CN214656484U - Be used for external prestressing steel beam of long-span T roof beam to turn to device - Google Patents
Be used for external prestressing steel beam of long-span T roof beam to turn to device Download PDFInfo
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- CN214656484U CN214656484U CN202120734477.8U CN202120734477U CN214656484U CN 214656484 U CN214656484 U CN 214656484U CN 202120734477 U CN202120734477 U CN 202120734477U CN 214656484 U CN214656484 U CN 214656484U
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Abstract
The embodiment of the utility model provides a relate to bridge reinforcement technical field, disclose a be used for external prestressing steel beam of long span T roof beam to turn to device. The tension device comprises a base steel plate, a first force transmission steel plate, an anchor backing plate, a steel pipe, a stiffening steel plate and a tension device, wherein the tension device comprises a fixed plate, a displacement plate and a telescopic piece; the one end fixed connection of anchor backing plate is kept away from to fixed plate and steel pipe, and the one end and the fixed plate of extensible member deviate from the surface connection of steel pipe, and the other end is connected with the displacement board, and the displacement board is equipped with a plurality of upper limit anchor eyes, and the fixed plate correspondence is equipped with a plurality of lower limit anchor eyes. The embodiment of the utility model provides an it turns to device to be used for the external prestressing steel bunch of long span T roof beam, can solve and can' T carry out the problem that prestressing force size was adjusted to prestressing steel bunch.
Description
Technical Field
The utility model relates to a bridge reinforcement technical field, in particular to be used for external prestressing steel beam of long span T roof beam to turn to device.
Background
The external prestressed reinforcement system is a common bridge reinforcement system, and is a prestressed structural system formed by applying prestress to prestressed tendons arranged outside a main body of a bearing structure. The external prestress reinforcing system consists of a prestress steel beam, an anchoring device, a steering device, a horizontal beam positioner and the like.
In traditional external prestressing force reinforcerment system, anchor, the device that turns to are the concrete component, through drilling bar planting and concreting on the roof beam body, and the common atress of being connected effectively with former bridge structure. Because the external prestress reinforcing system only transfers force by the anchoring device and the steering device, the reliability and the safety of the external prestress anchoring device and the steering device are very important. The traditional external prestress reinforcing device lacks a matched anchorage device for clamping the prestress steel beam, and cannot adjust the prestress of the prestress steel beam.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be used for external prestressing steel bunch of long span T roof beam to turn to device for can solve and can' T carry out the problem that prestressing force size was adjusted to prestressing steel bunch.
In order to solve the technical problem, an embodiment of the utility model provides an external prestressed steel beam steering device for a large-span T beam, which comprises a base steel plate, a first force transmission steel plate, an anchor backing plate, a steel pipe, a stiffening steel plate and a tensioning device, wherein the tensioning device comprises a fixed plate, a displacement plate and a telescopic piece; the first force transmission steel plates are arranged on the base steel plate in parallel at intervals; the plurality of stiffening steel plates are respectively arranged on the base steel plate in parallel at intervals and are perpendicular to the first force transmission steel plate; the steel pipe is inserted into the stiffening steel plate, and the axis of the steel pipe is parallel to the length direction of the first force transmission steel plate; the anchor backing plate is arranged at the tail end of the steel pipe, and the first force transmission steel plate and the steel pipe are respectively abutted against the end face of the anchor backing plate; the one end fixed connection of anchor backing plate is kept away from to fixed plate and steel pipe, and the one end and the fixed plate of extensible member deviate from the surface connection of steel pipe, and the other end is connected with the displacement board, and the displacement board is equipped with a plurality of upper limit anchor eyes, and the fixed plate correspondence is equipped with a plurality of lower limit anchor eyes.
In addition, the displacement plate is provided with a boss, the fixed plate is correspondingly provided with a groove, so that when the displacement plate is close to the fixed plate, the boss is matched with the groove, the upper limiting anchor hole is arranged on the surface of the boss, and the lower limiting anchor hole is arranged in the groove.
In addition, a support plate is arranged between the anchor backing plate and the end faces of the first force transmission steel plate and the steel pipe, and the end faces of the first force transmission steel plate and the steel pipe are abutted to the anchor backing plate through the support plate.
