CN219343779U - Coordinated type go-between hasp grout sleeve - Google Patents

Abstract

A coordinated type connecting ring lock catch grouting sleeve relates to the field of assembled reinforced concrete structures, and comprises a lower reinforcing steel bar, a connecting ring, a lock catch type connecting inner ring, a sleeve body and an upper reinforcing steel bar, wherein the upper reinforcing steel bar is connected with the upper end of the sleeve body; the connecting ring is sleeved on the lower reinforcing steel bar, and the connecting ring is locked and clamped on the lock catch type connecting inner ring; the inner hole wall of the sleeve body is provided with an annular groove along the circumferential direction, and the lock catch type connecting inner ring is arranged in the annular groove through a compression spring. According to the utility model, the connecting ring is locked and clamped on the lock catch type connecting inner ring by utilizing the key door lock clamping principle, so that the lower reinforcing steel bar is clamped in the sleeve body and is difficult to pull out, and the connecting quality is relatively reliable; the utility model has the characteristics of simple structure, accurate and rapid construction operation, capability of guaranteeing the stress performance of the steel bars, capability of reducing the labor cost, capability of adapting to different steel bar diameters and the like, and is easy to popularize and apply.

Description

Coordinated type go-between hasp grout sleeve

Technical Field

The utility model relates to the field of assembled reinforced concrete structures, in particular to a coordinated type connecting ring lock catch grouting sleeve.

Background

At present, the grouting connection of the sleeve body is one of the main ways of connecting reinforcing steel bars of an assembled building structure, and the reliability of the connection needs to be controlled with great importance. Before prefabricated, prefabricated reinforced concrete structural members can be connected in advance with sleeve body and reinforcing steel bars and pour, after maintenance is accomplished, prefabricated members are transported to the construction site and assembled, because sleeve body is pre-buried in advance inside the members, grouting material is injected to carry out reinforcing steel bar connection and belongs to airtight operation, and in addition, sleeve body used in the current construction site is narrow and irregular, grouting material in the sleeve body can be caused to appear running, leaking and generating problems such as bubbles during construction, and the problems cause frequent problems of reinforcing steel bar connection quality, and therefore the safety of buildings is reduced, and life and property safety and life construction of residents cannot be guaranteed. In addition, in the construction site, the prefabricated component connecting steel bars may be subjected to extrusion deformation, incorrect operation of workers and other factors, so that the sleeve body and the connecting steel bars are difficult to align, and the workers have to break the steel bars straight, cut edges or cut the steel bars off in order to solve the problem, so that the construction progress is delayed, and the connection performance of the prefabricated components is seriously affected. The construction speed is low, the connection performance is low, and a large amount of manpower and material resources are input, so that the industrialized development of the assembled building in China is seriously hindered.

The utility model patent application with the application publication number of CN109057166A discloses a buckle type sleeve body structure easy to position, and the technology has the following defects: (1) quick positioning has limitations: the quick positioning connection of the sleeve body and the reinforcing steel bars at two ends is realized through the connection of the male buckles and the buckling pieces, but the quick positioning connection can be realized only by precisely aligning the sleeve body and the reinforcing steel bars at the connecting ends due to the large number of the male buckles and the small volume. However, in actual processing or construction, conditions such as expansion of the die, extrusion deformation, slight deviation of processing and construction of the assembled structural members are common, and the conditions easily cause slight deviation or deflection of the connecting steel bars of the structural members, so that the connecting steel bars cannot be connected. (2) the fastener is easily damaged: the fastener of the utility model has lower strength, the sleeve body connecting steel bars are in rigid connection, and when the connecting end steel bars are inserted into the sleeve body in the assembly process of the components, the connecting steel bars can forcedly push up the fastener, thereby causing the fastener to be damaged by pushing or losing the positioning function. After the buckling piece is damaged, the tensile effect of the steel bar in the sleeve body is reduced by the buckling piece, and the connection capability is weakened; the grouting operation process can obstruct the flow of slurry, and the problems of slurry leakage, bubble generation and the like are easily caused, so that the problem of the connection quality of the structural member nodes is caused.

