CN113897863B - Use method of combined prestress anchorage device - Google Patents
Use method of combined prestress anchorage device Download PDFInfo
- Publication number
- CN113897863B CN113897863B CN202111039038.6A CN202111039038A CN113897863B CN 113897863 B CN113897863 B CN 113897863B CN 202111039038 A CN202111039038 A CN 202111039038A CN 113897863 B CN113897863 B CN 113897863B
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- fixedly connected
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- prestress
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 53
- 239000010959 steel Substances 0.000 claims description 53
- 238000013459 approach Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention relates to the technical field of air detection and monitoring, in particular to a use method of a combined type prestress anchorage device, which comprises a shell, wherein a supporting rod is fixedly connected to the lower part of the inner side wall of the shell, a corrugated pipe is fixedly connected to the lower end of the supporting rod, a threaded rib is fixedly connected to the lower end of the shell, a round hole is formed in the top of the shell, a threaded cylinder is slidably connected to the inner side wall of the round hole, a clamping piece is movably connected to the upper end of the threaded cylinder, a sleeve is connected to the outer side of the threaded cylinder in a threaded manner, cavities are formed in the left side and the right side of the inner part of the threaded cylinder, a limiting rod is fixedly connected to the lower end of the inner part of the cavity, and after the clamping piece enters the inner part of the threaded cylinder, the threaded cylinder is driven to move upwards by rotating the sleeve, so that prestress lost by moving inwards when the clamping piece is recovered can be recovered, the preset ideal prestress can be achieved as much as possible, and the possibility of damage of a later building due to the fact that the prestress does not reach the standard is avoided as much as possible.
Description
Technical Field
The invention relates to the technical field of air detection and monitoring, in particular to a use method of a combined type prestress anchorage device.
Background
The prestress anchorage device is commonly used in bridge construction, is pre-installed and positioned, then is poured with concrete, and is buried at two ends of the concrete, namely two ends of a corrugated pipe, and is an end face arranged for stabilizing a jack during tensioning.
The utility model provides a prestress anchor device of the prior patent (bulletin number: CN 212026860U). The prestress anchorage comprises a backing plate; the steel strands penetrate through the backing plate, and are linearly distributed on the backing plate; the plurality of extrusion anchors are arranged on one side of the backing plate, and the plurality of steel strands respectively penetrate through the plurality of extrusion anchors; the corrugated pipe is positioned at one side of the backing plate far away from the extrusion anchor, and the corrugated pipe is sleeved at the outer sides of the plurality of steel strands; the grouting pipe is arranged on the corrugated pipe; the thread ribs are sleeved on the outer sides of the corrugated pipe and the plurality of steel strands; and the guide mechanisms are respectively arranged on one side of the backing plate away from the extrusion anchor. The prestress anchor provided by the utility model has the advantages of convenience in use, repeated utilization and convenience in installation of the steel strand.
In the case, the anchor device can be more convenient to use, but still has some problems, the existing anchor device is various, a porous clamping piece die is provided, when the anchor device is stretched and strong, the clamping piece is contracted towards the inside of a round hole, a steel strand is recycled, so that certain errors exist between the anchor device and the calculated prestress, the quality of the hydraulic concrete does not reach the standard, and the building has certain risk in the later period:
For this purpose, a method for using a combined prestressed anchorage device is proposed.
Disclosure of Invention
The invention aims to provide a use method of a combined type prestress anchorage device, which is characterized in that after a clamping piece enters the inside of a threaded cylinder, the threaded cylinder is driven to move upwards by a rotary sleeve, so that prestress lost by the movement of the clamping piece to the inside can be complemented back, the prestress can reach ideal strength as much as possible, the stability of concrete is improved, and the problems in the background technology are solved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a use method of combination formula prestressing force ground tackle, includes the shell, the inside wall lower part fixedly connected with bracing piece of shell, the lower extreme fixedly connected with bellows of bracing piece, the lower extreme fixedly connected with screw thread muscle of shell, the round hole has been seted up at the top of shell, the inside wall sliding connection of round hole has a screw thread drum, the upper end swing joint of screw thread drum has the clamping piece, the outside threaded connection of screw thread drum has the sleeve, the cavity has all been seted up to the inside left and right sides of screw thread drum, the inside of shell is located the inside lower extreme fixedly connected with gag lever post of cavity.
