CN114753564B - Combined multifunctional auxiliary part of grouting sleeve for steel bar connection and combined use method - Google Patents
Combined multifunctional auxiliary part of grouting sleeve for steel bar connection and combined use method Download PDFInfo
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- CN114753564B CN114753564B CN202110038182.1A CN202110038182A CN114753564B CN 114753564 B CN114753564 B CN 114753564B CN 202110038182 A CN202110038182 A CN 202110038182A CN 114753564 B CN114753564 B CN 114753564B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 27
- 239000010959 steel Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 53
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 8
- 239000011440 grout Substances 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 229910000639 Spring steel Inorganic materials 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 10
- 238000001125 extrusion Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a combined multifunctional auxiliary of a grouting sleeve for steel bar connection and a combined use method, comprising a rubber plug, a middle column part and a rubber column which are connected in a combined manner; a metal bushing is arranged in one end, close to the middle column part, of the rubber plug, and a plurality of buckles are arranged on the exposed part of the metal bushing and are sleeved in the first end part of the middle column part in a clamping manner; a boss is arranged at one end of the rubber column, which is close to the middle column part, and is connected in the second end part of the middle column part through threads; the end of the rubber column is sleeved with a positioning screw rod with a compression check ring, the positioning screw rod penetrates through the rubber column and the boss and stretches into the middle column part, and the exposed part of the positioning screw rod is detachably sleeved with a gasket and a locking nut; the rubber plug can be replaced at any time in the splitting structure, and the rubber plug is convenient to install and easy to split.
Description
Technical Field
The invention relates to the technical field of grouting sleeves, in particular to a combined multifunctional auxiliary of a grouting sleeve for steel bar connection and a combined use method thereof.
Background
The grouting sleeve for the steel bar connection is used as an important part for the steel bar connection in the field construction process, and is a part for connecting deformed steel bars in adjacent reinforced concrete building members. Along with the development of the assembled building, the application of the assembled building is more and more mature, the problem that the assembled on-site spliced steel bar connection is inconvenient is solved by the grouting sleeve, the on-site assembly construction of the building industry is possible by using the grouting sleeve, the building construction efficiency is greatly improved, and the time, the manpower and the site cost are saved.
In both prefabricated member factories and field assembly, the sealing rubber plugs and the rubber columns are indispensable, the positioning of the grouting sleeve on the prefabricated template end plate is realized through the rubber columns, the sealing effect is achieved, and grouting materials are prevented from entering the sleeve in the casting process. The sealing rubber plug realizes the function of preventing grouting material from entering the sleeve along the inner wall of the sleeve and the outer wall of the steel bar, thereby playing a sealing role. The sealing rubber plug cannot be taken out, can be permanently left in a building, is extremely wasteful, and meanwhile, the rubber plug permanently retained in the grouting sleeve can cause the defect of discontinuous inside the building material.
There are also integral removable rubber seals, such as chinese patent application publication No. CN111945959a, which discloses in 2020 a multifunctional accessory for machining a full grouting sleeve and a method of assembling and disassembling the same, wherein the sealing accessory has a middle cylinder, a first end plug portion and a second end plug portion provided as an integral structure; the multifunctional auxiliary is simple in assembling and disassembling method, and can be taken out from the grouting sleeve integrally, but the multifunctional auxiliary is a rubber part integrally, has the problem of insufficient supporting strength, is easy to clamp during assembling and taking out, and is easy to deform when being extruded after the reinforcing steel bars are inserted; in addition, this first end plug portion often can rub with the telescopic inner wall of grout in loading and unloading process, is easy wearing and tearing spare, wear cycle weak point to this first end plug portion, middle part cylinder and second end plug portion's wearing and tearing degree and cycle are obvious different, because it is difficult to change alone that it is integral connection, whole change again can produce the waste.
