CN113250191A - Expansion type yielding anchor rod - Google Patents
Expansion type yielding anchor rod Download PDFInfo
- Publication number
- CN113250191A CN113250191A CN202110740892.9A CN202110740892A CN113250191A CN 113250191 A CN113250191 A CN 113250191A CN 202110740892 A CN202110740892 A CN 202110740892A CN 113250191 A CN113250191 A CN 113250191A
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- Prior art keywords
- anchor rod
- pivot
- expansion
- sliding block
- expansion type
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- 230000005540 biological transmission Effects 0.000 claims abstract description 46
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 239000011435 rock Substances 0.000 description 24
- 238000004873 anchoring Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
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- 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
- 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
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
-
- 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
Abstract
The invention relates to an expansion type yielding anchor rod, and belongs to the technical field of anchor rods. The expansion type yielding anchor rod comprises an outer anchor rod barrel, an inner anchor rod expansion body, a sliding block, a sliding chute, a transmission member, a pivot shaft, a support rod, an anchor rod cap and a bearing, wherein the pivot shaft is arranged in the outer anchor rod barrel along the axial center and penetrates through the closed end of the outer anchor rod barrel; the inner ring of the bearing is fixed on the pivot, the outer ring outer wall of the bearing is contacted with the inner wall of the outer anchor rod barrel, the outer anchor rod barrel is provided with a through hole along the axial direction, the inner anchor rod body expanding body is arranged in the through hole in a penetrating mode, the inner side of the inner anchor rod body expanding body is fixedly provided with a sliding block, the pivot is provided with a disc through a ball bearing, the disc is provided with a sliding groove along the radial direction, the sliding block is arranged in the sliding groove in a sliding mode, and the sliding block is connected with the pivot through a transmission component. The invention combines timely support and improves the extension capability of the anchor rod system.
Description
Technical Field
The invention relates to an expansion type yielding anchor rod, and belongs to the technical field of anchor rods.
Background
In the process of mining, slope engineering and other underground excavation construction, broken surrounding rocks, loose rock masses and the like need to be reinforced to prevent collapse and collapse, and the anchor rod is the most common support mode in surrounding rock support and can be used as a tension member penetrating into a stratum, so that the self-stability and self-bearing capacity of rock and soil media around the anchor rod can be fully exerted, external loads can be effectively transmitted by means of a structure, the expansion of harmful deformation is controlled, and the stability of the structure or an excavation face is ensured.
The grouting and anchoring process includes drilling anchor hole in the surrounding rock, injecting resin cross-fixing agent into the drilled anchor hole, and inserting the anchor rod into the drilled anchor hole to anchor the anchor rod and the surrounding rock. The anchoring mode can not ensure the sufficient mixing of the medicament, can not play a good role in adhesion, is easy to cause anchor dropping accidents, has longer anchoring time required by grouting anchoring, is complicated to construct and can not play a role in timely supporting.
Along with the continuous increase of mining depth, side slope gradient. The rock stratum often shows the characteristics of large deformation, the elongation of the traditional anchor rod material cannot adapt to the large deformation, and accidents caused by fracture failure due to the fact that supporting structures such as anchor rods and the like bear tensile force exceeding the tensile limit are not enumerated.
