CN206346766U - The anchor shaft anchor cable shell anchor head that rises - Google Patents
The anchor shaft anchor cable shell anchor head that rises Download PDFInfo
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- CN206346766U CN206346766U CN201621239449.4U CN201621239449U CN206346766U CN 206346766 U CN206346766 U CN 206346766U CN 201621239449 U CN201621239449 U CN 201621239449U CN 206346766 U CN206346766 U CN 206346766U
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Abstract
A kind of anchor shaft anchor cable shell anchor head that rises, is made up of the shell intermediate plate that rises, the screw thread body of rod, steel screw bushing, connecting plate, steel bushing etc..Threaded rod body rises in the middle of shell intermediate plate positioned at two, and its afterbody is thread segment, reverse thread, assembles steel screw bushing；Its head is light bar segment, assembles steel bushing；There is head termination.Steel screw bushing, steel bushing both sides have load plate on small axle, small axle, and small axle of the connecting plate respectively with the shell intermediate plate afterbody that rises, head both sides is hinged.Or be made up of the double thread body of rod instead of the screw thread body of rod；Double thread body of rod afterbody is still thread segment；Head is forward screw thread section, assembles forward screw thread steel bushing；Remaining is same with the former.Screw thread body of rod tail end is connected firmly with anchor shaft anchor cable front end is used as end anchor.The reach of screw thread body of rod rotation forces steel screw bushings is driven when anchor shaft anchor cable is installed, makes two to rise shell intermediate plate spreading jam-packed hole wall by connecting plate.Suitable for pole Soft and Cracked Rocks anchoring support, large-diameter borehole anchoring is also used for.Anchor diameter increase and adjustable, improve anchor force.
Description
Technical field
The utility model is related to mine support, rock anchorage field, and particularly one kind is in mine soft rock mass, kata-rocks
It is used as the anchor shaft anchor cable shell anchor head that rises of anchor pole or anchor cable end anchor in body, large aperture supporting.
Background technology
China mine increases year by year with mining depth, and roadway support difficulty is increasing, particularly in mining in soft rock mining and height
Under the conditions of Stress superposition, roadway deformation fast convergence rate, tunnel broken circle scope greatly, makes roadway support and safeguarded to be stranded very much
It is difficult.For soft rock mass and coal body tunnel, generally using resin anchoring agent progress end anchor, and resin anchoring agent and weak coal and rock
Adhesion strength is low, be difficult in adapt to country rock large deformation.Also have using the anchoring of mechanical expanding shell anchor head, i.e., using the wedge grip with sawtooth
Piece is fixed on anchor head both sides, when anchor pole or anchor cable are attached to drilling hole bottom, and rotation anchor pole or anchor cable squeeze into its front end body of rod
Wedge shape rises in the middle of shell, and then makes rise shell and hole wall of wedge shape extrude to form frictional force by anchor pole or anchor cable end anchor.This mechanical expanding shell
Anchor head diameter is generally 20~25mm, and wedge shape rises by the complete expanded diameter of shell up to 40~50mm, and for especially soft coal
Body and completely broken rock mass, even if mechanical expanding shell anchor head expands completely, diameter reaches 50mm, will not also be formed effectively with hole wall
Frictional resistance, this causes mechanical expanding shell anchor head to have certain limitation and failure may.
The content of the invention
Use resin anchoring agent anchoring strength low and using mechanical expanding shell in country rock smashed to pieces and coal body tunnel to overcome
Anchor head swell diameter is small, and anchor pole or anchorage cable anchoring power are difficult to the deficiency for reaching design standard, and the utility model provides a kind of anchor pole
The anchor cable shell anchor head that rises, the need for it can be applicable mine dead-soft, country rock area smashed to pieces roadway bolt or anchor cable end anchor, it anchors straight
Footpath can also solve the problem of loose and soft surrounding rock large aperture is difficult to anchoring up to 30~120mm, and simple in construction, easy to use.
