A reinforcing bar coupling device
Patent Information
- Application Number
- CN202522499857.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-25
AI Technical Summary
[0004]本申请的目的是提供一种钢筋连接装置，旨在解决现有技术中电机输出轴与钢筋难以牢固连接的技术问题
本申请的技术方案通过采用将电机的输出轴与连接机构连接，连接机构与夹持装置连接。夹持装置包括第一夹具、第二夹具和锁紧机构，第一夹具和第二夹具分别与锁紧机构连接，第一夹具和第二夹具之间形成容纳间隙，以使钢筋能够穿设于容纳间隙，锁紧机构能够驱动第二夹具朝向第一夹具移动，使得第一夹具和第二夹具能够夹紧钢筋，从而能够增强电机与钢筋的传动稳定性，有利于减少电机输出轴与钢筋发生打滑、偏心旋转及松动的问题，从而使电机能够带动钢筋稳定有效地旋转，进而确保钢筋与直螺纹套筒紧密配合，有利于提高钢筋连接的效率和精度。
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Figure CN224859232U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of rebar connection technology, and in particular to a rebar connection device. Background Technology
[0002] In building construction, especially in foundation work, rebar tying is a crucial construction procedure. When tying rebars, if they are too long, it is usually necessary to connect two rebars. The traditional method is to manually tighten a straight-threaded sleeve, but this method is inefficient and prone to manual difficulties and time waste. Especially when the rebars are long, the manual tightening speed is slow, causing delays in construction progress.
[0003] To address the aforementioned issues, existing technologies attempt to replace manual operation with a motor, using the motor's output shaft to rotate the reinforcing bars and thus accelerate the connection process. However, the common practice is to use clamps or sleeves to fix the motor's output shaft to the reinforcing bars. Since the ends of reinforcing bars are typically smooth and round, while motor output shafts are often cylindrical or keyed, a reliable transmission connection is difficult to achieve, easily leading to slippage and eccentric rotation. Especially during the process of screwing the reinforcing bars into the threaded sleeve, under significant torque, the connection is prone to loosening or detachment due to insufficient counter-torque, resulting in reduced transmission efficiency. This not only affects the tightness of the reinforcing bar connection but also hinders the overall construction progress. Utility Model Content
[0004] The purpose of this application is to provide a steel bar connection device, which aims to solve the technical problem that it is difficult to firmly connect the motor output shaft and the steel bar in the prior art.
[0005] To achieve the above objectives, this application proposes a rebar connection device, the rebar connection device comprising: A motor and a connecting mechanism, wherein the output shaft of the motor is connected to the connecting mechanism; A clamping device is provided, which is connected to the connecting mechanism. The clamping device includes a first clamp, a second clamp, and a locking mechanism. The first clamp and the second clamp are respectively connected to the locking mechanism. A receiving gap is formed between the first clamp and the second clamp so that the reinforcing bar can be inserted through the receiving gap. The locking mechanism can drive the second clamp to move toward the first clamp so that the first clamp and the second clamp can clamp the reinforcing bar.
[0006] In one embodiment, the locking mechanism includes two locking bolts, both of which pass through the first clamp and the second clamp. The two locking bolts are spaced apart on both sides of the reinforcing bar and extend in a direction opposite to the moving direction of the second clamp to the side of the second clamp away from the reinforcing bar. Either of the two locking bolts includes a threaded rod and an adjusting nut. The adjusting nut passes through the threaded rod and is located on the side of the second clamp away from the reinforcing bar. The adjusting nut can drive the second clamp to move towards the first clamp.
[0007] In one embodiment, either of the two locking bolts further includes a fine-tuning nut, which is inserted through the threaded rod and distributed on the side of the second clamp facing the reinforcing bar. The fine-tuning nut can drive the second clamp to move away from the first clamp.
[0008] In one embodiment, the locking mechanism further includes a limiting structure disposed on the first clamp and extending toward the second clamp. The limiting structure is capable of abutting against the side of the second clamp facing the reinforcing bar, thereby forming the receiving gap between the first clamp and the second clamp. The size of the receiving gap along the extending direction of the second clamp is smaller than the outer diameter of the reinforcing bar.
