CN114941449B - Tensioning device, tensioning and reinforcing system and method for TRM (Top gas insulated switchgear) grating - Google Patents
Tensioning device, tensioning and reinforcing system and method for TRM (Top gas insulated switchgear) grating Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 19
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- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 238000001179 sorption measurement Methods 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 13
- 239000004570 mortar (masonry) Substances 0.000 claims description 12
- 239000012779 reinforcing material Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 239000007921 spray Substances 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 abstract description 14
- 230000007547 defect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
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- 230000002411 adverse Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000876 geopolymer Polymers 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0244—Increasing or restoring the load-bearing capacity of building construction elements of beams at places of holes, e.g. drilled in them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a tensioning device, a tensioning and reinforcing system and a method of a TRM (blast furnace roof) grid, wherein the tensioning device comprises a TRM grid to be tensioned, and two ends of the TRM grid to be tensioned are respectively provided with a clamp, a positioning electromagnet group and a tensioning electromagnet group; the clamp is used for clamping the end part of the TRM grating to be stretched, the positioning electromagnet group is constructed to suspend and position the clamp after being electrified, and the clamp is positioned in the adsorption range of the positioning electromagnet group; one end of the stretching electromagnet group is fixedly connected with the positioning electromagnet group, the other end of the stretching electromagnet group is fixed on a component to be reinforced, and the stretching electromagnet group is constructed to generate stretching force on the TRM grating to be stretched after being electrified; the tensioning and reinforcing system comprises a spraying device and the tensioning device; the tensioning and reinforcing method adopts a tensioning and reinforcing system to realize the tensioning and reinforcing of the TRM grid reinforced injection composite material. The invention can accurately apply tension force to the TRM grid reinforced jet composite material, and has the advantages of strong adaptability, high assembly degree, wide application range and the like.
Description
Technical Field
The invention relates to the technical field of civil engineering construction, in particular to a tensioning device, a tensioning and reinforcing system and a tensioning and reinforcing method for a TRM (blast furnace concrete) grid.
Background
Because of the properties of high ductility, tensile strain hardening, and multi-crack cracking of injection-cured Cementitious Composite (ECC), TRM (textile Reinforced Mortar) grid-Reinforced ECC composites have been widely used in recent years for repair and reinforcement of components. The tensile stress of the TRM grating can provide stronger anti-cracking capability and more excellent integral stress performance for the whole composite material, and the interface stress concentration between the repairing layer and the original fire damage structure is relieved, so that the occurrence of interface stripping is delayed and even inhibited, and the efficient utilization of the composite material grating is realized. However, the existing TRM grid tensioning technology is rough, so that the TRM grid cannot be stretched to an ideal stress level, and the TRM grid reinforced injection ECC composite material is not favorable for exerting the mechanical property advantages of the TRM grid reinforced injection ECC composite material.
Meanwhile, the existing grid reinforced sprayed ECC composite tensioning technology often requires that embedded parts are arranged in the components, and parts required by tension are left after tensioning. Through retrieval, the Chinese invention patent with the application publication number of CN111502326A discloses a rapid prestress FRP grid reinforcing method, which comprises the following steps: cleaning the surface of a concrete structure to be reinforced; (2) installing a prestressed anchorage device on the surface of the structure; (3) coating a layer of interfacial agent on the surface of the structure; (4) Respectively fastening two ends of the FRP grid in a prestressed anchorage device, and then tensioning the prestressed anchorage device; (5) Sealing the middle part of the FRP grid by adopting polymer mortar, and sealing the two ends of the FRP grid by adopting geopolymer mortar; (6) And after the geopolymer mortar at the two ends reaches the designed strength, the prestressed anchorage device is dismantled, and the polymer mortar in the middle part is continuously maintained until the polymer mortar reaches the designed strength. However, the present invention still has the following problems: this leaves the component with initial defects, which in turn lead to residual stresses within the component and interface, with certain adverse effects on the safety and durability of the structure.
Therefore, the TRM grid tensioning device and the tensioning and reinforcing system which are accurate and easy to implement and high in assembling degree have important significance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a tensioning device, a tensioning and reinforcing system and a tensioning and reinforcing method for a TRM (blast furnace top gas recovery module) grid.
