Clamping device for lap welding of reinforcing steel bars

Abstract

The utility model relates to the technical field of engineering construction, in particular to a clamping device for lap welding of reinforcing steel bars, which comprises supporting structures independently arranged on main body sections of two reinforcing steel bars to be welded and clamping structures arranged on bent sections of the two reinforcing steel bars to be welded. The sliding block is installed on the guide rail, a base plate is installed on the sliding block, an installation shaft with the axis perpendicular to the plate face direction of the base plate is fixed to the middle of the base plate, a clamp used for installing and clamping two to-be-welded steel bar bent sections is rotatably installed on the installation shaft, and the supporting structure is used for supporting the main body sections of the to-be-welded steel bars. The bent sections of the ends of the reinforcing steel bars to be welded are clamped and fixed through the clamps on the clamping structures to be welded, the clamps are rotationally installed on the base plate, the base plate can slide along the guide rails through the sliding blocks, the positions and the directions of the clamps can be adjusted at the same time, and the lap joint portions of the bent sections of the two reinforcing steel bars to be welded fall on the positions of the clamps to be clamped, fixed and welded.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a clamping device used for lap welding of steel bars. Background Art

[0002] The connection methods of steel bars include binding connection, mechanical connection and welding connection. The binding connection method is generally suitable for steel bars with small diameters. Mechanical connection is widely used. It has the advantages of high connection quality, stability and reliability, good fatigue resistance, and a good construction environment. However, the steel bar connection parts need to be processed, and sleeves and other connectors are required. The process is relatively complicated. The welding connection method is more convenient and does not require processing of the steel bars, saving time and labor. It will not damage the interface agent of the material. It can be directly connected to components of any shape, with high structural rigidity and good integrity. Although the welding connection method of steel bars has many advantages, there are the following problems when welding steel bars:

[0003] On the one hand, the steel bars at the lap welding parts need to be clamped and fixed, but there are often problems such as loose clamping and large gaps in the alignment parts, which leads to poor welding quality and affects the connection strength;

[0004] On the other hand, in many construction situations, the ends of the steel bars are bent, and then the bent sections are overlapped and welded. Since the bent sections of the steel bars are not in a straight line with the main section, ordinary clamp structures cannot be used for clamping and welding. In addition, this structure requires a lot of time to adjust during the overlap alignment process, and the construction efficiency is very low.

[0005] In addition, since the lap-welded steel bars have a certain length, the ends of the two steel bars to be welded are too high, which results in the steel bar welding part having a scissor-shaped structure that cannot be aligned, which also affects the welding quality of the steel bars.

[0006] Therefore, during the steel bar lap welding construction process, how to quickly align the ends of the two steel bars to be welded up and down to avoid the scissors difference, and to achieve horizontal alignment, reduce the splicing gap, and at the same time clamp and fix the welding parts, has become a technical issue that needs to be considered during the steel bar lap construction process. Utility Model Content

[0007] At least one of the purposes of the invention of the utility model is to provide a clamping device for lap welding of steel bars, in order to solve the problem that when lap welding is performed on steel bars with bent ends, the bent section of the steel bars and the main section are not on the same straight line, which makes it impossible to use ordinary clamps for clamping and welding. The clamping device adopts a clamp that can rotate on the clamping structure to adjust the position of the lap joint of two steel bars to be welded, and arranges a clamp structure with adjustable position to clamp and fix the bent sections of the two steel bars for welding, thereby improving the adjustment efficiency of the steel bar lap and the welding quality.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model includes the following aspects:

[0009] A clamping device for lap welding of steel bars comprises a supporting structure independently arranged on the main sections of two steel bars to be welded, and a clamping structure arranged on the bent sections of two steel bars to be welded, the clamping structure comprises a guide rail installed on the ground, and a slider installed on the guide rail, a seat plate is installed on the slider, a mounting shaft with an axis perpendicular to the seat plate surface is fixed in the middle of the seat plate, and a clamp for mounting and clamping the two bent sections of the steel bars to be welded is rotatably installed on the mounting shaft.

[0010] The supporting structure is used to support the main section of the steel bar to be welded. The end bent section of the steel bar to be welded is clamped and fixed by the clamp on the clamping structure for welding. The clamp is rotatably installed on the seat plate. The seat plate can slide along the guide rail through the slider, so that the clamp can adjust the position and direction at the same time, so that the overlapping parts of the bent sections of the two steel bars to be welded fall on the clamp position for clamping, fixing and welding.