[0009] In one embodiment, the locking mechanism includes a torsion spring and a rotating shaft. The rotating shaft is rotatably connected to the first clamp and the second clamp. One end of the torsion spring is connected to the first clamp, and the other end of the torsion spring is engaged with the second clamp. The second clamp can rotate around the rotating shaft away from the first clamp, so that an accommodating gap is formed between the first clamp and the second clamp. Under the elastic force of the torsion spring, the second clamp can rotate toward the first clamp, so that the first clamp and the second clamp can clamp the reinforcing bar.
[0010] In one embodiment, the connecting mechanism includes a connector and a connecting shaft that are connected to each other. The connector is connected to the output shaft of the motor, and the connecting shaft is connected to the clamping device. The axis of the output shaft of the motor coincides with the axis of the reinforcing bar, and the axis of the connecting shaft is at the same horizontal line as the axis of the reinforcing bar.
[0011] In one embodiment, the first clamp and the second clamp are respectively provided with a first engagement portion and a second engagement portion on the side facing the reinforcing bar. The first engagement portion and the second engagement portion can abut against the surface of the reinforcing bar to clamp the reinforcing bar.
[0012] In one embodiment, the first engagement portion is a first protrusion structure, the second engagement portion is a second protrusion structure, the number of the first protrusion structure is at least two, the at least two first protrusion structures are distributed at intervals along the first clamp, the number of the second protrusion structure is at least two, the at least two second protrusion structures are distributed at intervals along the second clamp, and the at least two first protrusion structures and the at least two second protrusion structures can abut against the surface of the reinforcing bar.
[0013] In one embodiment, the first engagement portion is a first arc-shaped groove, and the second engagement portion is a second arc-shaped groove. Both the first arc-shaped groove and the second arc-shaped groove are minor arcs. The inner diameter of both the first arc-shaped groove and the second arc-shaped groove is greater than or equal to the outer diameter of the reinforcing bar. The groove walls of both the first arc-shaped groove and the second arc-shaped groove can abut against the surface of the reinforcing bar.
[0014] In one embodiment, the walls of the first arc-shaped groove and the second arc-shaped groove are both rough surfaces, and the roughness parameter of the rough surface is Ra, which is 50μm≤Ra≤80μm.
[0015] The above-mentioned technical solution of this application has at least the following beneficial technical effects: The technical solution of this application connects the output shaft of the motor to a connecting mechanism, which in turn connects to a clamping device. The clamping device includes a first clamp, a second clamp, and a locking mechanism. The first and second clamps are respectively connected to the locking mechanism, forming a receiving gap between them to allow the reinforcing bar to pass through. The locking mechanism drives the second clamp towards the first clamp, enabling the first and second clamps to clamp the reinforcing bar. This enhances the transmission stability between the motor and the reinforcing bar, reducing slippage, eccentric rotation, and loosening between the motor output shaft and the reinforcing bar. This allows the motor to drive the reinforcing bar to rotate stably and effectively, ensuring a tight fit between the reinforcing bar and the straight threaded sleeve, thus improving the efficiency and accuracy of the reinforcing bar connection. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of the steel bar connection device provided in this application; Figure 2 This is a schematic diagram of the structure of an embodiment of the clamping device of the rebar connection device provided in this application; Figure 3 This is a schematic diagram of another embodiment of the clamping device of the rebar connection device provided in this application.
[0017] Figure label: 1. Motor; 2. Connecting mechanism; 11. Connecting part; 12. Connecting shaft; 3. Clamping device; 31. First clamp; 311. First engagement part; 312. Mounting part; 32. Second clamp; 321. Second engagement part; 33. Locking mechanism; 331. Locking bolt; 3311. Screw; 3312. Adjusting nut; 3313. Fine-tuning nut; 332. Limiting structure; 333. Torsion spring; 334. Rotating shaft; 34. Accommodation gap; 4. Reinforcing bar. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this application. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of this application.
