CN107939063B - Prestress tensioning machine for reinforcing carbon fiber cloth by concrete member - Google Patents
Prestress tensioning machine for reinforcing carbon fiber cloth by concrete member Download PDFInfo
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- CN107939063B CN107939063B CN201711272470.3A CN201711272470A CN107939063B CN 107939063 B CN107939063 B CN 107939063B CN 201711272470 A CN201711272470 A CN 201711272470A CN 107939063 B CN107939063 B CN 107939063B
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- carbon fiber
- fiber cloth
- tensioning
- concrete member
- quantifying mechanism
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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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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a prestress tensioning machine for reinforcing carbon fiber cloth by a concrete member, which comprises a quantifying mechanism, wherein the quantifying mechanism comprises a lockable telescopic device, and two ends of the quantifying mechanism are provided with extrusion devices capable of moving and locking the quantifying mechanism; the fixing bracket is vertically fixed on the upper surface of the quantifying mechanism and is used for fixing the carbon fiber cloth roll; the tensioning mechanism comprises a driving device and a sliding clamping device which are arranged from outside to inside along the length direction of the quantifying mechanism, the sliding clamping device comprises a guide slideway fixed on the quantifying mechanism and a tensioning sliding block which is arranged in the guide slideway and matched with the guide slideway, a gap for enabling carbon fiber cloth to pass through is formed at the lower end of the tensioning sliding block, a fixing plate capable of moving and locking the fixing plate is arranged at the inner side of the tensioning sliding block, and the driving end of the driving device is in contact with the outer side of the tensioning sliding block. The stretching machine has strong applicability, is suitable for reinforcing carbon fiber cloth on various concrete members, and has accurate stretching control and small prestress loss.
Description
Technical Field
The invention relates to the field of concrete reinforcing equipment, in particular to a prestress tensioning machine tool for reinforcing carbon fiber cloth by a concrete member.
Background
However, as the service life of the building is prolonged, many diseases such as concrete carbonization, steel bar corrosion and the like can occur, so that the bearing capacity of the building is reduced, and the earthquake resistance is degraded. Carbon fiber reinforced composite materials (CFRP) have been widely used for reinforcing building structures in recent years due to the characteristics of light weight and high strength, wherein carbon fiber cloth is usually adhered to the surface of a concrete structure to improve the bearing capacity of the concrete structure, however, a carbon fiber cloth adhering method is adopted, grooves are only polished on the surface of the concrete, and then the carbon fiber cloth is adhered to the polished surface of a concrete member through an adhesive. For example, the prior Chinese patent publication No. CN101713253A discloses a prestress carbon fiber cloth reinforcement tensioning machine, and the carbon fiber cloth is prestressed and adhered on a concrete member, so that the carbon fiber cloth can be firmly adhered, but the carbon fiber cloth reinforcement tensioning machine is limited in that the carbon fiber cloth is only suitable for adhering the surface of a concrete beam with an end beam, and cannot be used for adhering the positions of a cross beam, a wall surface, the ground and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing a prestress tensioning machine tool for reinforcing carbon fiber cloth of a concrete member, which has strong applicability, is suitable for reinforcing carbon fiber cloth of various concrete members, and has accurate tensioning control and small prestress loss.
In order to solve the technical problems, the invention adopts the following technical scheme:
a prestressing force stretch-draw machines for concrete member consolidates carbon fiber cloth, its characterized in that: comprises a fixed bracket for fixing the carbon fiber cloth roll, a quantitative mechanism and a tensioning machine;
the quantitative mechanism comprises a lockable telescopic device, the telescopic device is horizontally arranged, the width of the telescopic device is larger than that of the carbon fiber cloth, and two ends of the quantitative mechanism are provided with extrusion devices capable of moving and locking the telescopic device;
the fixed bracket is vertically fixed on the upper surface of the quantifying mechanism, two ends of the carbon fiber cloth roll scroll are fixed on the fixed bracket through a rotary bearing and can rotate along the axis of the carbon fiber cloth roll, and the axis of the carbon fiber cloth roll is perpendicular to the length direction of the quantifying mechanism;
the stretching mechanism comprises a driving device and a sliding clamping device which are arranged from outside to inside along the length direction of the quantifying mechanism, the sliding clamping device comprises a guide slideway fixed on the quantifying mechanism and a stretching slide block which is arranged in the guide slideway and matched with the guide slideway, the guide slideway is provided with four right-angle structures, the lower end of the stretching slide block is provided with a gap for allowing carbon fiber cloth to pass through, the inner side of the stretching slide block is provided with a fixing plate which can move and lock the carbon fiber cloth, the length of the fixing plate is greater than the width of the carbon fiber cloth, the driving device comprises a supporting frame fixed on the quantifying mechanism and a driver movably arranged above the supporting frame, the driving end of the driver is in contact with the outer side of the stretching slide block, and the supporting frame is also provided with a gap for allowing the carbon fiber cloth to pass through and extend to the end part of the quantifying mechanism.
