Reinforcing steel bar deviation rectifying device and reinforcing steel bar cage connecting method

Abstract

The invention relates to the field of reinforcement correction, and provides a reinforcement correction device and a reinforcement cage connecting method. The reinforcing steel bar deviation rectifying device comprises a movable driving assembly and two clamping assemblies. The movable driving assembly is connected with the two clamping assemblies; the clamping assembly comprises a mounting seat, a fixed clamping seat, a first movable clamping seat, a second movable clamping seat and a clamping driving unit; the fixed clamping seat is arranged on the mounting seat; the first movable clamping base and the second movable clamping base are both hinged to the fixed clamping base. In the first state, the clamping driving unit drives the first movable clamping seat to rotate, so that the two steel bars are clamped between the first movable clamping seat and the fixed clamping seat, and the two steel bars are attached to each other; in the second state, the clamping driving unit drives the second movable clamping seat to rotate so as to clamp one reinforcing steel bar between the second movable clamping seat and the fixed clamping seat; the two clamping assemblies are used for clamping different steel bars correspondingly. The problems that a traditional steel bar deviation rectifying mode is low in efficiency and poor in deviation rectifying effect are solved.

Description

Technical Field

[0001] The present application relates to the field of steel bar correction, and in particular to a steel bar correction device and a steel bar cage connection method. Background Art

[0002] In the construction industry, rebar, as an important building material, is widely used in various building structures. Its usage is enormous and plays a key role in the stability of building structures. With the continuous development of the construction industry, the requirements for building quality and construction efficiency are also increasing. In large-scale construction projects, the numerous complex building structures require a large amount of rebar of various specifications and shapes, which makes the processing and connection of rebar extremely important. The connection of rebar cages is a crucial step, and its quality and efficiency directly affect the safety of the entire building and the construction progress.

[0003] Traditionally, the steel cages are connected by connecting the steel bars of two cages. Two common methods are used to connect the steel bars of two cages. One method involves aligning the outer walls of the two bars and then tying them together with stirrups. The other method involves aligning the ends of the two bars coaxially and then using threaded sleeves to connect them to the two bars.

[0004] During the actual connection process, it's difficult to perfectly align the rebars of the two cages, requiring correction. Currently, manual correction is often used. Workers rely on their experience and skills, using simple tools like crowbars to adjust the rebars one by one to the appropriate position. In other cases, a temporary positioning frame is constructed, within which the rebar is placed, using the structure to constrain the position of the rebar and achieve alignment.

[0005] However, these existing methods of steel bar correction have obvious drawbacks. Manual correction is not only inefficient and time-consuming, but also difficult to ensure due to human factors, resulting in the inability to effectively guarantee the quality of the steel cage connection. Summary of the Invention

[0006] In order to solve the problem that traditional steel bar correction methods are inefficient and have poor correction effects, the present application provides a steel bar correction device and a steel bar cage connection method.

[0007] The present application provides a steel bar correction device and a steel bar cage connection method using the following technical solutions: In a first aspect, the present application provides a steel bar correction device, comprising: a mobile drive assembly and two clamping assemblies; The mobile driving assembly is connected to the two clamping assemblies and is used to drive the two clamping assemblies to move closer to or away from each other; The clamping assembly includes a mounting seat, a fixed clamping seat, a first movable clamping seat, a second movable clamping seat and a clamping drive unit; the fixed clamping seat is arranged on the mounting seat; the first movable clamping seat and the second movable clamping seat are both hinged to the fixed clamping seat; the clamping drive unit has a first state and a second state; In the first state, the clamping drive unit is used to drive the first movable clamping seat to rotate, so as to clamp the two steel bars between the first movable clamping seat and the fixed clamping seat, and make the side walls of the two steel bars stick to each other; In the second state, the clamping drive unit is used to drive the second movable clamping seat to rotate, thereby clamping a steel bar between the second movable clamping seat and the fixed clamping seat; the two clamping assemblies are respectively used to clamp different steel bars.

