WO2019196741A1 - 套筒内部卡接式连接装置及其连接结构以及其安装方法 - Google Patents

套筒内部卡接式连接装置及其连接结构以及其安装方法 Download PDF

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Publication number
WO2019196741A1
WO2019196741A1 PCT/CN2019/081527 CN2019081527W WO2019196741A1 WO 2019196741 A1 WO2019196741 A1 WO 2019196741A1 CN 2019081527 W CN2019081527 W CN 2019081527W WO 2019196741 A1 WO2019196741 A1 WO 2019196741A1
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WO
WIPO (PCT)
Prior art keywords
sleeve
snap
circlip
internal snap
connection
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PCT/CN2019/081527
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English (en)
French (fr)
Inventor
李藏柱
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李藏柱
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Publication date
Application filed by 李藏柱 filed Critical 李藏柱
Publication of WO2019196741A1 publication Critical patent/WO2019196741A1/zh

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    • 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

Definitions

  • the invention relates to a steel bar connecting structure, in particular to a sleeve internal snap-in connecting structure.
  • the prefabricated concrete structure construction, the connection method of the prefabricated components, especially the vertical reinforcement of the vertical members are mainly: 1) welded joints of embedded parts, 2) bolted parts of embedded parts 3) Reinforced sleeve grouting connection three connection modes.
  • the pre-embedded welded joint is a joint steel plate preset at the joint portion of the member, and after the pre-fabricated member is installed, the adjacent pre-embedded steel sheets between the members are welded and integrally connected.
  • the bolt connection method of the embedded part is to reserve the bolt hole of the embedded steel plate, and reserve the installation bolt at the installation part.
  • the bolt is inserted into the bolt hole of the pre-buried steel plate of the preset component. Fasten.
  • the advantage is that the joint strength is higher than the welding strength, and the disadvantages are: high cost, structural connection integrity / air tightness / poor shock resistance, poor corrosion resistance / durability; small market application range.
  • the grouting sleeve includes a sleeve which is open at both ends and a grouting port 91 and a grouting port 92 which are mounted on the side wall of the sleeve.
  • the sleeve is pre-buried in the upper member 93, and the pre-embedded rib 94 of the upper member is inserted into the sleeve, and the sleeve feed port and the discharge port are reserved outside the upper member.
  • the insertion rib 96 protruding from the lower member 95 is inserted into the sleeve; after the component is installed and positioned, the joint 97 of the upper member and the lower member is filled, and then the grout is injected from the feed hole to make the steel bar and the sleeve Combine and play a connecting role.
  • the grouting is used to make the steel bars in a sealed environment.
  • the anti-corrosion/durability problem and the joint strength are better than the above two methods of welding and bolting.
  • grouting material plays a decisive role in the quality of connection. It must be filled with fullness, no slurry leakage and no shrinkage. However, it is difficult to connect the vertical members in particular, which is easy to leak and cannot be quality checked. Ensure the quality of the connection, the quality controllability is poor; the quality of the connection directly affects the connection strength of the steel bar, forming an ineffective connection (steel core pulling phenomenon), resulting in building safety hazards.
  • the object of the present invention is to provide a sleeve internal snap-on connecting device and a connecting structure thereof and a mounting method thereof, which have the advantages that the connection strength between the connecting steel bar and the sleeve can be improved, and the installation is convenient.
  • a sleeve internal snap-on connection device comprising a sleeve and a snap-fit member, the snap-fit member being snapped on the inner side of both ends of the sleeve.
  • the snap member is an externally threaded nut
  • the inner wall of the sleeve is provided with an internal thread for threadedly connecting the externally threaded nut.
  • the rod-shaped connector is inserted into the inside of the sleeve, and then the externally threaded nut is sleeved on the rod-shaped connector, and the externally threaded nut is screwed and fixed on the inner side of the sleeve, and the cement is poured.
  • the rod-shaped connector can be fixedly connected with the sleeve, and the rod-shaped connector is restricted from moving out of the sleeve in the direction of pulling out the sleeve; the externally threaded nut can be carried toward The force of the mud in the direction of the sleeve is pulled out, and the strength of the connection between the rod-shaped connector and the sleeve is improved.
  • the invention is further provided that the externally threaded nut can be split into two halves in the radial direction.
  • the two half-threaded nuts can be sleeved and sleeved on the rod-shaped connector, and then rotated and fixed in the sleeve for easy installation.
  • the invention is further provided that the end face of the externally threaded nut is provided with a torsion hole.
  • the present invention is further configured such that the engaging member is an axially abutting circlip, and the inner wall of the sleeve is provided with a snap groove for axially abutting the circlip.
  • the present invention is further configured such that the inner ring of the axially abutting circlip is fixedly coupled with the anti-dropping blade, and the anti-dropping blade is inclined toward the center of the sleeve in a direction close to the central axis of the sleeve.
  • the present invention is further configured such that the latching member is a radial locking circlip, the radial locking circlip is conical, and the smaller end of the radial locking circlip is oriented toward the center of the sleeve;
  • the inner ring of the locking circlip is provided with a deformation reserved gap, and the deformation reserved gap is evenly distributed around the center circumference of the locking circlip;
  • the inner wall of the sleeve is provided with a snap groove for locking the radial locking circlip .
  • the force in the direction of the cylinder is elastically deformed in the direction of pulling out the sleeve, and the pressing force between the inner ring of the radial locking circlip and the connecting rib is increased, and the inner ring of the radial locking circlip is connected with the connecting rib
  • the frictional resistance is increased to limit the movement of the connecting ribs in the direction of pulling out the sleeve, and the connection strength between the connecting rib and the sleeve is improved.
  • the invention is further provided that the radial locking circlip is provided at least two at each end of the sleeve.
  • the plurality of radial locking circlips after the plurality of radial locking circlips are subjected to the force in the direction of pulling out the sleeve, the plurality of radial locking circlips can be elastically deformed in the direction of pulling out the sleeve, and the relationship between the rod and the rod-shaped connector is increased.
  • the frictional resistance increases the bearing capacity of the radial locking circlip and further improves the connection strength between the sleeve and the rod-shaped connector.
  • the present invention is further configured such that the radial locking circlip outer ring is fixedly coupled with a mounting ratchet that is inclined away from the center of the sleeve in a direction away from the central axis of the sleeve.
  • the invention is further provided that the sleeve is provided with a grouting hole.
  • the invention is further provided that the surface of the sleeve and/or the surface of the clip is plated with a rust preventive layer.
  • the invention is further provided that the inner wall of the sleeve is provided with an anti-slip pattern.
  • a sleeve internal snap-on connection structure comprising the above-mentioned sleeve internal snap-on connection device and a connecting rib, the connecting rib being insertable from the end of the sleeve into the sleeve; the clip is used for limiting The connecting rib inserted inside the sleeve moves in the direction of pulling out of the sleeve.
  • the connecting rib is snapped into the sleeve through the engaging member, and the connecting rib is pre-buried and fixed on the end faces of the two walls to be connected to each other, and the installation is relatively simple; the cement slurry is poured into the sleeve and waits After the cement slurry is solidified, the cement slurry can fix and connect the connecting ribs, the snap members and the sleeve together, thereby improving the joint strength between the connecting ribs and the sleeve, thereby improving the joint strength between the two walls.