[0019] The embodiments described in this application are only some, not all, of the embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments described herein without inventive effort are within the scope of protection of this application. In the description of this application, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0020] In building construction, especially in foundation work, rebar tying is a crucial construction procedure. When tying rebars, if they are too long, it is usually necessary to connect two rebars. The traditional method is to manually tighten a straight-threaded sleeve, but this method is inefficient and prone to manual difficulties and time waste. Especially when the rebars are long, the manual tightening speed is slow, causing delays in construction progress.
[0021] To address the aforementioned issues, existing technologies attempt to replace manual operation with a motor, using the motor's output shaft to rotate the reinforcing bars and thus accelerate the connection process. However, the common practice is to use clamps or sleeves to fix the motor's output shaft to the reinforcing bars. Since the ends of reinforcing bars are typically smooth and round, while motor output shafts are often cylindrical or keyed, a reliable transmission connection is difficult to achieve, easily leading to slippage and eccentric rotation. Especially during the process of screwing the reinforcing bars into the threaded sleeve, under significant torque, the connection is prone to loosening or detachment due to insufficient counter-torque, resulting in reduced transmission efficiency. This not only affects the tightness of the reinforcing bar connection but also hinders the overall construction progress.
[0022] To solve the above-mentioned technical problems, this application proposes a rebar connection device. Please refer to [link to relevant documentation]. Figures 1 to 3In one embodiment of this application, the rebar 4 connecting device includes a motor 1, a connecting mechanism 2, and a clamping device 3. The output shaft of the motor 1 is connected to the connecting mechanism 2, and the connecting mechanism 2 is connected to the clamping device 3. The clamping device 3 includes a first clamp 31, a second clamp 32, and a locking mechanism 33. The first clamp 31 and the second clamp 32 are respectively connected to the locking mechanism 33. A receiving gap 34 is formed between the first clamp 31 and the second clamp 32 so that the rebar 4 can pass through the receiving gap 34. The locking mechanism 33 can drive the second clamp 32 to move toward the first clamp 31 so that the first clamp 31 and the second clamp 32 can clamp the rebar 4.
[0023] The technical solution of this application connects the output shaft of motor 1 to connecting mechanism 2, and connecting mechanism 2 to clamping device 3. Clamping device 3 includes a first clamp 31, a second clamp 32, and a locking mechanism 33. The first clamp 31 and the second clamp 32 are respectively connected to the locking mechanism 33. Specifically, the first clamp 31 is provided with a mounting part 312, and the locking mechanism 33 is welded or snapped onto the mounting part 312, which is not limited here. A receiving gap 34 is formed between the first clamp 31 and the second clamp 32 so that the reinforcing bar 4 can pass through the receiving gap 34. The locking mechanism 33 can drive the second clamp 32 to move toward the first clamp 31, so that the first clamp 31 and the second clamp 32 can clamp the reinforcing bar 4, thereby enhancing the transmission stability between motor 1 and reinforcing bar 4, which helps to reduce the problems of slippage, eccentric rotation, and loosening between the output shaft of motor 1 and reinforcing bar 4. This allows motor 1 to drive reinforcing bar 4 to rotate stably and effectively, thereby ensuring a tight fit between reinforcing bar 4 and straight thread sleeve, which helps to improve the efficiency and accuracy of reinforcing bar 4 connection.