The utility model is to solve the technical scheme that is used of above-mentioned technical problem：
A kind of anchor shaft anchor cable shell anchor head that rises, is risen shell intermediate plate by the two panels for constituting the shell that rises, two rise shell intermediate plate centre one
Part screw thread body of rod etc. is constituted.It is that light bar segment, head termination have the threaded rod of head that the screw thread body of rod, which is afterbody for thread segment, its head,
Body.The screw thread of the thread segment of the screw thread body of rod is reverse thread, is equipped with steel screw bushing thereon；Head diameter is more than the body of rod；Polished rod
Steel bushing, front end face and the head interior side contacts of steel bushing are equipped with section.Steel screw bushing is cylindrical shape, has internal thread, and both sides have small
Connecting plate is housed on axle, small axle.Steel bushing is cylindrical shape, and both sides, which have, is equipped with connecting plate on small axle, small axle；In the front end face and head of steel bushing
Side contacts.Respectively there is a small axle the rise inner face both sides of shell intermediate plate afterbody, and small axle is connected by support and the shell intermediate plate that rises.The small axle of both sides
It is upper that connecting plate is housed, the connecting plate of both sides be hingedly connected to rise shell intermediate plate two sides of tail small axle and steel screw bushing both sides small axle it
Between.Respectively there is a small axle the rise inner face both sides on shell intermediate plate head, and small axle is connected by support and the shell intermediate plate that rises；Pacify on the small axle of both sides
Equipped with connecting plate, the connecting plate of both sides is hingedly connected to rise between the small axle of shell intermediate plate head both sides and the small axle of steel bushing both sides.
Or, the described screw thread body of rod is the double thread body of rod that afterbody is thread segment, its head is forward screw thread section.It is double
Steel screw bushing is equipped with the thread segment of the head thread body of rod；Forward screw thread steel bushing is equipped with forward screw thread section.Forward screw thread steel
Cover for cylindrical shape, the rotation direction of its internal thread and thread segment on the contrary, its both sides, which has, is equipped with connecting plate, the small axle in both sides on small axle, small axle
On connecting plate be hingedly connected to and rise between the small axle of the small axle of shell intermediate plate head both sides and forward screw thread steel bushing both sides.Screw-thread steel
Connecting plate on the set small axle in both sides is hingedly connected to rise between the small axle of shell intermediate plate two sides of tail and the small axle of steel screw bushing both sides.
Position lag of the front end of the screw thread body of rod than shell intermediate plate front end of rising.Screw thread body of rod tail end and anchor rod body or anchor cable rope
The head of body connects firmly one, oppositely oriented when the thread rotary orientation of thread segment is installed with anchor pole or anchor cable.When anchor rod body or anchor
When rustling sound body is installed, moved after the screw thread body of rod will be driven to rotate and steel screw bushing reach, steel bushing or forward screw thread steel bushing is promoted, two rise
Shell intermediate plate spreading.
The beneficial effects of the utility model are：
1. mechanical expanding shell anchor head is constituted using leading screw and nut mechanism, connecting plate linkwork, considerably increases the shell anchor head that rises
Diameter is anchored, anchor force can be improved, it is ensured that anchoring is reliable.Extremely soft country rock, condition lower bolt smashed to pieces or anchor cable end can be applicable
The need for anchor, prevent bore expanded hole or hole wall are crushed from causing fastening invalidation, be also applied for the end anchor of large aperture anchor pole or anchor cable.
2. anchoring diameter can increase connecting plate length according to live bore diameter and be adjusted, and site operation is simple, easy to operate.
3. simple in construction, easy to process, cost is relatively low.
Brief description of the drawings
Fig. 1：Structural representation front view when the shell anchor head that rises of anchor shaft anchor cable is closed.
Fig. 2：The structural representation top view of the shell anchor head that rises of anchor shaft anchor cable.
Fig. 3：Structural representation when the shell anchor head that rises of anchor shaft anchor cable opens.
Fig. 4 a：Ι-Ι sectional views in Fig. 1.
Fig. 4 b：Ι '-Ι ' sectional views in Fig. 3.
Fig. 5 a：The profile that the shell intermediate plate that rises is fixed with one with Ω shape support frames.
Fig. 5 b：A direction views in Fig. 5 a.
Fig. 6 a, Fig. 6 b：Structural representation front view, the side view of steel screw bushing.
Fig. 7 a, Fig. 7 b：Structural representation left side view, the front view of steel bushing
Fig. 7 c：The structural representation of connecting plate.
Fig. 8：The structural representation of the screw thread body of rod.