The further technical proposal is that: the telescopic device comprises at least two groups of telescopic rods which are arranged at intervals and in parallel, each telescopic rod comprises a plurality of coaxial sleeved tubular structures, a plurality of locking perforations are axially formed in each tubular structure, two adjacent tubular structures penetrate through the corresponding locking perforations through first bolts to be locked, and connecting plates which are rectangular with the telescopic rods are fixed at two ends of the telescopic device.
The further technical proposal is that: the diameters of the two ends of the telescopic rod are the same, and the diameter of the end part is the maximum diameter of the telescopic rod.
The further technical proposal is that: the extrusion device comprises an extrusion plate, the length of the extrusion plate is larger than the width of the carbon fiber cloth, and two ends of the extrusion plate are in threaded connection with the telescopic device through second bolts.
The further technical proposal is that: and two ends of the fixing plate are in threaded connection with the tensioning sliding block through third bolts.
The further technical proposal is that: the guide slide way comprises two guide plates which are of C-shaped structures and are oppositely arranged front and back.
The further technical proposal is that: the bottom of the guide slideway is fixed with a rotatable ball, and the ball is contacted with the tensioning sliding block.
The further technical proposal is that: the support frame is including being the base of n shape structure and the baffle in the vertical base outside of locating, the baffle below is equipped with the width and is greater than the pore that crosses of carbon fiber cloth width.
The further technical proposal is that: the driver is a jack, a cylinder or an oil cylinder which are horizontally arranged.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in:
(1) The stretching machine can stretch and draw the carbon fiber cloth in a horizontal place, then cut the carbon fiber cloth and take down the carbon fiber cloth roll and the driver, so as to reduce the weight of the stretching machine, strengthen the applicability of the stretching machine, hold the frame of the stretching machine to a pasting surface, be applicable to concrete members such as beams, wall surfaces, floors, columns and the like, save time and labor, be convenient and quick, and have higher utilization value;
(2) The stretching machine is used for stretching the carbon fiber cloth on the ground, fixing the two ends of the carbon fiber cloth firmly, directly pasting the carbon fiber cloth, taking down the device after the adhesive is fixed, and ensuring small prestress loss and good stretching effect;
(3) The tensioning machine can adjust the length of the quantitative mechanism according to the length of the surface of the concrete member, and has stronger flexibility.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic top view of the structure of FIG. 1;
FIG. 3 is an enlarged schematic view of the portion A in FIG. 1;
FIG. 4 is a right side view of the slide clamping device according to the present invention;
fig. 5 is a schematic structural view of the support frame according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present invention based on only the embodiments of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1 to 4, a prestress tensioning machine for reinforcing carbon fiber cloth by a concrete member includes a fixing bracket 21 for fixing a carbon fiber cloth roll 100, a quantitative mechanism, and a tensioning machine.