During operation, the steel strand passes through the inside of bellows, rethread screw thread drum stretches out the steel strand, carry out the increase of prestressing force with chest expander such as jack this moment, when reaching the prestressing force of this building, instrument such as chest expander loosen the steel strand, the steel strand drives the clamping piece and retrieves this moment, steel strand and clamping piece get into the inside of screw thread drum, there is certain prestressing force loss, at this moment rotate the sleeve, screw thread drum rises when the sleeve rotates, can drive screw thread drum rotation when the sleeve rotates, because the gag lever post of design, the direction of rotation has been restricted, so the rotation of screw thread drum has been avoided, because screw thread drum drives the steel strand when shifting up and shifts.
Preferably, the inside lower extreme of shell is located threaded cylinder left and right sides and all sets up flutedly, the inside fixedly connected with first spring of recess, one side fixedly connected with horizontal pole that is close to threaded sleeve of first spring, the right side fixedly connected with semicircular bearing block of horizontal pole, semicircular bearing block is in order and contacts.
When the threaded cylinder moves upwards, a gap is formed in the bottom, at the moment, a first spring in the groove pushes the cross rod, the cross rod pushes the semicircular bearing blocks, and the gap can be filled through the semicircular bearing blocks by designing a plurality of semicircular bearing blocks.
Preferably, the upper ends of two sides of the inside of the sleeve are provided with sliding grooves, the inside of the sliding grooves is fixedly connected with a second spring, and one side, close to the threaded cylinder, of the second spring is fixedly connected with a baffle rod.
When the clamping piece is installed, the clamping piece is conical, so that when the clamping piece approaches the threaded cylinder, the two baffle rods are extruded to move to the left side and the right side of the threaded sleeve, the two baffle rods extrude the second spring, and when the clamping piece passes over the baffle rods, the second spring resets at the moment, and the second spring resets the baffle rods at the moment.
Preferably, the inner walls of the two sides of the threaded cylinder are fixedly connected with connecting rods, and the lower ends of the connecting rods are rotationally connected with triangular blocks.
When the threaded cylinder moves upwards, the connecting rod is driven to move upwards, the movable triangular block on the connecting rod moves upwards, and the movable triangular block is triangular, so that when the movable triangular block enters the inside of the round hole, the bottom section of the threaded cylinder can shrink.
Preferably, the left side and the right side of the sleeve are both in threaded connection with threaded rods, and one side of each threaded rod, which is close to the threaded cylinder, is rotationally connected with a semicircular clamping block.
When the steel strand wires are fixed, rotate two threaded rods this moment, two threaded rods move inwards, and two threaded rods drive semicircle fixture blocks to move inwards.
Preferably, the inner side wall of the semicircular clamping block is provided with a circular groove.
The friction force between the semicircular clamping block and the steel twisted wire can be increased, and the fixing performance is further improved.
Compared with the prior art, the invention has the beneficial effects that:
1. After the clamping piece enters the threaded cylinder, the threaded cylinder is driven to move upwards by the rotary sleeve, so that the prestress lost by the movement of the clamping piece to the inside can be complemented back, the prestress can reach ideal strength as much as possible, and the stability of concrete is improved;
2. through the design of the baffle rod, after the clamping piece is installed, the steel twisted wire cannot be moved outwards, so that the device is more convenient to use.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of a front view of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;
FIG. 4 is an enlarged schematic view of the structure of FIG. 3B according to the present invention;
fig. 5 is a structural view of a semicircular clamping block according to the present invention.
