CN113565265A - High-strength prestressed anchorage device for building construction - Google Patents
High-strength prestressed anchorage device for building construction Download PDFInfo
- Publication number
- CN113565265A CN113565265A CN202110857161.2A CN202110857161A CN113565265A CN 113565265 A CN113565265 A CN 113565265A CN 202110857161 A CN202110857161 A CN 202110857161A CN 113565265 A CN113565265 A CN 113565265A
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- CN
- China
- Prior art keywords
- anchorage device
- rotating shaft
- belt pulley
- anchor
- hole
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
Abstract
The invention relates to the technical field of anchorage devices for building construction, in particular to a high-strength prestressed anchorage device for building construction; the high-strength prestressed anchor for building construction is characterized in that a left anchor, a middle anchor and a right anchor are fixedly combined to form a complete anchor through matching of bolts and nuts, the complete anchor is easy to install and disassemble, an internal thread hole of the middle anchor is screwed with a rust removal component, a second threaded column moves downwards by rotating a rotating handle and simultaneously drives a driving shaft and a main belt pulley to rotate, a first rotating shaft, a second rotating shaft, a third rotating shaft, a fourth rotating shaft, a corresponding grinding wheel I, a grinding wheel II, a grinding wheel III and a grinding wheel IV move downwards and rotate simultaneously to treat and remove iron rust on the inner side wall of a circular through hole, prestressed ribs are conveniently inserted into corresponding circular through holes, and an arc clamping piece is driven to clamp and fix the prestressed ribs by rotating the first threaded column through a rectangular rotating rod.
Description
Technical Field
The invention relates to the technical field of anchors for building construction, in particular to a high-strength pre-stressed anchor for building construction.
Background
The anchorage device is a permanent anchorage device used in prestressed concrete, and is an anchorage tool, also called a prestressed anchorage device, used in a post-tensioning structure or component for maintaining the tensile force of a prestressed tendon and transmitting the tensile force to the interior of the concrete.
Along with the rapid development of scientific technology, the ground tackle for the prestressed tendon of high strength has also obtained technical improvement, however some ground tackle now have before the construction inconvenient to press from both sides tight and press from both sides tight not good problem of effect tightly to the prestressed tendon, inconvenient to carry out the rust cleaning treatment to ground tackle through-hole internal surface, and then influence the prestressed tendon and pass the through-hole of ground tackle, the ground tackle is difficult simultaneously to carry out free dismouting, leads to moving back that the anchor work is comparatively difficult loaded down with trivial details, be not convenient for construction constructor uses the prestressed anchorage utensil to carry out the construction operation.
Disclosure of Invention
Aiming at the problems, the invention provides a high-strength prestressed anchorage device for building construction.
In order to achieve the above object, the present invention adopts the following technical solutions:
a high-strength prestressed anchorage device for building construction comprises a left anchorage device, a middle anchorage device, a right anchorage device and a bolt; a first through groove is formed in the right part of the left anchorage device, first mounting seats are symmetrically connected to the right sides of the upper end and the lower end of the left anchorage device, and a first through hole is formed in each mounting seat;
the middle part of the middle anchor is provided with an internal thread hole, the internal thread hole is screwed with a rust removal assembly, and the outer end of the middle anchor is annularly provided with a semicircular groove; a second through groove is formed in the left part of the right anchorage device, a second mounting seat is symmetrically connected to the right sides of the upper end and the lower end of the right anchorage device, and a second through hole is formed in the second mounting seat;
and the bolt sequentially and transversely penetrates through the second through hole and the first through hole and is matched with the nut to fixedly combine the left anchorage device, the middle anchorage device and the right anchorage device to form a complete anchorage device, and the rear ends of the left anchorage device and the right anchorage device are symmetrically provided with clamping structures.
Preferably, logical groove, semicircle groove and No. two logical groove combinations form circular through-hole, and circular through-hole quantity is 4, and circular through-hole is whole to be quadrangle distribution.
Preferably, the right end of the bolt is connected with a holding ring, and the inner end of the holding ring is provided with an anti-slip pad.
Preferably, the clamping structure comprises a half frame, a first threaded column, a connecting block, a groove and an arc-shaped clamping piece; the half frames are respectively and correspondingly fixedly connected with the rear ends of the left anchorage device and the right anchorage device, the left half frame and the right half frame are combined to form a whole frame, and the half frames are correspondingly screwed with a first threaded column; one end of the first threaded column penetrates through the half frame and is rotatably connected with the groove, the groove is correspondingly arranged at one end of the connecting block, and the other end of the connecting block is fixedly connected with the arc-shaped clamping piece.