Disclosure of Invention

The utility model aims to solve the technical problems that: the coordinated type connecting ring lock catch grouting sleeve is provided, so that the defects of unreliable connecting quality, low construction speed and large amount of manpower and material resources are required in the prior art are overcome.

The technical scheme for solving the technical problems is as follows: the coordinated type connecting ring lock catch grouting sleeve comprises a lower reinforcing steel bar, a sleeve body, an upper reinforcing steel bar, a connecting ring and a lock catch type connecting inner ring, wherein the upper reinforcing steel bar is connected with the upper end of the sleeve body; the connecting ring is sleeved on the lower reinforcing steel bar, and the connecting ring is locked and clamped on the lock catch type connecting inner ring; the inner hole wall of the sleeve body is provided with an annular groove along the circumferential direction of the inner hole wall, and the lock catch type connecting inner ring is arranged in the annular groove through a compression spring.

The utility model further adopts the technical scheme that: the connecting ring comprises a ring body, the ring body is of a truncated hemispherical structure with an internal threaded hole, the internal threaded hole of the ring body is connected with lower reinforcing steel bars, the outer spherical surface of the ring body is in interference fit with the lock catch type connecting inner ring when the connecting ring is connected with the lock catch type connecting inner ring, and the bottom end surface of the ring body is locked and clamped on the lock catch type connecting inner ring when the connecting ring is connected with the lock catch type connecting inner ring.

The utility model further adopts the technical scheme that: the lock catch type connecting inner ring comprises an inner ring, two or more groups of telescopic barb devices and the compression spring; the inner ring is arranged in the annular groove of the sleeve body, two or more groups of telescopic barb devices are uniformly arranged on the inner wall of the inner ring, the telescopic barb devices are in interference fit with the outer spherical surface of the ring body in the connecting process of the connecting ring and the lock catch type connecting inner ring, and are locked and clamped with the bottom end surface of the ring body when the connecting ring and the lock catch type connecting inner ring are connected; two or more groups of compression springs are uniformly arranged on the outer wall of the inner ring, and the compression springs are abutted with the bottom of the annular groove of the sleeve body.

The utility model further adopts the technical scheme that: the telescopic barb device comprises a limiting spring, a fixed straight pipe and a telescopic barb; the fixed straight pipe is fixed on the inner side of the inner ring, the limiting spring is positioned in the fixed straight pipe, and one end of the limiting spring is fixedly connected with the inner side of the inner ring; one end of the telescopic barb is of a step-shaped structure, the minimum end of the step-shaped structure is fixedly connected with the other end of the limiting spring, and the telescopic barb stretches and contracts in the fixed straight pipe under the action of the limiting spring; the other end of scalable barb has the interior sphere that is the barb form, and this barb form interior sphere is inconsistent the cooperation with the outer sphere of circle body when go-between and hasp formula connection inner ring connection process, and the barb terminal surface of scalable barb is dead chucking with the bottom surface lock of circle body after go-between is connected with hasp formula connection inner ring.

The utility model further adopts the technical scheme that: the number of the annular grooves is three; the lock catch type connecting inner ring is correspondingly provided with three groups; the ring body has three layers, the connecting ring also comprises two sleeves which connect the three layers of ring bodies together.

The utility model further adopts the technical scheme that: the sleeve body is of a blind cylindrical structure with a closed upper end and an open lower end, and an arc surface for increasing the bonding effect of the inner wall of the sleeve body and the grouting material is arranged at the opening of the lower end; the upper end of the sleeve body is connected with the upper steel bar through a connecting nozzle.

The utility model further adopts the technical scheme that: the sleeve body on still be equipped with three thick liquid hole that communicates sleeve body hole, these three thick liquid hole include the dual-purpose thick liquid hole that is located sleeve body upper portion, be located the play thick liquid hole in sleeve body middle part, be located the grout hole of sleeve body lower part.