Disclosure of Invention
The invention provides an expansion type yielding anchor rod aiming at the problems of the existing anchor rod, the expansion type yielding anchor rod combines timely support and improvement of the extension capability of an anchor rod system, grouting solidification is not needed, the operation is simple, the construction period is greatly shortened, stress generated by an inner anchor rod body extension body when surrounding rock deforms is cut by a slide block, the yielding effect is achieved, and the extension capability of the anchor rod system is greatly improved; the number of the expansion yielding systems in the outer anchor rod cylinder body is increased and decreased by analyzing the distribution range of the axial force of the anchoring section, so that not only can materials be saved, but also the anchoring performance and the anchoring force of the anchor rod can be effectively enhanced.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an expansion yielding anchor rod comprises an outer anchor rod cylinder body 1, an expansion yielding device, a pivot 7, a support rod 8, an anchor rod cap 10 and a bearing 12,
a pivot shaft 7 is arranged in the outer anchor rod barrel 1 along the axial center, the pivot shaft 7 penetrates through the closed end of the outer anchor rod barrel 1, an anchor rod cap 10 is fixedly arranged at the end of the pivot shaft 7, the anchor rod cap 10 is close to the closed end of the anchor rod barrel 1, and a support rod 8 is obliquely arranged at the closed end of the anchor rod barrel 1;
the expansion yielding device comprises an inner anchor rod expansion body 2, a sliding block 4, a sliding groove and a transmission member;
the inner ring of the bearing 12 is fixed on the pivot 7, the outer wall of the outer ring of the bearing 12 is contacted with the inner wall of the outer anchor rod barrel 1, the outer anchor rod barrel 1 is provided with a through hole along the circumferential direction, the inner anchor rod body expanding body 2 is arranged in the through hole in a penetrating way, the inner side of the inner anchor rod body expanding body 2 is fixedly provided with a slide block 4, the pivot 7 is sleeved with a ball bearing, the outer ring of the ball bearing is fixedly provided with a disc, the disc is provided with a slide groove along the radial direction, the slide block 4 is arranged in the slide groove in a sliding way, and the slide block 4 is connected with the pivot 7 through a transmission component;
in the outer anchor rod barrel body 1, according to the requirements of different stress sections, a plurality of bearings 12 can be arranged between adjacent expansion yielding devices, and the outer walls of the outer rings of the bearings 12 are all contacted with the inner wall of the outer anchor rod barrel body 1;
a bolt hole is formed in the side wall of the sliding chute, a telescopic shear bolt III is fixedly arranged in the bolt hole, and the shear bolt III is perpendicular to the sliding direction of the sliding block 4;
further, three groups of bolt holes are formed in the side wall of the sliding groove in parallel along the sliding direction of the sliding block, and telescopic shear bolts III are fixedly arranged in the three groups of bolt holes; the shear bolts III can prevent the rotation of a single inner anchor rod expansion body from influencing the movement of other inner anchor rod expansion bodies which are not moved; as shown in fig. 4, AA '> BB' > CC ', the smaller the diameter, the smaller the shear load, when the 1 st set of shear bolts (A, A') are sheared; then the 2 nd group of shear bolts (B, B') enters a stress condition; when the middle shear bolt is sheared; at the moment, the 3 rd group of shear bolts (C, C') of the pressure yielding device enter a stress state to play a role in yielding pressure;
preferably, a spring is fixedly arranged at the bottom end of the bolt hole, the other end of the spring is fixedly connected with the end head of the shear bolt III, and the shear bolts 3 in the sliding groove are ejected outwards one by one under the action of the spring in the process that the sliding block 4 moves outwards;
further, the transmission component comprises a transmission shaft 5, a rotating disk 6 and a gear 13, the gear 13 is fixedly arranged on the pivot 7, an inner ring of the rotating disk 6 is in meshing transmission with the gear 13, a pin shaft I is fixedly arranged on the rotating disk 6, one end of the transmission shaft 5 is sleeved on the pin shaft I, the transmission shaft 5 can rotate around the pin shaft I, a pin shaft II is fixedly arranged on the sliding block 4, and the other end of the transmission shaft 5 is sleeved on the pin shaft II, and the pin shaft II can rotate around the pin shaft II.