Disclosure of Invention
The invention aims at solving the problems existing in the prior art and provides a combined type multifunctional auxiliary part of a grouting sleeve for steel bar connection and a combined use method thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a combined multifunctional auxiliary of a grouting sleeve for steel bar connection comprises a rubber plug, a middle column part and a rubber column which are connected in a combined manner; a metal bushing is arranged in one end, close to the middle column part, of the rubber plug, and a plurality of buckles are arranged on the exposed part of the metal bushing and are sleeved in the first end part of the middle column part in a clamping manner; a boss is arranged at one end of the rubber column, which is close to the middle column part, and is connected in the second end part of the middle column part through threads; the end cover at rubber post place is equipped with the locating screw rod that area compresses tightly the retaining ring, the locating screw rod runs through the rubber post with the boss stretches into the inside of middle cylinder part, the part detachable cover that the locating screw rod exposes is equipped with gasket and lock nut.
The multifunctional auxiliary is characterized in that the rubber plug, the middle column body part and the rubber column are split into a combined type, so that the multifunctional auxiliary has the following advantages: the rubber plug is an easily worn part, so that the wear period is short, and the rubber plug can be replaced at any time in a split structure; the middle column body part is made of steel and is a permanent use part, so that replacement can be omitted, and the cost is saved; the metal bushing is pre-buried in the rubber plug to play a role of framework support, so that the rubber plug and the middle column body are convenient to install and easy to disassemble; after the extrusion amount of the rubber column is calculated, the rubber column can be accurately positioned through the positioning screw rod, excessive extrusion can not be carried out on the rubber column, and the service life of the rubber column is prolonged.
The split combined structure has the advantages that the manufacturing requirement on the grouting sleeve is reduced, special rolling is not needed at the end part of the grouting sleeve slurry outlet, and the production difficulty of the grouting sleeve can be reduced; compared with the existing integral sealing auxiliary, the multifunctional auxiliary has better supporting strength, is not easy to be blocked when being put in and taken out, and is easy to be assembled and disassembled. In addition, after the reinforcing steel bars are inserted, the middle column part of the multifunctional auxiliary is extruded, cannot be deformed, and has enough strength and rigidity.
Because the metal bush is provided with the buckle, the limit connection between the metal bush and the first end part can be released by pressing or stirring the buckle, the rubber plug can be removed by pulling upwards, and the metal bush in the rubber plug can be reused after being completely removed if the rubber plug is seriously worn and directly replaced; compared with the rubber plug, the rubber column is less in abrasion, can be repeatedly used for a long time, and can be singly replaced if damaged.
Further, the metal bushing is in a column shape and is provided with a clamping part and an embedding part, the clamping part is sleeved on the first end part, and the embedding part is embedded in the rubber plug; the embedded part is circumferentially provided with a plurality of through holes in an array manner, and the periphery of the tail end of the embedded part is provided with a plurality of outward-turned radial spokes; the method comprises the steps of carrying out a first treatment on the surface of the The through holes and the radial spokes firmly combine the metal bushing and the rubber plug; the clamping part is circumferentially provided with a plurality of openings, the opening is provided with the buckle, and the circumference of the first end part is provided with a plurality of clamping grooves which are connected with the buckle in a matching way.
The through holes of the array can lighten the weight of the metal bushing, reduce the use of metal materials, and are also beneficial to being compounded with the rubber plug to form a compact embedded structure, rubber can flow among the through holes when the rubber plug is formed, the through holes are fully filled with rubber, after the rubber in the through holes and the rubber on the body are solidified and formed into a whole, the rubber passing through the through holes radially can limit and pull the metal bushing, so that the metal bushing cannot fall off before the rubber plug is worn and damaged; meanwhile, the radial spokes of one circle in the circumferential direction are arranged, so that the axial acting force between the metal bushing and the rubber plug can be further improved, and the axial acting force of the rubber plug and the metal bushing is ensured in the axial drawing and pressing processes, so that the stability is better; moreover, such an arrangement does not affect the deformation requirements of radial expansion, axial compression of the rubber stopper.
The buckle with the cooperation of draw-in groove pushes down can restrict with connect the rubber buffer, but does not influence the deformation of rubber buffer, moreover the draw-in groove runs through the perisporium of first tip, the joint is relieved in the dismantlement of being convenient for.
Further, the through holes are provided with a plurality of circles at equal intervals, and the radial spokes are distributed in a central symmetry mode and are arranged at the edges of the areas between the adjacent through holes. The arrangement ensures that the stress is balanced and the stability is better.
Further, the buckles are a plurality of arranged in a central symmetry mode, and the buckles are arranged in an outward inclined mode.