The utility model further adopts the technical scheme that: the sleeve body outer surface is formed with annular protruding rib in the position that corresponds the annular groove.

Due to the adoption of the structure, compared with the prior art, the coordinated type connecting ring lock catch grouting sleeve has the following beneficial effects:

reliable connection quality

The novel lock catch type connecting sleeve comprises a lower reinforcing steel bar, a connecting ring, a lock catch type connecting inner ring, a sleeve body and an upper reinforcing steel bar, wherein the upper reinforcing steel bar is connected with the upper end of the sleeve body, the lower reinforcing steel bar is connected in the connecting ring, the connecting ring is locked and clamped on the lock catch type connecting inner ring, and the lock catch type connecting inner ring is arranged in an annular groove of the sleeve body through a compression spring. The utility model uses the key door lock buckle principle to lock the connecting ring on the lock catch type connecting inner ring, so that the lower reinforcing steel bar is difficult to pull out when being buckled in the sleeve body, and the connecting quality is reliable.

Further, the connecting ring comprises a ring body and a sleeve for connecting the ring bodies of all layers together; the lock catch type connecting inner ring comprises an inner ring, a telescopic barb device and a compression spring; the telescopic barb device comprises a limiting spring, a fixed straight pipe and a telescopic barb; during the connection process of the connecting ring 2 and the lock catch type connecting inner ring 3, the barb-shaped inner spherical surface of the telescopic barb is in abutting fit with the outer spherical surface of the ring body; when the connection of the connecting ring 2 and the lock catch type connecting inner ring 3 is finished, the top end face of the barb end of the telescopic barb is locked and clamped with the bottom end face of the ring body. When the telescopic connecting sleeve is assembled, the connecting ring is connected to the lower reinforcing steel bar, then the connecting ring connected with the lower reinforcing steel bar is inserted into the sleeve body, the outer spherical surface of the uppermost ring body of the connecting ring is contacted with the barb-shaped inner spherical surface of the telescopic barb of the lock catch type connecting inner ring, the telescopic barb is jacked up, and the limiting springs are respectively compressed, so that the limiting springs generate reverse acting force; when the outer spherical surface of the uppermost ring body of the connecting ring completely passes through the barb-shaped inner spherical surface of the telescopic barb, the limiting spring rebounds to extend out of the fixed straight rod to push the corresponding telescopic barb, so that the telescopic barb is restored to the initial position, and at the moment, the bottom end surface of the uppermost ring body of the connecting ring and the top end surface of the barb end of the telescopic barb are locked and clamped to prevent the lower reinforcing steel bar from being pulled out. When the assembly formed by connecting the lower reinforcing steel bars and the connecting ring is completely inserted into the sleeve body, the bottom end face of each layer of ring body of the connecting ring is locked and clamped with the top end face of the barb end of the telescopic barb of each group of lock catch type connecting inner ring, so that the lower reinforcing steel bars are difficult to pull out.

2. Simple structure, accurate and quick construction operation

The utility model uses the key door lock buckle principle to make the sleeve body very simple in structure, and can realize perfect mechanical engagement performance only by buckling the connecting ring with the ring of the lock catch type connecting inner ring, thereby avoiding the extraction of the lower reinforcing steel bar, and the construction operation is accurate and quick; after the construction site assembly operation is completed, the spatial position of the lower reinforcing steel bar in the sleeve body can be ensured to be fixed.

3. Requirements for guaranteeing stress performance of reinforcing steel bars

The lock catch type connecting inner ring can slide in the corresponding annular grooves and is limited in the annular grooves under the action of resilience force of the compression springs, so that slight deformation of the lower reinforcing steel bars due to accidental factors in field assembly operation is coordinated, complete contact between the inner ring and the annular grooves is ensured, and the requirement of the stress performance of the reinforcing steel bars is met.