  • the invention is further configured that: the connecting rib is a connecting reinforcing bar, and one end of the connecting reinforcing bar is fixedly connected with an enlarged head, the radial dimension of the enlarged head is larger than a radial dimension of the connecting reinforcing bar, and the engaging member is used for the sleeve along the sleeve The axial interference prevents the enlarged head located inside the sleeve from moving in the direction of pulling out of the sleeve.
  • the present invention is further provided such that the enlarged head is provided with a truncated cone toward one end of the sleeve, and the smaller end of the truncated cone faces the direction of the insertion sleeve.
  • the round table surface abuts against the clip member, and the round table surface can open the inner ring of the clip member away from the central axis of the sleeve, so that the enlarged head wears Insert the inner ring of the clip connector into the sleeve.
  • the invention is further arranged such that the connecting rib is a common steel bar.
  • the present invention is further configured such that the sleeve internal snap-on connection structure further comprises a connection peg having a peg hole for the connection peg to be inserted.
  • the sleeve internal snap-on connection structure further comprises a beam body, and the connection stud is fixedly connected to the beam body.
  • a method for installing a sleeve internal snap-on connection structure includes the following steps:
  • the present invention is further configured to: the S1 further includes the following steps:
  • the connecting rib is a connecting steel bar
  • the engaging member is an externally threaded nut
  • the connecting steel bar member is inserted into the sleeve
  • A2 The outer thread nut is placed on the connecting steel bar
  • A3 Rotate the externally threaded nut into the inside of the sleeve.
  • the present invention is further configured to: the S1 further includes the following steps:
  • the connecting rib is an ordinary steel bar
  • the clamping member is a radial locking circlip
  • the radial locking circlip is snapped into the engaging groove
  • the present invention is further configured to: the S1 further includes the following steps:
  • the connecting rib is a connecting reinforcing bar
  • the engaging member is axially abutting the circlip
  • the axial abutting circlip is snapped into the engaging groove
  • the expansion head is inserted into the sleeve through the inner side of the axially abutting circlip.
  • the present invention has the following beneficial effects:
  • the connecting rib is snapped into the sleeve by the snap member, and the connecting rib is pre-buried and fixed on the end faces of the two walls to be connected, and the installation is relatively simple;
  • the cement slurry can fix and connect the connecting ribs, the snap fittings and the sleeve together, thereby improving the joint strength between the connecting rib and the sleeve, thereby improving two The strength of the connection between the walls;
  • the radial locking circlip can lock the rod-shaped connecting ribs to restrict the connecting ribs from pulling out the sleeve, which is convenient for installation;
  • the grouting hole facilitates the flow of cement slurry into the sleeve, and the cement slurry is more likely to fill the inner space of the sleeve, improve the bearing capacity of the cement slurry after solidification, and improve the connection strength between the sleeve and the connecting rib.
  • Figure 1 is a schematic view showing the structure of the sleeve in Embodiment 1;
  • FIG. 2 is a schematic view showing the mounting structure of the sleeve internal snap-on connecting device and the connecting structure thereof in Embodiment 1;
  • Figure 3 is a schematic view showing the structure of the externally threaded nut in Embodiment 1;
  • FIG. 4 is a schematic view showing a sleeve internal snap-on connecting device and a connecting structure mounting structure thereof in Embodiment 2;
  • Figure 5 is a schematic view showing the structure of the axial abutting circlip in Embodiment 2;
  • Figure 6 is a schematic view showing the structure of the axial abutting circlip in Embodiment 3;
  • Figure 7 is a schematic view showing the structure of the anti-dropping blade in Embodiment 3.
  • Figure 8 is a schematic view showing the structure of the radial locking circlip in Embodiment 4.
  • FIG. 9 is a schematic view showing a structure of a deformation reserved gap in Embodiment 4.
  • Figure 10 is a schematic view showing the mounting structure of the sleeve internal snap-on connecting device and the connecting structure thereof in Embodiment 5;
  • Figure 11 is a schematic view showing the structure of a common steel bar in Embodiment 6;
  • Figure 12 is a schematic view showing the structure of the stud hole in Embodiment 7;
  • Figure 13 is a schematic view showing the inner sleeve snap-on connecting device and the connecting structure mounting structure thereof in the seventh embodiment
  • Figure 14 is a schematic view showing the structure of the mounting ratchet in Embodiment 8.
  • Figure 15 is a schematic view showing the assembly relationship between the mounting ratchet and the snap groove in Embodiment 8;
  • Figure 16 is a schematic view showing the structure of the locking circlip in Embodiment 9;
  • Figure 17 is a schematic view showing the structure of the axial anti-detachment retaining spring in Embodiment 9;
  • Figure 18 is a schematic view showing the structure of the shutter in Embodiment 10.
  • FIG. 19 is a schematic view showing the working principle of the internal snap-fit connection structure of the sleeve in Embodiment 10;
  • Figure 20 is a schematic view showing the double-piece mounting structure in Embodiment 11;
  • 21 is a schematic view showing a sleeve connecting structure in the prior art
  • Figure 22 is a schematic view showing the structure of the sleeve in the prior art
  • Fig. 23 is a schematic view showing the engagement bolt of the limit bolt in the embodiment 12.
  • the internal snap-fit connection device of the sleeve and the connection structure thereof are as shown in FIG. 1.
  • the internal snap-fit connection device of the sleeve 1 is a sleeve 1, and the sleeve 1 is provided with a grouting hole 11 for facilitating the pouring of the cement slurry. It flows into the inside of the sleeve 1 and more easily fills the inner space of the sleeve 1.
  • the inner snap-fit connection structure of the sleeve includes a sleeve 1, a snap member and a connecting rib, and the snap member is an externally threaded nut 2, and the inner wall of the two ends of the sleeve 1 is provided with a threaded connection of the externally threaded nut 2
  • the internal thread 12, the externally threaded nut 2 can be screwed and fixed to the inner side of the sleeve 1 by the internal thread 12.
  • the connecting rib is a connecting reinforcing bar 3, and the connecting rebar 3 is fixedly connected to the end of the sleeve 1 with an enlarged head 31.
  • the outer diameter of the enlarged head 31 is larger than the outer diameter of the connecting rebar 3 and the inner diameter of the externally threaded nut 2;
  • the end of the connecting steel bar 3 away from the sleeve 1 is fixedly connected with the end surface of the wall (not shown) to be connected, so that the wall body can be connected with the sleeve 1 to realize the internal connecting device through the sleeve and Its connection structure connects the two walls.
  • the internal snap-in connection device of the sleeve and the connection structure thereof are simply installed, and after the cement slurry poured inside the sleeve 1 is solidified, the connecting steel bar 3 can be fixedly connected with the sleeve 1 to improve the sleeve 1 and the connecting steel bar 3 The strength of the connection between the two, thereby increasing the strength of the connection between the two walls of the sleeve internal connecting device and its connection structure.
  • the externally threaded bolt is divided into two halves in the radial direction.
  • the connecting steel bar 3 is fixedly connected to the wall in advance, the two ends of the sleeve 1 can be respectively sleeved on the two connecting reinforcing bars 3 to make the enlarged head.