Preferably, the arc-shaped clamping pieces are symmetrically provided with two arc-shaped clamping pieces, and the inner sides of the arc-shaped clamping pieces are provided with sawtooth-shaped stripes.
Preferably, one end of the first threaded column, which is far away from the arc-shaped clamping piece, is provided with a rectangular groove, and the depth of the rectangular groove is 2 cm.
Preferably, the rust removing assembly comprises a driving shaft, a main belt pulley is mounted on the driving shaft, a second threaded column is connected to the lower end of the driving shaft, the driving shaft is rotatably connected with a cross, and the top end of the driving shaft is connected with a rotating handle; the driving shaft is used for driving and connecting the first belt pulley, the second belt pulley, the third belt pulley and the fourth belt pulley together through the conveying belt; the first belt pulley is arranged on the first rotating shaft, the lower end of the first rotating shaft is connected with the first grinding wheel, and the upper end of the first rotating shaft is rotatably connected with the rectangular frame; the second belt pulley is arranged on the second rotating shaft, the lower end of the second rotating shaft is connected with the second grinding wheel, and the upper end of the second rotating shaft is rotatably connected with the rectangular frame; the third belt pulley is arranged on the third rotating shaft, the lower end of the third rotating shaft is connected with a third grinding wheel, and the upper end of the third rotating shaft is rotatably connected with the rectangular frame; the fourth belt pulley is arranged on the fourth rotating shaft, the lower end of the fourth rotating shaft is connected with a grinding wheel IV, and the upper end of the fourth rotating shaft is rotatably connected with the rectangular frame; the inner end of the rectangular frame is connected with the outer end of the cross.
Preferably, the surface of the rotating handle is provided with transverse anti-slip lines, and the depth of the transverse anti-slip lines is 0.6 cm.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
the high-strength prestressed anchor for building construction is characterized in that a left anchor, a middle anchor and a right anchor are fixedly combined to form a complete anchor through matching of bolts and nuts, the complete anchor is easy to install and disassemble, an internal thread hole of the middle anchor is screwed with a rust removal component, a second threaded column moves downwards by rotating a rotating handle and simultaneously drives a driving shaft and a main belt pulley to rotate, a first rotating shaft, a second rotating shaft, a third rotating shaft, a fourth rotating shaft, a corresponding grinding wheel I, a grinding wheel II, a grinding wheel III and a grinding wheel IV move downwards and rotate simultaneously to treat and remove iron rust on the inner side wall of a circular through hole, prestressed ribs are conveniently inserted into corresponding circular through holes, and an arc clamping piece is driven to clamp and fix the prestressed ribs by rotating the first threaded column through a rectangular rotating rod.
Drawings
FIG. 1 is a schematic view of a distributed structure of a high-strength prestressed anchorage device for construction according to the present invention;
FIG. 2 is a view showing an overall combination structure of the high-strength prestressed anchorage device for construction according to the present invention;
FIG. 3 is a schematic structural view of a high-strength prestressed anchorage clamping structure for building construction according to the present invention;
FIG. 4 is a top view of the high-strength pre-stressed anchor rust removing assembly for building construction and a middle anchor in cooperation with each other;
FIG. 5 is a schematic connection diagram of a high-strength prestressed anchorage device rust removal assembly pulley block for building construction;
in the figure: 1-left anchorage, 101-first through groove, 2-right anchorage, 201-second through groove, 3-first installation seat, 4-second installation seat, 5-first through hole, 6-second through hole, 7-middle anchorage, 8-internal thread hole, 9-semicircular groove, 10-bolt, 11-holding ring, 12-nut, 13-half frame, 14-first threaded column, 15-rectangular groove, 16-connecting block, 17-groove, 18-arc clamping piece, 19-first grinding wheel, 20-second grinding wheel, 21-third grinding wheel, 22-fourth grinding wheel, 23-first belt pulley, 24-second belt pulley, 25-third belt pulley, 26-fourth belt pulley, 27-conveying belt, 28-rectangular frame, 29-cross frame, 30-driving shaft, 31-first rotating shaft, 32-second rotating shaft, 33-third rotating shaft, 34-fourth rotating shaft, 35-circular through hole, 36-second threaded column, 37-main belt pulley and 38-rotating handle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
A high-strength prestressed anchorage device for building construction comprises a left anchorage device 1, a middle anchorage device 7, a right anchorage device 2 and a bolt 10; the right part of the left anchorage device 1 is provided with a first through groove 101, the right sides of the upper end and the lower end of the left anchorage device 1 are symmetrically connected with a first mounting seat 3, and a first through hole 5 is formed in the first mounting seat 3;
an internal thread hole 8 is formed in the middle of the middle anchor 7, a rust removal assembly is screwed in the internal thread hole 8, and a semicircular groove 9 is annularly formed in the outer end of the middle anchor 7; a second through groove 201 is formed in the left part of the right anchorage device 2, a second mounting seat 4 is symmetrically connected to the right sides of the upper end and the lower end of the right anchorage device 2, and a second through hole 6 is formed in the second mounting seat 4;
the bolt 10 sequentially and transversely penetrates through the second through hole 6 and the first through hole 5, the left anchorage device 1, the middle anchorage device 7 and the right anchorage device 2 are fixedly combined to form a complete anchorage device by matching with the nut 12, and the rear ends of the left anchorage device 1 and the right anchorage device 2 are symmetrically provided with clamping structures.