[0008] By adopting the above technical solution, the mobile drive assembly can drive the two clamping assemblies to move closer to or farther from each other, making it convenient to adjust the clamping position of the steel bars; the clamping drive unit in the clamping assembly can drive the first mobile clamping seat to rotate in the first state, clamping the two steel bars between the first mobile clamping seat and the fixed clamping seat and making the side walls of the steel bars close to each other, which can meet the need for the two steel bars to be close to each other; in the second state, it can drive the second mobile clamping seat to rotate, clamping one steel bar between the second mobile clamping seat and the fixed clamping seat. The two clamping assemblies are used to clamp different steel bars respectively. After clamping, the mobile drive assembly can drive the two clamping assemblies to move closer to each other, thereby changing the direction of the ends of the steel bars, which can meet the need for the ends of the two steel bars to be coaxial. By switching between different states, different correction operations for the steel bars can be achieved.

[0009] Optionally, the fixed clamping seat has a first connecting portion, a second connecting portion and a clamping groove; The first connecting portion is hinged to the first movable clamping seat; the second connecting portion is hinged to the second movable clamping seat; The first movable clamping seat and the second movable clamping seat are both provided with an accommodating groove; the first movable clamping seat and the second movable clamping seat are used to rotate relative to the fixed clamping seat to clamp the steel bars in the clamping groove and the corresponding accommodating groove.

[0010] By adopting the above technical solution, the first connecting part and the second connecting part are respectively hinged to the first movable clamping seat and the second movable clamping seat, and cooperate with the accommodating grooves on the first movable clamping seat and the second movable clamping seat. When they rotate relative to the fixed clamping seat, the steel bars can be stably clamped in the clamping grooves and the corresponding accommodating grooves, thereby achieving effective clamping of the steel bars.

[0011] Optionally, the first connecting portion and the second connecting portion are respectively located on opposite sides of the clamping groove; and a spacing direction between the first connecting portion and the second connecting portion is perpendicular to a spacing direction between the two clamping components.

[0012] By adopting the above technical solution, the first connecting part and the second connecting part are respectively located on opposite sides of the clamping groove, which can reasonably layout the space and facilitate the clamping operation of the steel bars. The spacing direction between the first connecting part and the second connecting part is perpendicular to the spacing direction of the two clamping components, which can optimize the overall structural layout and is conducive to improving the working efficiency and stability of the steel bar correction device.

[0013] Optionally, there is a gap between the first connecting portion and the second connecting portion along a spacing direction between the two clamping assemblies.

[0014] By adopting the above technical solution, a gap is created between the first connecting portion and the second connecting portion along the spacing direction of the two clamping assemblies, so that the angle of rotation allowed by the first movable clamping seat and the second movable clamping seat can be larger.

[0015] Optionally, the clamping drive unit includes a drive module, a first slider, a second slider, a first connecting rod and a second connecting rod; The first slider and the second slider are both slidably connected to the mounting seat; The two ends of the first connecting rod are respectively hinged to the first slider and the first movable clamping seat; the two ends of the second connecting rod are respectively hinged to the second slider and the second movable clamping seat; In the first state, the driving module is used to drive the first slider to slide; In the second state, the driving module is used to drive the second sliding block to slide.

[0016] By adopting the above technical solution, the driving module can drive the first slider or the second slider to slide according to the first state and the second state respectively. The first slider and the first connecting rod drive the first movable clamping seat to rotate, and two steel bars can be clamped between the first movable clamping seat and the fixed clamping seat so that the side walls are attached to each other; the second slider and the second connecting rod drive the second movable clamping seat to rotate, and a steel bar can be clamped between the second movable clamping seat and the fixed clamping seat, thereby meeting different steel bar correction requirements.

[0017] Optionally, the driving module includes a driving member, a third slider and a connecting member; The third sliding block is slidably connected to the mounting seat; The connecting member is hinged to the third slider, and the connecting member is used to be detachably connected to one of the first slider and the second slider; The driving member is connected to the third slider and is used to drive the third slider to slide.

[0018] By adopting the above technical solution, the driving member can drive the third slider to slide. Because the connecting member is hinged to the third slider and can be detachably connected to one of the first and second sliders, it can drive the first or second slider to slide, and then cooperate with the first and second connecting rods to drive the first or second mobile clamping seat to rotate, achieving different steel bar clamping effects. In addition, the detachable connection method of the connecting member can flexibly switch and control the rotation of the first and second mobile clamping seats to meet different working requirements.

[0019] In a second aspect, the present application further provides a method for connecting a steel cage, comprising the following steps: Place the reinforcement cage; Clamp the steel bars to be connected of the two steel cages by two clamping assemblies so that the side walls of the steel bars to be connected of the two steel cages are in contact with each other or the ends are coaxial; The steel bars to be connected of the two steel cages are connected to achieve the connection of the two steel cages.

