Quick connecting device for reinforcing steel bar sleeve
By using electric equipment and an electromagnet plate to drive the reinforcing bar into the threaded hole inside the sleeve, the problem of low efficiency in mechanical connection of reinforcing bars is solved, and the rapid connection between the reinforcing bar and the sleeve is achieved, thus improving construction efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 中铁二十四局集团上海铁建工程有限公司
- Filing Date
- 2025-04-10
- Publication Date
- 2026-05-08
AI Technical Summary
Conventional mechanical connections for reinforcing bars are inefficient, especially for large-diameter reinforcing bars, which are difficult to install and affect construction progress.
An electric drive is used to rotate the shaft, which, combined with the magnetic connection between the electromagnet plate and the reinforcing bar, enables the end of the reinforcing bar to be automatically screwed into the internal thread hole of the sleeve. Through the magnetic connection between the electromagnet plate and the reinforcing bar and the guidance of the guide tube, the reinforcing bar and the sleeve are quickly connected.
This enables rapid connection between the reinforcing bars and the sleeve, improving construction efficiency.
Smart Images

Figure CN224213639U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of rebar connection, and in particular to a quick rebar sleeve connection device. Background Technology
[0002] Conventional mechanical connection of reinforcing bars involves first screwing a sleeve into one reinforcing bar, and then using a special wrench to screw another reinforcing bar into the sleeve. This is a purely manual operation with low efficiency. This is especially true for some large-diameter reinforcing bars, which greatly increases the difficulty of installation and affects the construction progress.
[0003] Therefore, a quick-connect device for rebar sleeves is needed to solve the above problems. Summary of the Invention
[0004] The purpose of this utility model is to provide a quick connection device for rebar sleeves to address the shortcomings of the prior art. This connection device consists of an electric device and a rebar end fixing mechanism. The rebar end fixing mechanism is installed at one end of the rotating shaft of the electric device. The rebar end fixing mechanism includes an electromagnet plate, an installation tube, and a guide tube. One end of the rebar is installed in the installation tube and magnetically connected to the electromagnet plate when energized. The electric device drives the rotating shaft to rotate, thereby causing the other end of the rebar to be screwed into the internal threaded hole of the sleeve, thus realizing a quick connection between the rebar and the sleeve.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] A quick-connection device for rebar sleeves is disclosed. The device is used to connect rebars to sleeves. The device includes an electric device and a rebar end fixing mechanism. The rebar end fixing mechanism is installed at one end of the rotating shaft of the electric device. The rebar end fixing mechanism includes an electromagnet plate and an installation tube. The installation tube is connected to the rotating shaft of the electric device. The electromagnet plate is disposed inside the installation tube and connected to the rotating shaft of the electric device. Both ends of the rebar are provided with external threads. One end of the rebar is installed inside the installation tube and magnetically connected to the electromagnet plate when energized. The electric device drives the rotating shaft to rotate, thereby causing the other end of the rebar to be screwed into the internal threaded hole of the sleeve.
[0007] A guide tube is provided on the side of the mounting tube that is not connected to the rotating shaft of the electric device.
[0008] The inner diameter of the guide tube gradually decreases from the side that is not connected to the mounting tube to the side that is connected to the mounting tube, and the minimum inner diameter of the guide tube is equal to the inner diameter of the mounting tube.
[0009] The sleeve has guide holes on both sides, and both guide holes are connected to the internal threaded hole of the sleeve.
[0010] The inner diameter of the guide hole gradually decreases from the side that is not connected to the internal threaded hole to the side that is connected to the internal threaded hole. The minimum inner diameter of the guide hole is equal to the inner diameter of the internal threaded hole of the sleeve.