A logical groove 101, half slot 9 and No. two logical groove 201 combinations form circular through-hole 35, and circular through-hole 35 quantity is 4, and circular through-hole 35 is whole to be quadrangle distribution, is convenient for insert the circular through-hole 35 that corresponds with the prestressing tendons in.
The right end of the bolt 10 is connected with the holding ring 11, and the inner end of the holding ring 11 is provided with the anti-slip pad, so that a worker can rotate the bolt 10 conveniently, time and labor are saved, and operation is facilitated.
The clamping structure comprises a half frame 13, a first threaded column 14, a connecting block 16, a groove 17 and an arc-shaped clamping piece 18; the half frames 13 are respectively and correspondingly fixedly connected with the rear ends of the left anchor 1 and the right anchor 2, the left half frame 13 and the right half frame 13 are combined to form a whole frame, and the half frames 13 are correspondingly screwed with a first threaded column 14; half frame 13 is passed to 14 one end of screw post No. one to rotate with recess 17 and be connected, recess 17 corresponds the setting in connecting block 16 one end, and the other end rigid coupling of connecting block 16 has arc clamping piece 18, utilizes screw post 14 to rotate and drives connecting block 16 and arc clamping piece 18 and remove, is convenient for carry out the fixed clamp tightly to the prestressing tendons.
The arc-shaped clamping pieces 18 are symmetrically arranged, and the inner sides of the arc-shaped clamping pieces 18 are provided with sawtooth-shaped stripes, so that the arc-shaped clamping pieces 18 can clamp and fix the prestressed tendons more effectively.
One end of the first threaded column 14, which is far away from the arc-shaped clamping piece 18, is provided with a rectangular groove 15, the depth of the rectangular groove 15 is 2cm, the first threaded column 14 can be conveniently rotated by using the rectangular rotating rod, and time and labor are saved.
The derusting assembly comprises a driving shaft 30, a main belt pulley 37 is mounted on the driving shaft 30, a second threaded column 36 is connected to the lower end of the driving shaft 30, the driving shaft 30 is rotatably connected with a cross 29, and the top end of the driving shaft is connected with a rotating handle 38; the driving shaft 30 is used for connecting the first belt pulley 23, the second belt pulley 24, the third belt pulley 25 and the fourth belt pulley 26 together in a transmission way through a transmission belt 27; the first belt pulley 23 is arranged on a first rotating shaft 31, the lower end of the first rotating shaft 31 is connected with a first grinding wheel 19, and the upper end of the first rotating shaft 31 is rotatably connected with the rectangular frame 28; the second belt pulley 24 is arranged on the second rotating shaft 32, the lower end of the second rotating shaft 32 is connected with the second grinding wheel 20, and the upper end of the second rotating shaft is rotatably connected with the rectangular frame 28; the third belt pulley 25 is arranged on a third rotating shaft 33, the lower end of the third rotating shaft 33 is connected with a third grinding wheel 21, and the upper end of the third rotating shaft is rotatably connected with the rectangular frame 28; the fourth belt pulley 26 is arranged on a fourth rotating shaft 34, the lower end of the fourth rotating shaft 34 is connected with a grinding wheel IV 22, and the upper end of the fourth rotating shaft is rotatably connected with the rectangular frame 28; the inner end of the rectangular frame 28 is connected with the outer end of the cross 29, so that the stable work of the rust removing assembly is facilitated.
The surface of the rotating handle 38 is provided with transverse anti-slip grains, and the depth of the transverse anti-slip grains is 0.6cm, so that the friction force between the rotating handle 38 and the hand is increased, and the rotating handle 38 can be conveniently rotated.