In addition, one side of the anchor backing plate, which is far away from the steel pipe, is also provided with two second force transmission steel plates which are arranged in parallel at intervals.
In addition, the device also comprises a steering device and a horizontal beam positioner, and the two ends of the prestressed steel beam sequentially penetrate through the steering device, the horizontal beam positioner and the steel pipe respectively.
In addition, the steering device comprises a plurality of base plates, a force guide plate, a reinforcing plate and a steering gear, wherein the base plates are arranged in parallel at intervals and connected through a supporting plate, and two plate bodies arranged in parallel are arranged on two outer side surfaces of each base plate; the outer side surfaces of the two plate bodies are respectively provided with a force guide plate, a reinforcing plate is arranged between the two plate bodies, the reinforcing plate, the plate bodies and the base plate form a sealed cavity, the steering gear is arranged in the sealed cavity, and epoxy mortar is filled between the sealed cavity and the steering gear.
In addition, the horizontal beam positioner comprises two supports and an annular component, wherein the two supports are arranged in parallel at intervals, and the annular component is arranged between the two supports.
In addition, the annular component includes two mounting plates, and the middle part of mounting plate is equipped with semicircular groove, and the both ends of mounting plate are equipped with connecting portion, and two connecting portion pass through the recess and link to each other, and connecting portion department is equipped with connecting screw.
In addition, the two end faces of the diverter are 10cm away from the end face of the sealing cavity.
The utility model discloses embodiment is for prior art, through adopting the base steel sheet, first power transmission steel sheet, the steel sheet of putting more energy into, the structure of anchor backing plate and steel pipe inter combination, during the use, pass through the crab-bolt with the base steel sheet and the roof beam body and be connected, and press and annotate the tank steel glue and paste, form anchor device's installation base, the prestressing steel bundle passes the steel pipe, the steel-pipe framework is established on first power transmission steel sheet, utilize first power transmission steel sheet directly to bear prestressing steel bundle pressure, and transmit to the base steel sheet through the shear force on, the steel sheet of putting more energy into provides horizontal support for first power transmission steel sheet, make first power transmission steel sheet atress more even stable, and the anchor backing plate bears the local pressure of jack when the construction, transmit pressure to first power transmission steel sheet on. The utility model discloses an external prestressing steel beam of long span T roof beam that is used for among the embodiment turns to device, its simple structure, atress are even, long service life, and because whole structure all adopts the steel construction, consequently, the part can be directly at mill's processing production, again at job site direct mount. In the use, fix prestressing steel bundle and displacement plate through last spacing anchor eye, drive the displacement plate through the extensible member and remove in order to change the distance between fixed plate and the displacement plate, realize the stretch-draw to prestressing steel bundle, and then adjust prestressing steel bundle's prestressing force, simple structure, convenient to use.
Drawings
Fig. 1 is a schematic cross-sectional view of an external prestressed beam steering device for a long-span T-beam according to a first embodiment of the present invention;
fig. 2 is a cross-sectional view I-I of fig. 1 according to the present invention;
fig. 3 is a schematic structural view of an external prestressed steel beam steering device for a long-span T-beam according to a first embodiment of the present invention;
fig. 4 is a schematic structural view of a steering device according to a first embodiment of the present invention;
fig. 5 is a cross-sectional view I-I of fig. 4 according to the present invention;
fig. 6 is a schematic structural view of a horizontal beam positioner according to a first embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solution claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments.
The external prestressed reinforcement system is a common bridge reinforcement system, and is a prestressed structural system formed by applying prestress to prestressed tendons arranged outside a main body of a bearing structure. The external prestress reinforcing system consists of a prestress steel beam, an anchoring device, a steering device, a horizontal beam positioner and the like.
In traditional external prestressing force reinforcerment system, anchor, the device that turns to are the concrete component, through drilling bar planting and concreting on the roof beam body, and the common atress of being connected effectively with former bridge structure. Because the external prestress reinforcing system only transfers force by the anchoring device and the steering device, the reliability and the safety of the external prestress anchoring device and the steering device are very important. The traditional external prestress reinforcing device lacks a matched anchorage device for clamping the prestress steel beam, and cannot adjust the prestress of the prestress steel beam.