4. Not only can reduce the labor cost, but also solves the problem of insufficient grouting compactness caused by falling of grouting materials

According to the utility model, the connecting ring is buckled with the ring of the lock catch type connecting inner ring, so that better steel bar connection can be realized, and the spatial position of the lower steel bar in the sleeve body can be ensured to be fixed; the sleeve body and the connecting steel bars are prevented from being difficult to align, a large amount of manpower and material resources are adopted for straightening the steel bars, trimming or cutting off the steel bars, and therefore the cost of the manpower and material resources can be reduced.

In addition, the sleeve body is provided with three slurry holes communicated with the inner hole of the sleeve body, and the three slurry holes comprise a dual-purpose slurry hole positioned at the upper part of the sleeve body, a slurry outlet hole positioned at the middle part of the sleeve body and a grouting hole positioned at the lower part of the sleeve body. The upper dual-purpose slurry hole is used as a slurry outlet hole in the early grouting operation and is used as a grouting hole in the later quality monitoring operation; the slurry outlet hole in the middle is blocked in the early grouting operation, and is used as the slurry outlet hole in the later quality monitoring operation; the grouting holes at the lower part are used as grouting holes in the early grouting operation, the grouting holes are blocked in the later quality monitoring operation, and the simplified coordination operation among the three grouting holes reduces the labor cost and solves the problem of insufficient grouting compactness caused by falling of grouting materials.

5. Can adapt to different diameters of reinforcing steel bars

The connecting ring comprises a sleeve and a ring body connected to the sleeve, wherein the ring body can be matched with most types of reinforcing steel bars and can be matched with different diameters of the reinforcing steel bars.

6. Can strengthen the working property of the grouting sleeve

The utility model is provided with an arc surface at the opening of the lower end of the sleeve body; the curved surface not only can gather together the whole grouting material in the sleeve in the initial stage of completion of grouting operation, so that the grouting material is not easy to slide off, the later slurry quality monitoring operation is optimized, but also can produce a mechanical engagement phenomenon on the whole formed by bonding the slurry and the lower reinforcing steel bar after the slurry is completely solidified, thereby exerting the effect of 'sleeving and fixing', the lower reinforcing steel bar can transfer stress to the grouting material in the drawing process, the grouting material is restrained at the circular surface of the sleeve and cannot be pulled out easily, the bonding effect between the grouting material and the reinforcing steel bar is enhanced, the bonding is firmer, and the working performance of the grouting sleeve is greatly enhanced.

7. Flexible operation and accurate operation

The connecting ring and the lower reinforcing steel bar are connected by screwing the connecting ring to the lower reinforcing steel bar, so that the connecting ring can be installed by workers in the field or in factories in a matching way, and the connecting ring is flexible in operation and accurate in operation.

8. The building structure has high bearing capacity to resist external load

In the grouting operation of site construction, the middle grout outlet of the sleeve body is plugged in advance, grouting is performed from the lower grout outlet, when the interior of the sleeve body is filled with grout and flows out from the upper dual-purpose grout outlet, the lower grout outlet is plugged in time, and then the upper dual-purpose grout outlet is plugged, if the interior of the sleeve body is provided with a grout cavity defect, the grout falls back, the curved surface at the opening of the sleeve body can slow the falling speed of the lower grout in the interior of the sleeve body, so that the falling back of the upper grout gradually fills the grout cavity below the upper dual-purpose grout outlet, in the later monitoring operation, if the concrete connecting node caused by the grout cavity defect is found to have a quality problem, the upper dual-purpose grout outlet can be opened until the grout flow in a grouter becomes extremely slow, at the moment, the middle grout outlet is opened to enable the grout in the sleeve body to flow and flow out, then both the upper dual-purpose grout outlet and the middle grout outlet are plugged, the joint connection quality of an assembled concrete member can be greatly improved, and the concrete member can be guaranteed to have high-load bearing capacity after the grout hardens, and the concrete member can bear a large-load.

The technical features of a coordinated type connecting ring lock catch grouting sleeve according to the present utility model will be further described with reference to the accompanying drawings and examples.