  • 31 is inserted into the sleeve 1 and then the two outer threaded bolts are sleeved and sleeved on the connecting steel bar 3.
  • the externally threaded bolt is screwed and fixed on the inner side of the sleeve 1, and the installation is more flexible and convenient.
  • the end face of the externally threaded bolt is provided with a torsion hole 21 for facilitating the use of an angle grinder wrench or other double pin wrench to facilitate screwing the externally threaded nut 2 into the sleeve 1 and tightening or unscrewing the sleeve 1.
  • the outer surface of the sleeve 1, the outer surface of the connecting rib and the outer surface of the engaging member are plated with a rustproof layer (not shown) for improving the corrosion resistance of the sleeve 1, the connecting rib and the engaging member.
  • the service life of the internal snap-fit connection device and the connection structure of the sleeve is extended, and the connection strength and stability of the internal snap-fit connection device and the connection structure thereof are improved.
  • the inner wall of the sleeve 1 is provided with an anti-slip pattern 13, and after the cement slurry is solidified inside the sleeve 1, the friction between the cement slurry and the inner wall of the sleeve 1 is increased to prevent the cement slurry and the inner wall of the sleeve 1. Relative sliding between.
  • the sleeve internal connecting device and the connecting structure thereof are different from the first embodiment in that, as shown in FIG. 4, the engaging member is axially abutted against the circlip 4, and the inner wall of the two ends of the sleeve 1 is opened. A snap groove 14 for axially abutting the snap spring 4 is engaged.
  • the expanding head 31 is firstly inserted into the sleeve 1, and then the axial abutting circlip 4 is placed on the connecting reinforcing bar 3, and then the axial abutting circlip 4 is snap-fitted to the engaging groove 14.
  • the expanding head 31 moves in the direction in which the sleeve 1 is pulled out, it can abut against the axially abutting circlip 4, and the expansion head 31 is restricted from pulling out of the sleeve 1.
  • the sleeve internal connecting device and the connecting structure thereof are different from the second embodiment in that, as shown in FIG. 6 , the inner ring of the axial abutting circlip 4 is fixedly connected with the anti-dropping blade 41 for preventing the detachment
  • the ratchet 41 is inclined in a direction close to the center axis of the sleeve 1 toward the center of the sleeve 1, and the expansion head 31 is inserted into the sleeve 1 to abut against the anti-seismic blade 41, and the anti-dropping blade 41 is directed toward The force away from the central axis of the sleeve 1 pushes the anti-dropping blade 41 to elastically deform away from the central axis of the sleeve 1.
  • the anti-detachment ratchet 41 recovers deformation.
  • the movement of the expansion head 31 in the direction in which the sleeve 1 is pulled out is restricted.
  • the expansion head 31 is pressed against the detachment ratchet 41 when moving in the direction of pulling out the sleeve 1 , and the detachment prevention blade 41 and the axial abutment circlip 4 are elastically deformed in the direction in which the sleeve 1 is pulled out.
  • the anti-dropping blade 41 can always maintain an axial contact with the expanding head 31 after being elastically deformed by receiving the pressing force, and prevents the expanding head 31 from pulling out of the sleeve 1 through the axial abutting retaining spring 4.
  • the enlarged head 31 is provided with a round table 32 toward one end of the insertion sleeve 1, and the smaller end of the round table 32 faces the direction of the insertion sleeve 1, facilitating the opening and preventing of the sleeve 1 during insertion.
  • the ratchet 41 is adapted to abut the snap spring 4 through the axial direction.
  • the sleeve internal snap-on connecting device and the connecting structure thereof are different from the second embodiment in that, as shown in FIG. 8, the engaging member is a radial locking circlip 5, and the radial locking circlip 5 is a cone.
  • the smaller end of the radial locking circlip 5 faces the center of the sleeve 1.
  • the inner ring of the radial locking circlip 5 is provided with a deformation-retaining notch 51 for facilitating the radial locking of the inner ring of the circlip 5 After being subjected to the axial force, it is bent and deformed in the axial direction.
  • the frictional resistance between the radial locking circlip 5 and the radial locking circlip 5 causes the inner ring of the radial locking circlip 5 to elastically deform in the direction of pulling out the sleeve 1, and the squeezing between the radial locking circlip 5 and the connecting reinforcing bar 3
  • the frictional resistance between the radial locking circlip 5 and the connecting rebar 3 increases, thereby restricting the movement of the connecting rebar 3 in the direction in which the sleeve 1 is pulled out.
  • the sleeve internal snap-on connecting device and the connecting structure thereof are different from the fourth embodiment in that, as shown in FIG. 10, at least two radial locking springs 5 are disposed on both ends of the sleeve 1 It is used to improve the ability to connect the connecting bars 3 in the axial direction.
  • the sleeve internal snap-on connecting device and its connecting structure are different from Embodiment 5 in that, as shown in FIG. 11, the engaging member is a common reinforcing bar 6.
  • the radial locking circlip 5 can restrict the movement of the ordinary reinforcing steel 6 in the direction of pulling out the sleeve 1 by increasing the frictional force between it and the ordinary reinforcing steel 6, and the ordinary reinforcing steel 6 is more convenient for installation.
  • the sleeve internal connecting device and the connecting structure thereof are different from the third embodiment in that, as shown in FIG. 12, the sleeve 1 is provided with a peg hole 15, and in combination with FIG. 13, the sleeve is internally engaged.
  • the connecting structure further comprises a connecting peg 7 and a beam body.
  • the connecting peg 7 is inserted into the top hole of the peg and can be fixedly connected with the beam body to pre-fix the sleeve 1.
  • the sleeve 1 and the connecting body are connected.
  • the relative position between the ribs cannot be changed. After the cement slurry solidifies, the assembly accuracy between the sleeve 1 and the connecting rib is higher, and the central axis of the sleeve 1 is more coincident with the central axis of the connecting rib.
  • the beam body may be a sill wall or an I-beam 8 .
  • the beam body is made of an I-beam 8 and the connecting stud 7 is welded to the I-beam 8 .
  • the sleeve internal connecting device and the connecting structure thereof are different from the third embodiment in that, as shown in FIG. 14, the outer ring of the axial abutting circlip 4 is fixedly connected with the mounting ratchet 42 and the mounting ratchet 42 is evenly distributed around the center circumference of the axially abutting circlip 4 .
  • the mounting ratchet 42 is inclined away from the center of the sleeve 1 in a direction away from the center axis of the sleeve 1; during installation of the axially abutting snap spring 4 into the interior of the sleeve 1, the ratchet 42 and the sleeve are mounted The inner wall of the cylinder 1 abuts, and the mounting ratchet 42 is elastically deformed toward the reverse of the central axis of the sleeve 1 by the pressing force of the inner wall of the sleeve 1, and is mounted after the mounting ratchet 42 slides into the engaging groove 14. The ratchet piece 42 is restored to elastic deformation and inserted into the engaging groove 14 to restrict axial movement of the retaining ring spring 4 along the axial direction of the sleeve 1.
  • the sleeve internal connecting device and the connecting structure thereof are different from the third embodiment in that, as shown in FIG. 16, the inner hole of the sleeve 1 is stepped and has a stepped hole, and the inner diameter of both ends of the sleeve 1 is larger than The inner diameter of the middle portion of the sleeve 1 and the inner wall having a larger inner diameter at both ends of the sleeve 1 are provided with the engaging grooves 14.