Fig. 9：Double thread bar structure schematic diagram.
In figure：The 1- screw threads body of rod, 2- rise shell intermediate plate, 3- steel screw bushings, 4- connecting plates, 5- Ω shapes support frame, 6- steel bushings, 7- gear
Circle, the small axles of 8-, the 9- double threads body of rod, 10- forward screw thread steel bushings；C- circlip grooves, L- thread segments, L '-forward screw thread section, G- light
Bar segment, T- heads.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
Embodiment 1：
A kind of structure of the anchor shaft anchor cable with the shell anchor head that rises is shown in Fig. 1,2.It is by the shell intermediate plate 2 that rises, the screw thread body of rod 1, spiral shell
Line steel bushing 3, connecting plate 4, Ω shapes support frame 5 and steel bushing 6 etc. are constituted.
The two panels shell intermediate plate 2 that rises of shell anchor head of rising is constituted and risen shell.The rise outside of cross section of shell intermediate plate 2 is circular arc, vertical cut
The outside in face is zigzag.Rise shell intermediate plate 2 medial surface be cylindric cambered surface.The two opposite symmetrical cloth of medial surface for rising by shell intermediate plate 2
Put.
There is a screw thread body of rod 1 two centres for rising by shell intermediate plate 2.The screw thread body of rod 1 be afterbody illustrate left end for thread segment L, its
Head is that light bar segment G, its head termination have the head T screw thread body of rod.The thread segment L of the screw thread body of rod 1 screw thread is reverse thread, it
On be equipped with steel screw bushing 3.Head T diameter is more than the body of rod.Steel bushing 6, front end face and the head T of steel bushing 6 are equipped with light bar segment G
Interior side contacts.Steel screw bushing 3 is cylindrical shape, has internal thread, and both sides, which have, is equipped with connecting plate 4 on small axle 8, small axle 8.Steel bushing 6 is cylinder
Shape, both sides, which have, is equipped with connecting plate 4 on small axle 8, small axle 8；The front end face of steel bushing 6 and head T interior side contacts.
Respectively there is a small axle 8 the rise inner face both sides of the afterbody of shell intermediate plate 2, and small axle 8 is connected by support and the shell intermediate plate 2 that rises；Both sides
Small axle 8 on connecting plate 4 is housed, the connecting plate 4 of both sides is hingedly connected to rise 3 liang of the small axle 8 and steel screw bushing of the two sides of tail of shell intermediate plate 2
Between the small axle 8 of side.
Respectively there is a small axle 8 the rise inner face both sides on the head of shell intermediate plate 2, and small axle 8 is connected by support and the shell intermediate plate 2 that rises；Both sides
Small axle 8 on connecting plate 4 is installed, the connecting plate 4 of both sides be hingedly connected to rise the head both sides of shell intermediate plate 2 small axle 8 and the both sides of steel bushing 6
Small axle 8 between.
Fig. 5 a, Fig. 5 b show to rise the structure that shell intermediate plate and Ω shape support frames are fixed with one.
The support connected with the small axle 8 in inner face both sides of its head, afterbody of shell intermediate plate 2 that rise is Ω shapes support frame 5.Ω shapes are supported
The expansion shape of frame 5 is circular arc shaped curvature point in the middle of it, there is small axle 8 both sides, in " Ω " shape as spindle；Two Ω shape branch
The arch section of support 5 and the arc-shaped medial surface at the front portion of shell intermediate plate 2 of rising, rear portion are welding as one respectively.Two Ω shapes support frames 5
The small axle 8 of both sides, that is, the shell intermediate plate 2 that rises is anterior, the small axle 8 of rear portion both sides.
Fig. 4 a show to rise the two of shell anchor head rise shell 2 non-spreading of intermediate plate when cross section state.
Fig. 4 b show to rise the two of shell anchor head rise shell 2 spreading of intermediate plate when cross section state.
Circlip groove is equipped with the small axle 8 of Ω shapes support frame 5, steel screw bushing 3 and the both sides of steel bushing 6, in the outside of connecting plate 4
C, for installing back-up ring 7, to prevent connecting plate 4 from departing from small axle 8.
Fig. 6 a, Fig. 6 b show the structure of steel screw bushing 3.Steel screw bushing 3 is cylindrical shape, and there is small axle 8 both sides, has spiral shell in it
Line.