Further, the metal bushing is a connecting piece made of stainless spring steel, and the middle column body part is a hollow steel piece. The metal bushing is made of stainless spring steel, so that the metal bushing has elastic deformation capacity, and particularly the clamping part has good elasticity and is convenient to be matched and connected with the clamping groove; the metal bushing is made of stainless steel with strength and elasticity.
Further, a step for clamping is arranged on the circumference of the first end portion. The second end part is connected with the boss through threads, and a spigot is arranged at the thread withdrawal position of the second end part; the boss can be limited, and axial displacement of the boss is avoided after locking.
Further, the outer diameter of the rubber plug is set to be variable, the outer diameter of one end, which is close to the metal bushing, is smaller than the outer diameter of the other end and larger than the outer diameter of the middle cylinder part, and the inner diameter of the rubber plug is smaller than the inner diameter of the middle cylinder part. This arrangement is more advantageous in terms of deformation of the rubber stopper while ensuring that the rubber stopper is always positioned above the first end portion, and the end circumferential surface of the first end portion abuts against the end circumferential surface of the rubber stopper to form a support.
Further, the inner diameter of the rubber column is smaller than the inner diameter of the middle column part, the outer diameter of the rubber column is larger than the outer diameter of the middle column part, the end part of the rubber column is abutted with the second end part, and the boss is positioned in the second end part; the inner diameters of the boss and the rubber column are smaller than the outer diameter of the pressing check ring. And similarly, the arrangement is favorable for the deformation of the rubber column, and simultaneously ensures that the rubber column is always positioned below the second end part, the end circumferential surface of the second end part and the end circumferential surface of the boss are abutted with the end circumferential surface of the rubber column to form a support, and the support surface of the support is enlarged, so that the extrusion deformation of the rubber column is facilitated.
Further, the rubber plug, the middle column part, the rubber column and the positioning screw are coaxially arranged; the positioning screw rod comprises a threaded portion and a polish rod portion, the side, close to the threaded portion, of the polish rod portion is provided with the pressing check ring, and the outer diameter of the polish rod portion is larger than that of the threaded portion and is matched with the inner diameter of the rubber column.
By adopting the arrangement of the structure, the positioning screw rod can tighten the multifunctional auxiliary, the threaded part can not contact with the inner peripheral wall of the rubber column, and the abrasion of the rubber column is reduced.
Further, the multifunctional auxiliary is arranged in a grouting sleeve, the grouting sleeve is provided with a grouting opening and a grouting opening, the middle cylinder part is sleeved in the grouting sleeve and keeps a gap with the inner wall of the grouting sleeve, the first end part is positioned at one side of the grouting opening, and the second end part is positioned at one side of the grouting opening; the lower tip of locating screw rod is followed grout telescopic lower extreme stretches out, first tip inserts the reinforcing bar, the reinforcing bar with locating screw rod butt location, the outer tip of rubber buffer with grout telescopic tip parallel and level, the outer peripheral wall of rubber buffer with grout telescopic inner peripheral wall closely laminates, the outer tip of rubber column with second grout telescopic tip parallel and level, the outer peripheral wall of rubber column with grout telescopic inner peripheral wall closely laminates.
A combined use method of a combined type multifunctional auxiliary part of a grouting sleeve for steel bar connection comprises an installation step and a disassembly step;
the mounting steps are as follows: embedding a metal bushing with a buckle in a rubber plug, and forming for later use; preparing a hollow middle column part, and arranging clamping areas at a first end part and a second end part of the middle column part; the metal bushing of the rubber plug is sleeved on the first end part, and the clamping buckle is clamped and connected with the clamping groove of the first end part;
the middle column part and the rubber plug are sleeved in the grouting sleeve together, the rubber plug and the first end part are positioned at one side of a grout outlet of the grouting sleeve, a positioning screw rod, a boss and a rubber column are sequentially inserted from the other end of the grouting sleeve, the part of the positioning screw rod with a compression retainer ring is sleeved in the middle column part, the boss is clamped at the second end part, the rubber column is abutted to the second end part and positioned in the grouting sleeve, the grouting sleeve is integrally installed on a prefabricated member template end plate, a gasket and a locking nut are sleeved on the exposed threaded part of the positioning screw rod, and the ends of the grouting sleeve and the rubber column are tightly attached to the prefabricated member template end plate after locking;
inserting the steel bar into the middle column part from the rubber plug and the first end part and abutting against the positioning screw rod, and pressing the steel bar, wherein the end part of the rubber plug is flush with the end part of the grouting sleeve; grouting the outside of the grouting sleeve after the installation of the reinforcing steel bars is completed to finish the casting of the whole prefabricated part;
the disassembling step is as follows: after the whole prefabricated part is poured and solidified, loosening the locking nut, sequentially detaching the locking nut and the gasket from the lower part of the prefabricated part template end plate, pulling the positioning screw rod towards the outside of the grouting sleeve after detaching the prefabricated part template end plate, and extracting the rubber column, the boss and the middle column part together with the rubber plug from the grouting sleeve under the action of the pressing retainer ring by the positioning screw rod.