  • the outer diameter of the axial abutting circlip 4 is larger than the outer diameter of the sleeve 1 and smaller than the inner diameter of the sleeve 1, and the axial abutting circlip 4 can be inserted into the sleeve 1 from both ends of the sleeve.
  • the sleeve internal snap-fit connection device further includes an axial anti-offset spring 101, and the outer ring of the axial anti-offset spring 101 is engaged in the latching groove 14, and the axial anti-offset spring 101 is inside.
  • the diameter of the ring is smaller than the diameter of the outer ring of the axially abutting the circlip 4, and after the installation, the axial abutting circlip 4 abuts between the anti-off circlip spring 101 and the end surface of the middle step of the sleeve 1, axially preventing
  • the detaching spring 101 can restrict the axial abutment of the circlip 4 from moving in the axial direction of the sleeve 1 away from the center of the sleeve 1.
  • the sleeve internal connecting device and the connecting structure thereof are different from the fourth embodiment in that, as shown in FIG. 18, the sleeve 1 is fixedly connected with a blocking piece 102, and the blocking piece 102 is located between the two engaging members.
  • the snap connector may be the radial lock circlip 5 in this embodiment.
  • the lower end of the sleeve 1 is first sleeved on the connecting reinforcing bar 3 above the lower wall, and the lower surface of the blocking piece 102 can be combined with The connecting steel bars 3 below abut, so that the position of the connecting steel bars 3 into the inner part of the sleeve 1 is more accurate, and then the upper wall is hoisted and the connecting steel bars 3 on the upper wall are inserted into the upper end of the sleeve 1, in the upper wall Concrete is poured between the lower wall and the concrete, and the concrete flows into the interior of the sleeve 1 and fills the space between the two walls. After solidification, the internal snap-fit connection of the sleeve is fixed and the two walls are reinforced.
  • the flap 102 is a mesh structure for facilitating the flow of concrete, and is not limited to a mesh structure, and has a structure through which concrete can pass, such as an opening.
  • the sleeve internal connecting device and the connecting structure thereof are different from the embodiment 10 in that, as shown in FIG. 20, the sleeve 1 is fixedly connected with a pair of blocking pieces 102, and the two blocking pieces 102 are respectively fixedly connected. At both ends of the sleeve 1 and between the two radial locking clips 5 are located.
  • the two flaps 102 can be kept at a small distance from the end faces of the sleeve 1 respectively, so as to prevent the sleeve 1 from being over-joined on the connecting reinforcing bars 3 below. Extending into the sleeve 1 (ie the length of the connecting bar 3 extending into the sleeve 1 is too large).