Fig. 7 a, Fig. 7 b show the structure of steel bushing 6.Steel bushing 6 is cylindrical shape, and there is small axle 8 both sides.
Fig. 8 shows the structure of the screw thread body of rod 1.The afterbody one end of the screw thread body of rod 1 is diagram left end, is thread segment L；Its head is
Right-hand member termination is illustrated, is the head T that diameter is more than the body of rod；It is light bar segment G between its thread segment L and head T.Generally, anchor pole bar
Body or anchor cable installation when be dextrorotation, so, it is illustrated that the tailing screw flight of the screw thread body of rod 1 be left hand thread, with anchor rod body or
Anchor cable it is oppositely oriented.
Fig. 7 c show a kind of structure of connecting plate 4.Its left end is that wide, right-hand member is narrow.With left and right wide connecting plate, it is and conventional
The carrier bar of chain can use.
Fig. 3 show anchor shaft anchor cable rise shell anchor head spreading when state.
Originally rise end anchor member of the shell anchor head as anchor pole or anchor cable, its tail end of screw thread body of rod 1 and anchor rod body or anchor cable rope
The head of body connects firmly one.Connect firmly using modes such as welding, thread connections.The thread segment L of the afterbody of the screw thread body of rod 1 thread rotary orientation
It is oppositely oriented when being installed with anchor pole or anchor cable, and the head T of its front end is contacted with the front end face of steel bushing 6.When anchor rod body or
When anchor cable is installed, the screw thread body of rod 1 will be driven to rotate and promote steel screw bushing 3 to move forward, while making head T promote after steel bushing 6
Move, promoted by the joint of forward and backward connecting plate 4, make the two forward and backward two ends spreadings simultaneously for rising by shell intermediate plate 2.
The front end of the screw thread body of rod 1 is more delayed than the front position for the shell intermediate plate 2 that rises, and to make to rise, hole is blocked in the front end of shell intermediate plate 2
Bottom, the shell intermediate plate 2 that prevents from rising only is rotated without spreading with the screw thread body of rod 1.
Embodiment 2：
The utility model anchor shaft anchor cable another structure for the shell anchor head that rises, is by the shell intermediate plate 2 that rises, the double thread body of rod
10th, steel screw bushing 3, connecting plate 4, Ω shapes support frame 5 and forward screw thread steel bushing 10 etc. are constituted.It is essentially identical with example 1.Difference
It is the double thread body of rod 9 and forward screw thread steel bushing 10.
Fig. 9 shows the structure of the double thread body of rod 9, and forward screw thread steel bushing 10 installation site.
The double thread body of rod 9 is the screw thread body of rod that afterbody is thread segment L, head is forward screw thread section L '.Double thread bar
Assembling forward screw thread steel bushing 10 on steel screw bushing 3, forward screw thread section L ' is assembled on the thread segment L of body 9.Forward screw thread steel bushing 10 is
Cylindrical shape, the rotation direction of its internal thread and thread segment L it is oppositely oriented, be forward screw thread.There is small axle the both sides of forward screw thread steel bushing 10
8, the connecting plate 4 being equipped with connecting plate 4, the small axle 8 in both sides on small axle 8 be hingedly connected to rise the head both sides of shell intermediate plate 2 small axle 8 with it is positive
Between the small axle 8 of the both sides of steel screw bushing 10.Connecting plate 4 on the small axle 8 in the both sides of steel screw bushing 3 is hingedly connected to the afterbody of shell intermediate plate 2 that rises
Between the small axle 8 of both sides and the small axle 8 of the both sides of steel screw bushing 3.
The small axle 8 of the head both sides of shell intermediate plate 2 of rising is the Ω shape branch being welding as one with the head arc-shaped medial surface of shell intermediate plate 2 that rises
The small axle 8 of the both sides of support 5.The small axle 8 for the two sides of tail of shell intermediate plate 2 that rises is to be welded with the afterbody arc-shaped medial surface of shell intermediate plate 2 that rises as one
The small axle 8 of the both sides of Ω shapes support frame 5 of body.