[0011] As a preferred embodiment of the present utility model, the clamp includes a base plate, support plates are vertically connected to both sides of the base plate, the support plates on both sides are 30 to 60 mm away from the sides of the base plate, and the two ends of the base plate are respectively connected to clamping plates that are 50 to 100 mm higher than the top of the support plates, including a first clamping plate and a second clamping plate, a tightening column is installed on the upper part of the first clamping plate, and the tightening column is arranged in the middle of the height range of the first clamping plate above the top of the support plate.

[0012] The bottom plate is used as the basis of the clamp to connect the support plate and the clamping plate. The clamping plate is higher than the top of the support plate to form a clamping groove space, which is used to place the splicing parts of the steel bars to be welded. A tightening column is set, and the overlapping parts of the two steel bars to be welded are pressed and fixed on the clamping plate on the other side through the tightening column, so as to fix them for welding.

[0013] As a preferred solution of the utility model, the base plate is provided with a plurality of bolt holes, and locking studs are installed in the bolt holes at any two diagonal sides, so that the locking studs fix the base plate to the seat plate through the bolt holes.

[0014] Bolt holes are set and locking studs are installed. The locking studs are tightened to make the ends of the bolts close to the base plate, and the nuts are tightened to fix the clamp relative to the base plate, thereby achieving the purpose of fixing, and then the steel bar lap joint fixed by the welding clamp is welded.

[0015] As a preferred solution of the utility model, the end of the tightening column is connected with a square steel plate, and the axis of the tightening column is perpendicular to the square steel plate. The square steel plate is used as a structure for tightening the overlapping part of two steel bars to be welded, which can increase the tightening area and tightening range, avoid the problem of tightening deviation or unstable tightening, and ensure the tightening effect.

[0016] As a preferred solution of the utility model, the second clamping plate is arranged on the inner side of the ends of the support plates on both sides, and is hingedly connected to a snap-fit ​​plate on the side of the first clamping plate. A clamping column and a clamping nut for tightening the snap-fit ​​plate are provided on the second clamping plate. The clamping nut is welded to the side of the second clamping plate, so that after the snap-fit ​​plate clamps the steel bars to be welded, the clamping column fixes the snap-fit ​​plate.

[0017] At the same time, a buckling plate is provided to buckle and press the steel bars to be welded from the top to avoid misalignment in the upper and lower directions, thereby further improving the lap welding quality.

[0018] As a preferred solution of the utility model, the support structure includes a crossbeam rotatably mounted on a support seat, and the crossbeam is provided with a clamping groove for placing a main section of a steel bar to be welded.

[0019] The supporting structure is arranged at both ends of the clamping structure, and a rotatably installed crossbeam is adopted. The main section of the steel bar to be welded is placed on the supporting structure, and the crossbeam is rotatably installed on the supporting seat, so that the main section of the steel bar to be welded can adjust its axial angle by rotation, thereby ensuring that the bent sections of the two steel bars to be welded can be aligned by rotational overlap, and a clamping groove is arranged to prevent the steel bars to be welded from slipping off the crossbeam.

[0020] As a preferred solution of the utility model, the clamping groove includes a first rolling shaft and a second rolling shaft arranged vertically, the second rolling shaft is slidably connected to the beam, and a locking nut for fixing the second rolling shaft is provided on the second rolling shaft.

[0021] Two side-by-side rolling shafts are used as clamping parts to form a clamping groove for placing the main section of the steel bar to be welded. The clamping groove can limit the approximate position of the steel bar to be welded to prevent it from falling or flipping left and right. At the same time, the steel bar to be welded can be rolled and pulled in the clamping groove through the rolling shaft, which is convenient for adjusting the position of the steel bar to be welded. The first rolling shaft is fixed, and the width of the clamping groove is adjusted according to the second rolling shaft.

[0022] The first rolling shaft and the second rolling shaft may also be configured to be slidably connected to the crossbeam.