The working mode of the high-strength prestressed anchorage device for building construction is as follows:
building constructors fixedly combine the left anchorage 1, the middle anchorage 7 and the right anchorage 2 by matching the bolts 10 and the nuts 12 to form a complete anchorage which is easy to install and disassemble, the internal thread hole 8 of the middle anchorage 7 is screwed with the second threaded column 36 of the derusting component, the second threaded column 36 moves downwards by rotating the rotating handle 38 and the driving shaft 30 and the main belt pulley 37, the first belt pulley 23, the second belt pulley 24, the third belt pulley 25 and the fourth belt pulley 26 rotate under the action of the conveyor belt 27, the corresponding first rotating shaft 31, the second rotating shaft 32, the third rotating shaft 33, the fourth rotating shaft 34 and the corresponding first grinding wheel 19, the second grinding wheel 20, the third grinding wheel 21 and the fourth grinding wheel 22 move downwards and rotate simultaneously, rust on the inner side walls of the four circular through holes 35 is treated and removed, and prestressed tendons are convenient to be inserted into the corresponding circular through holes 35, constructor inserts rectangle recess 15 through utilizing the rectangle bull stick, drives a screw post 14 and rotates, a screw post 14 and half frame 13 threaded connection, and a screw post 14 rotates with the recess 17 of connecting block 16 to be connected simultaneously, and a screw post 14 removes in half frame 13, and then promotes connecting block 16 and arc clamping piece 18 and remove, and two arc clamping pieces 18 cooperate and press from both sides tight fixedly to the prestressing tendons.
Belt pulley, emery wheel, bolt, the nut that this patent adopted are the market, and its structure and control mode are prior art, no longer describe in the description.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A high-strength prestressed anchorage device for building construction comprises a left anchorage device (1), a middle anchorage device (7), a right anchorage device (2) and a bolt (10); the method is characterized in that: a first through groove (101) is formed in the right part of the left anchor (1), first mounting seats (3) are symmetrically connected to the right sides of the upper end and the lower end of the left anchor (1), and first through holes (5) are formed in the first mounting seats (3);
an internal thread hole (8) is formed in the middle of the middle anchor (7), a rust removal assembly is screwed in the internal thread hole (8), and a semicircular groove (9) is annularly formed in the outer end of the middle anchor (7); a second through groove (201) is formed in the left part of the right anchorage device (2), a second mounting seat (4) is symmetrically connected to the right sides of the upper end and the lower end of the right anchorage device (2), and a second through hole (6) is formed in the second mounting seat (4);
the bolt (10) sequentially and transversely penetrates through the through hole II (6) and the through hole I (5), the left anchorage device (1), the middle anchorage device (7) and the right anchorage device (2) are fixedly combined to form a complete anchorage device by matching with the nut (12), and clamping structures are symmetrically arranged at the rear ends of the left anchorage device (1) and the right anchorage device (2).
2. The high-strength prestressed anchorage device for construction according to claim 1, wherein: a logical groove (101), semicircular groove (9) and No. two logical groove (201) combination form circular through-hole (35), circular through-hole (35) quantity is 4, and circular through-hole (35) wholly is the quadrangle and distributes.
3. The high-strength prestressed anchorage device for construction according to claim 1, wherein: the right end of the bolt (10) is connected with a holding ring (11), and an anti-slip pad is arranged at the inner end of the holding ring (11).
4. The high-strength prestressed anchorage device for construction according to claim 1, wherein: the clamping structure comprises a half frame (13), a first threaded column (14), a connecting block (16), a groove (17) and an arc-shaped clamping piece (18); the half frames (13) are respectively and correspondingly fixedly connected with the rear ends of the left anchorage device (1) and the right anchorage device (2), the left half frame and the right half frame (13) are combined to form a whole frame, and the half frames (13) are correspondingly screwed with a first threaded column (14); a screw thread post (14) one end passes half frame (13) to rotate with recess (17) and be connected, recess (17) correspond the setting in connecting block (16) one end, and connecting block (16) other end rigid coupling has arc clamping piece (18).
5. The high-strength prestressed anchorage device for construction according to claim 4, wherein: the arc-shaped clamping pieces (18) are symmetrically arranged, and sawtooth-shaped stripes are arranged on the inner sides of the arc-shaped clamping pieces (18).
6. The high-strength prestressed anchorage device for construction according to claim 1, wherein: one end of the first threaded column (14), which is far away from the arc-shaped clamping piece (18), is provided with a rectangular groove (15), and the depth of the rectangular groove (15) is 2 cm.