The utility model discloses a first embodiment relates to a be used for external prestressing steel bundle of long-span T roof beam to turn to device, as shown in fig. 1 to fig. 6, be used for the external prestressing steel bundle of long-span T roof beam to turn to the device and include base steel sheet 11, first power transmission steel sheet 12, anchor backing plate 13, steel pipe 14, steel sheet 15 and the tensioning equipment 50 of putting more energy into, tensioning equipment 50 includes fixed plate 51, displacement plate 52, extensible member 53. The first force-transmitting steel plates 12 are provided in plurality, and the plurality of first force-transmitting steel plates 12 are respectively installed in parallel on the base steel plate 11 at intervals. The plurality of stiffening steel plates 15 are arranged on the base steel plate 11 in parallel at intervals and are perpendicular to the first force transmission steel plate 12. The steel pipe 14 is inserted into the stiffening steel plate 15, and the axis of the steel pipe 14 is parallel to the first force transmission steel plate 12. The anchor backing plate 13 is arranged at the tail end of the steel pipe 14, and the first force transmission steel plate 12 and the steel pipe 14 are respectively abutted against the end face of the anchor backing plate 13. The fixed plate 51 is fixedly connected with one end of the steel pipe 14 far away from the anchor backing plate 13, one end of the telescopic piece 53 is connected with the surface of the fixed plate 51 far away from the steel pipe 14, the other end of the telescopic piece is connected with the displacement plate 52, the displacement plate 52 is provided with a plurality of upper limiting anchor holes (not shown), and the fixed plate 51 is correspondingly provided with a plurality of lower limiting anchor holes (not shown).
During the use, pass through the crab-bolt with base steel sheet 11 and the roof beam body and be connected, and the pressure is annotated a jar steel glue and is pasted, form the installation base, prestressing steel bundle 20 passes steel pipe 14, steel pipe 14 erects on stiffening steel sheet 15, utilize first power transmission steel sheet 12 directly to bear prestressing steel bundle 20 pressure, and transmit on base steel sheet 11 through the shear force, stiffening steel sheet 15 provides horizontal support for first power transmission steel sheet 12, make first power transmission steel sheet 12 atress more evenly stable, and anchor backing plate 13 bears the local pressure of jack when the stretch-draw construction, transmit pressure on first power transmission steel sheet 12.
In addition, one end of the prestressed steel strand 20 sequentially passes through a lower limit anchor hole (not shown) and an upper limit anchor hole (not shown), and the prestressed steel strand 20 is fixedly connected with the displacement plate 52 through a high-strength bolt, when the prestress of the prestressed steel strand 20 needs to be adjusted, the displacement plate 52 is driven to move through the telescopic part 53, so that the displacement plate 52 is close to or far away from the fixed plate 51, a certain tensioning effect is performed on the prestressed steel strand 20, and the prestress of the prestressed steel strand 20 is adjusted. The telescopic member 53 may be a jack or a telescopic column driven by an air cylinder. The end of the prestressed steel beam 20 connected with the displacement plate 52 is provided with an expansion joint, and the prestressed steel beam 20 and the displacement plate 52 are fixedly installed by the cooperation of the expansion joint and an upper limiting anchor hole (not shown).
Compare with traditional external prestressing steel beam steering device, the utility model discloses a pure steel construction to utilize base steel sheet 11 and roof beam body to adopt the crab-bolt to combine, make its installation simpler, adopt the processing method of drilling bar planting and concreting on the roof beam body with the tradition and compare, its very big whole time limit for a project that has shortened, simultaneously, greatly reduced on-the-spot direct drilling and lead to aperture nonconformity and machining error and cause the problem that roof beam body intensity reduces.