[0023] As a preferred solution of the utility model, the crossbeam includes a fixed cross bar and a rolling cross bar, the fixed cross bar includes a long strip, ear plate seats are installed at both ends of the fixed cross bar, the rolling cross bar is installed on the ear plate seats, and a strip hole is opened on one side of the fixed cross bar near the side, and the strip hole is used to install the first rolling shaft and the second rolling shaft.

[0024] A long strip is set as a fixed cross bar and installed on the support seat, and a rolling cross bar is installed above the long strip. When the steel bars to be welded are placed on the cross beam, the position can be adjusted by pulling the rolling cross bar. The first rolling axis and the second rolling axis are slidably installed on the strip holes of the fixed cross bar. The positions of the first rolling axis and the second rolling axis can be adjusted according to the diameter and position of the steel bars to be welded, so that the support structure is more convenient for steel bar lap welding.

[0025] As a preferred solution of the utility model, the crossbeam includes a rolling cross bar and a fixed cross bar arranged side by side, the top of the rolling cross bar is higher than the fixed cross bar, both ends of the rolling cross bar are rollingly mounted on the ear plate seat, the fixed cross bar is fixedly mounted on the ear plate seat, and the first rolling axis and the second rolling axis are adjustably mounted on the fixed cross bar.

[0026] A rolling cross bar and a fixed cross bar are set at the same time, and the top of the rolling cross bar is higher than the fixed cross bar, so that when the steel bars to be welded are placed on the beam, the position can be easily adjusted by pulling the rolling cross bar. The first rolling axis and the second rolling axis are connected and installed on the fixed cross bar, which is convenient for fixing and adjusting the position of the second rolling axis, thereby adjusting the width of the clamping groove to adapt to the diameter of the steel bars to be welded.

[0027] As a preferred solution of the utility model, the number of the guide rails is two, the two guide rails are arranged side by side, and the laying direction of the guide rails is perpendicular to the axial direction of the main section of the steel bar to be welded.

[0028] The guide rails are arranged side by side on the ground, support blocks are set under the guide rails, mounting screw holes are set on the guide rails, and the guide rails are fixed to the ground support blocks by anchor bolts. The support blocks are embedded in the ground. After the guide rails are fixed, the overall position of the seat plate is adjusted by sliding the position of the slider, and then the clamp is locked and fixed to the seat plate by the locking studs. Then, the position of the clamp is adjusted by the mounting shaft on the seat plate so that the bent sections of the two steel bars to be welded are located in the clamp position for fixed welding.

[0029] In summary, due to the adoption of the above technical solution, the utility model has at least the following beneficial effects:

[0030] 1. A support structure is provided to support the main section of the steel bar to be welded. The end bending section of the steel bar to be welded is clamped and fixed by a clamp on the clamping structure for welding. The clamp is rotatably mounted on the seat plate. The seat plate can slide along the guide rail through a slider, so that the clamp can adjust the position and direction at the same time, so that the overlapping parts of the bending sections of the two steel bars to be welded fall on the clamp position for clamping, fixing and welding;

[0031] 2. A square steel plate is used as the front end structure of the tightening column to tighten the overlapping parts of the two steel bars to be welded, which can increase the tightening area and tightening range, avoid the problem of top deviation or unstable tightening, and ensure the tightening effect;

[0032] 3. The supporting structure is set at both ends of the clamping structure, and a rotatably installed crossbeam is used. The main section of the steel bar to be welded is placed on the supporting structure. The crossbeam is rotatably installed on the support seat, so that the main section of the steel bar to be welded can adjust its axial angle by rotation, thereby ensuring that the bent sections of the two steel bars to be welded can be aligned by rotation and overlap, and a clamping groove is set to prevent the steel bars to be welded from slipping off the crossbeam. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The utility model is a schematic structural diagram of a clamping device for lap welding of steel bars.

[0034] Figure 2 It is a three-dimensional structural schematic diagram of the clamping structure and the clamp in the clamping device of the utility model.

[0035] Figure 3 It is a structural schematic diagram of the clamping structure and the clamp in the clamping device of the utility model.

[0036] Figure 4 It is a schematic diagram of the three-dimensional structure of the supporting structure in the clamping device of the utility model.

[0037] Figure 5 The utility model is a schematic structural diagram of another embodiment of the clamping device for lap welding of steel bars.