  • the sleeve internal snap-on connecting device and its connecting structure are different from the embodiment 9 in that the axial retaining clip spring 101 is replaced with the limiting bolt 103 as shown in FIG. Specifically, a limit bolt hole is symmetrically formed on the wall of the sleeve 1 , and after the limit bolt 103 is screwed into the limit bolt hole, the axial abutment retaining spring 4 is clamped, thereby limiting the axial abutment circlip 4 moves in the axial direction of the sleeve 1 away from the center of the sleeve 1.
  • the installation method of the internal snap-in connection structure of the sleeve includes the following steps:
  • S1 also includes the following steps:
  • the connecting rib is connected to the reinforcing bar 3, the engaging member is an externally threaded nut 2, and the connecting reinforcing bar 3 pieces are inserted into the sleeve 1;
  • A2 The external thread nut 2 is placed on the connecting steel bar 3;
  • A3 The externally threaded nut 2 is rotationally snapped inside the sleeve 1.
  • the mounting method of the internal snap-fit connection structure of the sleeve is different from that of Embodiment 12 in that S1 includes the following steps:
  • the connecting rib is a common reinforcing bar 6, the engaging member is a radial locking circlip 5, and the radial locking circlip 5 is engaged in the engaging groove 14;
  • the mounting method of the internal snap-fit connection structure of the sleeve is different from that of Embodiment 13 in that S1 includes the following steps:
  • the expansion head 31 is inserted into the sleeve 1 through the inner side of the axially abutting circlip 4 .

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Abstract

一种套筒内部卡接式连接装置及其连接结构以及其安装方法，连接装置包括套筒（1）和卡接件，卡接件可为外螺纹螺母（2）、轴向抵接卡簧（4）或径向锁紧卡簧（5）；连接结构包括连接装置及连接筋，连接筋从套筒（1）的端部插入套筒（1）内部，卡接件用于限制插入在套筒（1）内部的连接筋朝拔出套筒（1）的方向运动；安装方法包括将连接筋卡接在套筒（1）内部，向套筒（1）内部浇筑水泥浆。套筒（1）上开设有注浆孔（11），通过注浆孔（11）和套筒（1）两端的端口向套筒（1）内部注入水泥浆，可提高套筒（1）与连接筋之间的连接强度。

Description

套筒内部卡接式连接装置及其连接结构以及其安装方法 技术领域
本发明涉及钢筋连接结构，特别涉及一种套筒内部卡接式连接接结构。
背景技术
目前，装配式混凝土结构建筑，预制构件的连接方法，特别是竖向构件(预制墙板/柱)的竖向钢筋连接方式主要有：1)预埋件焊接连接、2)预埋件螺栓连接、3)钢筋套筒灌浆连接三种连接方式。
1)预埋件焊接连接是连接钢板预置在构件连接部位，预制构件安装就为后，将构件间相邻的预埋钢板焊接连接成一体的方式连接。
优点：安装操作简单；缺点:因焊接工艺原因使连接钢板性能发生脆性改变，造成钢板韧性差/易开裂/连接强度低、结构连接整体性/气密性/抗震性差、防腐/耐久性差；现在属于淘汰技术，市场应用应用范围小。
2)预埋件螺栓连接方法是将预埋钢板预留螺栓孔，并在安装部位预留安装螺栓，预置构件安装时将预留螺栓插入预置构件的预埋钢板的螺栓孔内用螺母紧固。优点是连接强度比焊接强度高、缺点：成本高、结构连接整体性/气密性/抗震性差、防腐/耐久性差；市场应用范围小。
3)钢筋套筒灌浆连接：如图21和图22所示，灌浆套筒包括两端开口的套筒和安装在套筒侧壁上的进浆口91和出浆口92。套筒预埋在上部构件93中，上部构件的预埋筋94插入套筒内，套筒进浆口和出浆口预留在上部构件的外侧。安装时，下部构件95凸出的插接筋96插入套筒内；构件安装定位后，将上部构件和下部构件的接缝97进行填塞，然后从进浆孔注入灌浆料，使钢筋与套筒结合，起到连接作用。
优点：连接钢筋插入套筒后通过灌浆使钢筋处于密封环境解决了
防腐/耐久性问题、连接强度优于以上焊接和栓接的两种方式。
缺点：实际应用中，钢筋套筒灌浆连接技术存在以下问题需要改进：1.受钢筋变形、位移、安装间隙小等因素影响施工操作难度大；2.漏浆问题容易发生且无法质检；3.操作工艺复杂，需要专用设备、工具、材料、人员；4.成本高、质量难以控制；4.影响灌浆料质量的因素多(材料、水灰比、搅拌、注浆、漏浆、人员操作、应用时间等)，质量控制难度大；5.由于钢筋套筒灌浆连接技术是通过灌浆料将钢筋与套筒粘合，利用摩擦力原理与作用实现的钢筋连接。所以灌浆料作为连接介质，起到了连接质量的决定性作用，必须灌浆饱 满、无漏浆、无收缩，但是，实际应用过程中特别是竖向构件连接(容易漏浆、且无法质检)很难保证连接质量，质量可控性差；连接质量的好坏直接影响钢筋的连接强度，形成无效连接(钢筋抽芯现象)，造成建筑安全隐患。
另外，即使在钢筋套筒灌浆连接质量没有问题的情况下，结构连接也存在着一个无法解决的技术问题：竖向混凝土预制构件结构连接整体性问题，也就是预制构件底部与叠合板现浇层间的水平连接缝问题。因为竖向预制构件安装时构件底部的砂浆(粘合/找平层)强度与低于预制构件混凝土强度，造成受力点薄弱，影响混凝土结构的整体性差，抗震性低的问题。
发明内容
本发明的目的是提供一种套筒内部卡接式连接装置及其连接结构以及其安装方法，其优点是可以提高连接钢筋与套筒之间的连接强度，且便于安装。
本发明的上述技术目的是通过以下技术方案得以实现的：一种套筒内部卡接式连接装置，包括套筒和卡接件，卡接件卡接在套筒两端的内侧。
本发明进一步设置为：所述卡接件为外螺纹螺母，所述套筒的内壁设有供外螺纹螺母相螺纹连接的内螺纹。
