Fabricated building grouting sleeve
By using a combination structure of pin fixing sleeve and steel bar sleeve in the grouting sleeve of prefabricated building, the problem of uneven grouting material caused by steel bar displacement is solved, and the load-bearing capacity and safety of the structure are improved.
Patent Information
- Application Number
- CN202520080305.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Existing grouting sleeves for prefabricated buildings are prone to causing steel bar displacement during the insertion process, resulting in uneven distribution of grouting material, reduced structural bearing capacity, and increased safety hazards.
The structure adopts a combination of pin fixing sleeve and rebar sleeve. The fixing pin contacts the outside of the rebar and uses the extrusion force of the fixing shell and sleeve to fix the rebar in the sleeve, ensuring uniform distribution of grout.
This effectively prevents the reinforcing bars from shifting inside the sleeve, ensures uniform distribution of grout, and improves the load-bearing capacity and safety of the structure.
Smart Images

Figure CN223767049U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging equipment technology, specifically to a prefabricated building grouting sleeve. Background Technology
[0002] This technology is applicable to a variety of construction engineering fields, including but not limited to reinforced concrete structure engineering, steel structure engineering, bridge engineering, offshore oil exploration platform engineering and near-shore wind power towers, etc. The grouting material used is usually cement as the basic material.
[0003] Current prefabricated building grouting sleeves connect the exposed reinforcing bars of precast beams or columns by inserting them into the sleeves and injecting grout through high-pressure grouting equipment. However, when injecting grout into the sleeves, the accuracy of the insertion depth and position of the reinforcing bars may be insufficient, leading to the displacement of the reinforcing bars within the sleeves. This results in uneven distribution of the injected grout within the sleeves, and the displacement of the reinforcing bars can cause uneven grout thickness in some areas, reducing the structural bearing capacity and increasing safety hazards. Utility Model Content
[0004] The purpose of this utility model is to provide a prefabricated building grouting sleeve to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a prefabricated building grouting sleeve, comprising a building grouting sleeve assembly and a rebar internal fixing assembly, characterized in that: the building grouting sleeve assembly includes: a sleeve body, a rebar body inserted into the sleeve body, a first fixing pin and a second fixing pin contacting the outer end of the rebar body, the second fixing pin being connected through the sleeve body, a through hole being provided inside the sleeve body, and the first fixing pin and the second fixing pin being connected through the pin fixing sleeve inside the sleeve body.
[0006] As a further preferred embodiment of this technical solution, the inside of the pin fixing sleeve is provided with a groove, the pin fixing sleeve passes through the reinforcing bar, and the groove of the pin fixing sleeve is engaged with the upper and lower ends of the sleeve body.
[0007] As a further preferred embodiment of this technical solution, a steel bar sleeve is fixedly installed at one end of the pin fixing sleeve, and the inside of the steel bar sleeve is fitted over the outside of the steel bar body.
[0008] As a further preferred embodiment of this technical solution, the outer side of the reinforcing bar sleeve is provided with a threaded hole, and the outer side of the pin fixing sleeve is fitted with a fixing shell.
[0009] As a further preferred embodiment of this technical solution, a sleeve is fixedly installed at one end of the fixed outer shell, and the inner side of the sleeve is fitted onto the outer end of the reinforcing bar sleeve.
[0010] As a further preferred embodiment of this technical solution, the outer end of the sleeve is rotatably connected to a fixing bolt, which is rotatably connected inside the threaded hole of the reinforcing bar sleeve.
[0011] As a further preferred embodiment of this technical solution, a grout outlet and a grout injection outlet are fixedly installed on the outer side of one end of the sleeve body, and a sealing ring is provided at the connection between the reinforcing bar body and the sleeve.