The empty area with the same size as the gear 13 is arranged below the rotating disc 6 and is positioned in the axial direction of the pivot 7, after the inner anchor rod expansion body is contacted with the rock wall, the gear 13 on the pivot 7 is separated from the rotating disc 6 by pushing the anchor rod cap 10, the gear 13 is clamped into the empty area, the pivot 7 is prevented from rotating when the inner anchor rod expansion body performs yielding action, the anchor rod cap 10 is pulled to drive the nut 9 fixed on the pivot 7 to move along the axial direction, the end part of the supporting rod 8 fixed on the nut 9 moves outwards along with the nut, and the tension rod 11 fixed on the supporting rod 8 blocks the supporting rod 8 to move outwards, so that the supporting rod 8 is clamped into the rock wall to fix the whole anchor rod;
further, the transmission shaft 5 is an arc-shaped transmission shaft.
The bottom of branch 8 is connected with the center of the closed end of stock barrel 1 through rolling bearing, and the middle part of branch 8 is connected with the edge of the closed end of stock barrel 1 through tension bar 11.
Further, the center of the closed end of the anchor rod barrel body 1 is fixedly provided with a nut 9, and the bottom end of the support rod 8 is connected with the center of the nut 9 through a rotating bearing.
The expansion type lets presses the terminal interior stock extension body 2 of stock to constitute by 4 fan-shaped extension bodies that the angle is 90, and the radius of interior stock extension body equals with the radius of outer stock barrel 1, and the expansion type lets presses the interior stock extension body 2 at stock middle part to be a plurality of ring post structure, along circumferential through-hole and ring post structure phase-match on the outer stock barrel 1.
4 fan-shaped expanding bodies with the angle of 90 degrees are uniformly distributed on the end surface of the outer anchor rod cylinder body 1.
The use method of the expansion type yielding anchor rod comprises the following steps:
(1) inserting an expansion type yielding anchor rod into a pre-opened hole, exposing an anchor rod cap outside the hole, rotating the anchor rod cap 10 to drive a pivot shaft 7 to rotate, rotating a gear 13 on the pivot shaft 7 along with the pivot shaft 7, driving a rotating disk 6 meshed with the gear 13 to rotate by the gear 13, wherein one end of a transmission shaft 5 is sleeved on a pin shaft I, the transmission shaft 5 can rotate around the pin shaft I, a pin shaft II is fixedly arranged on a sliding block 4, the other end of the transmission shaft 5 is sleeved on the pin shaft II, and the pin shaft II can rotate around the pin shaft II, so that the transmission shaft 5 drives the sliding block 4 to slide along a sliding chute, and the inner anchor rod expanding body 2 is expanded outwards, namely moves away from the pivot shaft 7 to be in close contact with a rock wall;
(2) pulling the anchor rod cap 10 to drive the nut 9 fixed on the pivot 7 to move along the axial direction, the end part of the supporting rod 8 fixed on the nut 9 also moves outwards, and the tension rod 11 fixed on the supporting rod 8 blocks the supporting rod 8 to move outwards, so that the supporting rod 8 is expanded and clamped in the rock wall, and the whole expansion type yielding anchor rod is fixed in the hole;
(3) because the rotating anchor rod cap 10 drives the sliding block 4 on the inner anchor rod extension body 2 to move outwards perpendicular to the outer anchor rod barrel body 1, in the process that the sliding block 4 moves outwards, the shear bolts 3 in the sliding groove pop outwards one by one, the shear bolts 3 prevent the sliding block 4 from sliding towards the lower pivot 7, when the stress in the rock body acts on the shear bolts 3, the shear bolts 3 are sheared downwards by the sliding block 4 under the action of the stress, meanwhile, the shear bolts 3 in the sliding block 4 are sheared by the pin shaft on the transmission shaft 5, when the pressure is applied to the inner anchor rod extension body, the sliding block moves downwards along the sliding groove, the pin shaft on the transmission shaft 5 moves upwards, and the shear bolts prevent the transmission shaft from being driven to rotate when the sliding block moves, so that other unstressed inner anchor rod extension bodies move;
(4) after the pivot 7 stops rotating, the anchor rod cap 10 is pulled to drive the nut 9 to move outwards to drive the end part of the supporting rod 8 to move outwards, and the tension rod 11 applies inward tension to the supporting rod 8 to expand the supporting rod 8 to be clamped into the rock wall, so that the whole anchor rod is fixed.
