CN210067238U

CN210067238U - Half grout sleeve

Info

Publication number: CN210067238U
Application number: CN201920568428.4U
Authority: CN
Inventors: 李天�; 敬遂军; 樊嘉; 张乐
Original assignee: Zhengzhou University
Current assignee: Zhengzhou University
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-02-14
Anticipated expiration: 2029-04-24

Abstract

The utility model relates to a half grout sleeve, including the inner wall set up the screw thread section of screw thread, with screw thread section an organic whole transition taper pipe section and with the grout section of transition taper pipe section connection, the grout section is including grout section barrel, the indentation that many outer walls that arrange along the circumferential direction are sunken and the inner wall is outstanding to be formed has on the grout section barrel, it advances thick liquid hole and sleeve exhaust hole to be equipped with the sleeve on the grout section barrel, the sleeve advances to install grout joint on the thick liquid hole, install exhaust joint on the sleeve exhaust hole. The utility model has the advantages that: the semi-grouting sleeve with the structure has high production efficiency and low processing cost; and because grout section barrel and have many sunken and the protruding indentation that forms of inner wall of outer wall that arranges along the circumferential direction on the section barrel, because half grout sleeve is generally all the parcel in concrete structure, compare for the plain noodles with current half grout sleeve outer wall, the wholeness of sleeve and concrete member strengthens greatly, and the reliability of steel bar connection strengthens greatly.

Description

Half grout sleeve

Technical Field

The utility model belongs to assembly type structure construction field specifically is an adopt seamless steel pipe to pass through half grout sleeve of draw machine processing preparation.

Background

Under the background of the vigorous push of green fabricated buildings in China, the fabricated concrete structure and the fabricated steel structure are two main structural forms at present. The traditional steel structure has certain assembly property, while the assembly type steel structure mainly reduces field welding through mechanical connection modes such as high-strength bolts and the like, reduces the wet work amount of concrete through prefabrication of steel concrete combined members, and further improves the assembly rate and the prefabrication rate; the fabricated concrete structure generally hoists the precast concrete members in place, performs reinforcement connection on site, and fills gaps among the members with gel materials (such as concrete, grouting materials and the like) to complete the assembly of the structure integrally.

The steel bar grouting sleeve is a common connecting piece for realizing steel bar connection of a reinforced concrete structure. The steel bar and sleeve grouting connection is characterized in that a single ribbed steel bar is inserted into a metal sleeve, grouting material mixture is injected into the metal sleeve, the mixture is hardened to form a whole body, force transmission is realized, and the steel bar is in butt joint connection, so that the steel bar and sleeve grouting connection is widely applied to steel bar connection of a concrete assembly structure. The steel bar sleeve grouting connection is divided into a full grouting sleeve and a half grouting sleeve according to the actual connection mode. The full grouting sleeve is a grouting sleeve with reinforcing steel bars at two ends connected by sleeve grouting; one end of the semi-grouting sleeve is connected with the steel bar in a mechanical connection mode, and the other end of the semi-grouting sleeve is connected with the steel bar in a sleeve grouting mode.

However, the geometric form of the existing half grouting sleeve is complicated, for example, the half grouting sleeve disclosed in CN 207672868U has an annular rib inside and a smooth outside, so that only casting or milling machining with steel bars or thick pipes is adopted, the cast metal sleeve has high requirements for metal hot working technology, and the parts are rough in molding and heavy in size; the sleeve of the milling machine processing part of the steel bar or the thick pipe has good quality, but has high production cost, low efficiency and large material consumption.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a half grout sleeve.

In order to solve the technical problem, the technical scheme of the utility model as follows:

half grout sleeve sets up the screw thread section of screw thread, with screw thread section body coupling's transition taper pipe section and the grout section of being connected with transition taper pipe section including the inner wall, the grout section is including grout section barrel, the indentation that many outer wall sunken and the inner wall protrusion that arrange along circumferential direction formed has on the grout section barrel, it advances thick liquid hole and sleeve exhaust hole to be equipped with the sleeve on the grout section barrel, the sleeve advances to install grout joint on the thick liquid hole, install exhaust joint on the sleeve exhaust hole.

Preferably, a pipe collecting section is arranged at one end, far away from the threaded section, of the grouting section cylinder, the inner diameter of the pipe collecting section is smaller than that of the grouting section cylinder, and the outer diameter of the pipe collecting section is smaller than that of the grouting section cylinder.

Preferably, the fixed reinforcing hoop is sleeved on the outer peripheral surface of the pipe collecting section.

The utility model has the advantages that: in the manufacturing process of the semi-grouting sleeve with the structure, the steel pipe is rolled and contracted by a roller press and a pipe contracting machine, then threads are machined, a sleeve grout inlet hole and a sleeve vent hole are drilled, and a grouting joint and a vent joint are installed, so that the semi-grouting sleeve is very simple to machine and low in machining cost; and because grout section barrel and have many sunken and the protruding indentation that forms of inner wall of outer wall that arranges along the circumferential direction on the section barrel, because half grout sleeve is generally all the parcel in concrete structure, compare for the plain noodles with current half grout sleeve outer wall, the wholeness of sleeve and concrete member strengthens greatly, and the reliability of steel bar connection strengthens greatly.