通过上述技术方案，将杆状插接件插入套筒的内部，然后将外螺纹螺母套接在杆状插接件上，再将外螺纹螺母螺纹连接固定在套筒的端部内侧，浇筑水泥浆之后，水泥浆流入套筒内部，凝固之后可将杆状插接件与套筒相固定连接，限制杆状插接件朝拔出套筒的方向运动脱离套筒；外螺纹螺母可承载朝拔出套筒方向的泥浆的作用力，提高杆状插接件与套筒之间的连接强度。
本发明进一步设置为：所述外螺纹螺母可沿径向拆分为两半。
通过上述技术方案，在先将连接钢筋套接在套筒内部的情况下，可以将两半外螺纹螺母拼合套接在杆状插接件上，然后再旋转固定在套筒内，便于安装。
本发明进一步设置为：所述外螺纹螺母的端面上开设有扭转孔。
本发明进一步设置为：所述卡接件为轴向抵接卡簧，套筒内壁上开设有供轴向抵接卡簧卡接的卡接槽。
本发明进一步设置为：所述轴向抵接卡簧的内圈固定连接有防脱棘片，防脱棘片沿靠近所述套筒中心轴线的方向朝靠近套筒中心的方向倾斜。
本发明进一步设置为：所述卡接件为径向锁紧卡簧，径向锁紧卡簧为圆锥状，径向锁紧卡簧较小的一端朝向靠近所述套筒中心的方向；径向锁紧卡簧内圈开设有变形预留缺 口，变形预留缺口绕锁紧卡簧的中心圆周均匀分布；所述套筒内壁上开设有供径向锁紧卡簧卡接的卡接槽。
通过上述技术方案，连接筋朝拔出套筒的方向运动时，径向锁紧卡簧与预埋卡接件之间存在一定的摩擦力，径向锁紧卡簧内圈受到朝向拔出套筒方向的作用力并朝拔出套筒方向发生弹性变形，径向锁紧卡簧内圈与连接筋之间的挤压作用力增大，径向锁紧卡簧内圈与连接筋之间的摩擦阻力增大，可限制连接筋朝拔出套筒的方向运动，提高连接筋与套筒之间的连接强度。
本发明进一步设置为：所述径向锁紧卡簧在所述套筒的两端均分别设置有至少两个。
通过上述技术方案，多个径向锁紧卡簧在受到朝拔出套筒方向的作用力后，均可朝拔出套筒的方向发生弹性变形，增大与杆状插接件之间的摩擦阻力，且提高了径向锁紧卡簧的承载能力，进一步提高套筒与杆状插接件之间的连接强度。
本发明进一步设置为：所述径向锁紧卡簧外圈固定连接有安装棘片，安装棘片沿远离所述套筒中心轴线的方向朝远离套筒中心的方向倾斜。
本发明进一步设置为：所述套筒上开设有注浆孔。
本发明进一步设置为：所述套筒的表面和/或卡接件的表面镀有防锈层。
本发明进一步设置为：所述套筒内壁上设有防滑纹。
一种套筒内部卡接式连接结构，包括上述的套筒内部卡接式连接装置以及连接筋，连接筋可从所述套筒的端部插入套筒内部；所述卡接件用于限制插入在套筒内部的连接筋朝拔出套筒的方向运动。
通过上述技术方案，连接筋通过卡接件卡接在套筒内部，连接筋预埋固定在两个需要连接的墙体相互靠近的端面上，安装比较简便；向套筒内部浇筑水泥浆并待水泥浆凝固之后，水泥浆可将连接筋、卡接件以及套筒固定连接在一起，提高连接筋与套筒之间的连接强度，从而提高两个墙体之间的连接强度。
本发明进一步设置为：所述连接筋为连接钢筋，连接钢筋一端固定连接有扩大头，扩大头的径向尺寸大于所述连接钢筋的径向尺寸，卡接件用于沿所述套筒的轴向抵触阻碍位于套筒内部的扩大头朝拔出套筒的方向运动。
本发明进一步设置为：所述扩大头朝向插入所述套筒的一端设有圆台面，圆台面较小的一端朝向插入套筒的方向。
通过上述技术方案，连接钢筋插入套筒的过程中，圆台面与卡接件相抵接，圆台面 可将卡接件的内圈朝远离套筒中心轴线的方向撑开，便有将扩大头穿过卡接件内圈插入套筒。
本发明进一步设置为：所述连接筋为普通钢筋。
本发明进一步设置为：套筒内部卡接式连接结构还包括连接栓钉，所述套筒上开设有供连接栓钉插接的栓钉孔。
本发明进一步设置为：套筒内部卡接式连接结构还包括梁体，所述连接栓钉与梁体相固定连接。
一种套筒内部卡接式连接结构的安装方法，包括以下步骤：
S1：将连接筋卡接在套筒内部；
S2：向套筒内部浇筑水泥浆。
本发明进一步设置为：所述S1还包括以下步骤：
A1：连接筋为连接钢筋，卡接件为外螺纹螺母，将连接钢筋件插入套筒；
A2：将外螺纹螺母套在连接钢筋上；
A3：将外螺纹螺母旋转卡接在套筒内部。
本发明进一步设置为：所述S1还包括以下步骤：
B1：连接筋为普通钢筋，卡接件为径向锁紧卡簧，将径向锁紧卡簧卡接在卡接槽内；
B2：使普通钢筋穿过径向锁紧卡簧的内侧插入套筒。
本发明进一步设置为：所述S1还包括以下步骤：
C1：连接筋为连接钢筋，卡接件为轴向抵接卡簧，将轴向抵接卡簧卡接在卡接槽内；
C2：使扩大头穿过轴向抵接卡簧的内侧插入套筒。
综上所述，本发明具有以下有益效果：
1、连接筋通过卡接件卡接在套筒内部，连接筋预埋固定在两个需要连接的墙体相互靠近的端面上，安装比较简便；
2、向套筒内部浇筑水泥浆并待水泥浆凝固之后，水泥浆可将连接筋、卡接件以及套筒固定连接在一起，提高连接筋与套筒之间的连接强度，从而提高两个墙体之间的连接强度；
3、径向锁紧卡簧可对杆状的连接筋进行锁紧限制连接筋拔出套筒，方便于安装；
4、注浆孔便于水泥浆流入套筒内部，水泥浆更容易充满套筒内部空间，提高水泥浆凝固后的承载能力，提高套筒与连接筋之间的连接强度。
附图说明
图1是实施例1中体现套筒结构的示意图；
图2是实施例1中体现套筒内部卡接式连接装置及其连接结构的安装结构示意图；
图3是实施例1中体现外螺纹螺母结构的示意图；
图4是实施例2中体现套筒内部卡接式连接装置及其连接结构安装结构的示意图；
图5是实施例2中体现轴向抵接卡簧结构的示意图；
图6是实施例3中体现轴向抵接卡簧结构的示意图；
图7是实施例3中体现防脱棘片结构的示意图；
图8是实施例4中体现径向锁紧卡簧结构的示意图；
图9是实施例4中体现变形预留缺口结构的示意图；
图10是实施例5中体现套筒内部卡接式连接装置及其连接结构的安装结构的示意图；
图11是实施例6中体现普通钢筋结构的示意图；
图12是实施例7中体现栓钉孔结构的示意图；
图13是实施例7中体现套筒内部卡接式连接装置及其连接结构安装结构的示意图；
图14是实施例8中体现安装棘片结构的示意图；
图15是实施例8中体现安装棘片与卡接槽之间装配关系的示意图；
图16是实施例9中体现锁紧卡簧结构的示意图；
图17是实施例9中体现轴向防脱卡簧结构的示意图；
图18是实施例10中体现挡片结构的示意图；
图19是实施例10中体现套筒内部卡接式连接结构的工作原理示意图；
图20是实施例11中体现双挡片安装结构的示意图；
图21是现有技术中体现套筒连接结构的示意图；
图22是现有技术中体现套筒结构的示意图；
图23是实施例12中体现限位螺栓卡接结构的示意图。
图中，
1、套筒；11、注浆孔；12、内螺纹；13、防滑纹；14、卡接槽；15、栓钉孔；
2、外螺纹螺母；21、扭转孔；
3、连接钢筋；31、扩大头；32、圆台面；
4、轴向抵接卡簧；41、防脱棘片；42、安装棘片；
5、径向锁紧卡簧；51、变形预留缺口；
6、连接钢筋；
7、连接栓钉；
8、工字钢梁；
91、进浆口；92、出浆口；93、上部构件；94、预埋筋；95、下部构件；96、插接筋；97、接缝；
101、轴向防脱卡簧；
102、挡片；
103、限位螺栓。
具体实施方式
以下结合附图对本发明作进一步详细说明。其中相同的零部件用相同的附图标记表示。需要说明的是，下面描述中使用的词语“前”、“后”、“左”、“右”、“上”、“下”、“底面”和“顶面”指的是附图中的方向，词语“内”和“外”分别指的是朝向或远离特定部件几何中心的方向。
实施例1