[0020] By adopting the above technical solution, the steel bars to be connected in the steel cage can be effectively clamped, so that the side walls of the steel bars to be connected are in contact or the ends are coaxial, which is convenient for subsequent connection and the connection of the two steel cages is completed.

[0021] Optionally, the method of clamping the steel bars to be connected of the two steel cages by two clamping assemblies so that the steel bars to be connected of the two steel cages are in contact with each other comprises the following steps: Make the side walls of the first steel bar to be connected contact with the fixed clamping seats of the two clamping assemblies respectively; The clamping drive units of the two clamping assemblies drive the corresponding first movable clamping seat to rotate, thereby squeezing the second steel bar to be connected, so that the two clamping assemblies clamp the two steel bars to be connected at the same time, and the side walls of the two steel bars to be connected are in contact with each other.

[0022] By adopting the above technical solution, the first steel bar to be connected can be made to stick to the fixed clamping seat, and the clamping drive unit can be used to drive the first movable clamping seat to rotate and squeeze the second steel bar to be connected, so that the two clamping components can clamp the two steel bars to be connected at the same time and make their side walls stick to each other, which is convenient for the subsequent connection of the steel bars to be connected of the two steel cages.

[0023] Optionally, the method of clamping the steel bars to be connected of the two steel cages by two clamping assemblies so that the ends of the steel bars to be connected of the two steel cages are coaxial comprises the following steps: The side wall of the steel bar to be connected is brought into contact with the fixed clamping seat of the clamping assembly, and then the second movable clamping seat is rotated relative to the fixed clamping seat to clamp the side wall of the steel bar to be connected, with each clamping assembly clamping one steel bar to be connected; The mobile driving assembly drives the two clamping assemblies to approach each other, thereby changing the directions of the ends of the steel bars to be connected until the ends of the two steel bars to be connected are coaxial.

[0024] By adopting the above technical solution, the second movable clamping seat is used to rotate to firmly clamp the side wall of the steel bar to be connected. After each clamping assembly clamps one steel bar to be connected, the two clamping assemblies are driven closer by the mobile driving assembly, which can make the ends of the two steel bars to be connected change direction and reach a coaxial state, facilitating the subsequent connection of the steel cage.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The mobile drive assembly drives the two clamping assemblies toward or away from each other, and the spacing can be flexibly adjusted to meet the clamping requirements of different parts of the steel bar. In the second state, the mobile drive assembly can adjust the ends of the two steel bars to be coaxial by driving the two clamping assemblies toward each other; 2. The third slider can be connected to the first slider or the second slider through a connecting member, so that the driving member can drive the third slider to slide, thereby causing the first movable clamping seat or the second movable clamping seat to rotate, thereby meeting different correction requirements; 3. The steel bar correction device and steel cage connection method avoid the problems of low efficiency and poor precision of manual correction, and ensure the quality of steel cage connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the steel bar correction device provided in this application.

[0027] Figure 2 It is a schematic diagram of the partial three-dimensional structure of the steel bar correction device provided in this application.

[0028] Figure 3 This is a schematic diagram of the first movable clamping seat of the steel bar correction device provided in this application contacting the steel bar.

[0029] Figure 4 This is a schematic diagram of the first movable clamping seat of the steel bar correction device provided in this application making two steel bars stick together.

[0030] Figure 5 This is a schematic diagram of the second movable clamping seat of the steel bar correction device provided in this application being used to clamp steel bars.

[0031] Figure 6It is a structural schematic diagram of another embodiment of the clamping assembly of the steel bar correction device provided in this application.

[0032] Description of reference numerals: 1. Mobile drive components; 2. Clamping assembly; 21. Mounting seat; 22. Fixed clamping seat; 221. First connecting portion; 222. Second connecting portion; 223. Clamping groove; 23. First movable clamping seat; 24. Second movable clamping seat; 25. Clamping drive unit; 251. Drive module; 2511. Drive member; 2512. Third slider; 2513. Connecting member; 252. First slider; 253. Second slider; 254. First connecting rod; 255. Second connecting rod; 200. Steel bars. DETAILED DESCRIPTION

[0033] The following is combined with Figures 1 to 6 This application is described in further detail.