[0038] Markings in the figure: 1-steel bars to be welded, 101-main section, 102-bending section, 2-support structure, 21-support seat, 22-crossbeam, 221-fixed crossbar, 2211-strip hole, 222-rolling crossbar, 23-clamping groove, 231-first rolling axis, 232-second rolling axis, 24-ear plate seat, 25-rotation axis, 3-clamping structure, 301-guide rail, 302-slider , 303-seat plate, 304-installing shaft, 305-positioning slider, 4-clamp, 401-bottom plate, 4011-bolt hole, 4012-locking stud, 402-support plate, 403-clamping plate, 4031-first clamping plate, 4032-second clamping plate, 404-tightening column, 405-square steel plate, 406-snap-in plate, 407-clamping column, 408-clamping nut. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments to make the purpose, technical solutions and advantages of the present invention more clearly understood. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0040] In the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances. Example

[0041] Figure 1The schematic diagram of the structure of the clamping device for lap welding of steel bars of an exemplary embodiment of the utility model is shown. The clamping device for lap welding of steel bars of this embodiment is mainly used for lap welding of steel bars 1 to be welded. The steel bars 1 to be welded include a main body section 101 and a bending section 102. The clamping device includes a support structure 2 separately arranged at the main body sections 101 of two steel bars 1 to be welded, and a clamping structure 3 arranged at the bending sections 102 of the two steel bars 1 to be welded. The clamping structure 3 includes a guide rail 301 installed on the ground, and a support structure 3 installed on the guide rail 301. The slider 302 is mounted on the slider 302, and a seat plate 303 is mounted on the slider 302. A mounting shaft 304 whose axis is perpendicular to the plate surface direction of the seat plate 303 is fixed in the middle of the seat plate 303, and a clamp 4 is rotatably mounted on the mounting shaft 304. The clamp 4 is used to clamp the bent sections 102 of the two steel bars 1 to be welded. The support structure 2 is used to support the main section 101 of the steel bars 1 to be welded. The end bent sections 102 of the steel bars 1 to be welded are clamped and fixed by the clamp 4 on the clamping structure 3 for welding. The clamp 4 is rotated The seat plate 303 can slide along the guide rail 301 through the slider 302, so that the clamp 4 can adjust the position and direction at the same time, and then the overlapping parts of the bent sections 102 of the two steel bars 1 to be welded fall on the clamp position for clamping, fixing and welding. The number of the guide rails 301 is two, and the two guide rails 301 are arranged side by side. The laying direction of the guide rails 301 is perpendicular to the axial direction of the main section 101 of the steel bar 1 to be welded. A support block is set below the guide rail 301, and the support block is embedded. On the ground, the guide rails 301 are arranged side by side at the support block of the ground. The guide rails 301 are provided with mounting screw holes, and the guide rails 301 are fixed to the ground support block by ground anchor bolts. After the guide rails 301 are fixed, the overall position of the seat plate 303 is adjusted by sliding the position of the slider 302. After the position of the seat plate 303 is determined, the seat plate 303 is limited and fixed by the positioning slider 305, so that the seat plate 303 is fixed on the guide rails 301. When the sliders 302 on the two guide rails 301 are fixed, the seat plate 303 is fixed to the guide rails 301. 02, positioning sliders 305 are arranged in front and behind, and the positioning sliders 305 are slid to a position close to the slider 302. Bolt holes are opened on the positioning sliders 305, which are locked and fixed on the guide rails 301 through locking studs 4012, and then the position of the clamp 4 is adjusted on the mounting shaft 304 on the seat plate 303, so that the bent sections 102 of the two steel bars 1 to be welded are located in the clamp position, and the clamp 4 is locked and fixed on the seat plate 303 through the locking studs 4012 on the bottom plate 401, and then the overlapping parts are welded.

[0042] like Figure 2 and Figure 3As shown, the clamp 4 includes a base plate 401, and support plates 402 are vertically connected on both sides of the base plate 401. The support plates 402 on both sides are 30 to 60 mm away from the sides of the base plate 401. The two ends of the base plate 401 are respectively connected with clamping plates 403 that are 50 to 100 mm higher than the top of the support plate 402, including a first clamping plate 4031 and a second clamping plate 4032. The upper part of the first clamping plate 4031 has a hole, and a tightening column 404 is installed in the hole. The tightening column 404 is arranged perpendicular to the surface direction of the clamping plate, and the tightening column 404 is arranged in the middle of the height range of the first clamping plate 4031 above the top of the support plate 402. The base plate 401, the support plate 402 and the clamping plate 403 are all welded and connected.