The invention is realized by the following technical scheme:
according to a first aspect of the invention, a stretching device of a TRM (blast furnace roof) grid is provided, which comprises a TRM grid to be stretched, wherein two ends of the TRM grid to be stretched are respectively provided with a clamp, a positioning electromagnet group and a stretching electromagnet group, and the clamp, the positioning electromagnet group and the stretching electromagnet group are symmetrically arranged at two ends of the TRM grid to be stretched; the clamp is used for clamping the end part of the TRM grating to be tensioned, the positioning electromagnet group is configured to suspend and position the clamp after being electrified, and the clamp is positioned in the adsorption range of the positioning electromagnet group; one end of the stretching electromagnet group is fixedly connected with the positioning electromagnet group, the other end of the stretching electromagnet group is fixed on a component to be reinforced, and the stretching electromagnet group is constructed to generate stretching force on the TRM grating to be stretched after being electrified.
Furthermore, the positioning electromagnet group comprises a first positioning electromagnet and a second positioning electromagnet, the first positioning electromagnet and the second positioning electromagnet are respectively positioned above and below the fixture, and the first positioning electromagnet and the second positioning electromagnet are arranged in a mode that the same magnetic poles are opposite.
Furthermore, the tensioning electromagnet group comprises a traction end tensioning electromagnet and a dragged end tensioning electromagnet, the positioning electromagnet group is fixedly connected with the dragged end tensioning electromagnet, and the traction end tensioning electromagnet is fixed at a preset position through a fixing device before being electrified and tensioned.
Further, the preset position is determined according to the member to be reinforced.
Furthermore, the traction end tensioning electromagnet is fixed on a member to be reinforced through an assembled support.
Furthermore, the positioning electromagnet group is fixedly connected with the pulled end stretching electromagnet through a support.
Further, anchor clamps are iron anchor clamps, anchor clamps include two iron plates and bolt, two iron plates are located respectively treat the top and the below of stretch-draw TRM grid, two iron plates pass through the bolt will treat that the stretch-draw TRM grid presss from both sides tightly.
According to a second aspect of the present invention, there is provided a tensioned reinforcement system for a TRM grid, comprising: and the spraying device is configured to spray reinforcing materials to the tensioned TRM grating so as to form a reinforcing layer on the tensioned TRM grating.
According to a third aspect of the present invention, there is provided a method for tensioning and reinforcing a TRM grid, which is implemented based on the above-mentioned system for tensioning and reinforcing a TRM grid, and includes:
electrifying a positioning electromagnet group, and carrying out suspension positioning on clamps at two ends of a TRM grid to be stretched;
then electrifying the stretching electromagnet group, and stretching the TRM grating to be stretched to a preset length;
spraying a reinforcing material on the tensioned TRM grating by using a spraying device to form a reinforcing layer;
and forming a TRM grid reinforced injection reinforcing layer after the reinforcing layer is condensed.
Further, the reinforcing material is any one of ECC, cement, oligomer mortar and pozzolan mortar.
Compared with the prior art, the invention has the following beneficial effects:
(1) The tensioning device, the tensioning and reinforcing system and the tensioning and reinforcing method of the TRM grating can effectively improve the tensioning precision of the TRM, so that the stress level of the TRM after tensioning is better adapted to reinforced materials such as ECC (error correction code), the tensioning force is accurately applied to the TRM grating reinforced injection ECC composite material, the mechanical principle is helped to fall to the ground in engineering application, and the mechanical property of the material is better utilized.
(2) The tensioning device, the tensioning and reinforcing system and the method of the TRM grating can overcome the defect that parts are easy to remain in the existing tensioning process, and further eliminate initial defects caused by the remaining parts and adverse effects on component safety caused by the initial defects.
(3) The TRM grid tensioning device, the TRM grid tensioning and reinforcing system and the TRM grid tensioning and reinforcing method are strong in adaptability, high in assembly degree, low in cost, simple and easy to implement, capable of being suitable for various complex working conditions by replacing components, and wide in application range, and modularization and assembly are very easy to achieve.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of a tensioning system of a TRM grid according to an embodiment of the present invention;
FIG. 2 is a schematic view of the configuration of the end of the tensioning system of the TRM grid in accordance with one embodiment of the present invention;
fig. 3 is a basic view of the end of the tensioning system of the TRM grid in an embodiment of the invention, wherein (a) is a schematic top view, (b) is a schematic axis view, (c) is a schematic left view, and (d) is a schematic front view;
FIG. 4 is a schematic view of a tensioning system tensioning a reinforcing beam using a TRM grid in accordance with an embodiment of the present invention;
fig. 5 is a schematic view of a TRM grid reinforcing spray ECC reinforcement layer member formed after spraying ECC on the stretched TRM grid.