Furthermore, a pipe collecting section is arranged at one end, far away from the threaded section, of the grouting section cylinder body, so that an embedding structure is formed after the grout in the cylinder body is hardened, and the connection firmness is enhanced.

Furthermore, the fixed reinforcement hoop is sleeved on the outer peripheral surface of the pipe folding section, the reinforcement hoop is generally a high-strength steel pipe, and the purpose is to further enhance the strength of the pipe folding section and prevent the pipe folding section from being unfolded and failed under the action of tension.

Drawings

Fig. 1 is a schematic view of a half grouting sleeve in embodiment 1 of the present invention.

Fig. 2 is a schematic view of a using state of a half grouting sleeve in embodiment 1 of the present invention.

Detailed Description

An embodiment of a semi-grouting sleeve is shown in fig. 1 and fig. 2, and includes a thread section 1 with threads on the inner wall, a transition taper pipe section 2 integrally connected with the thread section, and a grouting section integrally connected with the transition taper pipe section, where the grouting section includes a grouting section cylinder 3, and the grouting section cylinder has a plurality of indentations formed by outer wall depressions 5 and inner wall protrusions 9 arranged along the circumferential direction, four in this embodiment, and other embodiments can be increased or decreased according to specific requirements, the grouting section cylinder is provided with a sleeve grout inlet hole 10 and a sleeve vent hole 8, the sleeve grout inlet hole 10 is arranged at a position close to the take-up pipe section, the sleeve vent hole 8 is arranged at a position close to the transition taper pipe section 2, the sleeve grout inlet hole is provided with a grouting joint 6, the sleeve vent hole is provided with an exhaust joint 4, in this embodiment, a welding manner is adopted, and the end of the grouting section, receive the internal diameter of pipeline section and be less than the internal diameter of grout section barrel, the external diameter of receiving the pipeline section is less than the external diameter of grout section barrel, receive and establish fixed reinforcement hoop 7 on the outer peripheral face of pipeline section 11, receive pipeline section 11 and make and form after the barrel internal pulp hardens and inlay solid structure, the firm degree of connection has been strengthened, the fixed reinforcement hoop is established to the cover on the outer peripheral face of receiving the pipeline section, the reinforcement hoop generally is the high strength steel pipe, the purpose is the intensity of further reinforcing pipeline section, prevent to receive the pipeline section under the pulling force effect and strut the inefficacy.

When the concrete grouting device is used, the threaded section is screwed into a reinforcing steel bar and is embedded into concrete together with the semi-grouting sleeve, the sleeve exhaust hole and the sleeve grout inlet hole are communicated with the outside, during splicing, one end with a pipe receiving section is inserted into another splicing piece, the reinforcing steel bar of the other splicing piece is inserted into the semi-grouting sleeve, then grouting is performed in the semi-grouting sleeve through the sleeve grout inlet hole, and connection can be achieved after curing and solidification.

In the manufacturing process of the semi-grouting sleeve, the steel pipe is rolled and contracted by a roller press and a pipe contracting machine, then threads are machined, a sleeve grout inlet hole and a sleeve vent hole are drilled, and a grouting joint and a vent joint are installed, so that the semi-grouting sleeve is very simple to machine and low in machining cost; and because grout section barrel and have many sunken and the protruding indentation that forms of inner wall of outer wall that arranges along the circumferential direction on the section barrel, because half grout sleeve is generally all the parcel in concrete structure, compare for the plain noodles with current half grout sleeve outer wall, the wholeness of sleeve and concrete member strengthens greatly, and the reliability of steel bar connection strengthens greatly.

The manufacturing method of the semi-grouting sleeve comprises the following steps:

step 1, rolling and impressing a grouting section through a roller press;

step 2, processing a transition taper pipe section, a thread section and a pipe collecting section through a pipe reducing machine;

step 3, machining threads on the inner wall of the threaded section;

step 4, the reinforcing hoop is sleeved on the pipe collecting section after being heated and expanded, and is contracted and hooped after being cooled;

and 5, drilling a sleeve slurry inlet hole and a sleeve exhaust hole in the grouting section, then installing a grouting joint on the slurry inlet hole, and installing an exhaust joint on the exhaust hole, wherein the specific installation mode is welding.

Claims

1. Half grout sleeve, its characterized in that: set up the screw thread section of screw thread, with screw thread section an organic whole transition taper pipe section of being connected and the grout section of being connected with transition taper pipe section including the inner wall, the grout section includes grout section barrel, the indentation that many outer wall depressions and the inner wall that arrange along circumferential direction are protruding to be formed has on the grout section barrel, it advances thick liquid hole and sleeve exhaust hole to be equipped with the sleeve on the grout section barrel to grout, the sleeve advances to install grout joint on the thick liquid hole, install exhaust joint on the sleeve exhaust hole.

2. The semi-grouted sleeve of claim 1, wherein: and a pipe collecting section is arranged at one end, far away from the threaded section, of the grouting section cylinder, the inner diameter of the pipe collecting section is smaller than that of the grouting section cylinder, and the outer diameter of the pipe collecting section is smaller than that of the grouting section cylinder.

3. The semi-grouted sleeve of claim 2, wherein: and a fixed reinforcing hoop is sleeved on the outer peripheral surface of the pipe collecting section.