In the figure: 1. a housing; 2. a support rod; 3. a thread rib; 4. a round hole; 5. a threaded cylinder; 6. a clamping piece; 7. a sleeve; 8. a cavity; 9. a limit rod; 10. a first spring; 11. a semicircular bearing block; 12. a chute; 13. a second spring; 14. a gear lever; 15. a threaded rod; 16. a semicircular clamping block; 17. a connecting rod; 18. triangular blocks; 19. a circular groove; 20. a bellows; 21. a groove; 22. a cross bar.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, the present invention provides a technical solution:
The use method of the combined prestress anchorage device is shown in fig. 1 to 3, and comprises a shell 1, wherein the lower part of the inner side wall of the shell 1 is fixedly connected with a supporting rod 2, the lower end of the supporting rod 2 is fixedly connected with a corrugated pipe 20, the lower end of the shell 1 is fixedly connected with a threaded rib 3, the top of the shell 1 is provided with a round hole 4, the inner side wall of the round hole 4 is slidably connected with a threaded cylinder 5, the upper end of the threaded cylinder 5 is movably connected with a clamping piece 6, the outer side of the threaded cylinder 5 is in threaded connection with a sleeve 7, the left side and the right side of the interior of the threaded cylinder 5 are provided with cavities 8, and the lower end of the interior of the shell 1, which is positioned in the cavities 8, is fixedly connected with a limit rod 9;
When the steel strand is pulled to a certain value, the steel strand drives the clamping piece 6 to be recovered, the prestress is reduced, and the tensile force is increased when the steel strand is pulled, so that the elastic coefficient of the steel strand can be exceeded, and the steel strand is damaged;
During operation, the steel strand passes through the inside of the corrugated pipe 20 and then is stretched out by the threaded cylinder 5, at the moment, the steel strand is increased by using a chest expander such as a jack, when the prestress of the building is achieved, tools such as the chest expander loosen the steel strand, at the moment, the steel strand drives the clamping piece 6 to be recovered, the steel strand and the clamping piece 6 enter the inside of the threaded cylinder 5, certain prestress loss exists, at the moment, the sleeve 7 is rotated, the threaded cylinder 5 rises when the sleeve 7 rotates, the threaded cylinder 5 is driven to rotate when the sleeve 7 rotates, the rotation direction is limited because of the designed limiting rod 9, the rotation of the threaded cylinder 5 is avoided, and because the threaded cylinder 5 is driven to move upwards when moving upwards, the lost prestress can be pulled back secondarily, the prestress loss is effectively reduced, and the quality of concrete is improved.
As an embodiment of the present invention, as shown in fig. 1 to 4, grooves 21 are formed at the lower end of the inside of the housing 1 and located at the left and right sides of the threaded cylinder 5, a first spring 10 is fixedly connected to the inside of the grooves 21, a cross bar 22 is fixedly connected to one side of the first spring 10, which is close to the threaded cylinder 5, a semicircular bearing block 11 is fixedly connected to the right side of the cross bar 22, and the semicircular bearing blocks 11 are sequentially contacted;
During operation, when the threaded cylinder 5 moves upwards, the bottom is provided with a gap, at the moment, the first spring 10 in the groove 21 pushes the cross rod 22, the cross rod 22 pushes the semicircular bearing blocks 11, and a plurality of semicircular bearing blocks 11 are designed, so that gaps can be filled in the gaps through the semicircular bearing blocks 11, the situation that the lower surface is provided with the gap when the threaded cylinder 5 moves upwards is avoided, the threaded cylinder 5 is in a suspended state, the threaded cylinder 5 is unstable when being pulled by a steel strand, and the stability of the device is further improved.
As an embodiment of the present invention, as shown in fig. 1 to 3, the upper ends of two sides of the inside of the sleeve 7 are both provided with a chute 12, a second spring 13 is fixedly connected to the inside of the chute 12, and a stop lever 14 is fixedly connected to one side of the second spring 13, which is close to the threaded cylinder 5;
when the steel twisted wire is pulled after the clamping piece 6 is fixed, the clamping piece 6 can be driven by the steel twisted wire to move outwards, and the clamping piece 6 needs to be pushed manually and additionally, so that the complexity of the working procedure is increased;
During operation, when the clamping piece 6 is installed, because the clamping piece 6 is conical, when the clamping piece 6 approaches the threaded cylinder 5, the two baffle rods 14 are extruded to move towards the left side and the right side of the threaded sleeve 5, the two baffle rods 14 extrude the second spring 13, when the clamping piece 6 passes over the baffle rods 14, the second spring 13 resets at the moment, and the second spring 13 resets the baffle rods 14, so that when the steel strand pulling force is carried out, the device does not need to be reset manually, and the device can be used more simply.