In this embodiment, through adopting base steel sheet 11, first power transmission steel sheet 12, stiffening steel sheet 15, anchor backing plate 13 and the structure of steel pipe 14 inter combination, during the use, pass through the crab-bolt with base steel sheet 11 and the roof beam body and be connected, and the pressure injection tank steel glue pastes, form anchor's installation base, prestressing steel bundle 20 passes steel pipe 14, steel pipe 14 erects on first power transmission steel sheet 12, utilize first power transmission steel sheet 12 directly to bear prestressing steel bundle pressure, and transmit to base steel sheet 11 through the shear force, stiffening steel sheet 15 provides horizontal support for first power transmission steel sheet 12, make first power transmission steel sheet 12 atress more even stable, and anchor backing plate 13 bears the local pressure of jack during the stretch-draw construction, transmit pressure to first power transmission steel sheet 12 on. The utility model discloses an external prestressing steel beam of long span T roof beam that is used for among the embodiment turns to device, its simple structure, atress are even, long service life, and because whole structure all adopts the steel construction, consequently, the part can be directly at mill's processing production, again at job site direct mount. In the using process, the prestressed steel bundles are fixed with the displacement plate 52 through the upper limiting anchor hole (not shown), the displacement plate 52 is driven to move through the telescopic piece 53 to change the distance between the fixed plate 51 and the displacement plate 52, the prestressed steel bundles 20 are tensioned, and the prestress of the prestressed steel bundles is adjusted.
The displacement plate 52 is provided with a boss, the fixed plate 51 is correspondingly provided with a groove, so that when the displacement plate 52 is close to the fixed plate 51, the boss is inserted into the groove, the upper limit anchor hole (not shown) is arranged on the surface of the boss, and the lower limit anchor hole (not shown) is arranged in the groove. Through the structural design of the lug boss and the groove, the displacement plate 52 and the fixed plate 51 are not easy to move relatively under the axial tension of the prestressed steel beam 20, the connecting capacity of the displacement plate 52 and the fixed plate 51 is improved, and the phenomenon that the displacement plate 52 is deformed and dislocated under the conditions that the anchorage device is subjected to high-strength acting force and the clamping force of the anchorage device is adjusted is reduced.
A support plate 16 is further arranged between the anchor backing plate 13 and the end faces of the first force transmission steel plate 12 and the steel pipe 14, the end faces of the first force transmission steel plate 12 and the steel pipe 14 are abutted against the anchor backing plate 13 through the support plate 16, and the overall strength is effectively improved by the aid of a structure of combining the support plate 16 with the anchor backing plate 13. It is worth to be noted that the support plate 16 and the anchor backing plate 13 of the invention are provided with the through holes with the hole diameter larger than the outer diameter of the steel pipe 14, and the tail end of the steel pipe 14 penetrates through the through holes to be flush with the end face of the anchor plate.
In order to ensure that the stress on the steel pipe 14 can be more uniformly transmitted to the base steel plate 11, the side of the anchor backing plate 13 away from the steel pipe 14 is further provided with two second force transmission steel plates 121 which are arranged in parallel at intervals.
The external prestressed steel beam steering device for the long-span T-beam in the embodiment further comprises a steering device 30 and a horizontal beam positioner 40, wherein two ends of the prestressed steel beam 20 sequentially penetrate through the steering device 30, the horizontal beam positioner 40 and the steel pipe 14 respectively, as shown in fig. 3.
As shown in fig. 4 and fig. 5, the steering device 30 includes a plurality of base plates 31, a force guiding plate 33, a reinforcing plate 34 and a steering gear 35, wherein the plurality of base plates 31 are arranged in parallel and spaced apart from each other, and are connected to each other by a supporting plate 32, and two parallel plate bodies 36 are arranged on two outer side surfaces of the base plates 31; the outer side surfaces of the two plate bodies 36 are respectively provided with a force guide plate 33, as shown in the figure, one side surface of the force guide plate 33 is fixedly connected with the base plate 31, and the other side surface of the force guide plate 33 is connected with the outer side surface of the plate body 36 to form a support for the plate body 36 so as to transmit the stress in the steering gear 35 to the base plate 31; a reinforcing plate 34 is arranged between the two plate bodies 36, the reinforcing plate 34 is used for supporting the two plate bodies 36 on one hand, the reinforcing plate 34, the plate bodies 36 and the base plate 31 form a sealed cavity, and meanwhile, a second stiffening steel plate 38 is arranged between the reinforcing plate 34 and the plate bodies 36; the diverter 35 is installed in the sealed cavity, and the epoxy mortar 37 is filled between the sealed cavity and the diverter 35, so that on one hand, the strength of the diverter can be improved by using the epoxy mortar 37, on the other hand, the prestress applied to the diverter 35 can be uniformly transmitted to the force guide plate 33 through the epoxy mortar 37 and then uniformly transmitted to the substrate 31 through the force guide plate 33, and the stress is dredged.