[0024] In one implementation, please refer to Figure 2 The locking mechanism 33 includes two locking bolts 331, both of which are inserted through the first clamp 31 and the second clamp 32. The two locking bolts 331 are spaced apart on both sides of the reinforcing bar 4. Both locking bolts 331 extend in the opposite direction to the moving direction of the second clamp 32 to the side of the second clamp 32 away from the reinforcing bar 4. Each of the two locking bolts 331 includes a screw 3311 and an adjusting nut 3312. The adjusting nut 3312 is inserted through the screw 3311 and is distributed on the side of the second clamp 32 away from the reinforcing bar 4. The adjusting nut 3312 can drive the second clamp 32 to move toward the first clamp 31, so that the first clamp 31 and the second clamp 32 can clamp the reinforcing bar 4. This embodiment, by setting two locking bolts 331 and using adjusting nuts 3312 to drive the second clamp 32 toward the first clamp 31, can achieve fast and accurate clamping of the reinforcing bar 4, improve the clamping efficiency and stability of the reinforcing bar 4 connection device, and help enhance the connection strength and safety of the structure.
[0025] In one implementation, please refer to Figure 2 Each of the two locking bolts 331 also includes a fine-tuning nut 3313. The fine-tuning nut 3313 is inserted through the screw 3311 and is distributed on the side of the second clamp 32 facing the rebar 4. The fine-tuning nut 3313 can drive the second clamp 32 to move away from the first clamp 31, which facilitates fine-tuning of the second clamp 32. This makes the line connecting the stress point of the rebar 4 in the first clamp 31 and the stress point of the rebar 4 in the second clamp 32 perpendicular to the axis of the rebar 4, thereby effectively improving the clamping accuracy and enhancing the stability and reliability of the rebar 4 connection.
[0026] In one implementation, please refer to Figure 2 The locking mechanism 33 also includes a limiting structure 332, which is disposed on the first clamp 31 and extends toward the second clamp 32. The limiting structure 332 can abut against the side of the second clamp 32 facing the reinforcing bar 4, so that a receiving gap 34 is formed between the first clamp 31 and the second clamp 32. The dimension of the receiving gap 34 along the extension direction of the second clamp 32 is smaller than the outer diameter of the reinforcing bar 4, so that the first clamp 31 and the second clamp 32 can apply sufficient clamping force to the reinforcing bar 4. This embodiment, by setting the limiting structure 332, forms an appropriate receiving gap 34 between the first clamp 31 and the second clamp 32, which can effectively control the magnitude of the clamping force, ensure that sufficient clamping force is applied to the reinforcing bar 4, and thus improve the clamping accuracy and stability of the reinforcing bar 4.
[0027] In one implementation, please refer to Figure 3 The locking mechanism 33 includes a torsion spring 333 and a rotating shaft 334. The rotating shaft 334 is rotatably connected to the first clamp 31 and the second clamp 32. One end of the torsion spring 333 is connected to the first clamp 31, and the other end is engaged with the second clamp 32. The second clamp 32 can rotate around the rotating shaft 334 away from the first clamp 31, forming a receiving gap 34 between the first clamp 31 and the second clamp 32. Under the elastic force of the torsion spring 333, the second clamp 32 can rotate towards the first clamp 31, so that the first clamp 31 and the second clamp 32 can clamp the reinforcing bar 4. This embodiment, through the cooperation of the torsion spring 333 and the rotating shaft 334, enables the first clamp 31 and the second clamp 32 to achieve automatic clamping under the elastic force of the torsion spring 333, which can effectively simplify the clamping process, improve the stability and accuracy of clamping, and provide greater operational convenience and safety in the process of fixing the reinforcing bar 4.
[0028] In one implementation, please refer to Figure 1The connecting mechanism 2 includes a connecting member 11 and a connecting shaft 12 that are connected to each other. The connecting member 11 is connected to the output shaft of the motor 1, and the connecting shaft 12 is connected to the clamping device 3. The axis of the output shaft of the motor 1 coincides with the axis of the reinforcing bar 4, which prevents the reinforcing bar 4 from shaking when the motor 1 drives the reinforcing bar 4 to rotate. The axis of the connecting shaft 12 is on the same horizontal line as the axis of the reinforcing bar 4, which helps to improve the stability and accuracy of the clamping device 3, so that the clamping action can be applied to the reinforcing bar 4 more smoothly and accurately, reducing errors, and potentially improving the efficiency and safety of the entire operation process.