The multifunctional auxiliary part with the structure is matched with the grouting sleeve for use, has good flexibility and sealing performance, can prevent slurry outside the grouting sleeve from entering the grouting sleeve in the prefabrication assembly process, and can be integrally taken out of the multifunctional auxiliary part from the grouting sleeve after the prefabrication assembly is completed, so that the recycling of the rubber plug, the middle column part, the rubber column, the positioning screw, the locking nut and the gasket is realized, the cost is saved for customers, and a large amount of resources are saved for society.
Compared with the prior art, the invention has the beneficial effects that: 1. the multifunctional auxiliary is characterized in that the rubber plug, the middle column body part and the rubber column are split into a combined type, so that the multifunctional auxiliary has the following advantages: the rubber plug is an easily worn part, so that the wear period is short, and the rubber plug can be replaced at any time in a split structure; the middle column body part is made of steel and is a permanent use part, so that replacement can be omitted, and the cost is saved; the metal bushing is embedded in the rubber plug to play a role of supporting a framework, and the rubber plug and the middle column body are convenient to install and easy to disassemble due to the buckle design; after the extrusion amount of the rubber column is calculated, the rubber column can be accurately positioned through the positioning screw rod, excessive extrusion of the rubber column is avoided, and the service life of the rubber column is prolonged; 2. the split combined structure has the advantages that the manufacturing requirement on the grouting sleeve is reduced, special rolling is not needed at the end part of the grouting sleeve slurry outlet, and the production difficulty of the grouting sleeve can be reduced; compared with the existing integral sealing auxiliary, the multifunctional auxiliary has better supporting strength, is not easy to be blocked during loading and unloading, and is easy to be assembled and disassembled; 3. after the steel bar is inserted, the middle column part of the multifunctional auxiliary is extruded and cannot be deformed, and the multifunctional auxiliary has enough strength and rigidity; 4. the metal bushing adopting the structure has the advantages of light weight, less material consumption, good connection strength, high stability, no influence on the deformation requirements of radial expansion and axial compression of the rubber plug, and easy clamping and disassembly.
Drawings
Fig. 1 is an overall schematic view of a combined type multifunctional auxiliary for a grouting sleeve for reinforcing steel bar connection according to the present invention;
FIG. 2 is an enlarged schematic view of the structure A in FIG. 1;
FIG. 3 is a schematic view of the rubber stopper of the present invention connected to a metal bushing;
FIG. 4 is a schematic perspective view of a metal bushing according to the present invention;
FIG. 5 is a schematic view showing a state before the multifunctional auxiliary member of the present invention is installed in the grouting sleeve;
FIG. 6 is a schematic view showing a state of the multifunctional auxiliary member of the present invention after being mounted in the grouting sleeve;
fig. 7 is a schematic view showing a state in which the multifunctional auxiliary of the present invention is installed in a grouting sleeve after installing reinforcing bars;
in the figure: 1. a rubber stopper; 2. a middle column portion; 201. a first end; 202. a second end; 203. a clamping groove; 3. a rubber column; 4. a metal bushing; 401. an embedding part; 402. an engagement portion; 403. a through hole; 404. radial spokes; 405. an opening; 5. a buckle; 6. a boss; 7. positioning a screw; 8. compressing the retainer ring; 9. a gasket; 10. a lock nut; 11. grouting a sleeve; 12. a slurry discharge port; 13. a grouting port; 14. a preform template end plate; 15. reinforcing steel bars.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Embodiment one:
as shown in fig. 1 and 2, a combined type multifunctional auxiliary of a grouting sleeve for reinforcing bar connection comprises a rubber stopper 1, a middle column part 2 and a rubber column 3 which are combined and connected; a metal bushing 4 is arranged in one end, close to the middle column part 2, of the rubber plug 1, and a plurality of buckles 5 are arranged at the exposed part of the metal bushing 4 and are sleeved in the first end 201 of the middle column part 2 in a clamping manner; a boss 6 is arranged at one end of the rubber column 3 close to the middle column part 2, and the boss 6 is connected in the second end 202 of the middle column part 2 through threads; the end cover that rubber post 3 place is equipped with the locating screw 7 that takes to compress tightly retaining ring 8, locating screw 7 runs through rubber post 3 with boss 6 stretches into the inside of middle cylinder part 2, the partly detachable cover of locating screw 7 exposes is equipped with gasket 9 and lock nut 10.