As an embodiment of the present invention, as shown in fig. 3 and 5, the inner walls of both sides of the threaded cylinder 5 are fixedly connected with a connecting rod 17, and the lower end of the connecting rod 17 is rotatably connected with a triangle block 18;
When the screw thread cylinder 5 moves upwards, the connecting rod 17 is driven to move upwards at the moment, the connecting rod 17 moves upwards to drive the triangular block 18 to move upwards, and the triangular block 18 is in triangular design, so that when the triangular block 18 enters the round hole 4, the bottom section of the screw thread cylinder 5 can shrink, and the effect of fixing the steel stranded wires is further achieved.
As an embodiment of the present invention, as shown in fig. 1,2, 3 and 5, threaded rods 15 are screwed on both the left and right sides of the sleeve 7, one side of the threaded rod 15, which is close to the threaded cylinder 5, is rotatably connected with a semicircular clamping block 16, and a circular groove 19 is formed in the inner side wall of the semicircular clamping block 16;
When the steel strand is fixed during operation, the two threaded rods 15 are rotated at the moment, the two threaded rods 15 move towards the inside of the sleeve 7, and the two threaded rods 15 drive the semicircular clamping blocks 16 to move towards the surface of the steel strand, so that the steel strand is fixed, and the fixation of the steel strand can be further enhanced.
Working principle:
When the steel strand is in operation, the steel strand passes through the inside of the corrugated pipe 20 and then is stretched out by the threaded cylinder 5, at the moment, the prestress is increased by using a chest expander such as a jack, when the prestress of the building is achieved, tools such as the chest expander, etc. loosen the steel strand, at the moment, the steel strand drives the clamping piece 6 to be recovered, the steel strand and the clamping piece 6 enter the inside of the threaded cylinder 5, a certain prestress loss exists, at the moment, the sleeve 7 is rotated, the threaded cylinder 5 rises when the sleeve 7 rotates, the threaded cylinder 5 is driven to rotate when the sleeve 7 rotates, the rotation direction is limited by the designed limiting rod 9, the rotation of the threaded cylinder 5 is avoided, and the steel strand is driven to move upwards when the threaded cylinder 5 moves upwards, so that the lost prestress can be secondarily pulled back, the prestress loss is effectively reduced, the quality of concrete is improved, when the threaded cylinder 5 moves upwards, a gap appears at the bottom, at the moment, the first spring 10 in the groove 21 pushes the cross rod 22, the cross rod 22 pushes the semicircular bearing blocks 11, by designing a plurality of semicircular bearing blocks 11, the gap can be filled up through the semicircular bearing blocks 11, the lower gap when the threaded cylinder 5 moves upwards is avoided, the threaded cylinder 5 is in a suspended state, the instability when the threaded cylinder 5 is pulled by a steel strand is caused, the stability of the device is further improved, when the clamping piece 6 is installed, because the clamping piece 6 is conical, when the clamping piece 6 approaches the threaded cylinder 5, the two baffle rods 14 are extruded to move towards the left side and the right side of the threaded sleeve 5, the two baffle rods 14 extrude the second spring 13, when the clamping piece 6 passes over the baffle rods 14, the second spring 13 resets, at this time, the second spring 13 resets the gear lever 14, so when the steel strand pulling force is carried out, the manual resetting is not needed, the device can be used more simply and conveniently, when the threaded cylinder 5 moves upwards, the connecting rod 17 is driven to move upwards, the connecting rod 17 moves upwards to drive the triangular block 18 to move upwards, because the triangular block 18 is in a triangular design, when the triangular block 18 moves into the round hole 4, the bottom section of the threaded cylinder 5 can shrink, the effect of further fixing the steel strand is further achieved, when the steel strand is fixed, the two threaded rods 15 are rotated at this time, the two threaded rods 15 move towards the inside of the sleeve 7, the two threaded rods 15 drive the semicircular clamping blocks 16 to move towards the surface of the steel strand, and accordingly the steel strand is fixed, and the fixation of the steel strand can be further enhanced.