The invention has the beneficial effects that:
(1) after the anchor rod expanding body is inserted into a drilled hole, the inner anchor rod expanding body arranged in the outer anchor rod cylinder body expands and expands by rotating the anchor rod cap so as to be clamped in the hole, and the pivot shaft moves outwards along the shaft by pulling the anchor rod cap to drive the nut to move outwards to extrude the supporting rod to expand outwards and clamp the supporting rod into a rock wall to fix the whole anchor rod so as to improve the durability and safety of anchoring;
(2) when the inner anchor rod expansion body is stressed, the shear-resistant bolt is sheared through the sliding block, so that the pressure yielding effect can be achieved, and the extension capacity of the anchor rod system is greatly improved;
(3) according to the invention, the number of the expansion yielding systems in the outer anchor rod cylinder is increased or decreased according to the distribution interval of the axial force of the anchoring section, so that not only can materials be saved, but also the anchoring performance and the anchoring force of the anchor rod can be effectively enhanced.
Drawings
FIG. 1 is a top view of an expansion type yielding bolt;
FIG. 2 is a schematic view of an expansion yielding device;
fig. 3 is a side view of an expanding type yielding bolt (without a bolt cap);
FIG. 4 is a shear bolt structural view;
in the figure, 1-outer anchor rod barrel, 2-inner anchor rod body expanding body, 3-shear bolt, 4-sliding block, 5-transmission shaft, 6-rotating disc, 7-pivot, 8-supporting rod, 9-nut, 10-anchor rod cap, 11-tension rod, 12-bearing, 13-gear and 14-disc.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Example 1: as shown in fig. 1, the expansion type yielding rock bolt comprises an outer rock bolt barrel 1, an expansion yielding device, a pivot 7, a support rod 8, a rock bolt cap 10 and a bearing 12,
a pivot shaft 7 is arranged in the outer anchor rod barrel 1 along the axial center, the pivot shaft 7 penetrates through the closed end of the outer anchor rod barrel 1, an anchor rod cap 10 is fixedly arranged at the end of the pivot shaft 7, the anchor rod cap 10 is close to the closed end of the anchor rod barrel 1, and a support rod 8 is obliquely arranged at the closed end of the anchor rod barrel 1;
the expansion yielding device comprises an inner anchor rod expansion body 2, a sliding block 4, a sliding groove and a transmission member;
the inner ring of the bearing 12 is fixed on the pivot 7, the outer wall of the outer ring of the bearing 12 is contacted with the inner wall of the outer anchor rod barrel 1, the outer anchor rod barrel 1 is provided with a through hole along the circumferential direction, the inner anchor rod body expanding body 2 is arranged in the through hole in a penetrating way, the inner side of the inner anchor rod body expanding body 2 is fixedly provided with a slide block 4, the pivot 7 is sleeved with a ball bearing, the outer ring of the ball bearing is fixedly provided with a disc, the disc is provided with a slide groove along the radial direction, the slide block 4 is arranged in the slide groove in a sliding way, and the slide block 4 is connected with the pivot 7 through a transmission component;
in the outer stock barrel 1, according to the demand of the stress section of difference, can be equipped with a plurality of bearing 12 between the adjacent inflation lets the pressure equipment, the outer wall of the outer lane of bearing 12 all contacts with the inner wall of outer stock barrel 1.