The quantitative mechanism is used for fixing the carbon fiber cloth and comprises a telescopic device capable of being locked, the length of the telescopic device is determined according to the length of a concrete member to be pasted with the carbon fiber cloth, the telescopic device is horizontally arranged, the width of the telescopic device is larger than that of the carbon fiber cloth 101, and two ends of the quantitative mechanism are provided with extrusion devices capable of moving towards the telescopic device and being locked;
the fixed bracket 21 is vertically fixed on the upper surface of the quantifying mechanism, two ends of the scroll of the carbon fiber cloth roll 100 are fixed on the fixed bracket 21 through the rotary bearing 22 and can rotate along the axis of the carbon fiber cloth roll 100, the axis of the carbon fiber cloth roll 100 is vertical to the length direction of the quantifying mechanism, and carbon fiber cloth 101 with a certain length is released through pulling;
the tensioning mechanism comprises a driving device and a sliding clamping device which are arranged from outside to inside along the length direction of the quantifying mechanism, the sliding clamping device comprises a guide slideway 31 fixed on the quantifying mechanism and a tensioning slide block 32 which is arranged in the guide slideway 31 and matched with the guide slideway, the guide slideway 31 is provided with four right-angle structures, the lower end of the tensioning slide block 32 is provided with a gap for allowing a carbon fiber cloth 101 to pass through, the inner side of the tensioning slide block 32 is provided with a fixing plate 33 which can move towards the tensioning slide block and lock, the length of the fixing plate 33 is larger than the width of the carbon fiber cloth 101, the driving device comprises a supporting frame 34 fixed on the quantifying mechanism and a driver 35 movably arranged above the supporting frame 34, the driving end of the driver 35 is in contact with the outer side of the tensioning slide block 32, and the supporting frame 34 is also provided with a gap for allowing the carbon fiber cloth 101 to pass through and extend to the end of the quantifying mechanism. The stretching machine is used when:
(1) Adjusting the length of the telescopic device and locking by measuring the length of the concrete member to be reinforced;
(2) The carbon fiber cloth roll 100 is arranged on the fixed support 21, the movable end of the carbon fiber cloth roll 100 is led out, passes through a gap between the tensioning sliding block 32 and the fixed plate 33, extends to a position between the end face of the telescopic device close to one end and the extrusion device through the bottom of the driving device, then winds to a position between the end face of the telescopic device at the other end and the extrusion device through the bottom of the telescopic device, locks the extrusion device at the end, and locks the initial end of the carbon fiber cloth 101;
(3) The fixing plate 33 is locked with the tensioning sliding block 32, so that the other end of the led-out carbon fiber cloth 101 is fixed, and the new carbon fiber cloth 101 is prevented from being pulled out;
(4) Starting the driver 35 to enable the driver to inwards squeeze the stretching slide block 32, so that the distance between the two ends of the carbon fiber cloth 101 is increased, and prestress is generated;
(5) After the position of the stretching slide block 32 is adjusted, locking the extrusion device at the other end, namely locking the extrusion devices at the two ends of the telescopic device, and fixing the carbon fiber cloth 101 paved below the telescopic device below the quantitative mechanism;
(6) Cutting off redundant carbon fiber cloth 101 outside the quantitative mechanism;
(7) Removing the driver 35 and the carbon fiber cloth roll 100 to reduce the weight of the stretching machine, and then holding the quantifying mechanism to a pasting position for pasting;
(8) Curing for a proper time, unloading the extrusion devices at the two ends, taking down the quantitative mechanism, and cutting off the redundant carbon fiber cloth 101.
The stretching machine can stretch and draw the carbon fiber cloth in a horizontal place, then cut the carbon fiber cloth and take down the carbon fiber cloth roll 100 and the driver 35, so as to reduce the weight of the stretching machine, strengthen the applicability of the stretching machine, hold the frame of the stretching machine to a pasting surface, be applicable to concrete members such as beams, wall surfaces, floors, columns and the like, save time and labor, be convenient and quick, and have higher utilization value; the stretching machine is used for stretching the carbon fiber cloth on the ground, fixing the two ends of the carbon fiber cloth firmly, directly pasting the carbon fiber cloth, taking down the device after the adhesive is fixed, and ensuring small prestress loss and good stretching effect; the tensioning machine can adjust the length of the quantitative mechanism according to the length of the surface of the concrete member, and has stronger flexibility.
The specific telescopic device comprises at least two groups of telescopic rods 11 which are arranged at intervals and in parallel, each telescopic rod 11 comprises a plurality of coaxial sleeved tubular structures, a plurality of locking through holes 12 are axially formed in each tubular structure, two adjacent tubular structures penetrate through the corresponding locking through holes 12 through first bolts 13 to be locked, two ends of the telescopic device are fixed with connecting plates 16 which are enclosed with the telescopic rods 11 to form a rectangle, and the connecting plates 16 can strengthen the strength of the telescopic device on one hand and attach and fix the carbon fiber cloth 101 with the extrusion device on the other hand. In order to keep the carbon fiber cloth laid under the telescopic device horizontal, the diameters of the two ends of the telescopic rod 11 are the same, the diameters of the end parts are the maximum diameter of the telescopic rod 11, the carbon fiber cloth 101 in the middle part can be hollowed out and compacted when being convenient to paste, as shown in fig. 3, the diameters of the tubular structures are sequentially reduced, and therefore, a section of supplement part 15 with the same diameter as that of the tubular structure at the head end is additionally arranged on the tubular structure at the tail end.