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The application method of the combined prestress anchor is characterized by comprising the following steps of: the combined type prestress anchorage comprises a shell (1), wherein the lower part of the inner side wall of the shell (1) is fixedly connected with a supporting rod (2), the lower end of the supporting rod (2) is fixedly connected with a corrugated pipe (20), the lower end of the shell (1) is fixedly connected with a threaded rib (3), a round hole (4) is formed in the top of the shell (1), the inner side wall of the round hole (4) is slidably connected with a threaded cylinder (5), the upper end of the threaded cylinder (5) is movably connected with a clamping piece (6), the outer side of the threaded cylinder (5) is in threaded connection with a sleeve (7), the left side and the right side of the interior of the threaded cylinder (5) are provided with cavities (8), and the interior of the shell (1) is fixedly connected with a limiting rod (9) at the lower end of the interior of the cavity (8);
Grooves (21) are formed in the lower end of the inside of the shell (1) and located on the left side and the right side of the threaded cylinder (5), a first spring (10) is fixedly connected to the inside of the grooves (21), a cross rod (22) is fixedly connected to one side, close to the threaded cylinder (5), of the first spring (10), a semicircular bearing block (11) is fixedly connected to the right side of the cross rod (22), and the semicircular bearing blocks (11) are in contact in sequence;
The upper ends of two sides of the inside of the sleeve (7) are provided with sliding grooves (12), the inside of the sliding grooves (12) is fixedly connected with a second spring (13), and one side, close to the threaded cylinder (5), of the second spring (13) is fixedly connected with a baffle rod (14);
connecting rods (17) are fixedly connected to the inner walls of the two sides of the threaded cylinder (5), and triangular blocks (18) are rotatably connected to the lower ends of the connecting rods (17);
Threaded rods (15) are connected to the left side and the right side of the sleeve (7) in a threaded mode, and semicircular clamping blocks (16) are connected to one side, close to the threaded cylinder (5), of the threaded rods (15) in a rotating mode;
The application method of the combined prestress anchor comprises the following steps:
S1: the steel stranded wires pass through the inside of a corrugated pipe (20) in the combined prestress anchorage device, and then extend out through a threaded cylinder (5), and at the moment, the prestress is increased by a jack;
s2: when the prestress of the building is achieved, the chest expander loosens the steel strand, and the steel strand drives the clamping piece (6) to be recovered, so that the steel strand and the clamping piece (6) enter the threaded cylinder (5);
S3: the sleeve (7) is rotated, the threaded cylinder (5) rises when the sleeve (7) rotates, and the threaded cylinder (5) is driven to rotate when the sleeve (7) rotates, and the rotation direction is limited due to the designed limiting rod (9), so that the rotation of the threaded cylinder (5) is avoided;
S4: when the clamping piece (6) approaches the threaded cylinder (5), the two baffle rods (14) are extruded to move to the left side and the right side of the threaded cylinder (5), the two baffle rods (14) extrude the second spring (13), and when the clamping piece (6) passes over the baffle rods (14), the second spring (13) drives the baffle rods (14) to reset;
S5: when the threaded cylinder (5) moves upwards, gaps appear at the bottom, at the moment, the first spring (10) in the groove (21) pushes the cross rod (22), the cross rod (22) pushes the semicircular bearing block (11), the gaps are filled up through the semicircular bearing block (11), gaps appear below the threaded cylinder (5) when moving upwards, the threaded cylinder (5) is in a suspended state, the threaded cylinder (5) is unstable when being pulled by a steel strand, and the stability of the device is further improved;
S6: when the threaded cylinder (5) moves upwards, the connecting rod (17) is driven to move upwards, the connecting rod (17) moves upwards to drive the triangular block (18) to move upwards, and when the triangular block (18) moves to enter the inside of the round hole (4), the bottom section of the threaded cylinder (5) can shrink, so that the steel stranded wire is further fixed.