[0012] This utility model provides a prefabricated building grouting sleeve, which has the following beneficial effects:
[0013] (1) This utility model connects the pin fixing sleeve and the rebar sleeve to the sleeve body and the outside of the rebar. Then, the first fixing pin and the second fixing pin are brought into contact with the outer surface of the rebar. Then, the fixing shell is put on the outside of the pin fixing sleeve to form a squeezing pressure on the first fixing pin and the second fixing pin to fix the rebar. Then, the fixing shell is put on the outside of the rebar sleeve and fixed with fixing bolts. This can effectively maintain the stability of the rebar inside the sleeve body when the grout is injected. It can avoid the rebar shifting in the sleeve and causing uneven distribution of the injected grout in the sleeve. It can also prevent the rebar shifting from causing uneven grout thickness in some areas, which would reduce the structural bearing capacity and increase safety hazards. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0015] Figure 2 This is a schematic diagram of the sleeve structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the fixing pin and sleeve structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the disassembled structure of the internal fixing component of the reinforcing bar of this utility model;
[0018] In the figure: 100, building grouting sleeve assembly; 101, sleeve body; 102, grout outlet; 103, grout injection port; 104, reinforcing bar; 200, internal fixing assembly for reinforcing bar; 201, perforation; 202, first fixing pin; 203, second fixing pin; 204, pin fixing sleeve; 205, reinforcing bar sleeve; 206, threaded hole; 207, groove; 208, fixing shell; 209, sleeve; 210, fixing bolt; 211, sealing ring. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0020] This utility model provides a technical solution: such as Figure 1-4 As shown, in this embodiment, a prefabricated building grouting sleeve includes a building grouting sleeve assembly 100 and a rebar internal fixing assembly 200. The building grouting sleeve assembly 100 includes: a sleeve body 101, a rebar 104 inserted into the sleeve body 101, a first fixing pin 202 and a second fixing pin 203 contacting the outer end of the rebar 104, the second fixing pin 203 being connected through the sleeve body 101, a through hole 201 being provided inside the sleeve body 101, the first fixing pin 202 and the second fixing pin 203 being connected through the pin fixing sleeve 204 being provided inside the pin fixing sleeve 204, a groove 207 being provided inside the pin fixing sleeve 204, the pin fixing sleeve 204 being connected through the rebar 104, the groove 207 of the pin fixing sleeve 204 being engaged with the upper and lower ends of the sleeve body 101, a rebar sleeve 205 being fixedly installed at one end of the pin fixing sleeve 204, the inside of the rebar sleeve 205 being fitted over the outside of the rebar 104.
[0021] like Figure 1 , Figure 4 As shown, a threaded hole 206 is provided on the outer side of the rebar sleeve 205. A fixed outer shell 208 is fitted onto the outer side of the pin fixing sleeve 204. A sleeve 209 is fixedly installed at one end of the fixed outer shell 208. The inner side of the sleeve 209 is fitted onto the outer end of the rebar sleeve 205. A fixing bolt 210 is rotatably connected to the outer end of the sleeve 209. The fixing bolt 210 is rotatably connected inside the threaded hole 206 of the rebar sleeve 205. A grout outlet 102 and a grout injection outlet 103 are fixedly installed on the outer side of one end of the sleeve body 101. A sealing ring 211 is provided at the connection between the rebar body 104 and the sleeve 209.
[0022] A reliable connection of the reinforcing bars is achieved through the connection of the reinforcing bar 104 to the sleeve body 101 and the use of grout. The reinforcing bar 104 is inserted into the sleeve body 101, and the grout is injected from the injection port 103 and air is discharged through the outlet port 102 to ensure dense grouting. The pin fixing sleeve 204 and the reinforcing bar sleeve 205 are fitted and connected to the sleeve body 101 and the outside of the reinforcing bar. Then, the first fixing pin 202 and the second fixing pin 203 are brought into contact with the outer surface of the reinforcing bar. Finally, the fixing shell 208 is fitted onto the insert. On the outside of the pin fixing sleeve 204, the first fixing pin 202 and the second fixing pin 203 are squeezed to fix the steel bar. Then, the sleeve 209 is inserted into the outside of the steel bar sleeve 205 and fixed with the fixing bolt 210. This can effectively maintain the stability of the steel bar inside the sleeve body 101 when the grout is injected. It can avoid the steel bar shifting in the sleeve and causing uneven distribution of the injected grout in the sleeve. It can also prevent the steel bar shifting from causing uneven grout thickness in some areas, which would reduce the structural bearing capacity and increase safety hazards.