套筒内部卡接式连接装置及其连接结构，如图1所示，套筒1内部卡接式连接装置为套筒1，套筒1上开设有注浆孔11，便于水泥浆在浇筑时流入套筒1内部并更容易充满套筒1内部空间。结合图2，套筒内部卡接式连接结构包括套筒1、卡接件和连接筋，卡接件为外螺纹螺母2，套筒1的两端内壁上设有供外螺纹螺母2螺纹连接的内螺纹12，外螺纹螺母2可通过内螺纹12旋紧固定连接在套筒1两端的内侧。连接筋为连接钢筋3，连接钢筋3靠近套筒1的一端固定连接有扩大头31，扩大头31的外径尺寸大于连接钢筋3的外径尺寸和外螺纹螺母2的内径尺寸；将扩大头31插入套筒1内部之后，将外螺纹螺栓套接在连接钢筋3上，再将外螺纹螺栓旋紧固定在套筒1内部，可限制扩大头31拔出套筒1，从而使套筒1与连接钢筋3相卡接。将连接钢筋3远离套筒1的一端与需要连接的墙体(图中未画出)端面相固定连接，可使墙体与套筒1相连接，实现通过套筒内部卡接式连接装置及其连接结构对两个墙体进行连接。套筒内部卡接式连接装置及其连接结构的安装简便，浇筑在套筒1内部的水泥浆凝固之后，可使连接钢筋3与套筒1相固定连接，提高套筒1与连接钢筋3之间的连接强度，从而提高套筒内部卡接式连接装置及其连接结构对两个墙体之间的连接强度。
结合图3,外螺纹螺栓沿径向对半分为两半，当连接钢筋3预先固定连接在墙体上时，可先将套筒1两端分别套在两个连接钢筋3上，使扩大头31伸入在套筒1内部，然后再将两半外螺纹螺栓拼合套接在连接钢筋3上，最后再将外螺纹螺栓旋紧固定在套筒1内侧，安装更加灵活方便。
外螺纹螺栓的端面上开设有扭转孔21，便于用角磨机扳手或其他双销扳手与其配 合，便于将外螺纹螺母2旋入套筒1内部并拧紧或拧出套筒1。
套筒1的外表面、连接筋的外表面以及卡接件的外表面均镀有防锈层(图中未画出)，用于提高套筒1、连接筋和卡接件的防腐蚀性能，延长套筒内部卡接式连接装置及其连接结构的使用寿命，提高套筒内部卡接式连接装置及其连接结构的连接强度和稳定性。
如图2所示，套筒1内壁上设有防滑纹13，水泥浆在套筒1内部凝固之后，水泥浆与套筒1内壁之间的摩擦力增大，防止水泥浆与套筒1内壁之间相对滑动。
实施例2
套筒内部卡接式连接装置及其连接结构，与实施例1的不同之处在于，如图4所示，卡接件为轴向抵接卡簧4，套筒1两端的内壁上开设有供轴向抵接卡簧4卡接的卡接槽14。结合图5，先将扩大头31伸入套筒1内部，然后再将轴向抵接卡簧4套在连接钢筋3上，再将轴向抵接卡簧4卡接安装在卡接槽14内，当扩大头31朝拔出套筒1的方向运动时，可与轴向抵接卡簧4相抵接，限制扩大头31拔出套筒1。
实施例3
套筒内部卡接式连接装置及其连接结构，与实施例2的不同之处在于，如图6所示，轴向抵接卡簧4的内圈固定连接有防脱棘片41，防脱棘片41沿靠近套筒1中心轴线的方向朝靠近套筒1中心的方向倾斜，扩大头31插入套筒1的过程中，与防脱棘片41相抵接，对防脱棘片41产生朝远离套筒1中心轴线方向的作用力，推动防脱棘片41朝远离套筒1中心轴线方向发生弹性变形，扩大头31穿过轴向抵接卡簧4之后，防脱棘片41恢复形变以限制扩大头31朝拔出套筒1的方向运动。
结合图7，扩大头31朝拔出套筒1的方向运动时挤压防脱棘片41，防脱棘片41和轴向抵接卡簧4朝拔出套筒1的方向发生弹性变形，防脱棘片41在收到挤压力而发生弹性变形后始终可以保持与扩大头31沿轴向相抵接，防止扩大头31穿过轴向抵接卡簧4拔出套筒1。
如图6所示，扩大头31朝向插入套筒1的一端设有圆台面32，圆台面32较小的一端朝向插入套筒1的方向，便于在插入套筒1的过程中撑开防脱棘片41以便于穿过轴向抵接卡簧4。
实施例4
套筒内部卡接式连接装置及其连接结构，与实施例2的不同之处在于，如图8所示，卡接件为径向锁紧卡簧5，径向锁紧卡簧5为圆锥状，径向锁紧卡簧5较小的一端朝向套筒1中心，结合图9，径向锁紧卡簧5内圈设有变形预留缺口51，便于径向锁紧卡簧5内圈受到轴 向的作用力之后沿轴向弯曲变形。连接钢筋3插入径向锁紧卡簧5内侧之后，径向锁紧卡簧5内侧壁与连接钢筋3外表面相抵接，当连接钢筋3朝拔出套筒1的方向运动时，连接钢筋3与径向锁紧卡簧5之间的摩擦阻力带动径向锁紧卡簧5内圈朝拔出套筒1的方向发生弹性变形，径向锁紧卡簧5与连接钢筋3之间的挤压力增大，径向锁紧卡簧5与连接钢筋3之间的摩擦阻力增大，从而限制连接钢筋3朝拔出套筒1的方向运动。
实施例5
套筒内部卡接式连接装置及其连接结构，与实施例4的不同之处在于，如图10所示，套筒1的两端均卡接设置有至少两个径向锁紧卡簧5，用于提高对连接钢筋3沿轴向承载的能力。
实施例6
套筒内部卡接式连接装置及其连接结构，与实施例5的不同之处在于，如图11所示，卡接件为普通钢筋6。径向锁紧卡簧5可以通过增大其与普通钢筋6之间的摩擦力，从而限制普通钢筋6朝拔出套筒1的方向运动，普通钢筋6更方便于安装。
实施例7
套筒内部卡接式连接装置及其连接结构，与实施例3的不同之处在于，如图12所示，套筒1上开设有栓钉孔15，结合图13，套筒内部卡接式连接结构还包括连接栓钉7和梁体，连接栓钉7插入栓钉顶孔后可与梁体相固定连接，以对套筒1进行预固定，在浇筑水泥浆的过程中，套筒1与连接筋之间的相对位置不容发生改变，水泥浆凝固之后，套筒1与连接筋之间的装配准确度更高，套筒1的中心轴线与连接筋的中心轴线重合度更高。
梁体可以为砼墙或工字钢梁8，优选地，梁体采用工字钢梁8，连接栓钉7与工字钢梁8相焊接固定。
实施例8
套筒内部卡接式连接装置及其连接结构，与实施例3的不同之处在于，如图14所示，轴向抵接卡簧4的外圈固定连接有安装棘片42，安装棘片42绕轴向抵接卡簧4的中心圆周均匀分布。
结合图15，安装棘片42沿远离套筒1中心轴线的方向朝远离套筒1中心的方向倾斜；将轴向抵接卡簧4安装至套筒1内部过程中，安装棘片42与套筒1内壁相抵接，安装棘片42受到套筒1内壁的挤压作用力之后朝靠近套筒1中心轴线的反向发生弹性变形，当安装棘片42滑入至卡接槽14之后，安装棘片42恢复弹性形变，插入卡接槽14内，限制轴向抵接卡簧4沿套筒1的轴向运动。
实施例9
套筒内部卡接式连接装置及其连接结构，与实施例3的不同之处在于，如图16所示，套筒1的内孔为台阶状，呈阶梯孔，套筒1两端的内径大于套筒1的中部的内径，套筒1两端内径较大的内壁上开设有卡接槽14。轴向抵接卡簧4的外径大于套筒1两端的孔径且小于套筒1中部的孔径，轴向抵接卡簧4可从套筒两端插入套筒1内部。结合图17，套筒内部卡接式连接装置还包括轴向防脱卡簧101，轴向防脱卡簧101的外圈卡接在卡接槽14内，轴向防脱卡簧101的内圈直径小于轴向抵接卡簧4的外圈直径，安装好之后，轴向抵接卡簧4抵接夹设在防脱卡簧101和套筒1中部台阶的端面之间，轴向防脱卡簧101可限制轴向抵接卡簧4沿套筒1的轴向朝远离套筒1的中心运动。
实施例10
套筒内部卡接式连接装置及其连接结构，与实施例4的不同之处在于，如图18所示，套筒1内部固定连接有挡片102，挡片102位于两个卡接件之间，卡接件可以是本实施例中的径向锁紧卡簧5。结合图19，在套筒内部卡接式连接装置在竖向工况下使用时，先将套筒1的下端套接在下部墙体上面的连接钢筋3上，挡片102的下表面可与下方的连接钢筋3相抵接，使连接钢筋3伸入套筒1内部的位置更准确，然后将上部墙体吊装起来并将上部墙体上的连接钢筋3插入套筒1上端，在上部墙体和下部墙体之间浇筑混凝土，混凝土流入套筒1的内部和填充两墙体之间的空间，凝固之后对套筒内部卡接式连接装置进行固定并对两个墙体进行加固连接。
优选地，挡片102为网状结构，便于混凝土流过，也不局限于网状结构，具有混凝土能够穿过的结构均可，如开孔等。
实施例11