Example 2: the expansion type yielding anchor rod of the embodiment is basically the same as the expansion type yielding anchor rod of the embodiment 1, and the difference is that: as shown in fig. 2, a bolt hole is formed in the side wall of the chute, and a telescopic shear bolt III is fixedly arranged in the bolt hole, and is perpendicular to the sliding direction of the slider 4;
the transmission component comprises a transmission shaft 5, a rotating disk 6 and a gear 13, the gear 13 is fixedly arranged on the pivot shaft 7, an inner ring of the rotating disk 6 is in meshed transmission with the gear 13, a pin shaft I is fixedly arranged on the rotating disk 6, one end of the transmission shaft 5 is sleeved on the pin shaft I, the transmission shaft 5 can rotate around the pin shaft I, a pin shaft II is fixedly arranged on the sliding block 4, the other end of the transmission shaft 5 is sleeved on the pin shaft II, and the pin shaft II can rotate around the pin shaft II;
the empty area with the same size as the gear 13 is arranged below the rotating disc 6 and is positioned in the axial direction of the pivot 7, after the inner anchor rod expansion body is contacted with the rock wall, the gear 13 on the pivot 7 is separated from the rotating disc 6 by pushing the anchor rod cap 10, the gear 13 is clamped into the empty area, the pivot 7 is prevented from rotating when the inner anchor rod expansion body performs yielding action, the anchor rod cap 10 is pulled to drive the nut 9 fixed on the pivot 7 to move along the axial direction, the end part of the supporting rod 8 fixed on the nut 9 moves outwards along with the nut, and the tension rod 11 fixed on the supporting rod 8 blocks the supporting rod 8 to move outwards, so that the supporting rod 8 is clamped into the rock wall to fix the whole anchor rod;
the transmission shaft 5 is an arc-shaped transmission shaft;
the bottom end of the supporting rod 8 is connected with the center of the closed end of the anchor rod cylinder 1 through a rotating bearing, and the middle part of the supporting rod 8 is connected with the edge of the closed end of the anchor rod cylinder 1 through a tension rod 11;
a nut 9 is fixedly arranged in the center of the closed end of the anchor rod barrel body 1, and the bottom end of the support rod 8 is connected with the center of the nut 9 through a rotating bearing;
the inner anchor rod expansion body 2 at the tail end of the expansion type yielding anchor rod consists of 4 fan-shaped expansion bodies with the angle of 90 degrees, the radius of each fan-shaped expansion body is equal to that of the outer anchor rod barrel body 1, the inner anchor rod expansion body 2 in the middle of the expansion type yielding anchor rod is of a plurality of circular ring column structures, and through holes in the circumferential direction on the outer anchor rod barrel body 1 are matched with the circular ring column structures;
4 fan-shaped expansion bodies with the angle of 90 degrees are uniformly distributed on the end surface of the outer anchor rod cylinder body 1;
the use method of the expansion type yielding anchor rod comprises the following steps:
(1) inserting an expansion type yielding anchor rod into a pre-opened hole, exposing an anchor rod cap outside the hole, rotating the anchor rod cap 10 to drive a pivot shaft 7 to rotate, rotating a gear 13 on the pivot shaft 7 along with the pivot shaft 7, driving a rotating disk 6 meshed with the gear 13 to rotate by the gear 13, wherein one end of a transmission shaft 5 is sleeved on a pin shaft I, the transmission shaft 5 can rotate around the pin shaft I, a pin shaft II is fixedly arranged on a sliding block 4, the other end of the transmission shaft 5 is sleeved on the pin shaft II, and the pin shaft II can rotate around the pin shaft II, so that the transmission shaft 5 drives the sliding block 4 to slide along a sliding chute, and the inner anchor rod expanding body 2 is expanded outwards, namely moves away from the pivot shaft 7 to be in close contact with a rock wall;
(2) pulling the anchor rod cap 10 to drive the nut 9 fixed on the pivot 7 to move along the axial direction, the end part of the supporting rod 8 fixed on the nut 9 also moves outwards, and the tension rod 11 fixed on the supporting rod 8 blocks the supporting rod 8 to move outwards, so that the supporting rod 8 is expanded and clamped in the rock wall, and the whole expansion type yielding anchor rod is fixed in the hole;