2. The use method of the combined type prestress anchor as claimed in claim 1, wherein the inner side wall of the semicircular clamping block (16) is provided with a circular groove (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111039038.6A CN113897863B (en) | 2021-09-06 | 2021-09-06 | Use method of combined prestress anchorage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111039038.6A CN113897863B (en) | 2021-09-06 | 2021-09-06 | Use method of combined prestress anchorage device |
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| Publication Number | Publication Date |
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| CN113897863A CN113897863A (en) | 2022-01-07 |
| CN113897863B true CN113897863B (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111039038.6A Active CN113897863B (en) | 2021-09-06 | 2021-09-06 | Use method of combined prestress anchorage device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115030407A (en) * | 2022-05-07 | 2022-09-09 | 卫晓娟 | Prestressed porous anchorage device |
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| CN111173294A (en) * | 2019-12-31 | 2020-05-19 | 中建交通建设集团有限公司 | Spring reset type ultrashort prestressed beam low-retraction tensioning anchoring device and construction method |
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| CN213740593U (en) * | 2020-10-28 | 2021-07-20 | 柳州宣桥预应力机械有限公司 | Low-retraction anchorage device applied to vertical tensioning of bridge |
| CN113322779A (en) * | 2021-05-08 | 2021-08-31 | 林玲 | Prestressed anchorage device |
| CN214090608U (en) * | 2020-11-25 | 2021-08-31 | 衡阳市新德力交通材料有限公司 | Prestressed anchorage utensil for construction |
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2021
- 2021-09-06 CN CN202111039038.6A patent/CN113897863B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2372036A1 (en) * | 2010-03-22 | 2011-10-05 | Hermann Thal | Anchoring device for pre-stressed reinforcement |
| CN208763678U (en) * | 2018-08-08 | 2019-04-19 | 河南省中交路桥工程材料有限公司 | A kind of protective device suitable for flat anchorage |
| CN209277395U (en) * | 2018-12-18 | 2019-08-20 | 袁慧 | A kind of prestressed anchor |
| CN111173293A (en) * | 2019-12-31 | 2020-05-19 | 中建交通建设集团有限公司 | Manual reset type prestressed tendon low-retraction tensioning anchoring device and construction method |
| CN111173294A (en) * | 2019-12-31 | 2020-05-19 | 中建交通建设集团有限公司 | Spring reset type ultrashort prestressed beam low-retraction tensioning anchoring device and construction method |
| CN111535507A (en) * | 2020-05-29 | 2020-08-14 | 合肥铂特精密工具有限公司 | Combined prestressed anchorage device |
| CN213740593U (en) * | 2020-10-28 | 2021-07-20 | 柳州宣桥预应力机械有限公司 | Low-retraction anchorage device applied to vertical tensioning of bridge |
| CN112227223A (en) * | 2020-11-09 | 2021-01-15 | 北京工业大学 | One-time jacking reverse support device of low-retraction anchorage device |
| CN214090608U (en) * | 2020-11-25 | 2021-08-31 | 衡阳市新德力交通材料有限公司 | Prestressed anchorage utensil for construction |
| CN113322779A (en) * | 2021-05-08 | 2021-08-31 | 林玲 | Prestressed anchorage device |
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| CN113897863A (en) | 2022-01-07 |
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Effective date of registration: 20240402 Address after: 545000, Workshop 3, No. 5 Xingsheng Road, Xinxing Industrial Park, Liujiang District, Liuzhou City, Guangxi Zhuang Autonomous Region Applicant after: Liuzhou Dongqiao Prestressed Technology Co.,Ltd. Country or region after: China Address before: 242000 Room 102, building 8, Guoxin century new town, Aofeng East Road, Xuanzhou District, Xuancheng City, Anhui Province Applicant before: Gong Pengpeng Country or region before: China |
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