The multifunctional auxiliary is characterized in that the rubber plug 1, the middle column part 2 and the rubber column 3 are split into a combined type, so that the multifunctional auxiliary has the following advantages: because the rubber plug 1 is an easily worn part, the wear period is short, and the rubber plug can be replaced at any time in a split structure; the middle column part 2 is made of steel and is a permanent use part, so that replacement can be omitted, and the cost is saved; the metal bushing 4 is pre-buried in the rubber plug 1 to play a role of framework support, so that the rubber plug 1 and the middle column part 2 are convenient to install and easy to disassemble; after the extrusion amount of the rubber column 3 is calculated, the rubber column 3 can be accurately positioned through the positioning screw 7, excessive extrusion can not be carried out on the rubber column 3, and the service life of the rubber column 3 is prolonged.
The split combined structure has the advantages that the manufacturing requirement on the grouting sleeve is reduced, special rolling is not needed at the end part of the grouting sleeve slurry outlet, and the production difficulty of the grouting sleeve can be reduced; compared with the existing integral sealing auxiliary, the multifunctional auxiliary has better supporting strength, is not easy to be blocked when being put in and taken out, and is easy to be assembled and disassembled. In addition, after the reinforcing steel bars are inserted, the middle column part of the multifunctional auxiliary is extruded, cannot be deformed, and has enough strength and rigidity.
Due to the arrangement of the buckle 5 on the metal bush 4, the limit connection between the metal bush 4 and the first end 201 can be released by pressing or stirring the buckle 5, the rubber plug 1 can be removed by pulling upwards, if the rubber plug 1 is seriously worn and directly replaced, the metal bush 4 in the rubber plug 1 is taken out, and the metal bush 4 can be reused after being completely removed; the rubber column 3 is less worn than the rubber plug 1, can be reused for a long period of time, and can be replaced alone if damaged.
Further, as shown in fig. 3 and 4, the metal bush 4 has a cylindrical shape, and has an engaging portion 402 and an embedding portion 401, the engaging portion 402 is sleeved on the first end 201, and the embedding portion 401 is embedded in the rubber plug 1; the embedded part 401 is circumferentially arrayed with a plurality of through holes 403, and the periphery of the tail end of the embedded part 401 is provided with a plurality of outward turned radial spokes 404; the engaging portion 402 is circumferentially provided with a plurality of rectangular openings 405, the openings 405 are provided with the buckles 5, and the first end 201 is circumferentially provided with a plurality of clamping grooves 203 which are in fit connection with the buckles 5.
The through holes 403 of the array can reduce the weight of the metal bush 4, reduce the use of metal materials, and also be beneficial to being compounded with the rubber plug 1 to form a compact embedded structure, when the rubber plug 1 is molded, rubber can flow between the through holes 403 to fully fill the through holes, after curing molding, the rubber in the through holes and the rubber on the body are integrated to form an integral structure of the rubber plug, and the rubber passing through the through holes 403 in the radial direction can limit and pull the metal bush 4, so that the metal bush 4 cannot fall off before the rubber plug 1 is worn and damaged; meanwhile, the radial spokes 404 which are circumferentially arranged in one circle can further improve the axial acting force between the metal bush 4 and the rubber plug 1 and the binding force between the metal bush and the rubber plug, so that the axial acting force and the binding force of the rubber plug 1 and the metal bush 4 are ensured in the axial drawing and pressing processes, and the stability is better; moreover, such an arrangement does not affect the deformation requirements of radial expansion, axial compression of the rubber stopper 1.