(3) because the rotating anchor rod cap 10 drives the sliding block 4 on the inner anchor rod extension body 2 to move outwards perpendicular to the outer anchor rod barrel body 1, in the process that the sliding block 4 moves outwards, the shear bolts 3 in the sliding groove pop outwards one by one, the shear bolts 3 prevent the sliding block 4 from sliding towards the lower pivot 7, when the stress in the rock body acts on the shear bolts 3, the shear bolts 3 are sheared downwards by the sliding block 4 under the action of the stress, meanwhile, the shear bolts 3 in the sliding block 4 are sheared by the pin shaft on the transmission shaft 5, when the pressure is applied to the inner anchor rod extension body, the sliding block moves downwards along the sliding groove, the pin shaft on the transmission shaft 5 moves upwards, and the shear bolts prevent the transmission shaft from being driven to rotate when the sliding block moves, so that other unstressed inner anchor rod extension bodies move;
(4) after the pivot 7 stops rotating, the anchor rod cap 10 is pulled to drive the nut 9 to move outwards to drive the end part of the supporting rod 8 to move outwards, and the tension rod 11 applies inward tension to the supporting rod 8 to expand the supporting rod 8 to be clamped into the rock wall, so that the whole anchor rod is fixed.
Example 2: the expansion type yielding anchor rod of the embodiment is basically the same as the expansion type yielding anchor rod of the embodiment 1, and the difference is that: three bolt holes are formed in the side wall of the sliding groove in parallel along the sliding direction of the sliding block, and telescopic shear bolts III are fixedly arranged in the three bolt holes; the shear bolts III can prevent the rotation of a single inner anchor rod expansion body from influencing the movement of other inner anchor rod expansion bodies which do not move, and can also play a role in yielding, the yielding principle is shown in FIG. 4, the smaller the diameter of AA '> BB' > CC 'is, the smaller the shear load is, and when a 1 st group of shear bolts (A, A') are sheared; then the 2 nd group of shear bolts (B, B') enters a stress condition; when the middle shear bolt is sheared; at the moment, the 3 rd group of shear bolts (C, C') of the pressure-yielding device enter a stress condition and can play a role in yielding.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes and modifications can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (7)
1. The utility model provides an inflation formula lets pressure stock which characterized in that: comprises an outer anchor rod cylinder body (1), an expansion yielding device, a pivot (7), a support rod (8), an anchor rod cap (10) and a bearing (12),
a pivot (7) is arranged in the outer anchor rod cylinder (1) along the axial center, the pivot (7) penetrates through the closed end of the outer anchor rod cylinder (1), an anchor rod cap (10) is fixedly arranged at the end of the pivot (7), the anchor rod cap (10) is close to the closed end of the anchor rod cylinder (1), and a support rod (8) is obliquely arranged at the closed end of the anchor rod cylinder (1);
the expansion yielding device comprises an inner anchor rod expansion body (2), a sliding block (4), a sliding groove and a transmission member, wherein the inner ring of a bearing (12) is fixed on a pivot (7), the outer ring outer wall of the bearing (12) is in contact with the inner wall of an outer anchor rod barrel body (1), a through hole is formed in the outer anchor rod barrel body (1) along the circumferential direction, the inner anchor rod expansion body (2) is arranged in the through hole in a penetrating mode, the sliding block (4) is fixedly arranged on the inner side of the inner anchor rod expansion body (2), a ball bearing is sleeved on the pivot (7), a disc is fixedly arranged on the outer ring of the ball bearing, the sliding groove is formed in the disc along the radial direction, the sliding block (4) is arranged in the sliding groove in a sliding mode, and the sliding block (4) is connected with the pivot (7) through the transmission member.
2. The expansion type yielding bolt according to claim 1, wherein: the side wall of the sliding groove is provided with a bolt hole, a telescopic shear bolt III is fixedly arranged in the bolt hole, and the shear bolt III is perpendicular to the sliding direction of the sliding block (4).