The device is specifically provided with a locking structure, wherein the extruding device comprises an extruding plate 17, the length of the extruding plate 17 is larger than the width of the carbon fiber cloth, and two ends of the extruding plate 17 are in threaded connection with the telescopic device through second bolts 18. The two ends of the fixing plate 33 are connected with the tensioning slide 32 through third bolts 37 in a threaded manner.
As shown in fig. 4, the guide chute 31 includes two guide plates 311 having a C-shaped structure and disposed opposite to each other in front and rear. A rotatable ball 312 is fixed to the bottom of the guide rail 31, and the ball 312 is in contact with the tensioning slide 32. The tensioning slide 32 has a certain thickness, and can keep stable movement under the action of the extension part above the guiding slide 31, and in order to reduce friction between the tensioning slide 32 and the guiding slide 31, a ball 312 is provided, so as to facilitate movement of the tensioning slide 32.
As shown in fig. 5, the support 34 includes a base with an n-shaped structure and a baffle 36 vertically arranged outside the base, and a through hole 361 with a width larger than that of the carbon fiber cloth is arranged below the baffle 36.
The driver 35 is a structure with telescopic function, such as a jack, a cylinder or an oil cylinder, which are horizontally arranged.
The foregoing is only a preferred embodiment of the present invention, and any and all simple modifications, variations and equivalents of the present invention will fall within the scope of the present invention.
Claims (9)
1. A prestressing force stretch-draw machines for concrete member consolidates carbon fiber cloth, its characterized in that: comprises a fixed bracket (21) for fixing a carbon fiber cloth roll (100), a quantitative mechanism and a tensioning machine;
the quantitative mechanism comprises a lockable telescopic device, the telescopic device is horizontally arranged, the width of the telescopic device is larger than that of the carbon fiber cloth (101), and two ends of the quantitative mechanism are provided with extrusion devices capable of moving and locking the telescopic device;
the fixing support (21) is vertically fixed on the upper surface of the quantifying mechanism, two ends of the scroll of the carbon fiber cloth roll (100) are fixed on the fixing support (21) through the rotary bearing (22) and can rotate along the axis of the carbon fiber cloth roll (100), and the axis of the carbon fiber cloth roll (100) is perpendicular to the length direction of the quantifying mechanism;
the tensioning mechanism comprises a driving device and a sliding clamping device which are arranged from outside to inside along the length direction of the quantifying mechanism, the sliding clamping device comprises a guide slideway (31) fixed on the quantifying mechanism and a tensioning slide block (32) which is arranged in the guide slideway (31) and matched with the guide slideway, the guide slideway (31) is provided with four right-angle structures, the lower end of the tensioning slide block (32) is provided with a gap for allowing a carbon fiber cloth (101) to pass through, the inner side of the tensioning slide block (32) is provided with a fixing plate (33) capable of moving and locking the fixing plate, the length of the fixing plate (33) is larger than the width of the carbon fiber cloth (101), the driving device comprises a supporting frame (34) fixed on the quantifying mechanism and a driver (35) movably arranged above the supporting frame (34), the driving end of the driver (35) is in contact with the outer side of the tensioning slide block (32), and the gap for allowing the carbon fiber cloth (101) to pass through and extend to the end of the quantifying mechanism is also arranged on the supporting frame (34).
2. The prestress tensioning machine for reinforcing carbon fiber cloth of concrete member according to claim 1, wherein: the telescopic device comprises at least two groups of telescopic rods (11) which are arranged at intervals and in parallel, each telescopic rod (11) comprises a plurality of coaxial sleeved tubular structures, a plurality of locking through holes (12) are axially formed in each tubular structure, two adjacent tubular structures are locked through the corresponding locking through holes (12) through first bolts (13), and connecting plates (16) which are rectangular in shape and are surrounded by the telescopic rods (11) are fixed at two ends of the telescopic device.