[0023] This utility model provides a prefabricated building grouting sleeve, the specific working principle of which is as follows: When the reinforcing bar 104 is connected to the sleeve body 101, and grout is used, a reliable connection of the reinforcing bar is achieved. The reinforcing bar 104 is inserted into the sleeve body 101, and the grout is injected from the injection port 103, while air is discharged through the outlet port 102 to ensure dense grouting. The pin fixing sleeve 204 and the reinforcing bar sleeve 205 are fitted and connected to the sleeve body 101 and the outer side of the reinforcing bar. Then, the first fixing pin 202 and the second fixing pin 203 are brought into contact with the outer surface of the reinforcing bar, and then... By fitting the outer casing 208 onto the outside of the pin fixing sleeve 204, a compressive pressure is applied to the first fixing pin 202 and the second fixing pin 203 to fix the reinforcing bar. Then, by fitting the casing 209 onto the outside of the reinforcing bar sleeve 205 and connecting and fixing it with the fixing bolt 210, the stability of the reinforcing bar inside the sleeve body 101 can be effectively maintained by injecting grout. This can prevent the reinforcing bar from shifting inside the sleeve, which would cause uneven distribution of the injected grout inside the sleeve. It can also prevent the reinforcing bar from shifting, which would cause uneven grout thickness in some areas, resulting in a decrease in the structural bearing capacity and an increase in safety hazards.
[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fabricated building grouting sleeve, comprising a building grouting sleeve assembly (100) and a steel bar internal fixing assembly (200), characterized in that: The building grouting sleeve assembly (100) comprises a sleeve body (101), a reinforcing body (104) is inserted into the sleeve body (101), a first fixed bolt (202) and a second fixed bolt (203) are arranged at the outer side of the reinforcing body (104), the second fixed bolt (203) is connected through the sleeve body (101), a through hole (201) is arranged in the sleeve body (101), and the first fixed bolt (202) and the second fixed bolt (203) are connected through the inside of a bolt fixing sleeve (204).
2. The fabricated building grout sleeve according to claim 1, characterized in that: The inside of the bolt fixing sleeve (204) is provided with a groove (207), the bolt fixing sleeve (204) is connected through the reinforcing body (104), and the groove (207) of the bolt fixing sleeve (204) is clamped on the upper and lower ends of the sleeve body (101).
3. A fabricated construction grout sleeve according to claim 2, wherein: One end of the bolt fixing sleeve (204) is fixedly provided with a reinforcing sleeve (205), and the reinforcing sleeve (205) is sleeved outside the reinforcing body (104).
4. A fabricated building grout sleeve according to claim 3, wherein: The outer side of the reinforcing sleeve (205) is provided with a threaded hole (206), and the outer side of the bolt fixing sleeve (204) is sleeved and connected with a fixed shell (208).
5. A fabricated construction grout sleeve according to claim 4, wherein: One end of the fixed shell (208) is fixedly provided with a sleeve shell (209), and the inner side of the sleeve shell (209) is sleeved outside the reinforcing sleeve (205).
6. A fabricated construction grout sleeve according to claim 5, wherein: The outer side end of the sleeve shell (209) is rotatably connected with a fixed bolt (210), and the fixed bolt (210) is rotatably connected in the threaded hole (206) of the reinforcing sleeve (205).
7. The fabricated building grout sleeve of claim 1, wherein: One end of the sleeve body (101) is fixedly provided with a grouting outlet (102) and a grouting inlet (103), and a sealing ring (211) is arranged at the connection position of the reinforcing body (104) and the sleeve shell (209).