[0034] like Figures 1 to 2 As shown, an embodiment of the present application discloses a steel bar correction device, including: a mobile drive component 1 and two clamping components 2.

[0035] Specifically, the moving drive assembly 1 is connected to the two clamping assemblies 2 and is used to drive the two clamping assemblies 2 to move closer to or away from each other. The moving drive assembly 1 can be a cylinder.

[0036] like Figures 1 to 5 As shown, the clamping assembly 2 includes a mounting base 21, a fixed clamping base 22, a first movable clamping base 23, a second movable clamping base 24 and a clamping drive unit 25. The mounting base 21 is connected to the movable drive assembly 1. The fixed clamping base 22 is provided on the mounting base 21.

[0037] The fixed clamping seat 22 has a first connecting portion 221, a second connecting portion 222, and a clamping slot 223. The first movable clamping seat 23 and the second movable clamping seat 24 are both provided with a receiving slot. The first connecting portion 221 is hinged to the first movable clamping seat 23, and the second connecting portion 222 is hinged to the second movable clamping seat 24.

[0038] The first movable clamping seat 23 and the second movable clamping seat 24 are used to rotate relative to the fixed clamping seat 22 to clamp the steel bar 200 in the clamping groove 223 and the corresponding accommodating groove.

[0039] like Figures 1 to 5 As shown, in some embodiments, the first connecting portion 221 and the second connecting portion 222 are located on opposite sides of the clamping groove 223. The spacing between the first connecting portion 221 and the second connecting portion 222 is perpendicular to the spacing between the two clamping components 2. This improves the symmetry of the structure and makes it easier to manufacture.

[0040] like Figure 6 As shown, in other embodiments, there is a gap between the first connecting portion 221 and the second connecting portion 222 along the spacing direction of the two clamping components 2, so that when one of the first movable clamping seat 23 and the second movable clamping seat 24 rotates, there is no need to worry about interference with the other, and the first movable clamping seat 23 and the second movable clamping seat 24 allow a larger rotation angle.

[0041] The clamping drive unit 25 has a first state and a second state; like Figures 1 to 4 As shown, in the first state, the clamping drive unit 25 is used to drive the first movable clamping seat 23 to rotate so as to clamp the two steel bars 200 between the accommodating groove of the first movable clamping seat 23 and the clamping of the fixed clamping seat 22, and squeeze the steel bars 200 so that the side walls of the two steel bars 200 are attached to each other.

[0042] like Figure 5 As shown, in the second state, the clamping drive unit 25 is used to drive the second movable clamping seat 24 to rotate, thereby clamping a steel bar 200 between the second movable clamping seat 24 and the fixed clamping seat 22. The two clamping assemblies 2 are used to clamp different steel bars 200 respectively.

[0043] In the second state, the two clamping assemblies 2 each clamp a steel bar 200, and then the moving driving assembly 1 drives the two clamping assemblies 2 to approach each other. During the process of approaching each other, the two clamping assemblies 2 can change the end direction of the steel bar 200, thereby adjusting the two steel bars 200 to be coaxial.

[0044] like Figures 2 to 5 As shown, in some embodiments, the clamping drive unit 25 includes a drive module 251, a first slider 252, a second slider 253, a first connecting rod 254, and a second connecting rod 255. The first slider 252 and the second slider 253 are both slidably connected to the mounting base 21. The two ends of the first connecting rod 254 are respectively hinged to the first slider 252 and the first movable clamping base 23, and the two ends of the second connecting rod 255 are respectively hinged to the second slider 253 and the second movable clamping base 24.

[0045] In the first state, the driving module 251 is used to drive the first slider 252 to slide, and then drive the first movable clamping seat 23 to rotate through the first connecting rod 254 .

[0046] In the second state, the driving module 251 is used to drive the second sliding block 253 to slide, and then drive the second movable clamping seat 24 to rotate through the second connecting rod 255 .

[0047] In some embodiments, the driving module 251 includes a driving member 2511, a third slider 2512, and a connecting member 2513. The third slider 2512 is slidably connected to the mounting seat 21. The connecting member 2513 is hingedly connected to the third slider 2512 and can be detachably connected to one of the first slider 252 and the second slider 253, thereby enabling the third slider 2512 to be connected to the first slider 252 or the second slider 253. The driving member 2511 is connected to the third slider 2512 and is configured to drive the third slider 2512 to slide. When the connecting member 2513 is connected to the first slider 252, the driving member 2511 can simultaneously drive the first and third sliders 252 and 2512 to slide, thereby rotating the first movable clamping seat 23. Similarly, when the connecting member 2513 is connected to the second slider 253, the driving member 2511 can simultaneously drive the second and third sliders 253 and 2512 to slide, thereby rotating the second movable clamping seat 24.