In the figure: the TRM grille tensioning device comprises a TRM grille to be tensioned, a clamp, a first positioning electromagnet, a pulled end tensioning electromagnet, a spraying device, a second positioning electromagnet, a pulling end tensioning electromagnet, a reinforced beam and an ECC base body, wherein the TRM grille to be tensioned is 1, the clamp is 2, the first positioning electromagnet is 3, the pulled end tensioning electromagnet is 4, the spraying device is 5, the second positioning electromagnet is 6, the pulling end tensioning electromagnet is 7, the reinforced beam is 8, and the ECC base body is 9.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the concept of the invention. All falling within the scope of the present invention. In the description of the embodiments of the present invention, it should be noted that the terms "first", "second", and the like in the description and the claims of the present invention and the drawings described above are used for distinguishing similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
The embodiment of the invention provides a tensioning device of a TRM (blast furnace roof) grid, and referring to fig. 1-3, the tensioning device of the TRM grid comprises a TRM grid 1 to be tensioned, two ends of the TRM grid 1 to be tensioned are respectively provided with a clamp 2, a positioning electromagnet group and a tensioning electromagnet group, and the clamp 2, the positioning electromagnet group and the tensioning electromagnet group are symmetrically arranged at two ends of the TRM grid 1 to be tensioned; for one end of a TRM grid 1 to be tensioned, the clamp 2 is used for clamping the end part of the TRM grid 1 to be tensioned, the positioning electromagnet group is constructed to suspend and position the clamp 2 after being electrified, and the clamp 2 is positioned in the adsorption range of the positioning electromagnet group; one end of the stretching electromagnet group is fixedly connected with the positioning electromagnet group, the other end of the stretching electromagnet group is fixed on the component to be reinforced, and the stretching electromagnet group is constructed to generate stretching force on the TRM grating 1 to be stretched after being electrified.
According to the tensioning device for the TRM grid, the tensioning force is applied to the TRM grid 1 to be tensioned and the TRM grid is tensioned to the preset length through the clamp 2, the positioning electromagnet group and the tensioning electromagnet group which are designed in a modularized mode, so that the tensioning precision of the TRM can be effectively improved, the defect that parts are easy to remain in the existing tensioning process is overcome, and further the initial defect caused by the remaining parts and the adverse effect of the residual parts on the safety of components are eliminated; in addition, the device in the embodiment of the invention has the advantages that the parts are all assembled, the reinforcing and installation can be carried out on various beams and plates needing to be reinforced, the adaptability is strong, the assembly degree is high, the modularization and the assembly are very easy to realize, the device can be applied to various complex working conditions such as bridges, floors after fire disasters, beams in construction and the like by replacing components, and the application range is wide.
The two ends of the TRM grid 1 to be tensioned are clamped by the clamp 2, in some preferred embodiments, in order to enable the positioning electromagnet group to generate the acting force for suspension positioning on the clamp 2, the clamp 2 is an iron clamp and comprises two iron plates and a bolt, the bolt is used for connecting the two iron plates, the two iron plates are respectively positioned above and below the TRM grid 1 to be tensioned, and the two iron plates clamp the TRM grid 1 to be tensioned through the bolt, so that the TRM grid 1 to be tensioned is fixed so as to exert the tensioning force.
The clamps 2 at two ends of the TRM grid 1 to be stretched are respectively placed in the adsorption range of the positioning electromagnet located at the same end of the TRM grid 1 to be stretched, in some preferred embodiments, with reference to fig. 1-3, the positioning electromagnet group comprises a first positioning electromagnet 3 and a second positioning electromagnet 6, the first positioning electromagnet 3 and the second positioning electromagnet 6 are respectively located above and below the clamps 2, the first positioning electromagnet 3 and the second positioning electromagnet 6 are arranged in a mode of being opposite to each other in the same magnetic pole, and the end of the TRM grid 1 to be stretched is suspended between the positioning electromagnet groups after the positioning electromagnet groups are electrified.
According to the mechanics principle, the TRM grid 1 to be tensioned is arranged in the middle of a reinforcement material matrix such as an ECC matrix, so that the ECC matrix is arranged on the upper surface and the lower surface of the TRM grid to transmit stress, and therefore, the TRM grid 1 to be tensioned is suspended at a certain height at first, and the currents at the upper end and the lower end are kept consistent by adjusting the distance between two positioning electromagnets, so that the TRM grid 1 to be tensioned is suspended between the two positioning electromagnets, and a person skilled in the art can understand that the suspension height of the TRM grid 1 to be tensioned can be adjusted according to engineering requirements.
In some preferred embodiments, the tensioning electromagnet group comprises a traction end tensioning electromagnet 7 and a traction end tensioning electromagnet 4, the positioning electromagnet group is fixedly connected with the traction end tensioning electromagnet 4, and the traction end tensioning electromagnet 7 is fixed at a preset position through a fixing device before being electrified and tensioned.