套筒内部卡接式连接装置及其连接结构，与实施例10的不同之处在于，如图20所示，套筒1的内部固定连接有一对挡片102，两个挡片102分别固定连接在套筒1两端且均位于两个径向锁紧卡簧5之间。当套筒1的长度比较大时，两个挡片102分别与套筒1的端面之间可以保持较小的距离，以免套筒1套接在下方的连接钢筋3上时导致连接钢筋3过度伸入套筒1(即连接钢筋3伸入套筒1的长度过大)。
实施例12
套筒内部卡接式连接装置及其连接结构，与实施例9的不同之处在于，如图23所示，将轴向防脱卡簧101替换为限位螺栓103。具体的是：在套筒1的筒壁上对称开设限位螺栓孔，限位螺栓103拧入限位螺栓孔后，将轴向抵接卡簧4卡住，从而限制轴向抵接卡簧4沿套筒 1的轴向朝远离套筒1的中心运动。
实施例13
套筒内部卡接式连接结构的安装方法，包括以下步骤：
S1：将连接筋卡接在套筒1内部；
S2：向套筒1内部浇筑水泥浆。
其中，S1还包括以下步骤：
A1：连接筋为连接钢筋3，卡接件为外螺纹螺母2，将连接钢筋3件插入套筒1；
A2：将外螺纹螺母2套在连接钢筋3上；
A3：将外螺纹螺母2旋转卡接在套筒1内部。
实施例14
套筒内部卡接式连接结构的安装方法，与实施例12的不同之处在于，S1包括以下步骤：
B1：连接筋为普通钢筋6，卡接件为径向锁紧卡簧5，将径向锁紧卡簧5卡接在卡接槽14内；
B2：使普通钢筋6穿过径向锁紧卡簧5的内侧插入套筒1。
实施例15
套筒内部卡接式连接结构的安装方法，与实施例13的不同之处在于，S1包括以下步骤：
C1：连接筋为连接钢筋3，卡接件为轴向抵接卡簧4，将轴向抵接卡簧4卡接在卡接槽14内；
C2：使扩大头31穿过轴向抵接卡簧4的内侧插入套筒1。
本具体实施例仅仅是对本发明的解释，其并不是对本发明的限制，本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改，但只要在本发明的权利要求范围内都受到专利法的保护。

Claims (24)

  1. 一种套筒内部卡接式连接装置，其特征是：包括套筒(1)和卡接件，卡接件卡接在套筒(1)两端的内侧。
  2. 根据权利要求1所述的套筒内部卡接式连接装置，其特征是：所述卡接件为外螺纹螺母(2)，所述套筒(1)的内壁设有供外螺纹螺母(2)相螺纹连接的内螺纹(12)。
  3. 根据权利要求2所述的套筒内部卡接式连接装置，其特征是：所述外螺纹螺母(2)可沿径向拆分为两半。
  4. 根据权利要求2所述的套筒内部卡接式连接装置，其特征是：所述外螺纹螺母(2)的端面上开设有扭转孔(21)。
  5. 根据权利要求2所述的套筒内部卡接式连接装置，其特征是：所述卡接件为轴向抵接卡簧(4)，套筒(1)内壁上开设有供轴向抵接卡簧(4)卡接的卡接槽(14)。
  6. 根据权利要求5所述的套筒内部卡接式连接装置，其特征是：所述轴向抵接卡簧(4)的内圈固定连接有防脱棘片(41)，防脱棘片(41)沿靠近所述套筒(1)中心轴线的方向朝靠近套筒(1)中心的方向倾斜。
  7. 根据权利要求1所述的套筒内部卡接式连接装置，其特征是：所述卡接件为径向锁紧卡簧(5)，径向锁紧卡簧(5)为圆锥状，径向锁紧卡簧(5)较小的一端朝向靠近所述套筒(1)中心的方向；径向锁紧卡簧(5)内圈开设有变形预留缺口(51)，变形预留缺口(51)绕锁紧卡簧(5)的中心圆周均匀分布；所述套筒(1)内壁上开设有供径向锁紧卡簧(5)卡接的卡接槽(14)。
  8. 根据权利要求7所述的套筒内部卡接式连接装置，其特征是：所述径向锁紧卡簧(5)在所述套筒(1)的两端均分别设置有至少两个。
  9. 根据权利要求7所述的套筒内部卡接式连接装置，其特征是：所述径向锁紧卡簧(5)外圈固定连接有安装棘片(42)，安装棘片(42)沿远离所述套筒(1)中心轴线的方向朝远离套筒(1)中心的方向倾斜。
  10. 根据权利要求1所述的套筒内部卡接式连接装置，其特征是：所述套筒(1)上开设有注浆孔(11)。
  11. 根据权利要求1所述的套筒内部卡接式连接装置，其特征是：所述套筒(1)内壁上设有防滑纹(13)。
  12. 根据权利要求2所述的套筒内部卡接式连接装置，其特征是：所述卡接件为轴向抵接卡簧(4)；所述套筒内(1)内孔为台阶状，套筒(1)两端的内径大于套筒(1)中部的内径，套筒(1)两端内径较大的内壁上开设有卡接槽(14)；套筒内部卡接式连接装置还包括 轴向防脱卡簧(101)，轴向防脱卡簧(101)卡接在卡接槽(14)内；所述轴向抵接卡簧(4)抵接夹设在轴向防脱卡簧(101)和套筒(1)中部台阶的端面之间。
  13. 根据权利要求1所述的套筒内部卡接式连接装置，其特征是：还包括挡片(102)，挡片(102)位于两个所述卡接件之间。
  14. 根据权利要求13所述的套筒内部卡接式连接装置，其特征是：所述挡片(102)具有一对且分别固定连接在所述套筒(1)的两端。
  15. 一种套筒内部卡接式连接结构，其特征是：包括如权利要求1至14中的套筒内部卡接式连接装置以及连接筋，连接筋可从所述套筒(1)的端部插入套筒(1)内部；所述卡接件用于限制插入在套筒(1)内部的连接筋朝拔出套筒(1)的方向运动。
  16. 根据权利要求15所述的套筒内部卡接式连接结构，其特征是：所述连接筋为连接钢筋(3)，连接钢筋(3)一端固定连接有扩大头(31)，扩大头(31)的径向尺寸大于所述连接钢筋(3)的径向尺寸，卡接件用于沿所述套筒(1)的轴向抵触阻碍位于套筒(1)内部的扩大头(31)朝拔出套筒(1)的方向运动。
  17. 根据权利要求16所述的套筒内部卡接式连接结构，其特征是：所述扩大头(31)朝向插入所述套筒(1)的一端设有圆台面(32)，圆台面(32)较小的一端朝向插入套筒(1)的方向。
  18. 根据权利要求17所述的套筒内部卡接式连接结构，其特征是：所述连接筋为钢筋。
  19. 根据权利要求15所述的套筒内部卡接式连接结构，其特征是：套筒内部卡接式连接结构还包括连接栓钉(7)，所述套筒(1)上开设有供连接栓钉(7)插接的栓钉孔(15)。
  20. 根据权利要求19所述的套筒内部卡接式连接结构，其特征是：套筒内部卡接式连接结构还包括梁体，所述连接栓钉(7)与梁体相固定连接。
  21. 一种套筒内部卡接式连接结构的安装方法，其特征是，包括以下步骤：
    S1：将连接筋卡接在套筒(1)内部；
    S2：向套筒(1)内部浇筑水泥浆。
  22. 根据权利要求21所述的套筒内部卡接式连接结构的安装方法，其特征是，所述S1还包括以下步骤：
    A1：连接筋为连接钢筋(3)，卡接件为外螺纹螺母(2)，将连接钢筋(3)件插入套筒(1)；
    A2：将外螺纹螺母(2)套在连接钢筋(3)上；
    A3：将外螺纹螺母(2)旋转卡接在套筒(1)内部。
  23. 根据权利要求22所述的套筒内部卡接式连接结构的安装方法，其特征是，所述S1还包括以下步骤：
    B1：连接筋为普通钢筋(6)，卡接件为径向锁紧卡簧(5)，将径向锁紧卡簧(5)卡接在卡接槽(14)内；
    B2：使普通钢筋(6)穿过径向锁紧卡簧(5)的内侧插入套筒(1)。
  24. 根据权利要求21所述的套筒内部卡接式连接结构的安装方法，其特征是，所述S1还包括以下步骤：
    C1：连接筋为连接钢筋(3)，卡接件为轴向抵接卡簧(4)，将轴向抵接卡簧(4)卡接在卡接槽(14)内；
    C2：使扩大头(31)穿过轴向抵接卡簧(4)的内侧插入套筒(1)。
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