[0043] The bottom plate 401 is used as the basis of the clamp to connect the support plate 402 and the clamping plate 403. The clamping plate 403 is higher than the top of the support plate 402 to form a clamping groove space for placing the splicing part of the steel bar 1 to be welded. By arranging a tightening column 404 on the first clamping plate 4031, the overlapping part of the two steel bars to be welded is pressed and fixed on the second clamping plate 4032 on the other side by the tightening column 404, so as to fix the welding. The end of the tightening column 404 is connected to the square steel plate 405, and the rear end is located on the outside of the first clamping plate 4031 and is provided with a fastening nut. The axis of the tightening column 404 is perpendicular to the square steel plate 405. The square steel plate 405 is used as The structure of tightening the overlapping parts of the two steel bars 1 to be welded can avoid the problem of top deviation or unstable top tightening and ensure the top tightening effect. The second clamping plate 4032 is connected to the inner side of the end of the support plate 402, and a buckle plate 406 is hingedly connected to the side of the first clamping plate 4031. The buckle plate 406 is a concave structure with protrusions at both ends and a sinking in the middle. When welding the two steel bars 1 to be welded, the buckle plate 406 is first rotated to the outside of the first clamping plate 4031 to present an open state. After splicing the two steel bars 1 to be welded, the buckle plate is rotated to the side of the second clamping plate 4032, and a buckle plate for tightening is provided on the top of the side of the first clamping plate 4031. The clamping column 407 and the clamping nut 408 of 406 are welded to the side of the first clamping plate 4031. After the buckling plate 406 buckles and clamps the side-by-side overlapped parts of the two steel bars 1 to be welded, the clamping column 407 is adjusted to tighten them. After the buckling plate 406 is set, the steel bars 1 to be welded can be buckled and pressed from the top to avoid misalignment in the up and down directions, further improving the lap welding quality. After the buckling plate 406 is clamped, the position of the top tightening column 404 is adjusted to tighten and fix the two steel bars 1 to be welded on the second clamping plate 4032 in the horizontal direction. In addition, in order to further ensure the stability of the clamp holding the steel bars to be welded, the bottom plate 401 is provided with A plurality of bolt holes 4011 are provided, and locking studs 4012 are installed in the bolt holes 4011 at any two diagonal sides, so that the locking studs 4012 fix the base plate 401 to the seat plate 303 through the bolt holes 4011. The bolt holes 4011 are provided and the locking studs 4012 are installed. The locking studs 4012 are tightened so that the ends of the locking studs 4012 are pressed against the seat plate 303, and the clamp is fixed relative to the seat plate 303 by tightening the nuts to achieve the purpose of fixing. Then, the steel bar lap joint fixed by the welding clamp is provided with a plurality of bolt holes 4011, which can prevent some bolt holes 4011 from being outside the projection range of the seat plate 303 after the position of the clamp 4 is adjusted.

[0044] like Figure 1 and Figure 4The structure of the support structure 2 is shown, the support structure 2 includes a crossbeam 22 rotatably mounted on a support seat 21, the crossbeam 22 is provided with a clamping groove 23 for placing the main section 101 of the steel bar 1 to be welded, the support structure 2 is arranged at both ends of the clamping structure 3, and the crossbeam 22 is rotatably mounted, the main section 101 of the steel bar 1 to be welded is placed in the clamping groove 23 of the support structure 2, the crossbeam 22 is rotatably mounted on the support seat 21, specifically a support rotation axis 25, the bottom end of the support rotation axis 25 is fixedly connected to the support seat 21, and the top end is rotatably connected to the crossbeam 22, so that the main section 101 of the steel bar 1 to be welded can adjust its axial angle by rotation, thereby ensuring that the bent sections 102 of the two steel bars 1 to be welded can be aligned by rotational overlap, the support seat 21 is made of square or circular steel plates, the top is fixedly connected to the rotation axis 25, and the clamping groove 23 adopts a first rolling axis 2 arranged vertically The first rolling shaft 231 and the second rolling shaft 232 are formed, the first rolling shaft 231 and the second rolling shaft 232 are slidably connected to the cross beam 22, and the first rolling shaft 231 and the second rolling shaft 232 are provided with locking nuts 233 for fixing their own positions. The first rolling shaft 231 and the second rolling shaft 232 have the same structure, including bolts fixed by locking nuts 233. The positions of the two bolts are first adjusted, and then fixed by locking nuts. After fixing, two sleeves are sleeved on the bolts, and the inner diameter of the sleeves is larger than the diameter of the bolts, thereby forming a rotatable first rolling shaft 231 and a second rolling shaft 232. Two side-by-side rolling shafts are used as a clamping structure to form a clamping groove 23 for placing the main section 101 of the steel bar 1 to be welded. The clamping groove 23 can limit the approximate position of the steel bar 1 to be welded to prevent it from flipping and rolling left and right, and the steel bar 1 to be welded can be easily adjusted in the clamping groove 23 by pulling the rolling shaft, and pulling is easier and more labor-saving.

