An electrically powered reinforcing sleeve connecting apparatus

The electric rebar sleeve connection equipment, which uses a stepless speed-regulating motor to drive the tightening mechanism and the self-adaptive rebar wrench, solves the problems of low rebar connection efficiency and unstable quality, and achieves efficient, safe and low-cost rebar connection.

CN224579075UActive Publication Date: 2026-07-31CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
Filing Date
2025-09-01
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

Existing technologies for rebar connection suffer from low efficiency and unstable quality, and require high labor intensity for manual operation, which affects construction progress and costs.

Method used

An electric rebar sleeve connection device is adopted, which uses a stepless speed-regulating motor to drive the screwing mechanism. Combined with modular design and an adaptive rebar wrench, it realizes the automatic connection between the rebar and the sleeve.

Benefits of technology

It significantly improves the connection efficiency between steel bars and sleeves, ensures connection quality, reduces labor intensity, improves equipment safety and adaptability, and controls costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a connecting device, specifically an electric rebar sleeve connecting device, including a metal protective cover and a continuously variable speed motor housed within the metal protective cover, and a screwing mechanism connected to the continuously variable speed motor. The continuously variable speed motor drives the screwing mechanism to rotate forward or backward, and the screwing mechanism clamps the rebar. After clamping the rebar, the screwing mechanism rotates to screw the rebar into the rebar sleeve. This utility model significantly improves the connection efficiency between the rebar and the sleeve by replacing manual operation with motor drive, and ensures the connection quality. The metal protective cover covers key parts of the device, improving its safety. The modular design facilitates maintenance and component replacement. The extendable robotic arm and adjustable adaptive rebar wrench are suitable for connecting rebars of common specifications to the sleeve, improving the adaptability of the device. The device is simple to operate, easy to implement, and low in cost, which helps control costs.
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Description

Technical Field

[0001] This utility model relates to connecting devices, and more particularly to an electric rebar sleeve connecting device. Background Technology

[0002] In building construction, it is often necessary to connect multiple steel bars to meet the requirements of building height and dimensions. Connecting two adjacent steel bars using steel bar sleeves is a common connection method in building construction.

[0003] Sleeve connections ensure that two reinforcing bars achieve an equal-strength connection at the joint, meaning the joint strength is not lower than the strength of the reinforcing bars themselves, thus preventing it from becoming a weak point in the structure. Reinforcing bars need to transmit tensile, compressive, or bending moments; for example, in critical load-bearing components such as beams, columns, and shear walls, the reinforcing bars must be continuously stressed. Sleeve connections can replace traditional lap splices or welding, offering greater reliability.

[0004] During construction, the connection of reinforcing bars using sleeves is mostly done manually. However, manual operation suffers from high labor intensity, low efficiency, and inconsistent connection quality. Workers must hold the reinforcing bars and align them with the sleeve holes; aligning a set of reinforcing bar sleeves takes approximately two minutes, and the skill level is highly dependent on the worker's experience. Traditional manual operation is prone to fatigue after prolonged work, leading to decreased efficiency, affecting construction progress, and increasing construction costs. With the accelerating pace of industrialization in the construction industry, the requirements for the efficiency and quality of reinforcing bar connections are constantly increasing, urgently necessitating an electric device to replace manual operation. Summary of the Invention

[0005] The main objective of this invention is to provide an electric rebar sleeve connection device to solve the problems raised in related technologies.

[0006] To achieve the above objectives, according to one aspect of the present invention, an electric rebar sleeve connection device is provided, comprising a metal protective cover and a stepless speed-regulating motor disposed within the metal protective cover, and further comprising a screwing mechanism connected to the stepless speed-regulating motor, the stepless speed-regulating motor being used to drive the screwing mechanism to rotate forward or in reverse, the screwing mechanism being used to clamp the rebar, and the screwing mechanism rotating after clamping the rebar can screw the rebar into the rebar sleeve.

[0007] Furthermore, the continuously variable speed motor is equipped with a forward rotation button and a reverse rotation button. The forward rotation button is used to control the continuously variable speed motor to rotate forward, and the reverse rotation button is used to control the continuously variable speed motor to rotate in reverse.

[0008] Furthermore, the continuously variable speed motor is also equipped with a three-phase emergency stop button, which is used to cut off the power supply to the continuously variable speed motor.

[0009] Furthermore, the continuously variable speed motor is also equipped with a power switch and a power cord connector. The power cord connector is used to connect to an external power source, and the power switch is used to control the start and stop of the continuously variable speed motor.

[0010] Furthermore, the continuously variable speed motor has an adjustable speed range of 40-200 r / m, and the continuously variable speed motor transmits torque through a gearbox.

[0011] Furthermore, the metal protective cover is fixedly equipped with two handles and has several wheels at the bottom for rotating, which are used to move the metal protective cover.

[0012] Furthermore, the metal protective cover is provided with a heat dissipation duct, which is used to dissipate heat for the continuously variable speed motor.