[0048] The driving member 2511 can be a cylinder. A cavity is defined within the mounting base 21 for receiving the driving member 2511. The connection method between the first and second sliders 252, 253 and the connecting member 2513 is not strictly limited and can be, for example, a snap-fit ​​connection. Specifically, the first and second sliders 252, 253 are provided with raised portions, and the connecting member 2513 is provided with a snap-fit ​​interface. The connecting member 2513 can be flipped so that the snap-fit ​​interface snaps into engagement with the raised portion on the first or second slider 252, 253.

[0049] The present invention also provides a method for connecting a steel cage, comprising the following steps: S100: Place the reinforcement cage.

[0050] S200: Clamp the steel bars 200 to be connected of two steel cages by two clamping assemblies 2 so that the side walls of the steel bars 200 to be connected of the two steel cages are in contact or the ends are coaxial.

[0051] Specifically, the steps of clamping the steel bars 200 to be connected of two steel cages by two clamping assemblies 2 so that the side walls of the steel bars 200 to be connected of the two steel cages are in contact with each other include: The first step is to make the side walls of the first steel bar 200 to be connected fit against the clamping grooves 223 of the fixed clamping seats 22 of the two clamping assemblies 2 respectively.

[0052] Step 2: The clamping drive units 25 of the two clamping assemblies 2 drive the corresponding first movable clamping seat 23 to rotate, so that the first movable clamping seat 23 hooks and squeezes the second steel bar 200 to be connected until the second steel bar 200 to be connected moves to be in contact with the first steel bar 200 to be connected, so that the two clamping assemblies 2 clamp the two steel bars 200 to be connected at the same time, and the side walls of the two steel bars 200 to be connected are in contact.

[0053] The step of clamping the steel bars 200 to be connected of the two steel cages by the two clamping assemblies 2 so that the ends of the steel bars 200 to be connected of the two steel cages are coaxial includes: The first step is to make the side wall of a steel bar 200 to be connected fit against the fixed clamping seat 22 of one of the clamping assemblies 2, and then rotate the second movable clamping seat 24 relative to the fixed clamping seat 22 to clamp the side wall of the steel bar 200 to be connected; in the same way, make the other clamping assembly 2 clamp another steel bar 200 to be connected, so that each clamping assembly 2 clamps one steel bar 200 to be connected.

[0054] Step 2: The moving driving assembly 1 drives the two clamping assemblies 2 to approach each other. During the approaching process, the clamping assembly 2 can change the direction of the ends of the steel bars 200 to be connected until the ends of the two steel bars 200 to be connected are coaxial.

[0055] S300: Connecting the steel bars 200 to be connected of the two steel cages to achieve connection of the two steel cages.

[0056] Specifically, there are no mandatory restrictions on the connection method between the steel bars 200 to be connected. For example, for two steel bars 200 to be connected with adjacent side walls, they can be tied together with stirrups; for two steel bars 200 to be connected with coaxial ends, threads can be provided on the coaxial end side walls and then threaded together using a threaded sleeve.

Claims

1. A steel bar correction device, characterized in that: include: A mobile driving assembly (1) and two clamping assemblies (2); The mobile driving assembly (1) is connected to the two clamping assemblies (2) and is used to drive the two clamping assemblies (2) to move closer to or farther from each other; The clamping assembly (2) comprises a mounting seat (21), a fixed clamping seat (22), a first movable clamping seat (23), a second movable clamping seat (24) and a clamping drive unit (25); the fixed clamping seat (22) is arranged on the mounting seat (21); the first movable clamping seat (23) and the second movable clamping seat (24) are both hinged to the fixed clamping seat (22); the clamping drive unit (25) has a first state and a second state; In the first state, the clamping drive unit (25) is used to drive the first movable clamping seat (23) to rotate, so as to clamp the two steel bars (200) between the first movable clamping seat (23) and the fixed clamping seat (22), and to make the side walls of the two steel bars (200) stick to each other; In the second state, the clamping drive unit (25) is used to drive the second movable clamping seat (24) to rotate, thereby clamping a steel bar (200) between the second movable clamping seat (24) and the fixed clamping seat (22); the two clamping assemblies (2) are respectively used to clamp different steel bars (200).