The head of the tail end of the double thread body of rod 9 and anchor rod body or anchor cable connects firmly one by welding.Double thread
It is oppositely oriented when the thread segment L of the afterbody of the body of rod 9 thread rotary orientation is installed with anchor pole or anchor cable, and the forward screw thread on its head section
Rotation direction when L ' thread rotary orientation is installed with anchor rod body or anchor cable is identical.When anchor rod body or anchor cable are installed,
The double thread body of rod 9 will be driven to rotate and promote steel screw bushing 3 to move forward, moved after forward screw thread steel bushing 10, and pass through front and rear connecting plate 4
Joint is promoted, and is made two forward and backward two ends spreading, and the hole wall squeezed tights simultaneously for rising by shell intermediate plate 2, is formed anchor force, reach end anchor
Purpose.The front end of the double thread body of rod 9 is more delayed than the front position for the shell intermediate plate 2 that rises, and to make to rise, the front end of shell intermediate plate 2 is blocked
Bottom hole.
Anchor pole or anchor cable will bear huge active force in the course of the work, it is desirable to which the component for the shell anchor head that rises has high-strength
Degree, especially connecting plate, small axle, steel screw bushing, steel bushing etc..
Other embodiment：
1. the support that the Ω shapes support frame of this example can also take other form, such as：Propped up with the riser of bottom belt crimp
Frame, bottom crimp is welded on the outside of the inner face both sides of shell intermediate plate 2 of rising, riser small axle 8 of burn-oning.
2. preventing connecting plate from departing from small axle mode, except using back-up ring, other methods can be also used, such as：Increased using packing ring
Mouthful pin, by the method such as the outer diameter riveting of small axle is thick.
3. the medial surface for the shell intermediate plate 2 that rises is arc surface, the internal diameter of its medial surface front end is small, rear end internal diameter is big, makes the shell that rises
After intermediate plate spreading, the external diameter of shell front end of rising it is bigger than the external diameter of rear end, improve anchoring effect.Can also be by making shell anchor head front end of rising
Connecting plate it is longer than the connecting plate of rear end, or, screw thread spiral shell of the thread pitch than tail end for the shell anchor head double thread body of rod head end that makes to rise
Away from big, reach after the shell intermediate plate spreading that rises, the external diameter of shell front end of rising is bigger than the external diameter of its rear end, improve the purpose of anchoring effect.
Claims (5)
1. a kind of anchor shaft anchor cable shell anchor head that rises, including constitute the two panels of the shell that rises and rise shell intermediate plate, it is characterised in that：Described two are risen
There is a screw thread body of rod centre of shell intermediate plate (2)；The screw thread body of rod is that afterbody is light bar segment (G), head for thread segment (L), its head
There is the screw thread body of rod (1) of head (T) termination；The screw thread of the thread segment (L) of the screw thread body of rod (1) is reverse thread, is equipped with thereon
Steel screw bushing (3)；Head (T) diameter is more than the body of rod；Steel bushing (6), the front end face and bar of steel bushing (6) are equipped with light bar segment (G)
Head (T) interior side contacts；Steel screw bushing (3) is cylindrical shape, has internal thread, and both sides, which have, is equipped with connecting plate on small axle (8), small axle (8)
(4)；Steel bushing (6) is cylindrical shape, and both sides, which have, is equipped with connecting plate (4) on small axle (8), small axle (8)；Rise the inner face of shell intermediate plate (2) afterbody
Respectively there is a small axle (8) both sides, and small axle (8) is connected by support and the shell intermediate plate (2) that rises；Connecting plate is housed on the small axle (8) of both sides
(4), the connecting plate (4) of both sides is hingedly connected to rise the small of small axle (8) and steel screw bushing (3) both sides of shell intermediate plate (2) two sides of tail
Between axle (8)；Respectively there is a small axle (8) the rise inner face both sides on shell intermediate plate (2) head, and small axle (8) passes through support and the shell intermediate plate (2) that rises
It is connected；Connecting plate (4) is installed, the connecting plate (4) of both sides is hingedly connected to shell intermediate plate (2) head both sides of rising on the small axle (8) of both sides
Small axle (8) and steel bushing (6) both sides small axle (8) between；Or, the described screw thread body of rod is that afterbody is thread segment (L), its head
