CN-224228114-U - Inner buckling type grouting sleeve

CN224228114UCN 224228114 UCN224228114 UCN 224228114UCN-224228114-U

Abstract

The utility model provides an inner buckling type grouting sleeve, which is arranged on the inner side wall of the lower part of a precast column, wherein each grouting sleeve comprises a grouting sleeve body, a plurality of buckles arranged on the inner side wall of the grouting sleeve body, the lower ends of reinforcing steel bars in the precast column are inserted into the grouting sleeve body from the upper opening of the grouting sleeve body, and the dowel bars at the lower part of the precast column are inserted from the lower opening of the grouting sleeve body and are connected with the buckles in a clamping manner. After grouting material is injected, a tight mechanical engagement effect is formed among the in-column steel bars, the inner buckling structure and the inserted bar grouting material of the prefabricated columns, so that the connection strength and stability between the sleeve and the grouting material and between the grouting material and the in-column steel bars are greatly enhanced.

Inventors

LU WENQING
WANG QIFAN
MA YUEQIANG
LU DONGXING
Shao Haohui
JI JIAMING
YANG JUN

Assignees

上海建工二建集团有限公司

Dates

Publication Date: 20260512
Application Date: 20250228

Claims (10)

1. An internally-fastened grouting sleeve is characterized by comprising a plurality of grouting sleeves arranged on the inner side wall of the lower part of a prefabricated column, wherein each grouting sleeve comprises: the grouting sleeve body is provided with an upper through opening and a lower through opening; The grouting sleeve comprises a grouting sleeve body, a plurality of buckles arranged on the inner side wall of the grouting sleeve body, wherein the lower ends of reinforcing steel bars in the prefabricated columns are inserted into the grouting sleeve body from an upper opening of the grouting sleeve body, and dowel bars at the lower parts of the prefabricated columns are inserted from a lower opening of the grouting sleeve body and are connected with the buckles in a clamping mode.
2. The stab-in grouting sleeve of claim 1, wherein each grouting sleeve is circumferentially spaced along an inner sidewall of a lower portion of the precast column.
3. The internally buckled grouting sleeve of claim 1, wherein the snaps within each grouting sleeve body are symmetrically spaced on the inner sidewall of the grouting sleeve body.
4. A stab-in grouting sleeve as claimed in claim 3, wherein the number of the snap-in symmetrical spacing within each grouting sleeve body is 4.
5. The internal locking grout sleeve of claim 1 wherein each locking buckle comprises: the base plate is fixedly connected to the inner side wall of the grouting sleeve body; The upper fixing support is connected to the upper part of the substrate, a first limiter is arranged on an upper corner of the upper fixing support, far away from the substrate side, a first rocker is fixed on the upper fixing support through a first cam, the first rocker is used for rotating around the first cam, and one end of the first rocker is limited by the first limiter; The device comprises a long plate, a spring, a first rocker, a second rocker, a connecting plate and a connecting plate, wherein one end of the spring is connected to a substrate between an upper fixed support and an upper fixed support, the other end of the spring is connected with one side of the short plate, the other side of the short plate is connected with one side of the long plate, the other side of the long plate is connected with the connecting plate, the other ends of the first rocker and the second rocker are positioned on two sides of the spring and propped against the side, close to the spring, of the long plate, and the connecting plate is used for being clamped with a dowel end plate of a dowel bar at the lower part of a prefabricated column.
6. The grouting sleeve of claim 5, wherein the cross section of the connecting transmission connecting plate is a right triangle, wherein a right-angle side of the right triangle is a short side, the other right-angle side is a long side, the long side is connected with the other side of the long plate, and the short side is clamped at the lower part of the periphery of the dowel bar end plate.
7. The internal locking grout sleeve of claim 6 wherein the angle of the short side to the hypotenuse of a right triangle is 55 to 65 degrees.
8. The internal locking type grouting sleeve as claimed in claim 6, wherein the dowel end plate has a diameter larger than that of the dowel at the lower portion of the precast column so as to form a position where the dowel end plate is engaged with the short side at the lower portion beyond the periphery of the dowel width.
9. The inner fastening grouting sleeve according to claim 5, wherein two ends of the first rocker are arc-shaped, and two ends of the second rocker are arc-shaped.
10. The inner fastening grouting sleeve of claim 9, wherein the contact surface of the first limiter and the arc-shaped end of the first rocker is correspondingly matched M-shaped arc, and the contact surface of the second limiter and the arc-shaped end of the second rocker is correspondingly matched M-shaped arc.