The cooperation of buckle 5 with draw-in groove 203 pushes down can restrict with connect rubber buffer 1, but does not influence the deformation of rubber buffer, moreover draw-in groove 203 runs through the perisporium of first end 201, the convenient dismantlement formula release block.
Further, the through holes 403 are equally spaced and provided with a plurality of circles, and the radial spokes 404 are centrally and symmetrically distributed and arranged at the edge of the area between the adjacent through holes 403. The arrangement ensures that the stress is balanced and the stability is better.
Further, the buckles 5 are a plurality of central symmetry, and the buckles 5 are inclined outwards.
Further, the metal bushing 4 is a connecting piece made of stainless spring steel, and the middle column part 2 is a hollow steel piece. The metal bush 4 is made of stainless spring steel, so that the metal bush 4 has elastic deformation capability, and particularly, the part of the buckle 5 has good elasticity, so that the metal bush is convenient to be matched and connected with the clamping groove 203.
Further, a step for engagement is provided on the circumference of the first end 201. The second end 202 is connected with the boss 6 through threads, and a spigot is arranged at the thread withdrawal position of the second end 202; the boss 6 can be limited, and axial displacement of the boss 6 is avoided after locking.
Further, the outer diameter of the rubber plug 1 is set to be variable, the outer diameter of one end close to the metal bushing 4 is smaller than the outer diameter of the other end and larger than the outer diameter of the middle cylinder part 2, and the inner diameter of the rubber plug 1 is smaller than the inner diameter of the middle cylinder part 2. This arrangement is more advantageous in terms of deformation of the rubber stopper 1, while ensuring that the rubber stopper 1 is always positioned above the first end 201, and the end circumferential surface of the first end 201 abuts against the lower end circumferential surface of the rubber stopper 1 to form a support.
Further, the inner diameter of the rubber column 3 is smaller than the inner diameter of the middle column part 2, the outer diameter is larger than the outer diameter of the middle column part 2, the end part of the rubber column 3 is abutted with the second end part 202, and the boss 6 is positioned in the second end part 202; the inner diameters of the boss 6 and the rubber column 3 are smaller than the outer diameter of the pressing retainer ring 8. In the same way, the arrangement is beneficial to the deformation of the rubber column 3, and ensures that the rubber column 3 is always positioned below the second end 202, and the peripheral surface of the lower end of the second end 202 is abutted with the peripheral surface of the upper end of the rubber column 3 to form a support.
Further, the rubber stopper 1, the middle column part 2, the rubber column 3 and the positioning screw 7 are coaxially arranged; the positioning screw 7 comprises a threaded portion and a polish rod portion, the side, close to the threaded portion, of the polish rod portion is provided with the pressing retainer ring 8, and the outer diameter of the polish rod portion is larger than that of the threaded portion and is matched with the inner diameter of the rubber column 3.
With this arrangement, the set screw 7 can tighten the present multifunctional accessory without the threaded portion coming into contact with the inner peripheral wall of the rubber column 3, reducing the wear of the rubber column 3.
Embodiment two:
the present embodiment provides a method for using the multifunctional auxiliary with the grouting sleeve in the first embodiment.
As shown in fig. 5, the multifunctional auxiliary is provided in a grouting sleeve 11, the grouting sleeve 11 is provided with a grouting opening 13 and a grouting opening 12, the middle column part 2 is sleeved in the grouting sleeve 11 and keeps a gap with the inner wall of the grouting sleeve 11, the first end 201 is positioned at one side of the grouting opening 12, and the second end 202 is positioned at one side of the grouting opening 13; the grouting sleeve 11 is placed on a prefabricated member template end plate 14, the lower end part of the positioning screw rod 7 extends out from the lower end of the grouting sleeve 11, and a gasket 9 and a locking nut 10 are sleeved on the exposed part of the positioning screw rod 7.