[0045] As one of the preferred embodiments, the crossbeam 22 includes a fixed crossbar 221 and a rolling crossbar 222. The fixed crossbar 221 adopts a long strip plate structure, and ear plate seats 24 are installed at both ends of the fixed crossbar 221. The rolling crossbar is installed on the ear plate seat 24. The fixed crossbar 221 is provided with a strip hole 2211 near the side edge, and the strip hole 2211 is used to install the first rolling shaft 231 and the second rolling shaft 232. The long strip plate is used as the fixed crossbar 221, and it is installed on the support seat 21, and the rolling crossbar 222 is installed through the ear plate seat plate 24 at both ends of the long strip plate. Above the fixed cross bar 221, when the steel bar 1 to be welded is placed on the cross beam 22, the rolling cross bar 222 is used to facilitate pulling for position adjustment. The first rolling axis 231 and the second rolling axis 232 are slidably installed on the strip hole 2211 of the fixed cross bar 221. The positions of the first rolling axis 231 and the second rolling axis 232 can be adjusted according to the diameter and position of the steel bar to be welded, so that the supporting structure is more convenient for steel bar lap welding. The specific structure of the rolling cross bar 222 includes a support shaft installed on the ear plate seat 24, and a sleeve is mounted on the support shaft inside the ear plate seat 24, so that the sleeve can roll on the support shaft.

[0046] Another implementation of the crossbeam 22 is: the rolling cross bar 222 and the fixed cross bar 221 are installed side by side on the ear plate seat plate 24, the bottom of the fixed cross bar 221 is rotatably connected to the support seat 21, and the top of the rolling cross bar 222 is higher than the fixed cross bar 221, both ends of the rolling cross bar 222 are rollingly installed on the ear plate seat plate 24, and both ends of the fixed cross bar 221 are fixedly installed on the ear plate seat plate 24, the first rolling axis 231 and the second rolling axis 232 are installed on the fixed cross bar 221 to form a clamping groove 23. With this structure, when the steel bar 1 to be welded is placed on the crossbeam 22, the position can be easily pulled and adjusted by the rolling cross bar 222. The first rolling axis 231 and the second rolling axis 232 are adjustably installed on the fixed cross bar 221, and are used to adjust the width of the clamping groove 23 to adapt to the diameter of the steel bar to be welded.

[0047] The clamping device for lap welding of steel bars of the present technical solution can also be used in the case where the ends of the steel bars 1 to be welded are directly lap welded, such as Figure 5 As shown, at this time, the supporting structures 2 and the clamping structures 3 on both sides are arranged in a roughly straight line, the ends of the steel bars to be welded are overlapped, and the clamps 4 are adjusted to fix the overlapped parts before welding.

[0048] In this technical solution, since the clamp 4 is rotatably mounted on the seat plate 303 , the support structure 2 can also adopt other simple structural forms to support the main section 101 of the steel bar 1 to be welded to the same height as the bending section 102 .

[0049] The above is only a detailed description of the specific implementation of the present invention, rather than a limitation of the present invention. Various substitutions, modifications and improvements made by those skilled in the relevant art without departing from the principle and scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A clamping device for lap welding of steel bars, characterized in that: The clamping device comprises a support structure (2) independently arranged at the main body section (101) of two steel bars (1) to be welded, and a clamping structure (3) arranged at the bent section (102) of the two steel bars (1) to be welded, the clamping structure (3) comprising a guide rail (301) mounted on the ground, and a slider (302) mounted on the guide rail (301), a seat plate (303) being mounted on the slider (302), a mounting shaft (304) whose axis is perpendicular to the plate surface direction of the seat plate (303) being fixed in the middle of the seat plate (303), and a clamp (4) for mounting and clamping the bent section (102) of the two steel bars (1) to be welded being rotatably mounted on the mounting shaft (304).