[0013] Furthermore, the tightening mechanism includes a universal joint coupling, a robotic arm, and an adaptive rebar wrench. One end of the robotic arm is connected to the universal joint coupling, and the other end is connected to the adaptive rebar wrench, which is used to clamp the rebar.

[0014] Furthermore, the reach of the robotic arm is no greater than 0.5m.

[0015] Furthermore, the adaptive rebar wrench can be adapted to rebar sleeves with a diameter not exceeding 40mm.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention significantly improves the connection efficiency of rebars and sleeves by replacing manual operation with motor drive, while ensuring connection quality. A metal protective cover covers key parts of the equipment, improving its safety. The modular design facilitates maintenance and component replacement. The telescopic robotic arm and adjustable adaptive rebar wrench are suitable for connecting rebars and sleeves of common specifications, improving the equipment's adaptability. The equipment is simple to operate, easy to implement, and has a low cost, which helps control costs. Attached Figure Description

[0017] Figure 1 This is a front view of the electric rebar sleeve connection device of this utility model; Figure 2 This is a top view of the electric rebar sleeve connection device of this utility model; Figure 3 This is a side view of the electric rebar sleeve connection device of this utility model; Figure 4 This is a rear view of the electric rebar sleeve connection device of this utility model; Figure 5 This is a schematic diagram of the electric rebar sleeve connection device of this utility model, showing the two rebars just screwed into the rebar sleeve; Figure 6This is a schematic diagram of the first rebar being screwed into the rebar sleeve of the electric rebar sleeve connection device of this utility model; Figure 7 This is a schematic diagram of the second rebar being screwed into the rebar sleeve of the electric rebar sleeve connection device of this utility model.

[0018] Figure label: 1. Infinitely variable speed motor; 2. Universal joint coupling; 3. Robotic arm; 4. Metal protective cover; 5. Adaptive rebar wrench; 6. Forward rotation button; 7. Reverse rotation button; 8. Three-phase emergency stop button; 9. Handle; 10. Wheel; 11. Power switch; 12. Power cord connector; 13. Cooling duct; 14. First rebar; 15. Second rebar; 16. Rebar sleeve; 17. External wrench. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] This embodiment provides an electric rebar sleeve connection device, such as... Figure 1-4 As shown, the device includes a metal protective cover 4 and a continuously variable speed motor 1 housed within the metal protective cover 4. The metal protective cover 4 covers the critical parts of the equipment, preventing damage to these parts and avoiding worker contact with them, thus improving safety. The continuously variable speed motor 1 has a power of 0.75KW and an adjustable speed range of 40-200r / m. The continuously variable speed motor 1 transmits torque through a gearbox. It also includes a tightening mechanism connected to the continuously variable speed motor 1. The continuously variable speed motor 1 drives the tightening mechanism to rotate forward or backward. The tightening mechanism is used to clamp the reinforcing bar. After clamping the reinforcing bar, the tightening mechanism rotates, screwing the reinforcing bar into the reinforcing bar sleeve 16.

[0021] The output shaft of the continuously variable speed motor 1 is fixedly connected to the universal joint coupling 2. The continuously variable speed motor 1 drives the universal joint coupling 2 to rotate, and the universal joint coupling 2 drives the adaptive rebar wrench 5 to rotate via the robotic arm 3. The continuously variable speed motor 1 is equipped with a forward rotation button 6 and a reverse rotation button 7. The forward rotation button 6 controls the continuously variable speed motor 1 to rotate forward, thereby driving the adaptive rebar wrench 5 to rotate forward; the reverse rotation button 7 controls the continuously variable speed motor 1 to rotate in reverse, thereby driving the adaptive rebar wrench 5 to rotate in reverse.

[0022] The stepless speed-regulating motor 1 is also equipped with a three-phase emergency stop button 8. In an emergency, the three-phase emergency stop button 8 can cut off the power supply to the stepless speed-regulating motor 1, and the equipment will stop working. The stepless speed-regulating motor 1 is also equipped with a power switch 11 and a power cord connector 12. The power cord connector 12 is used to connect to an external power source, and the power switch 11 is used to control the start and stop of the stepless speed-regulating motor 1.

[0023] Two handles 9 are fixedly provided on the metal protective cover 4, and several wheels 10 are provided at the bottom for rotation. By pulling the metal protective cover 4 through the handles 9, the wheels 10 are driven, making it easy to move the metal protective cover 4. The metal protective cover 4 is also provided with a heat dissipation duct 13, which is used to dissipate heat for the stepless speed regulating motor 1.

[0024] The screwing mechanism includes a universal joint coupling 2, a robotic arm 3, and an adaptive rebar wrench 5. One end of the robotic arm 3 is connected to the universal joint coupling 2, and the other end is connected to the adaptive rebar wrench 5. The arm span of the robotic arm 3 is no more than 0.5m. The adaptive rebar wrench 5 is used to clamp the rebar and can be adapted to rebar sleeves 16 with a diameter of no more than 40mm.