In order to ensure the smooth transition of the prestressed steel beam 20, the distance between the two end surfaces of the diverter 35 needs to be 10cm from the end surface extending out of the sealing cavity.
When the distance between the steel pipe 14 and the steering device 30 or the steering device 30 is too long and the bridge is vibrated by load, the steel beam swings too much, which affects the stress effect of the steel pipe 14 and the steering device 30. Therefore, the horizontal beam positioner 40 is arranged in the middle to fix the position of the steel beam and ensure the linear shape and the stress effect of the steel beam.
In the present embodiment, a horizontal beam positioner 40 is used to position the prestressed steel beam 20, and the horizontal beam positioner 40 will be described in further detail below, referring to fig. 6, as shown in the drawings, the horizontal beam positioner 40 includes two brackets 41 and an annular member, the two brackets 41 are arranged in parallel and spaced, the annular member is arranged between the two brackets 41, wherein the annular member includes two fastening plates 42, a semicircular groove 43 is formed in the middle of the fastening plate 42, the concave surfaces of the two semicircular grooves 43 are arranged oppositely, so that the two semicircular grooves 43 form a ring together, and the prestressed steel beam 20 passes through the ring formed by the two semicircular grooves 43 to realize a positioning function. The fastening plate 42 has coupling parts 44 at both ends thereof with a gap between the two coupling parts 44, and coupling screws 45 provided at the coupling parts 44 and penetrating the two coupling parts 44 at the same time to fix the two coupling parts 44. In use, the two fastening plates 42 are used to effect the transfer of the pre-stressing force.
It should be noted that the prestressed steel strand 20 is a prestressed steel strand with an epoxy coating on the surface. Each prestressed steel strand 20 is 9-phis15.2mm, standard strength fpk1860MPa, modulus of elasticity Ep＝1.95×105Mpa, anchor-down controlled tensile stress sigmacon＝0.60fpkAnd a tension mode of stretching two ends is adopted when the pressure is 1116 Mpa. The prestressed steel bundles 20 are required to meet the regulations of prestressed steel bundles for prestressed concrete GB/T5224-2003; the epoxy spraying prestressed steel beam meets the regulations of the single wire coating epoxy coating prestressed steel beam GB/T25823-2010.
In the external prestressed steel beam steering device for the large-span T-shaped beam in the embodiment, the steering device 30 and the horizontal beam positioner 40 which are of pure steel structures are adopted, so that all devices are flexibly arranged, and the full-bridge reinforcement and the local reinforcement of the bridge can be realized according to the damage degree of the bridge; meanwhile, the external prestressed steel beam steering device for the large-span T-shaped beam in the embodiment has small size and little self weight increase, so that the structural bearing capacity can be effectively and greatly improved; meanwhile, the steering device 30 and the horizontal beam positioner 40 are not bonded with the original structure, so that the stress change is small, and the stress on the structure is facilitated; the middle steel structural component of the utility model is adjustable and replaceable, which is convenient for maintenance during use; the steering device 30 has the physical properties close to those of the steel bundle, and deforms uniformly under the action of temperature load, so that the prestress loss is not easy to cause; the construction is simple and convenient, the prefabricated components can be directly installed, and the construction period is greatly shortened; traffic does not need to be sealed in the construction process, and the traffic of vehicles on the bridge deck is not influenced.