As shown in fig. 6, the lock nut 10 is locked so that the positioning screw 7 generates a downward pressure, at this time, the rubber column 3 and the rubber plug 1 are both in a compressed radial expansion and axial contraction state, and a small section of the upper end of the rubber plug 1 is exposed.
As shown in fig. 7, a reinforcing bar 15 is inserted into the first end 201, the reinforcing bar 15 is positioned in abutment with the positioning screw 7, the outer end of the rubber plug 1 is flush with the upper end of the grouting sleeve 11, the outer peripheral wall of the rubber plug 1 is tightly attached to the inner peripheral wall of the grouting sleeve 11, and at the same time, the outer end of the rubber column 3 is flush with the lower end of the grouting sleeve 11, and the outer peripheral wall of the rubber column 3 is tightly attached to the inner peripheral wall of the grouting sleeve 11.
After the pouring of the whole prefabricated part is completed and solidified, the locking nut 10 is loosened, the locking nut 10 and the gasket 9 are detached from the lower part of the prefabricated part template end plate 14 in sequence, the positioning screw 7 is pulled towards the outside of the grouting sleeve 11 after the prefabricated part template end plate 14 is detached, and the positioning screw 7 withdraws the rubber column 3, the middle column part 2 and the rubber plug 1 from the grouting sleeve 11 under the action of the pressing retainer ring 8, so that the disassembly and recovery of the multifunctional auxiliary part are completed.
After repeated use, the rubber plug 1 rubs against the inner wall of the grouting sleeve 11 when detached each time, and after the rubber plug 1 is worn, the buckle 5 is pressed to take out the rubber plug 1 from the middle cylinder part 2 for replacement.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The combined use method of the grouting sleeve for the steel bar connection is characterized by comprising an installation step and a disassembly step;
the mounting steps are as follows: embedding a metal bushing with a buckle in a rubber plug, and forming for later use; preparing a hollow middle column part, and arranging clamping areas at a first end part and a second end part of the middle column part; the metal bushing of the rubber plug is sleeved on the first end part, and the clamping buckle is clamped and connected with the clamping groove of the first end part;
the middle column part and the rubber plug are sleeved in the grouting sleeve together, the rubber plug and the first end part are positioned at one side of a grout outlet of the grouting sleeve, a positioning screw rod, a boss and a rubber column are sequentially inserted from the other end of the grouting sleeve, the part of the positioning screw rod with a compression retainer ring is sleeved in the middle column part, the boss is clamped at the second end part, the rubber column is abutted to the second end part and positioned in the grouting sleeve, the grouting sleeve is integrally installed on a prefabricated member template end plate, a gasket and a locking nut are sleeved on the exposed threaded part of the positioning screw rod, and the ends of the grouting sleeve and the rubber column are tightly attached to the prefabricated member template end plate after locking;
inserting the steel bar into the middle column part from the rubber plug and the first end part and abutting against the positioning screw rod, and pressing the steel bar, wherein the end part of the rubber plug is flush with the end part of the grouting sleeve; grouting the outside of the grouting sleeve after the installation of the reinforcing steel bars is completed to finish the casting of the whole prefabricated part;
the disassembling step is as follows: after the whole prefabricated part is poured and solidified, loosening the locking nut, sequentially detaching the locking nut and the gasket from the lower part of the prefabricated part template end plate, pulling the positioning screw rod towards the outside of the grouting sleeve after detaching the prefabricated part template end plate, and extracting the rubber column, the boss and the middle column part together with the rubber plug from the grouting sleeve under the action of the pressing retainer ring by the positioning screw rod.