The length of the tension is related to the degree of reinforcement required by the member to be reinforced, and in some preferred embodiments, the predetermined position is determined based on the member to be reinforced.
In some preferred embodiments, the traction end tensioning electromagnet 7 is fixed on the member to be reinforced through a fabricated bracket, so that the TRM grid is just stretched to a specified length when the traction end tensioning electromagnet 4 is adsorbed on the traction end tensioning electromagnet 7. The stretching force required by stretching in different lengths is different, the larger the stretching length is, the larger the required electromagnetic attraction force is, and the larger the current is, and in order to realize stretching in different lengths, the magnitude of the electromagnetic attraction force can be adjusted by controlling the current in practical application.
In some preferred embodiments, the positioning electromagnet group is fixedly connected with the pulled end stretching electromagnet 4 through a bracket. When the tensioning system is used, the positioning electromagnet group is electrified, so that the positioning electromagnet group can suspend and fix the end of the TRM grid 1 to be tensioned; and then electrifying the stretching electromagnet group, so that the end head of the TRM grating 1 to be stretched moves to the stretching electromagnet 7 at the traction end along with the stretching electromagnet 4 at the traction end, thereby realizing the stretching of the TRM grating.
The tensioning device of the TRM grating in the embodiment of the invention can accurately apply tensioning force to the grating to be tensioned, so that tensioning with a preset length is realized. For example, when the TRM grid to be tensioned is in a natural stretching state of 800 meters, if the TRM grid is stretched for 200 meters, the traction end of a traction electromagnet needs to be fixed on a member to be reinforced, and the traction ends of the traction electromagnets at the two ends of the TRM grid to be tensioned are 1000 meters apart; then an assembly body formed by the pulled end of the tension electromagnet and the TRM grating to be reinforced is placed in the 1000-meter space, the pulled end of the tension electromagnet is adsorbed to the pulling end of the traction electromagnet after being electrified, the TRM grating with the length of 800 meters is pulled to the preset length of 1000 meters, and the preset tension force is realized.
The embodiment of the present invention further provides a tensioning and strengthening system for a TRM grid, and with continued reference to fig. 1, the tensioning and strengthening system includes: the injection device 5 and the tensioning device of the TRM grid in the above embodiment, the injection device 5 is configured to inject the reinforcing material to the tensioned TRM grid to form a reinforcing layer on the tensioned TRM grid.
In some preferred embodiments, the reinforcement material sprayed by the spray device 5 onto the tensioned TRM grid may be an ECC material to form a TRM grid reinforced spray ECC composite. Of course, in some other embodiments, the reinforcing material sprayed by the spraying device 5 to the TRM grid after tensioning may be other materials according to specific situations and actual requirements of the materials, which is not specifically limited in this embodiment of the present invention.
The tensioning and reinforcing system of the TRM grid in the embodiment of the present invention has the same technical effects as the tensioning device of the TRM grid in the above embodiment, and the details are not described herein.
The embodiment of the invention also provides a tensioning and reinforcing method of the TRM grating, which is realized based on the tensioning and reinforcing system of the TRM grating in the embodiment, and the method comprises the following steps:
electrifying a positioning electromagnet group, and carrying out suspension positioning on the clamps 2 at two ends of the TRM grating 1 to be stretched;
then electrifying the stretching electromagnet group, and stretching the TRM grating 1 to be stretched to a preset length;
spraying a reinforcing material on the stretched TRM grid by using a spraying device 5 to form a reinforcing layer;
and forming a TRM grid reinforced injection reinforcing layer after the reinforcing layer is condensed.
To reinforce the reinforcement TRM grid, in some preferred embodiments, the reinforcement material is any one of ECC, cement, oligomer mortar, and pozzolan mortar. In other embodiments, other types of reinforcing materials can be sprayed according to actual conditions, as long as the same functions as those in the embodiments of the present invention can be achieved.
In some preferred embodiments, after the TRM grid reinforcing spray reinforcing layer is formed after the reinforcing layer is solidified, the method further comprises: and powering off the traction electromagnet, and taking down the clamps 2 at the two ends of the TRM grid reinforced injection reinforcing layer.