[0011] The advantages of this utility model are: simple structure and convenient operation; it realizes the rapid connection between the steel bar and the sleeve. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the connecting device of this utility model;
[0013] Figure 2 for Figure 1 Enlarged view of A in the middle;
[0014] like Figures 1-2 As shown in the figure, the labels represent:
[0015] Electric device 10, rotating shaft 101, rebar end fixing mechanism 20, electromagnet plate 201, mounting pipe 202, guide pipe 203, sleeve 30, internal threaded hole 301, guide hole 302, first rebar 40, second rebar 50. Detailed Implementation
[0016] The features of this utility model and other related features will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art:
[0017] Example: Figures 1-2As shown, this embodiment relates to a quick-connect device for a rebar sleeve. This device is used to connect a rebar (second rebar 50) to a sleeve 30. The device includes an electric device 10 and a rebar end fixing mechanism 20. The rebar end fixing mechanism 20 is installed at one end of the rotating shaft 101 of the electric device 10. The rebar end fixing mechanism 20 includes an electromagnet plate 201, an installation tube 202, and a guide tube 203. The installation tube 202 is connected to the rotating shaft 101 of the electric device 10 and is coaxial with the rotating shaft 101. The installation tube 202 is used to install and place the second rebar 50. The electromagnet plate 201 is disposed inside the installation tube 202 and connected to the rotating shaft 101 of the electric device 10. The installation tube 202 is not connected to the rotating shaft 101 of the electric device 10. A guide tube 203 is provided on one side of the connection 01. The guide tube 203 is used to guide the second reinforcing bar 50. The inner diameter of the guide tube 203 gradually decreases from the side that is not connected to the installation tube 202 to the other side that is connected to the installation tube 202. The minimum inner diameter of the guide tube 203 is equal to the inner diameter of the installation tube 202. The inner diameter of the installation tube 202 corresponds to the outer diameter of the second reinforcing bar 50. The second reinforcing bar 50 is placed into the installation tube 202 through the guide tube 203 and is attached to the electromagnet plate 201. When the electromagnet plate 201 is energized, the electromagnet plate 201 and the second reinforcing bar 50 are magnetically connected. When it is necessary to disconnect the magnetic connection between the electromagnet plate 201 and the second reinforcing bar 50, the electromagnet plate 201 is de-energized, and the second reinforcing bar 50 can be taken out from the installation tube 202 and the guide tube 203.
[0018] like Figures 1-2 As shown, both ends of the second reinforcing bar 50 and the first reinforcing bar 40 are provided with external threads. The middle part and both sides of the sleeve 30 are provided with internal threaded holes 301 and guide holes 302 respectively. Both guide holes 302 are connected to the internal threaded holes 301. The internal threaded holes 301 of the sleeve 30 are engaged with the external threads of the second reinforcing bar 50 and the first reinforcing bar 40. The inner diameter of the guide holes 302 gradually decreases from the side that is not connected to the internal threaded holes 301 to the other side that is connected to the internal threaded holes 301. The minimum inner diameter of the guide holes 302 is equal to the inner diameter of the internal threaded holes 301. First, screw the sleeve 30 onto one end of the first reinforcing bar 40 (the first reinforcing bar 40 passes through the guide hole 302 and connects to the internal threaded hole 301). Then, insert the second reinforcing bar 50 into the installation tube 202 through the guide tube 203 and attach it to the electromagnet plate 201. Then, energize the electromagnet plate 201 so that the electromagnet plate 201 and the second reinforcing bar 50 are magnetically connected. The electric device 10 drives the rotating shaft 101 to rotate so that the other end of the second reinforcing bar 50 is screwed into the internal threaded hole 301 of the sleeve 30 (the second reinforcing bar 50 passes through the guide hole 302 and connects to the internal threaded hole 301).
[0019] The beneficial technical effects of this embodiment are: simple structure and convenient operation; it realizes the rapid connection between the reinforcing bar and the sleeve.
[0020] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.
Claims
1. A quick-connect device for rebar sleeves, characterized in that: The connecting device is used to connect the reinforcing bar to the sleeve. The connecting device includes an electric device and a reinforcing bar end fixing mechanism. The reinforcing bar end fixing mechanism is installed at one end of the rotating shaft of the electric device. The reinforcing bar end fixing mechanism includes an electromagnet plate and an installation tube. The installation tube is connected to the rotating shaft of the electric device. The electromagnet plate is disposed in the installation tube and connected to the rotating shaft of the electric device. Both ends of the reinforcing bar are provided with external threads. One end of the reinforcing bar is installed in the installation tube and is magnetically connected to the electromagnet plate in the energized state. The electric device drives the rotating shaft to rotate, so as to drive the other end of the reinforcing bar into the internal threaded hole of the sleeve.
2. The quick-connect device for rebar sleeves as described in claim 1, characterized in that: A guide tube is provided on the side of the mounting tube that is not connected to the rotating shaft of the electric device.
3. The quick-connect device for rebar sleeves as described in claim 2, characterized in that: The inner diameter of the guide tube gradually decreases from the side that is not connected to the mounting tube to the side that is connected to the mounting tube, and the minimum inner diameter of the guide tube is equal to the inner diameter of the mounting tube.
4. The quick-connect device for rebar sleeves as described in claim 1, characterized in that: The sleeve has guide holes on both sides, and both guide holes are connected to the internal threaded hole of the sleeve.
5. The quick-connect device for rebar sleeves as described in claim 4, characterized in that: The inner diameter of the guide hole gradually decreases from the side that is not connected to the internal threaded hole to the side that is connected to the internal threaded hole. The minimum inner diameter of the guide hole is equal to the inner diameter of the internal threaded hole of the sleeve.