[0025] The equipment features a modular design, allowing for quick replacement of faulty components.

[0026] When using, such as Figure 5 As shown, first screw the first reinforcing bar 14 and the second reinforcing bar 15 into the reinforcing bar sleeve 16 from both ends by 2-3 threads, then fix the other end of the second reinforcing bar 15 with an external wrench 17. Figure 6 As shown, the outer end of the first rebar 14 is clamped using the adaptive rebar wrench 5. Depending on the direction of the internal threads of the rebar sleeve 16, the forward rotation button 6 or the reverse rotation button 7 is pressed to start the stepless speed-regulating motor 1. The stepless speed-regulating motor 1 drives the universal joint coupling 2 to rotate. The universal joint coupling 2, through the robotic arm 3, drives the adaptive rebar wrench 5 to rotate, causing the first rebar 14 to rotate and screw it into the rebar sleeve 16. Practical verification has shown that the time to connect a single rebar can be shortened to 30 seconds, increasing efficiency by 500%.

[0027] like Figure 7 As shown, after the first reinforcing bar 14 and the reinforcing bar sleeve 16 are tightly connected, there is no relative rotation between them. When the first reinforcing bar 14 rotates, it drives the reinforcing bar sleeve 16 to rotate. Since the end of the second reinforcing bar 15 is fixed by the external wrench 17 and cannot rotate, the rotating reinforcing bar sleeve 16 fits the second reinforcing bar 15 into it, thus completing the connection of the second reinforcing bar 15. After the two reinforcing bars are connected, release the forward rotation button 6 or the reverse rotation button 7.

[0028] This equipment replaces manual operation with motor drive, significantly improving the connection efficiency of rebar and sleeve and ensuring connection quality; a metal protective cover 4 covers key parts of the equipment, improving its safety; the modular design facilitates maintenance and component replacement; the telescopic robotic arm and adjustable adaptive rebar wrench are suitable for connecting common specifications of rebar and sleeve, improving the equipment's adaptability; the equipment is simple to operate, easy to implement, and low in cost, which helps control costs.

[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A power-driven steel sleeve connecting apparatus comprising a metal protective cover (4) and a motor (1) provided in the metal protective cover (4), characterized in that, It also includes a screwing mechanism, which is connected to a stepless speed-regulating motor (1). The stepless speed-regulating motor (1) is used to drive the screwing mechanism to rotate forward or backward. The screwing mechanism is used to clamp the reinforcing bar. After clamping the reinforcing bar, the screwing mechanism rotates to screw the reinforcing bar into the reinforcing bar sleeve (16).

2. The electrically powered steel rebar sleeve connection apparatus of claim 1, wherein, The stepless speed-regulating motor (1) is equipped with a forward rotation button (6) and a reverse rotation button (7). The forward rotation button (6) is used to control the stepless speed-regulating motor (1) to rotate forward, and the reverse rotation button (7) is used to control the stepless speed-regulating motor (1) to rotate in reverse.

3. The electrically powered rebar sleeve connection apparatus of claim 1, wherein, The stepless speed-regulating motor (1) is also equipped with a three-phase emergency stop button (8), which is used to cut off the power supply of the stepless speed-regulating motor (1).

4. The electrically powered rebar sleeve connection apparatus of claim 1, wherein, The stepless speed-regulating motor (1) is also equipped with a power switch (11) and a power cord connector (12). The power cord connector (12) is used to connect to an external power source, and the power switch (11) is used to control the opening and closing of the stepless speed-regulating motor (1).

5. The electrically powered rebar sleeve connection apparatus of claim 1, wherein, The stepless speed regulating motor (1) has an adjustable speed range of 40-200 r / m, and the stepless speed regulating motor (1) transmits torque through a gearbox.

6. The electrically powered rebar sleeve connection apparatus of claim 1, wherein, The metal protective cover (4) is fixedly provided with two handles (9) and has several wheels (10) at the bottom for moving the metal protective cover (4).

7. The electrically powered rebar sleeve connection apparatus of claim 1, wherein, The metal protective cover (4) is provided with a heat dissipation duct (13), which is used to dissipate heat for the stepless speed regulating motor (1).

8. The electrically powered rebar sleeve connection apparatus of claim 1, wherein, The screwing mechanism includes a universal joint coupling (2), a robotic arm (3), and an adaptive rebar wrench (5). One end of the robotic arm (3) is connected to the universal joint coupling (2), and the other end is connected to the adaptive rebar wrench (5). The adaptive rebar wrench (5) is used to clamp the rebar.

9. The electrically powered rebar sleeve connection apparatus of claim 8, wherein, The arm span of the robotic arm (3) is no more than 0.5m.

10. The electrically powered rebar sleeve connection apparatus of claim 8, wherein, The adaptive rebar wrench (5) can be adapted to rebar sleeves (16) with a diameter not greater than 40mm.