Referring to fig. 4-5, taking TRM grid reinforcement spray ECC composite as an example, the TRM grid reinforcement spray ECC composite is a reinforcing layer, the reinforced beam 8 is a reinforced object, that is, a beam member in civil engineering, tensioning and reinforcing are performed on the surface of the reinforced beam 8, the positioning electromagnet sets are firstly electrified, the clamps 2 at two ends of the TRM grid 1 to be tensioned are positioned in a suspended manner, the tensioning electromagnet sets are electrified, and the TRM grid 1 to be tensioned is tensioned to a predetermined length; at the moment, the injection device 5 injects ECC, and an ECC matrix 9 is formed after the ECC is solidified, namely the TRM grid reinforced injection ultra-high toughness cement reinforcing layer; after the completion of the power-on stretching and ECC coagulation, the power can be cut off and the clamps 2 at the two ends of the TRM grid can be taken down.
According to the tensioning and reinforcing method for the TRM grating in the embodiment of the invention, the tensioning precision of the TRM can be effectively improved by spraying the reinforcing material to the tensioned TRM grating, so that the stress level of the tensioned TRM grating is better adapted to the reinforcing materials such as ECC (error correction code) and the like, the tensioning force is accurately applied to the TRM grating by reinforcing and spraying the ECC composite material and the like, the mechanical principle is helped to fall to the ground in engineering application, and the mechanical property of the material is better utilized.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The above-described preferred features may be used in any combination without conflict with each other.
Claims (10)
1. The tensioning device of the TRM grille is characterized by comprising the TRM grille to be tensioned, wherein two ends of the TRM grille to be tensioned are respectively provided with a clamp, a positioning electromagnet group and a tensioning electromagnet group, and the clamp, the positioning electromagnet group and the tensioning electromagnet group are symmetrically arranged at two ends of the TRM grille to be tensioned; wherein,
the clamp is used for clamping the end part of the TRM grid to be tensioned, the positioning electromagnet group is configured to suspend and position the clamp after being electrified, and the clamp is positioned in the adsorption range of the positioning electromagnet group; one end of the stretching electromagnet group is fixedly connected with the positioning electromagnet group, the other end of the stretching electromagnet group is fixed on a component to be reinforced, and the stretching electromagnet group is constructed to generate stretching force on the TRM grating to be stretched after being electrified.
2. A tension device for TRM grid according to claim 1, wherein the positioning electromagnet set includes a first positioning electromagnet and a second positioning electromagnet, the first positioning electromagnet and the second positioning electromagnet are respectively located above and below the clamp, and the first positioning electromagnet and the second positioning electromagnet are arranged in a manner that the same magnetic poles are opposite to each other.
3. The tensioning device of the TRM grid according to claim 2, wherein the set of tensioning electromagnets includes a traction end tensioning electromagnet and a traction end tensioning electromagnet, the set of positioning electromagnets is fixedly connected to the traction end tensioning electromagnet, and the traction end tensioning electromagnet is configured to be fixed in a preset position by a fixing device before being electrified for tensioning.
4. A tensioning device of a TRM grid according to claim 3, characterized in that the preset position is determined according to the member to be reinforced.
5. A tension device for TRM grid according to claim 3, wherein the pulling end tension electromagnet is fixed to the member to be reinforced by a fabricated bracket.
6. A tension device of TRM grid according to claim 3, wherein the positioning electromagnet group and the pulled end tension electromagnet are fixedly connected by a bracket.
7. The TRM grid tensioning device according to claim 1, wherein the clamp is an iron clamp, and the clamp comprises two iron plates and a bolt, the two iron plates are respectively located above and below the TRM grid to be tensioned, and the two iron plates clamp the TRM grid to be tensioned through the bolt.
8. A tensioned reinforcement system for a TRM grid comprising: a spray device and a tensioning device of the TRM grid according to any one of claims 1 to 7, the spray device being configured to spray a reinforcement material to the tensioned TRM grid to form a reinforcement layer on the tensioned TRM grid.
9. A tension reinforcing method for TRM grids, which is implemented based on the tension reinforcing system for TRM grids of claim 8, and which includes:
electrifying a positioning electromagnet group, and carrying out suspension positioning on the clamps at two ends of the TRM grating to be stretched;
then electrifying the stretching electromagnet group, and stretching the TRM grating to be stretched to a preset length;
spraying a reinforcing material on the tensioned TRM grating by using a spraying device to form a reinforcing layer;
and forming a TRM grid reinforced injection reinforcing layer after the reinforcing layer is condensed.
10. A method of tension-reinforcing a TRM grid according to claim 9, wherein the reinforcing material is any one of ECC, cement, oligomer mortar and pozzolan mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210472403.0A CN114941449B (en) | 2022-04-29 | 2022-04-29 | Tensioning device, tensioning and reinforcing system and method for TRM (Top gas insulated switchgear) grating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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