Description

Inner buckling type grouting sleeve Technical Field The utility model relates to an inner buckling type grouting sleeve. Background In prefabricated building construction, the installation and positioning of prefabricated columns are key links. The traditional prefabricated column installation generally needs to guarantee the perpendicularity and stability of the column by means of a large number of diagonal braces, so that a large amount of manpower, material resources and time are consumed for building, adjusting and dismantling the diagonal braces, the diagonal braces can occupy large space on a construction site, certain interference is generated to other construction procedures, and the construction efficiency and the safety and the cleanliness on the site are affected. Disclosure of utility model The utility model aims to provide an inner buckling type grouting sleeve. In order to solve the above problems, the present utility model provides an inner fastening type grouting sleeve, comprising: A plurality of grout sleeves that set up on the inside wall of the lower part of precast column, wherein, every grout sleeve includes: the grouting sleeve body is provided with an upper through opening and a lower through opening; The grouting sleeve comprises a grouting sleeve body, a plurality of buckles arranged on the inner side wall of the grouting sleeve body, wherein the lower ends of reinforcing steel bars in the prefabricated columns are inserted into the grouting sleeve body from an upper opening of the grouting sleeve body, and dowel bars at the lower parts of the prefabricated columns are inserted from a lower opening of the grouting sleeve body and are connected with the buckles in a clamping mode. Further, in the above-mentioned inner buckle type grouting sleeve, each grouting sleeve is disposed at intervals along the circumferential direction of the inner sidewall of the lower portion of the precast column. Further, in the above inner fastening type grouting sleeve, the fastening buckle in each grouting sleeve body is symmetrically arranged on the inner side wall of the grouting sleeve body at intervals. Further, in the above-mentioned inner fastening type grouting sleeve, the number of the fastening symmetrical intervals in each grouting sleeve body is 4. Further, in the above inner fastening type grouting sleeve, each fastening includes: the base plate is fixedly connected to the inner side wall of the grouting sleeve body; The upper fixing support is connected to the upper part of the substrate, a first limiter is arranged on an upper corner of the upper fixing support, far away from the substrate side, a first rocker is fixed on the upper fixing support through a first cam, the first rocker is used for rotating around the first cam, and one end of the first rocker is limited by the first limiter; The device comprises a long plate, a spring, a first rocker, a second rocker, a connecting plate and a connecting plate, wherein one end of the spring is connected to a substrate between an upper fixed support and an upper fixed support, the other end of the spring is connected with one side of the short plate, the other side of the short plate is connected with one side of the long plate, the other side of the long plate is connected with the connecting plate, the other ends of the first rocker and the second rocker are positioned on two sides of the spring and propped against the side, close to the spring, of the long plate, and the connecting plate is used for being clamped with a dowel end plate of a dowel bar at the lower part of a prefabricated column. In the inner buckling type grouting sleeve, the section of the connecting transmission connecting plate is a right triangle, wherein a right-angle side of the right triangle is a short side, the other right-angle side is a long side, the long side is connected with the other side of the long plate, and the short side is clamped at the lower part of the periphery of the dowel bar end plate. Further, in the inner fastening grouting sleeve, an included angle between the short side and the hypotenuse of the right triangle is 55 to 65 degrees. Further, in the above-mentioned inner fastening type grouting sleeve, the diameter of the dowel bar end plate is larger than the diameter of the dowel bar at the lower part of the precast column, so that a position which is clamped with the short side is formed at the lower part of the periphery of the dowel bar end plate beyond the width of the dowel bar. Further, in the inner-buckling grouting sleeve, two ends of the first rocker are arc-shaped, and two ends of the second rocker are arc-shaped. Further, in the inner buckling grouting sleeve, the contact surface of the first limiter and one end of the arc-shaped first rocker is an M-shaped arc which is correspondingly matched, and the contact surface of the second limiter and one end of the arc-shaped second rocker is an M-shaped arc which is correspondingly matc