2. The steel bar deviation correction device according to claim 1, characterized in that: The fixed clamping seat (22) has a first connecting portion (221), a second connecting portion (222) and a clamping groove (223); The first connecting portion (221) is hinged to the first movable clamping seat (23); the second connecting portion (222) is hinged to the second movable clamping seat (24); The first movable clamping seat (23) and the second movable clamping seat (24) are both provided with an accommodating groove; the first movable clamping seat (23) and the second movable clamping seat (24) are used to rotate relative to the fixed clamping seat (22) to clamp the steel bar (200) in the clamping groove (223) and the corresponding accommodating groove.

3. The steel bar correction device according to claim 2, characterized in that: The first connecting portion (221) and the second connecting portion (222) are respectively located on opposite sides of the clamping groove (223); the spacing direction between the first connecting portion (221) and the second connecting portion (222) is perpendicular to the spacing direction between the two clamping assemblies (2).

4. The steel bar correction device according to claim 2, characterized in that: Along the spacing direction of the two clamping assemblies (2), there is a gap between the first connecting portion (221) and the second connecting portion (222).

5. The steel bar deviation correction device according to claim 1, characterized in that: The clamping drive unit (25) comprises a drive module (251), a first slider (252), a second slider (253), a first connecting rod (254) and a second connecting rod (255); The first sliding block (252) and the second sliding block (253) are both slidably connected to the mounting seat (21); The two ends of the first connecting rod (254) are respectively hinged to the first slider (252) and the first movable clamping seat (23); the two ends of the second connecting rod (255) are respectively hinged to the second slider (253) and the second movable clamping seat (24); In the first state, the driving module (251) is used to drive the first sliding block (252) to slide; In the second state, the driving module (251) is used to drive the second sliding block (253) to slide.

6. The steel bar deviation correction device according to claim 5, characterized in that: The driving module (251) comprises a driving member (2511), a third sliding block (2512) and a connecting member (2513); The third slider (2512) is slidably connected to the mounting seat (21); The connecting member (2513) is hinged to the third slider (2512), and the connecting member (2513) is used to be detachably connected to one of the first slider (252) and the second slider (253); The driving member (2511) is connected to the third slider (2512) and is used to drive the third slider (2512) to slide.

7. A method for connecting a steel cage, characterized in that: The following steps are involved: Place the reinforcement cage; Clamping the two steel bars (200) to be connected of the steel cages by two clamping assemblies (2) such that the side walls of the steel bars (200) to be connected of the two steel cages are in contact with each other or the ends are coaxial; The steel bars (200) to be connected of the two steel cages are connected to achieve the connection of the two steel cages.

8. The reinforcement cage connection method according to claim 7, characterized in that: The method of clamping the two steel bars (200) to be connected of the steel cages by two clamping assemblies (2) so that the steel bars (200) to be connected of the two steel cages are attached to each other comprises the following steps: The side walls of the first steel bar (200) to be connected are respectively attached to the fixed clamping seats (22) of the two clamping assemblies (2); The clamping drive units (25) of the two clamping assemblies (2) both drive the corresponding first movable clamping seat (23) to rotate, thereby squeezing the second steel bar (200) to be connected, so that the two clamping assemblies (2) both clamp the two steel bars (200) to be connected at the same time, and the side walls of the two steel bars (200) to be connected are in contact with each other.

9. The method for connecting a steel cage according to claim 7, wherein: The method of clamping the two steel bars (200) to be connected of the steel cages by two clamping assemblies (2) so that the ends of the steel bars (200) to be connected of the two steel cages are coaxial comprises the following steps: The side wall of the steel bar (200) to be connected is brought into contact with the fixed clamping seat (22) of the clamping assembly (2), and then the second movable clamping seat (24) is rotated relative to the fixed clamping seat (22), thereby clamping the side wall of the steel bar (200) to be connected, and each of the clamping assemblies (2) clamps one steel bar (200) to be connected; The moving drive assembly (1) drives the two clamping assemblies (2) to approach each other, thereby causing the ends of the steel bars (200) to be connected to change direction until the ends of the two steel bars (200) to be connected are coaxial.

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