[0029] In one implementation, please refer to Figure 2 and Figure 3 The first clamp 31 and the second clamp 32 are respectively provided with a first engaging portion 311 and a second engaging portion 321 on the side facing the reinforcing bar 4. The first engaging portion 311 and the second engaging portion 321 can abut against the surface of the reinforcing bar 4 to achieve clamping of the reinforcing bar 4. This embodiment, by providing the mutually abutting first engaging portion 311 and the second engaging portion 321, can achieve stable clamping of the surface of the reinforcing bar 4, increase the clamping force and friction, and help prevent the reinforcing bar 4 from slipping during operation, thereby improving the overall fixation reliability.
[0030] In one embodiment, the first engagement portion 311 is a first protrusion structure, and the second engagement portion 321 is a second protrusion structure. There are at least two first protrusion structures, spaced apart along the first clamp 31. Similarly, there are at least two second protrusion structures, spaced apart along the second clamp 32. Both the first and second protrusion structures can abut against the surface of the reinforcing bar 4. This embodiment, through the distribution of multiple first and second protrusion structures, allows the first clamp 31 and the second clamp 32 to more evenly contact the surface of the reinforcing bar 4, enhancing the clamping effect and improving the contact stability between the clamp and the reinforcing bar 4, thus ensuring the firmness and safety during the clamping process.
[0031] In one embodiment, the first engaging portion 311 is a first arc-shaped groove, and the second engaging portion 321 is a second arc-shaped groove. Both the first and second arc-shaped grooves are minor arcs. The inner diameters of both the first and second arc-shaped grooves are greater than or equal to the outer diameter of the reinforcing bar 4, and the groove walls of both the first and second arc-shaped grooves can abut against the surface of the reinforcing bar 4. This embodiment, through the design of the first and second arc-shaped grooves, ensures close contact between the groove walls and the surface of the reinforcing bar 4, thereby achieving a stable clamping effect. This enhances the compatibility and gripping strength between the clamp and the reinforcing bar 4, and improves the fixation and safety during the clamping process.
[0032] In one embodiment, the walls of both the first and second arc-shaped grooves are rough surfaces with a roughness parameter Ra of 50 μm ≤ Ra ≤ 80 μm. This embodiment, by providing rough surfaces on the walls of the first and second arc-shaped grooves, significantly improves the friction between the clamp and the reinforcing bar 4, preventing the reinforcing bar 4 from slipping or loosening during clamping. The roughness parameter Ra, ranging from 50 μm to 80 μm, ensures sufficient friction while avoiding damage or excessive frictional resistance that may result from excessive roughness. This contributes to providing a more stable and reliable clamping force when clamping the reinforcing bar 4, enhancing the stability and safety of the entire clamping system.
[0033] This application aims to protect a rebar 4 connecting device. The technical solution of this application adopts a method of connecting the output shaft of motor 1 to a connecting mechanism 2, and connecting mechanism 2 to a clamping device 3. The clamping device 3 includes a first clamp 31, a second clamp 32, and a locking mechanism 33. The first clamp 31 and the second clamp 32 are respectively connected to the locking mechanism 33, and a receiving gap 34 is formed between the first clamp 31 and the second clamp 32 so that the rebar 4 can be inserted into the receiving gap 34. The locking mechanism 33 can drive the second clamp 32 to move towards the first clamp 31, so that the first clamp 31 and the second clamp 32 can clamp the rebar 4, thereby enhancing the transmission stability between motor 1 and rebar 4, which helps to reduce the problems of slippage, eccentric rotation, and loosening between the output shaft of motor 1 and rebar 4. This allows motor 1 to drive the rebar 4 to rotate stably and effectively, thereby ensuring a tight fit between the rebar 4 and the straight threaded sleeve, which helps to improve the efficiency and accuracy of rebar 4 connection.