3. The expansion type yielding bolt according to claim 2, wherein: the transmission component comprises a transmission shaft (5), a rotating disk (6) and a gear (13), the gear (13) is fixedly arranged on a pivot (7), an inner ring of the rotating disk (6) is in meshing transmission with the gear (13), a pin shaft I is fixedly arranged on the rotating disk (6), a pot head of the transmission shaft (5) is arranged on the pin shaft I, the transmission shaft (5) can rotate around the pin shaft I, a pin shaft II is fixedly arranged on a sliding block (4), the other pot head of the transmission shaft (5) is arranged on the pin shaft II, and the pin shaft II can rotate around the pin shaft II.
4. The expansion type yielding bolt according to claim 3, wherein: the transmission shaft (5) is an arc-shaped transmission shaft.
5. The expansion type yielding bolt according to claim 1, wherein: the bottom end of the supporting rod (8) is connected with the center of the closed end of the anchor rod cylinder body (1) through a rotating bearing, and the middle part of the supporting rod (8) is connected with the edge of the closed end of the anchor rod cylinder body (1) through a tension rod (11).
6. The expansion type yielding bolt according to claim 5, wherein: the center of the closed end of the anchor rod cylinder body (1) is fixedly provided with a nut (9), and the bottom end of the supporting rod (8) is connected with the center of the nut (9) through a rotating bearing.
7. The expansion type yielding bolt according to claim 1, wherein: the expansion type lets presses interior stock extension body (2) at stock end and comprises 4 fan-shaped extension bodies that the angle is 90, and the radius of interior stock extension body equals with the radius of outer stock barrel (1), and the expansion type lets presses interior stock extension body (2) at stock middle part for the ring column structure, goes up along circumferential through-hole and ring column structure phase-match on outer stock barrel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110740892.9A CN113250191B (en) | 2021-07-01 | 2021-07-01 | Expansion type yielding anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110740892.9A CN113250191B (en) | 2021-07-01 | 2021-07-01 | Expansion type yielding anchor rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113250191A true CN113250191A (en) | 2021-08-13 |
| CN113250191B CN113250191B (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110740892.9A Active CN113250191B (en) | 2021-07-01 | 2021-07-01 | Expansion type yielding anchor rod |
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| CN (1) | CN113250191B (en) |
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|---|---|---|---|---|
| CN201601095U (en) * | 2009-08-18 | 2010-10-06 | 张文权 | Intelligent operating device for molded case circuit breaker |
| CN104832201A (en) * | 2015-04-30 | 2015-08-12 | 广西大学 | Expansion type anchor rod |
| WO2015174737A1 (en) * | 2014-05-14 | 2015-11-19 | (주)삼일이엔씨 | Self-diameter-enlarging pile, and method for constructing same |
| CN210483769U (en) * | 2019-06-04 | 2020-05-08 | 中交一公局集团有限公司 | End expansion anchor rod |
-
2021
- 2021-07-01 CN CN202110740892.9A patent/CN113250191B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201601095U (en) * | 2009-08-18 | 2010-10-06 | 张文权 | Intelligent operating device for molded case circuit breaker |
| WO2015174737A1 (en) * | 2014-05-14 | 2015-11-19 | (주)삼일이엔씨 | Self-diameter-enlarging pile, and method for constructing same |
| CN104832201A (en) * | 2015-04-30 | 2015-08-12 | 广西大学 | Expansion type anchor rod |
| CN210483769U (en) * | 2019-06-04 | 2020-05-08 | 中交一公局集团有限公司 | End expansion anchor rod |
Non-Patent Citations (1)
| Title |
|---|
| 黄河等: "新型让压锚杆力学特性试验及承载变形机理研究", 《市政技术》 * |
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| Publication number | Publication date |
|---|---|
| CN113250191B (en) | 2022-06-07 |
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