranged in the axial direction thereof, the width of the strip-shaped groove (51) is larger than that of the tension rod (31), and when the tension rod (31) is fastened by the binding band (4), the left side of the tension rod (31) is located in the strip-shaped groove (51).
6. A tension lock anchor as claimed in any one of claims 1 to 4, wherein the anchor head assembly further comprises a first spring (23), the first spring (23) being located within the blind cavity (22), and when the first spring (23) is compressed, one end thereof contacts the bottom wall of the blind cavity (22) and the other end thereof contacts the end of the anchor rod body (11).
7. A tension locking anchor rod as claimed in claim 5, wherein the left end of the fixing head (21) is provided with an elastic bag, a liquid type filling agent is arranged in the elastic bag, and when the fixing head (21) is pressed against the bottom of the drill hole, the elastic bag is broken.
8. The tension type locking anchor rod of claim 7, wherein the fixing head (21) is provided with a slotted hole which is arranged left and right and communicated with the blind cavity (22), and the anchor rod body (11) is provided with a positioning pin in a threaded manner, and the positioning pin slides in the slotted hole.
9. The tension type locking anchor rod as claimed in claim 6, wherein the included angle between the generatrix of the locating sleeve (33) and the rotation axis is 15-45 °.
10. The use method of the tension type locking anchor rod is characterized by comprising the following steps:
a. the adjusting nut (34) is rotated to move left and right on the anchor rod body (11), the position of the tensioning assembly at the left part of the anchor rod body (11) is adjusted, and the position is limited by the adjusting nut (34);
b. placing an anchor rod body (11) in a drill hole, positioning an anchor head assembly at the left end of the anchor rod body (11) at the bottom of the drill hole, knocking the anchor rod body (11) to move towards the bottom of the drill hole, moving the left end of the anchor rod body (11) to the left in a blind cavity (22), compressing a second spring (24), enabling the second spring (24) to act on a sleeve (5) of a tensioning assembly in a reverse elastic manner, enabling the sleeve (5) and a positioning sleeve (33) to move in a relative extrusion manner under the limiting action of an adjusting nut (34), embedding the left end of the positioning sleeve (33) between a plurality of gathered supporting and expanding rods (31), enabling a binding band (4) wound on the plurality of supporting and expanding rods (31) to be broken, and enabling the left end of each supporting and expanding rod (31) to rotate on the sleeve (5), and enabling the right end to expand to contact with the inner wall of the drill hole to tension the inner wall of the drill hole;
c. then the fastening nut (13) is rotated to drive the anchor rod body (11) to move rightwards, the second spring (24) compresses acting force on the sleeve (5), so that the end head of the support expansion rod (31) is embedded into the drill hole to be locked, and the left side is limited by the contact of the fixing head (21) and the sleeve (5); after the anchor rod body (11) is locked and fixed in the drill hole, the anchor backing plate (12) is opened and the filler is poured into the drill hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110319294.4A CN113279797A (en) | 2021-03-25 | 2021-03-25 | Tension type locking anchor rod and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110319294.4A CN113279797A (en) | 2021-03-25 | 2021-03-25 | Tension type locking anchor rod and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113279797A true CN113279797A (en) | 2021-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110319294.4A Pending CN113279797A (en) | 2021-03-25 | 2021-03-25 | Tension type locking anchor rod and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113279797A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087002A (en) * | 2021-11-23 | 2022-02-25 | 中铁大桥局集团第四工程有限公司 | Shell expansion type anchor rod |
| CN116446932A (en) * | 2023-06-01 | 2023-07-18 | 中国安能集团第一工程局有限公司 | Weak surrounding rock supporting system |
-
2021
- 2021-03-25 CN CN202110319294.4A patent/CN113279797A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087002A (en) * | 2021-11-23 | 2022-02-25 | 中铁大桥局集团第四工程有限公司 | Shell expansion type anchor rod |
| CN114087002B (en) * | 2021-11-23 | 2024-01-16 | 中铁大桥局集团第四工程有限公司 | Shell-expanding anchor rod |
| CN116446932A (en) * | 2023-06-01 | 2023-07-18 | 中国安能集团第一工程局有限公司 | Weak surrounding rock supporting system |
| CN116446932B (en) * | 2023-06-01 | 2023-09-26 | 中国安能集团第一工程局有限公司 | Weak surrounding rock supporting system |
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