Portion is the double thread body of rod (9) of forward screw thread section (L ')；Screw-thread steel is equipped with the thread segment (L) of the double thread body of rod (9)
Cover (3), forward screw thread steel bushing (10) is equipped with forward screw thread section (L ')；Forward screw thread steel bushing (10) is cylindrical shape, its interior spiral shell
The rotation direction of line and thread segment (L) on the contrary, its both sides has is equipped with small axle (8), small axle (8) on connecting plate (4), the small axle in both sides (8)
Connecting plate (4) be hingedly connected to rise the small axle (8) of shell intermediate plate (2) head both sides and the small axle of forward screw thread steel bushing (10) both sides
(8) between；Connecting plate (4) on the small axle in steel screw bushing (3) both sides (8) is hingedly connected to rise the small axle of shell intermediate plate (2) two sides of tail
(8) between the small axle (8) of steel screw bushing (3) both sides；The front end ratio of the screw thread body of rod rises the position lag of shell intermediate plate (2) front end；
The head of screw thread body of rod tail end and anchor rod body or anchor cable connects firmly one；The thread rotary orientation and anchor rod body of thread segment (L)
Or it is oppositely oriented during anchor cable installation；When anchor rod body or anchor cable are installed, the screw thread body of rod will be driven to rotate and push away
Dynamic steel screw bushing (3) reach, steel bushing (6) or forward screw thread steel bushing (10) are moved afterwards, and two rise shell intermediate plate (2) spreading.
2. the anchor shaft anchor cable according to claim 1 shell anchor head that rises, it is characterised in that：Described the interior of shell intermediate plate (2) that rise
Side is arc-shaped；Described support is Ω shapes support frame (5), and the centre of Ω shapes support frame (5) is circular arc shaped curvature point, two
There is small axle (8) side, in " Ω " shape；The arch section of two Ω shapes support frames (5) and rise shell intermediate plate (2) front portion, the circular arc at rear portion
Shape medial surface is welding as one respectively.
3. the anchor shaft anchor cable according to claim 2 shell anchor head that rises, it is characterised in that：On the inside of the described shell intermediate plate (2) that rises
The arc surface in face, the internal diameter of front end is small, rear end internal diameter is big；Rise after shell intermediate plate spreading, the external diameter for shell front end of rising is outer than rear end
Footpath is big.
4. the anchor shaft anchor cable according to claim 1 shell anchor head that rises, it is characterised in that：The connecting plate of the described shell anchor head that rises
(4), the length of front end connecting plate is bigger than the length of rear end connecting plate；Rise after shell intermediate plate spreading, the external diameter for shell front end of rising is outer than rear end
Footpath is big.
5. the anchor shaft anchor cable according to claim 1 shell anchor head that rises, it is characterised in that：The double end spiral shell of the described shell anchor head that rises
The thread pitch of rasp bar body (9) head end is bigger than the thread pitch of tail end；Rise after shell intermediate plate spreading, the external diameter for shell front end of rising compares rear end
External diameter it is big.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621239449.4U CN206346766U (en) | 2016-11-20 | 2016-11-20 | The anchor shaft anchor cable shell anchor head that rises |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621239449.4U CN206346766U (en) | 2016-11-20 | 2016-11-20 | The anchor shaft anchor cable shell anchor head that rises |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206346766U true CN206346766U (en) | 2017-07-21 |
Family
ID=59318136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621239449.4U Withdrawn - After Issue CN206346766U (en) | 2016-11-20 | 2016-11-20 | The anchor shaft anchor cable shell anchor head that rises |
Country Status (1)
| Country | Link |
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| CN (1) | CN206346766U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321127A (en) * | 2016-11-20 | 2017-01-11 | 中国平煤神马能源化工集团有限责任公司 | Expansion shell anchor head for anchor rod and rope |
-
2016
- 2016-11-20 CN CN201621239449.4U patent/CN206346766U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321127A (en) * | 2016-11-20 | 2017-01-11 | 中国平煤神马能源化工集团有限责任公司 | Expansion shell anchor head for anchor rod and rope |
| CN106321127B (en) * | 2016-11-20 | 2019-06-28 | 中国平煤神马能源化工集团有限责任公司 | The anchor shaft anchor cable shell anchor head that rises |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170721 Effective date of abandoning: 20190628 |