Drawings

Fig. 1: the utility model relates to a structural schematic diagram of a coordinated type connecting ring lock catch grouting sleeve,

fig. 2: embodiment-a front cross-sectional view of the sleeve body,

fig. 3: embodiment-a front cross-sectional view of the coupling ring,

fig. 4: figure 3 is a top view of the drawing,

fig. 5: a front cross-sectional view of the lower steel bar connected with the connecting ring;

fig. 6: FIG. 5 is a top view;

fig. 7: embodiment one the front cross-sectional view of the snap-lock connection inner ring;

fig. 8: FIG. 7 is a top view;

fig. 9: a first step of connecting the connecting ring with the sleeve body in the field construction assembly operation is shown;

fig. 10: an enlarged view of portion a of fig. 9 (detail of contact of the connecting ring with the snap-lock inner ring);

fig. 11: a second step of schematic diagram of the connection of the connecting ring and the sleeve body in the second step of field construction assembly operation;

fig. 12: an enlarged view of section B of fig. 11 (schematic detail of the telescoping barb on the connecting ring top-off latch type connecting inner ring);

fig. 13: a third step of connecting the connecting ring and the sleeve body in the field construction assembly operation is completed;

fig. 14: an enlarged view of part C of fig. 13 (a partially schematic detailed view at the time of connection completion);

fig. 15: an enlarged view of part D of FIG. 13 (a detailed view of the telescopic barb abutting and clamping on the connecting ring and the snap-lock connecting inner ring when the connection is completed);

in the above figures, the reference numerals are as follows:

1-a lower reinforcing bar, which is arranged at the lower part,

2-connecting ring, 21-ring body, 211-internal threaded hole, 212-external spherical surface, 22-sleeve,

3-snap-fit connection inner ring, 31-compression spring, 32-inner ring,

33-telescopic barb device, 331-limit spring, 332-fixed straight tube, 333-telescopic barb,

4-sleeve body, 41-connecting mouth, 42-annular groove, 43-annular rib,

44-slurry holes, 441-dual-purpose slurry holes, 442-slurry outlet holes, 443-slurry filling holes, 45-curved surfaces,

5-upper rebar.

Detailed Description

Example 1

The utility model provides a coordinated type go-between hasp grout sleeve, includes lower part reinforcing bar 1, go-between 2, hasp formula connect inner ring 3, sleeve body 4, upper portion reinforcing bar 5, wherein:

the sleeve body 4 is of a blind tubular structure with a closed upper end and an open lower end, the upper end of the sleeve body 4 is provided with a connecting nozzle 41, and the connecting nozzle 41 is in threaded connection with the upper steel bar 5; an arc surface 45 for increasing the bonding effect of the inner wall of the sleeve body and the grouting material is arranged at the opening of the lower end of the sleeve body 4; three annular grooves 42 are formed in the inner hole wall of the sleeve body 4 along the circumferential direction, and three annular convex ribs 43 are formed at the positions of the outer surfaces corresponding to the three annular grooves 42; the sleeve body 4 is also provided with three slurry holes 44 communicated with the inner hole of the sleeve body, and the three slurry holes 44 comprise a dual-purpose slurry hole 441 positioned at the upper part of the sleeve body, a slurry outlet 442 positioned at the middle part of the sleeve body and a grouting hole 443 positioned at the lower part of the sleeve body.

The connecting ring 2 comprises three layers of ring bodies 21, two sleeves 22 for connecting the three layers of ring bodies 21 together, the ring bodies 21 are of a truncated hemispherical structure with inner threaded holes 211, the inner threaded holes 211 of the ring bodies 21 are in threaded connection with the lower reinforcing steel bars 1, the outer spherical surfaces 212 of the ring bodies 21 are in abutting fit with the lock catch type connecting inner rings 3 in the connecting process of the connecting ring 2 and the lock catch type connecting inner rings 3, and the bottom end faces 223 of the ring bodies 21 are locked and clamped on the lock catch type connecting inner rings 3 when the connecting ring 2 and the lock catch type connecting inner rings 3 are connected.