Compared with the traditional external prestress reinforcement system, the utility model has simpler and more convenient construction and can greatly shorten the construction period; the member has small size and is not bonded with the original structure, so that the influence on the original structure is less, and the capacity of bearing the original structure can be improved; the physical properties of all components are close, the deformation caused by the temperature influence is consistent, and the prestress loss is reduced; and each steel structural member can be replaced at any time in the later maintenance process.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (9)
1. The utility model provides a be used for external prestressing steel bunch of long span T roof beam to turn to device for install prestressing steel bunch, its characterized in that includes: the tensioning device comprises a fixed plate, a displacement plate and a telescopic piece;
the first force transmission steel plates are arranged on the base steel plate in parallel at intervals; the plurality of stiffening steel plates are arranged on the base steel plate in parallel at intervals and are perpendicular to the first force transmission steel plate; the steel pipe is inserted on the stiffening steel plate, and the axis of the steel pipe is parallel to the length direction of the first force transmission steel plate; the anchor backing plate is arranged at the tail end of the steel pipe, and the first force transmission steel plate and the steel pipe are respectively abutted against the end face of the anchor backing plate;
the fixed plate with the steel pipe is kept away from the one end fixed connection of anchor backing plate, the one end of extensible member with the fixed plate deviates from the surface connection of steel pipe, the other end with the displacement board is connected, the displacement board is equipped with a plurality of upper limit anchor eyes, the fixed plate corresponds and is equipped with a plurality of lower limit anchor eyes.
2. The device as claimed in claim 1, wherein the displacement plate is provided with a boss, the fixing plate is correspondingly provided with a groove, so that when the displacement plate is close to the fixing plate, the boss is matched with the groove, the upper limit anchor hole is formed in the surface of the boss, and the lower limit anchor hole is formed in the groove.
3. The device for turning the external prestressed steel beam for the long-span T-beam as claimed in claim 2, wherein a support plate is further arranged between the anchor backing plate and the end faces of the first force transmission steel plate and the steel pipe, and the end faces of the first force transmission steel plate and the steel pipe are abutted against the anchor backing plate through the support plate.
4. The device for turning the external prestressed steel beam for the long-span T-shaped beam according to claim 3, wherein one side of the anchor backing plate, which is far away from the steel pipe, is further provided with two second force transmission steel plates which are arranged in parallel at intervals.
5. The device for turning the prestressed steel strand outside the large-span T-beam body according to claim 4, further comprising a turning device and a horizontal strand positioner, wherein two ends of the prestressed steel strand are sequentially inserted into the turning device, the horizontal strand positioner and the steel pipe respectively.
6. The external prestressed steel beam steering device for the long-span T-beam according to claim 5, wherein the steering device comprises a plurality of base plates, a force guide plate, a reinforcing plate and a steering gear, the base plates are arranged in parallel at intervals and connected through a supporting plate, and two parallel plate bodies are arranged on two outer side surfaces of each base plate; the outer side surfaces of the two plate bodies are respectively provided with the force guide plate, the reinforcing plate is arranged between the two plate bodies, the reinforcing plate, the plate bodies and the base plate form a sealed cavity, the steering gear is arranged in the sealed cavity, and epoxy mortar is filled between the sealed cavity and the steering gear.
7. The device as claimed in claim 6, wherein the horizontal beam positioner comprises two brackets and a ring-shaped member, the two brackets are arranged in parallel and spaced, and the ring-shaped member is arranged between the two brackets.
8. The device for turning the external prestressed steel beam for the long-span T-shaped beam according to claim 7, wherein said annular member comprises two fastening plates, a semicircular groove is formed in the middle of each fastening plate, connecting portions are formed at the two ends of each fastening plate, the two connecting portions are connected through the grooves, and a connecting screw is arranged at each connecting portion.
9. The device for turning the large-span T-beam in-vitro prestressed steel beam as claimed in claim 8, wherein two end faces of said diverter are 10cm away from an end face of said sealing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120734477.8U CN214656484U (en) | 2021-04-10 | 2021-04-10 | Be used for external prestressing steel beam of long-span T roof beam to turn to device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120734477.8U CN214656484U (en) | 2021-04-10 | 2021-04-10 | Be used for external prestressing steel beam of long-span T roof beam to turn to device |
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| Publication Number | Publication Date |
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| CN214656484U true CN214656484U (en) | 2021-11-09 |
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| CN202120734477.8U Active CN214656484U (en) | 2021-04-10 | 2021-04-10 | Be used for external prestressing steel beam of long-span T roof beam to turn to device |
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| CN (1) | CN214656484U (en) |
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2021
- 2021-04-10 CN CN202120734477.8U patent/CN214656484U/en active Active
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