[0034] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this application and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this application should be included within the protection scope of this application. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A steel bar connection device, characterized in that, include: A motor and a connecting mechanism, wherein the output shaft of the motor is connected to the connecting mechanism; A clamping device is provided, which is connected to the connecting mechanism. The clamping device includes a first clamp, a second clamp, and a locking mechanism. The first clamp and the second clamp are respectively connected to the locking mechanism. A receiving gap is formed between the first clamp and the second clamp so that the reinforcing bar can be inserted through the receiving gap. The locking mechanism can drive the second clamp to move toward the first clamp so that the first clamp and the second clamp can clamp the reinforcing bar.
2. The steel bar connection device according to claim 1, characterized in that, The locking mechanism includes two locking bolts, both of which pass through the first clamp and the second clamp. The two locking bolts are spaced apart on both sides of the reinforcing bar and extend in the opposite direction to the movement direction of the second clamp to the side of the second clamp away from the reinforcing bar. Each of the two locking bolts includes a screw and an adjusting nut. The adjusting nut passes through the screw and is located on the side of the second clamp away from the reinforcing bar. The adjusting nut can drive the second clamp to move towards the first clamp.
3. The steel bar connection device according to claim 2, characterized in that, Either of the two locking bolts further includes a fine-adjusting nut, which is inserted through the screw and distributed on the side of the second clamp facing the reinforcing bar. The fine-adjusting nut can drive the second clamp to move away from the first clamp.
4. The steel bar connection device according to claim 2, characterized in that, The locking mechanism further includes a limiting structure disposed on the first clamp and extending toward the second clamp. The limiting structure can abut against the side of the second clamp facing the reinforcing bar, thereby forming the receiving gap between the first clamp and the second clamp. The size of the receiving gap along the extension direction of the second clamp is smaller than the outer diameter of the reinforcing bar.
5. The steel bar connection device according to claim 1, characterized in that, The locking mechanism includes a torsion spring and a rotating shaft. The rotating shaft is rotatably connected to the first clamp and the second clamp. One end of the torsion spring is connected to the first clamp, and the other end of the torsion spring is engaged with the second clamp. The second clamp can rotate around the rotating shaft away from the first clamp, so that an accommodating gap is formed between the first clamp and the second clamp. Under the elastic force of the torsion spring, the second clamp can rotate toward the first clamp, so that the first clamp and the second clamp can clamp the steel bar.
6. The steel bar connection device according to claim 1, characterized in that, The connecting mechanism includes a connector and a connecting shaft that are connected to each other. The connector is connected to the output shaft of the motor, and the connecting shaft is connected to the clamping device. The axis of the output shaft of the motor coincides with the axis of the reinforcing bar, and the axis of the connecting shaft is on the same horizontal line as the axis of the reinforcing bar.
7. The steel bar connection device according to claim 1, characterized in that, The first clamp and the second clamp are respectively provided with a first biting part and a second biting part on the side facing the reinforcing bar. The first biting part and the second biting part can abut against the surface of the reinforcing bar to achieve clamping of the reinforcing bar.
8. The steel bar connection device according to claim 7, characterized in that, The first engagement portion is a first protrusion structure, and the second engagement portion is a second protrusion structure. The number of the first protrusion structures is at least two, and the at least two first protrusion structures are distributed at intervals along the first clamp. The number of the second protrusion structures is at least two, and the at least two second protrusion structures are distributed at intervals along the second clamp. The at least two first protrusion structures and the at least two second protrusion structures can abut against the surface of the reinforcing bar.
9. The steel bar connection device according to claim 7, characterized in that, The first engagement portion is a first arc-shaped groove, and the second engagement portion is a second arc-shaped groove. Both the first arc-shaped groove and the second arc-shaped groove are minor arcs. The inner diameter of both the first arc-shaped groove and the second arc-shaped groove is greater than or equal to the outer diameter of the reinforcing bar. The groove walls of both the first arc-shaped groove and the second arc-shaped groove can abut against the surface of the reinforcing bar.
10. The steel bar connection device according to claim 9, characterized in that, The walls of both the first and second arc-shaped grooves are rough surfaces, and the roughness parameter of the rough surface is Ra, which is 50μm≤Ra≤80μm.