The lock catch type connecting inner ring 3 is provided with three groups which are respectively arranged in three annular grooves 42 of the sleeve body 4, and each group of lock catch type connecting inner ring 3 comprises an inner ring 32, four telescopic barb devices 33 and four compression springs 31; the inner ring 32 is arranged in the annular groove 42 of the sleeve body 4; the four telescopic barb devices 33 are uniformly arranged on the inner wall of the inner ring 32, one end of the four compression springs 31 are uniformly arranged on the outer wall of the inner ring 32, and the other end of the compression springs 31 is abutted with the bottom of the annular groove 42 of the sleeve body 4; the inner ring 32 is slidable along the annular groove 42 under the action of the compression spring 31.

The telescopic barb device 33 comprises a limit spring 331, a fixed straight tube 332 and a telescopic barb 333; the fixed straight tube 332 is fixed on the inner side of the inner ring 32, the limit spring 331 is positioned in the fixed straight tube 332, one end of the limit spring 331 is fixedly connected with the inner side of the inner ring 32, and the limit spring 331 can only reciprocate in the fixed straight tube 304 due to the limitation of the fixed straight tube 304; one end of the telescopic barb 333 is in a step-shaped structure, the minimum end of the step-shaped structure is fixedly connected with the other end of the limiting spring 331, and the telescopic barb extends and contracts in the fixed straight tube 332 under the action of the limiting spring 331; the other end of the telescopic barb 333 is provided with an inner sphere in a barb shape, the barb-shaped inner sphere is matched with the outer sphere 212 of the ring body 21 in a contact manner when the connecting ring 2 is connected with the lock catch type connecting inner ring 3, and the top end face of the barb end of the telescopic barb 333 is locked and clamped with the bottom end face 223 of the ring body 21 when the connecting ring 2 is connected with the lock catch type connecting inner ring 3.

The working principle of the utility model is as follows:

when the sleeve body is manufactured, the sleeve body is firstly divided into two halves for reverse casting, the inner ring is placed into the annular inner grooves corresponding to the two half sleeves, and finally the two half sleeves are welded and the like to be combined into a complete sleeve body; likewise, the telescoping barb assembly 33 may be pre-positioned within the sleeve during manufacture of the sleeve body.

When in use, after the lower steel bar 1 is connected with the connecting ring 2, when the connecting ring 2 is connected with the sleeve body 4, three groups of telescopic barb devices 33 on the lock catch type connecting inner ring 3 are propped open towards two sides, so that the telescopic barb 333 is compressed in the fixed straight tube 332; when the connection of the lower reinforcing steel bar 1 is finished, the bottom end surface 223 of the ring body 21 of each layer of the connecting ring 2 is locked and clamped with the top end surface of the barb end of the telescopic barb 333, and the stress on the lower reinforcing steel bar 1 is sequentially transferred to the fixed straight pipe 332, the inner ring 32, the annular groove 42, grouting materials in bonding contact with the surface of the annular convex rib and the upper reinforcing steel bar 5 connected with the connecting nozzle of the sleeve body 4, and the lower reinforcing steel bar 1 is connected with the inner part of the sleeve body 4 in a meshed manner through grouting materials, so that the lower reinforcing steel bar is difficult to pull out.

The construction process of the utility model is as follows:

1. and (3) field construction assembly operation:

the first step: as shown in fig. 9 to 10, the connecting ring 2 is connected to the lower reinforcing steel bar 1, then the connecting ring 2 connected with the lower reinforcing steel bar 1 is inserted into the sleeve body 4, the outer spherical surface 212 of the uppermost ring body of the connecting ring 2 is contacted with the barb-shaped inner spherical surfaces of the four retractable barbs 333 of the lock catch type connecting inner ring 3, the four retractable barbs 333 are jacked to respectively compress the four limit springs 331, the four retractable barbs 333 are respectively compressed in the fixing straight rod 332, and the four limit springs 331 generate reverse acting force. When the outer spherical surface 212 of the upper ring body of the connecting ring 2 completely passes through the barb-shaped inner spherical surface of the four telescopic barbs 333, the four limit springs 331 extend out of the fixed straight rod 332 under the action of resilience force to push the corresponding telescopic barbs 333, so that the four telescopic barbs 333 are restored to the initial position, and at the moment, the bottom end surface 223 of the upper ring body of the connecting ring 2 and the barb end top end surfaces of the four telescopic barbs 333 are locked and clamped, so that the lower reinforcing steel bar 1 is prevented from being pulled out.