2. A combination type multifunctional auxiliary for a combined use method of the grouting sleeve for reinforcing steel bar connection according to claim 1, which is characterized by comprising a rubber stopper, a middle column part and a rubber column which are combined; a metal bushing is arranged in one end, close to the middle column part, of the rubber plug, and a plurality of buckles are arranged on the exposed part of the metal bushing and are sleeved in the first end part of the middle column part in a clamping manner; a boss is arranged at one end of the rubber column, which is close to the middle column part, and is connected in a second end part of the middle column part through threads, and a spigot is arranged at a thread withdrawal position of the second end part; the end of the rubber column is sleeved with a positioning screw rod with a compression check ring, the positioning screw rod penetrates through the rubber column and the boss and stretches into the middle column part, and the exposed part of the positioning screw rod is detachably sleeved with a gasket and a locking nut; the metal bushing is provided with a clamping part and an embedding part, the clamping part is sleeved with the first end part, the embedding part is embedded in the rubber plug, and the rubber plug is compounded to form a tight embedded structure; the embedded part is circumferentially provided with a plurality of through holes in an array manner, and the periphery of the tail end of the embedded part is provided with a plurality of outward-turned radial spokes; the clamping part is circumferentially provided with a plurality of openings, the opening is provided with the buckles, the first end part is circumferentially provided with a plurality of clamping grooves which are connected with the buckles in a matching way, and the clamping grooves penetrate through the peripheral wall of the first end part; the radial spokes are distributed in a central symmetry manner and are arranged at the edges of the areas between the adjacent through holes; the buckles are a plurality of arranged in a central symmetry mode, and the buckles are arranged in an outward inclined mode.
3. The multifunctional combined auxiliary for the grouting sleeve for steel bar connection according to any one of claims 2, wherein the metal bush is a connecting piece made of stainless spring steel, and the middle column part is a hollow steel piece.
4. The multifunctional combined accessory according to claim 2, wherein the first end portion is provided with a step for engagement on the circumference thereof.
5. The combined multifunctional auxiliary for the combined use method of the grouting sleeve for steel bar connection according to claim 2, wherein the outer diameter of the rubber stopper is set to be variable in diameter, the outer diameter near one end of the metal bush is smaller than the outer diameter of the other end and larger than the outer diameter of the middle cylinder part, and the inner diameter of the rubber stopper is smaller than the inner diameter of the middle cylinder part.
6. The combination multifunctional auxiliary of the combined use method of the grouting sleeve for steel bar connection according to claim 2, wherein the inner diameter of the rubber column is smaller than the inner diameter of the middle column part and the outer diameter is larger than the outer diameter of the middle column part, the end part of the rubber column is abutted with the second end part, and the boss is positioned in the second end part; the inner diameters of the boss and the rubber column are smaller than the outer diameter of the pressing check ring.
7. The combination type multifunctional auxiliary member for a combined use method of a grouting sleeve for reinforcing bar connection according to claim 2, wherein the rubber stopper, the middle column portion, the rubber column and the positioning screw are coaxially arranged; the positioning screw rod comprises a threaded portion and a polish rod portion, the side, close to the threaded portion, of the polish rod portion is provided with the pressing check ring, and the outer diameter of the polish rod portion is larger than that of the threaded portion and is matched with the inner diameter of the rubber column.
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| CN202110038182.1A CN114753564B (en) | 2021-01-12 | 2021-01-12 | Combined multifunctional auxiliary part of grouting sleeve for steel bar connection and combined use method |
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| CN202110038182.1A CN114753564B (en) | 2021-01-12 | 2021-01-12 | Combined multifunctional auxiliary part of grouting sleeve for steel bar connection and combined use method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207332121U (en) * | 2017-09-15 | 2018-05-08 | 中建机械洛阳有限公司 | A kind of PC components grout sleeve fixation kit |
| CN111945959A (en) * | 2020-07-24 | 2020-11-17 | 武汉源锦卓远机械有限公司 | Multifunctional auxiliary part for machining full grouting sleeve and assembling and disassembling method thereof |
| CN215167223U (en) * | 2021-01-12 | 2021-12-14 | 武汉源锦卓远机械有限公司 | Grouting sleeve's multi-functional auxiliary of combination formula for steel bar connection |
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2021
- 2021-01-12 CN CN202110038182.1A patent/CN114753564B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207332121U (en) * | 2017-09-15 | 2018-05-08 | 中建机械洛阳有限公司 | A kind of PC components grout sleeve fixation kit |
| CN111945959A (en) * | 2020-07-24 | 2020-11-17 | 武汉源锦卓远机械有限公司 | Multifunctional auxiliary part for machining full grouting sleeve and assembling and disassembling method thereof |
| CN215167223U (en) * | 2021-01-12 | 2021-12-14 | 武汉源锦卓远机械有限公司 | Grouting sleeve's multi-functional auxiliary of combination formula for steel bar connection |
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| CN114753564A (en) | 2022-07-15 |
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