7. The high-strength prestressed anchorage device for construction according to claim 1, wherein: the rust removing assembly comprises a driving shaft (30), a main belt pulley (37) is mounted on the driving shaft (30), a second threaded column (36) is connected to the lower end of the driving shaft (30), the driving shaft (30) is rotatably connected with a cross (29), and the top end of the driving shaft is connected with a rotating handle (38); the driving shaft (30) is used for connecting a first belt pulley (23), a second belt pulley (24), a third belt pulley (25) and a fourth belt pulley (26) together in a transmission way through a transmission belt (27); the first belt pulley (23) is installed on a first rotating shaft (31), the lower end of the first rotating shaft (31) is connected with a first grinding wheel (19), and the upper end of the first rotating shaft is rotatably connected with the rectangular frame (28); the second belt pulley (24) is arranged on a second rotating shaft (32), the lower end of the second rotating shaft (32) is connected with a second grinding wheel (20), and the upper end of the second rotating shaft is rotatably connected with the rectangular frame (28); the third belt pulley (25) is arranged on a third rotating shaft (33), the lower end of the third rotating shaft (33) is connected with a third grinding wheel (21), and the upper end of the third rotating shaft is rotatably connected with the rectangular frame (28); the fourth belt pulley (26) is arranged on a fourth rotating shaft (34), the lower end of the fourth rotating shaft (34) is connected with a grinding wheel IV (22), and the upper end of the fourth rotating shaft is rotatably connected with the rectangular frame (28); the inner end of the rectangular frame (28) is connected with the outer end of the cross (29).
8. The high-strength prestressed anchorage device for construction according to claim 6, wherein: the surface of the rotating handle (38) is provided with transverse anti-slip grains, and the depth of the transverse anti-slip grains is 0.6 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110857161.2A CN113565265A (en) | 2021-07-28 | 2021-07-28 | High-strength prestressed anchorage device for building construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110857161.2A CN113565265A (en) | 2021-07-28 | 2021-07-28 | High-strength prestressed anchorage device for building construction |
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| Publication Number | Publication Date |
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| CN113565265A true CN113565265A (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110857161.2A Pending CN113565265A (en) | 2021-07-28 | 2021-07-28 | High-strength prestressed anchorage device for building construction |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4560424A (en) * | 1983-07-06 | 1985-12-24 | G.T.M.-Entrepose | Process for forming a prestress anchorage by drawing a steel sleeve over a metal core |
| CN201317998Y (en) * | 2008-12-04 | 2009-09-30 | 北京市建筑工程研究院 | Double-hole split embedded type anchorage device |
| CN107503472A (en) * | 2017-09-26 | 2017-12-22 | 中国十七冶集团有限公司 | A kind of combination type prestressed anchorage |
| CN208380110U (en) * | 2018-06-14 | 2019-01-15 | 金中天城市建设有限公司 | A kind of use for tendon anchorage of high intensity |
| CN210395861U (en) * | 2019-05-14 | 2020-04-24 | 中建一局华江建设有限公司 | Opening anchorage device for cutting off and anchoring prestressed tendon |
| CN213741915U (en) * | 2020-10-28 | 2021-07-20 | 湖北宜昌攀科预应力技术服务有限公司 | Split type prestressed anchorage utensil |
-
2021
- 2021-07-28 CN CN202110857161.2A patent/CN113565265A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4560424A (en) * | 1983-07-06 | 1985-12-24 | G.T.M.-Entrepose | Process for forming a prestress anchorage by drawing a steel sleeve over a metal core |
| CN201317998Y (en) * | 2008-12-04 | 2009-09-30 | 北京市建筑工程研究院 | Double-hole split embedded type anchorage device |
| CN107503472A (en) * | 2017-09-26 | 2017-12-22 | 中国十七冶集团有限公司 | A kind of combination type prestressed anchorage |
| CN208380110U (en) * | 2018-06-14 | 2019-01-15 | 金中天城市建设有限公司 | A kind of use for tendon anchorage of high intensity |
| CN210395861U (en) * | 2019-05-14 | 2020-04-24 | 中建一局华江建设有限公司 | Opening anchorage device for cutting off and anchoring prestressed tendon |
| CN213741915U (en) * | 2020-10-28 | 2021-07-20 | 湖北宜昌攀科预应力技术服务有限公司 | Split type prestressed anchorage utensil |
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Application publication date: 20211029 |
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| RJ01 | Rejection of invention patent application after publication |