And a second step of: the connecting ring 2 connected with the lower reinforcing steel bar 1 is continuously inserted into the sleeve body 4 upwards, the outer spherical surface 212 of the uppermost layer and the middle layer ring body of the connecting ring 2 is respectively contacted with the barb-shaped inner spherical surfaces of the four telescopic barbs 333 of the corresponding lock catch type connecting inner ring 3 (see fig. 11-12), and the rest is the same as the first step.

And a third step of: when the connecting ring 2 connected with the lower reinforcing steel bar 1 is completely inserted into the sleeve body (see fig. 13-15), the bottom end surfaces 223 of the ring bodies of all layers of the connecting ring 2 are locked and clamped with the top end surfaces of the barb end of the four telescopic barbs 333 of each group of lock catch type connecting inner rings 3, so that the lower reinforcing steel bar 1 is difficult to pull out; and then starting the next grouting operation.

2. Grouting operation in site construction: the first step is to plug the middle slurry outlet 442 of the sleeve body 4 in advance, grouting from the lower slurry outlet 443, when the interior of the sleeve body is full of slurry and flows out from the upper dual-purpose slurry outlet 441, plugging the lower slurry outlet 443 in time, and then plugging the upper dual-purpose slurry outlet 441, if there is a slurry cavity defect in the interior of the sleeve body, the opening and closing curved surface 45 of the sleeve body can slow the falling speed of the lower slurry in the interior of the sleeve body, so that the falling of the upper slurry gradually fills the slurry cavity below the upper dual-purpose slurry outlet 442, then after a small period of time, the slurry quality in the sleeve must be checked, if the concrete connection node caused by the slurry cavity defect is found to have a quality problem, the upper dual-purpose slurry outlet 441 can be opened until the slurry flow in the grouter becomes extremely slow, at this time, the middle slurry outlet 442 is opened to allow the slurry in the sleeve body to flow and flow out, then both the upper dual-purpose slurry outlet 441 and the middle slurry outlet 442 are plugged, the falling of the upper dual-purpose slurry outlet 441 can be greatly improved, the assembly quality of the assembly structure can be guaranteed, and the concrete connection structure can bear a large load when the concrete connection structure is hardened, and the concrete connection structure can bear the concrete connection quality can be guaranteed.

As a modification of the first embodiment, the annular groove 42 may have only one or two or four or five … …; the lock catch type connecting inner ring 3 is provided with one group, two groups, four groups and five groups … … correspondingly; the ring body 21 is provided with one layer, two layers, four layers and five layers … …. When the collar 21 has only one layer, the sleeve 22 may not be required.

As a further alternative to the first embodiment, the telescopic barb means 33 of each set of snap-lock connection inner rings 3 may also be two or three or five or six … …; likewise, each group of compression springs 31 of the snap-lock connection inner ring 3 has two or three or five or six … …, respectively.

Claims (8)

1. The utility model provides a coordinated type go-between hasp grout sleeve, includes lower part reinforcing bar (1), sleeve body (4), upper portion reinforcing bar (5), and upper portion reinforcing bar (5) are connected its characterized in that with the upper end of sleeve body (4): the connecting ring (2) and the lock catch type connecting inner ring (3) are also included; the connecting ring (2) is sleeved on the lower steel bar (1), and the connecting ring (2) is locked and clamped on the lock catch type connecting inner ring (3); the inner hole wall of the sleeve body (4) is provided with an annular groove (42) along the circumferential direction, and the lock catch type connecting inner ring (3) is arranged in the annular groove (42) through the compression spring (31).