3. The prestress tensioning machine for reinforcing carbon fiber cloth of concrete member according to claim 2, wherein: the diameters of the two ends of the telescopic rod (11) are the same, and the diameters of the end parts are the maximum diameter of the telescopic rod (11).
4. The prestress tensioning machine for reinforcing carbon fiber cloth of concrete member according to claim 1, wherein: the extrusion device comprises an extrusion plate (17), the length of the extrusion plate (17) is larger than the width of the carbon fiber cloth, and two ends of the extrusion plate (17) are in threaded connection with the telescopic device through second bolts (18).
5. The prestress tensioning machine for reinforcing carbon fiber cloth of concrete member according to claim 1, wherein: the two ends of the fixing plate (33) are connected with the tensioning sliding block (32) through third bolts (37) in a threaded mode.
6. The prestress tensioning machine for reinforcing carbon fiber cloth of concrete member according to claim 1, wherein: the guide slide way (31) comprises two guide plates (311) which are of a C-shaped structure and are oppositely arranged front and back.
7. The prestress tensioning machine for reinforcing carbon fiber cloth of concrete member according to claim 1, wherein: the bottom of the guide slideway (31) is fixed with a rotatable ball (312), and the ball (312) is contacted with the tensioning sliding block (32).
8. The prestress tensioning machine for reinforcing carbon fiber cloth of concrete member according to claim 1, wherein: the support frame (34) comprises a base with an n-shaped structure and a baffle plate (36) vertically arranged on the outer side of the base, and a through hole (361) with the width larger than that of the carbon fiber cloth is arranged below the baffle plate (36).
9. The prestress tensioning machine for reinforcing carbon fiber cloth of concrete member according to claim 1, wherein: the driver (35) is a jack, a cylinder or an oil cylinder which are horizontally arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711272470.3A CN107939063B (en) | 2017-12-06 | 2017-12-06 | Prestress tensioning machine for reinforcing carbon fiber cloth by concrete member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711272470.3A CN107939063B (en) | 2017-12-06 | 2017-12-06 | Prestress tensioning machine for reinforcing carbon fiber cloth by concrete member |
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| Publication Number | Publication Date |
|---|---|
| CN107939063A CN107939063A (en) | 2018-04-20 |
| CN107939063B true CN107939063B (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711272470.3A Active CN107939063B (en) | 2017-12-06 | 2017-12-06 | Prestress tensioning machine for reinforcing carbon fiber cloth by concrete member |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112681793B (en) * | 2020-12-21 | 2022-02-11 | 常州兆庚新材料有限公司 | Carbon fiber cloth's tensioning equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000220254A (en) * | 1999-02-03 | 2000-08-08 | Sumitomo Constr Co Ltd | Tension anchoring structure |
| CN2712994Y (en) * | 2004-05-21 | 2005-07-27 | 清华大学 | Carbon fiber cloth prestressed tensioner |
| CN1702270A (en) * | 2005-06-15 | 2005-11-30 | 尚守平 | Prestressed tensioning device for fiber board |
| CN205775861U (en) * | 2016-05-23 | 2016-12-07 | 中交第一公路工程局有限公司 | A kind of reaction frame for steel wire rope prestressed anchor cable stretching |
| CN207568229U (en) * | 2017-12-06 | 2018-07-03 | 中国电建集团北京勘测设计研究院有限公司 | A kind of prestressed stretch-draw equipment for concrete component reinforcing carbon cloth |
-
2017
- 2017-12-06 CN CN201711272470.3A patent/CN107939063B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000220254A (en) * | 1999-02-03 | 2000-08-08 | Sumitomo Constr Co Ltd | Tension anchoring structure |
| CN2712994Y (en) * | 2004-05-21 | 2005-07-27 | 清华大学 | Carbon fiber cloth prestressed tensioner |
| CN1702270A (en) * | 2005-06-15 | 2005-11-30 | 尚守平 | Prestressed tensioning device for fiber board |
| CN205775861U (en) * | 2016-05-23 | 2016-12-07 | 中交第一公路工程局有限公司 | A kind of reaction frame for steel wire rope prestressed anchor cable stretching |
| CN207568229U (en) * | 2017-12-06 | 2018-07-03 | 中国电建集团北京勘测设计研究院有限公司 | A kind of prestressed stretch-draw equipment for concrete component reinforcing carbon cloth |
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| CN107939063A (en) | 2018-04-20 |
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