2. The clamping device for steel bar lap welding according to claim 1, characterized in that: The clamp (4) comprises a bottom plate (401), and support plates (402) are respectively vertically connected to both sides of the bottom plate (401), and the support plates (402) on both sides are 30 to 60 mm away from the sides of the bottom plate (401). The two ends of the bottom plate (401) are respectively connected to clamping plates (403) that are 50 to 100 mm higher than the top of the support plates (402), and include a first clamping plate (4031) and a second clamping plate (4032). A tightening column (404) is installed on the upper part of the first clamping plate (4031), and the tightening column (404) is arranged in the middle of the height range of the first clamping plate (4031) that is higher than the top of the support plate (402).

3. The clamping device for lap welding of steel bars according to claim 2, characterized in that: The bottom plate (401) is provided with a plurality of bolt holes (4011), and locking studs (4012) are installed in the bolt holes (4011) at any two diagonal sides, so that the locking studs (4012) fix the bottom plate (401) to the seat plate (303) through the bolt holes (4011).

4. The clamping device for lap welding of steel bars according to claim 2, characterized in that: The end of the tightening column (404) is connected to a square steel plate (405), and the axis of the tightening column (404) is perpendicular to the square steel plate (405).

5. The clamping device for lap welding of steel bars according to claim 2, characterized in that: The second clamping plate (4032) is arranged on the inner side of the ends of the two side support plates (402), and is hingedly connected to a snap-fit ​​plate (406) on the side of the first clamping plate (4031). The second clamping plate (4032) is provided with a clamping column (407) and a clamping nut (408) for pressing against the snap-fit ​​plate (406). The clamping nut (408) is welded to the side of the second clamping plate (4032), so that after the snap-fit ​​plate (406) clamps the steel bar (1) to be welded, the clamping column (407) fixes the snap-fit ​​plate (406).

6. The clamping device for steel bar lap welding according to any one of claims 1 to 5, characterized in that: The support structure (2) comprises a crossbeam (22) rotatably mounted on a support seat (21), and the crossbeam (22) is provided with a clamping groove (23) for accommodating a main body section (101) of a steel bar (1) to be welded.

7. The clamping device for lap welding of steel bars according to claim 6, characterized in that: The clamping groove (23) comprises a first rolling shaft (231) and a second rolling shaft (232) which are arranged vertically, the second rolling shaft (232) being slidably connected to the crossbeam (22), and a locking nut (233) for fixing the second rolling shaft (232) is provided on the second rolling shaft (232).

8. The clamping device for lap welding of steel bars according to claim 7, characterized in that: The crossbeam (22) comprises a fixed crossbar (221) and a rolling crossbar (222); the fixed crossbar (221) comprises a long strip; ear plate seats (24) are mounted on both ends of the fixed crossbar (221); the rolling crossbar (222) is mounted on the ear plate seats (24); a strip hole (2211) is provided on one side of the fixed crossbar (221) close to the side edge; the strip hole (2211) is used to mount a first rolling shaft (231) and a second rolling shaft (232).

9. The clamping device for lap welding of steel bars according to claim 7, characterized in that: The crossbeam (22) comprises a rolling crossbar (222) and a fixed crossbar (221) arranged side by side, the top of the rolling crossbar (222) being higher than the fixed crossbar (221), both ends of the rolling crossbar (222) being rollingly mounted on the ear plate seat (24), the fixed crossbar (221) being fixedly mounted on the ear plate seat (24), and the first rolling shaft (231) and the second rolling shaft (232) being adjustably mounted on the fixed crossbar (221).

10. The clamping device for steel bar lap welding according to any one of claims 1 to 5, characterized in that: The number of the guide rails (301) is two, the two guide rails (301) are arranged side by side, and the laying direction of the guide rails (301) is perpendicular to the axial direction of the main body section (101) of the steel bar (1) to be welded.

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