2. The unison ring lock collar grouting sleeve as claimed in claim 1, wherein: the connecting ring (2) comprises a ring body (21), the ring body (21) is of a truncated hemispherical structure with an internal threaded hole (211), the internal threaded hole (211) of the ring body (21) is connected with a lower reinforcing steel bar (1), an external spherical surface (212) of the ring body (21) is in interference fit with the lock catch type connecting inner ring (3) in the connecting process of the connecting ring (2) and the lock catch type connecting inner ring (3), and a bottom end surface (223) of the ring body (21) is locked and clamped on the lock catch type connecting inner ring (3) when the connecting ring (2) and the lock catch type connecting inner ring (3) are connected.

3. A co-ordinated attachment ring locking grout sleeve as claimed in claim 2, wherein: the lock catch type connecting inner ring (3) comprises an inner ring (32), two or more groups of telescopic barb devices (33) and the compression spring (31); the inner ring (32) is arranged in an annular groove (42) of the sleeve body (4), two or more groups of telescopic barb devices (33) are uniformly arranged on the inner wall of the inner ring (32), the telescopic barb devices (33) are in abutting fit with an outer spherical surface (212) of the ring body (21) in the connecting process of the connecting ring (2) and the lock catch type connecting inner ring (3), and are locked and clamped with a bottom end surface (223) of the ring body (21) when the connecting ring (2) and the lock catch type connecting inner ring (3) are connected; two or more groups of compression springs (31) are uniformly arranged on the outer wall of the inner ring (32), and the compression springs (31) are abutted with the bottom of the annular groove (42) of the sleeve body (4).

4. A co-ordinated attachment ring locking grout sleeve as claimed in claim 3, wherein: the telescopic barb device (33) comprises a limiting spring (331), a fixed straight pipe (332) and a telescopic barb (333); the fixed straight tube (332) is fixed on the inner side of the inner ring (32), the limiting spring (331) is positioned in the fixed straight tube (332), and one end of the limiting spring (331) is fixedly connected with the inner side of the inner ring (32); one end of the telescopic barb (333) is of a step-shaped structure, the minimum end of the step-shaped structure is fixedly connected with the other end of the limiting spring (331), and the telescopic barb stretches and contracts in the fixed straight tube (332) under the action of the limiting spring (331); the other end of the telescopic barb (333) is provided with an inner sphere which is in a barb shape, the inner sphere which is in a barb shape is in contact fit with an outer sphere (212) of the ring body (21) when the connecting ring (2) is connected with the lock catch type connecting inner ring (3), and the top end face of the barb end of the telescopic barb (333) is locked and clamped with the bottom end face (223) of the ring body (21) when the connecting ring (2) is connected with the lock catch type connecting inner ring (3).

5. The unison ring lock collar grouting sleeve of claim 4, wherein: the number of the annular grooves (42) is three; the lock catch type connecting inner ring (3) is correspondingly provided with three groups; the ring body (21) is provided with three layers, the connecting ring (2) also comprises two sleeves (22), and the three layers of ring bodies (21) are connected together by the two sleeves (22).

6. The unison ring lock collar grouting sleeve as claimed in claim 1, wherein: the sleeve body (4) is of a blind cylindrical structure with a closed upper end and an open lower end, and an arc surface (45) for increasing the bonding effect of the inner wall of the sleeve body and the grouting material is arranged at the opening of the lower end; the upper end of the sleeve body (4) is connected with the upper steel bar (5) through a connecting nozzle (41).

7. The unison ring lock collar grouting sleeve as claimed in claim 6, wherein: the sleeve body (4) is also provided with three slurry holes (44) communicated with the inner hole of the sleeve body, and the three slurry holes (44) comprise a dual-purpose slurry hole (441) positioned at the upper part of the sleeve body, a slurry outlet hole (442) positioned at the middle part of the sleeve body and a grouting hole (443) positioned at the lower part of the sleeve body.

8. The unison ring lock collar grouting sleeve as claimed in claim 7, wherein: the outer surface of the sleeve body (4) is provided with annular convex ribs (43) at positions corresponding to the annular grooves (42).

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