A construction steel bar splicing device

Abstract

The present application relates to a construction steel bar splicing device, comprising: a workbench; a first clamping device and a second clamping device; an electromagnetic heating device; and two extrusion transport devices. When overlapping and melting the steel bars, a transport member capable of rotating and lifting is provided. After the overlapping and heating welding of the steel bars, the transport member is rotated. The transport member can drive the steel bars to move along the rotation direction of the transport member and float up and down by relying on the rotation and the friction between the transport member and the steel bars. When the steel bar welding point moves to the first clamping device and the second clamping device, the steel bars can be initially extruded and formed. When the steel bar welding point moves to the extrusion fitting part, the transport member rises and drives the steel bars to rise until the transport member and the extrusion fitting part contact each other, so that the transport member and the extrusion fitting part are closed and the steel bar welding point is subjected to secondary extrusion forming, thereby reducing or even avoiding the generation of slag.

Description

Technical Field

[0001] The present application relates to the technical field of steel bar welding, and in particular to a construction steel bar splicing device. Background Art

[0002] Rebar extension usually refers to the situation during the construction process where the length of the rebar is not enough to meet the requirements of the structural components, and two or more rebars need to be connected to meet the length requirements.

[0003] There are three main ways to weld and connect steel bars: overlap, mechanical connection and welding. Workers can heat and melt the overlapped steel bars, and cool and solidify them so that the two overlapped steel bars can be cooled and connected and fixed, while ensuring the structural strength of the connection.

[0004] Weld slag is the molten substance produced when the welding rod or flux comes into contact with the base material during welding. Since it is less dense than the molten base material, it usually floats on the surface of the molten pool. After welding is completed, an additional process is required to clean the weld slag. When cleaning the weld slag, it may damage the steel bar itself and affect the efficiency of the entire steel bar welding. Therefore, there is an urgent need for a steel bar welding device that can avoid the generation of weld slag and can quickly overlap and connect two steel bars. Summary of the invention

[0005] The present application provides a construction steel bar splicing device, which can solve the problem that welding slag is generated during the welding of existing steel bars, affecting the subsequent work and thus reducing efficiency.

[0006] The technical solution of this application is as follows:

[0007] A construction steel bar splicing device is used to butt and splice two sections of steel bars, comprising:

[0008] Workbench;

[0009] A first clamping device and a second clamping device, wherein the first clamping device and the second clamping device are spaced apart along the length direction of the workbench, and the first clamping device and the second clamping device are both fixedly mounted on the workbench, and are used to clamp the steel bars at both ends stably, and can also perform preliminary extrusion and extension of two sections of steel bars;

[0010] An electromagnetic heating device, which is disposed between the first clamping device and the second clamping device and is used to perform electromagnetic heating and hot melting on the overlapped steel bars; and

[0011] Two extrusion transport devices, the two extrusion transport devices are respectively arranged on one side away from the first clamping device and the second clamping device; wherein each of the extrusion transport devices comprises:

[0012] A base, fixed on the workbench, and the base is provided with a cavity;

[0013] A transport member disposed in the cavity and capable of selectively rotating or lifting; and

[0014] An extrusion fitting is arranged on the base and located above the transport member. When the transport member rotates, it can drive the steel bars that have been initially extruded and extended to move away from the electromagnetic heating device. When the transport member rises, it can approach the extrusion fitting, so as to jointly clamp, extrude and forge the steel bars that have been initially extruded and extended with the extrusion fitting to achieve the final extension.

[0015] By adopting the above scheme, when the steel bars are overlapped and forged, a transport part that can rotate and rise and fall is provided. After the steel bars are overlapped, heated and welded, the transport part rotates. The transport part can drive the steel bars to move along the rotation direction of the transport part and float up and down by relying on the rotation and the friction between the transport part and the steel bars. When the steel bar welding point moves to the first clamping device and the second clamping device, the steel bars can be initially extruded and formed. When the steel bar welding point moves to the extrusion fitting part, the transport part rises and drives the steel bars to rise until the transport part and the extrusion fitting part contact each other, so that the transport part and the extrusion fitting part are closed and the steel bar welding point is extruded and formed for the second time, thereby reducing or even avoiding the generation of slag.

[0016] In one embodiment of the present application, the first clamping device and the second clamping device both include:

[0017] A support frame, the support frame is fixedly mounted on the workbench;

[0018] A clamping cylinder, the clamping cylinder being fixedly mounted on the upper end of the support frame in a vertical direction; and

[0019] Two clamping blocks are arranged at intervals along the up-down direction, one of the clamping blocks is fixedly assembled on the driving shaft of the clamping cylinder, and the other clamping block is fixedly assembled on the supporting frame, and strip clamping grooves are opened on opposite sides of the two clamping blocks.

[0020] By adopting the above scheme, using the first clamping device and the second clamping device, when the steel bars to be melted and forged are overlapped and hot-melted by electromagnetic heating, the first clamping device and the second clamping device respectively clamp the two sections of steel bars to improve the stability of the steel bars during heating and hot-melting. At the same time, when the steel bars are moved to the two clamping blocks, the strip clamping grooves in the two clamping blocks are closed together, so that the welding points of the steel bars can be initially extruded and formed.

[0021] In one embodiment of the present application, the first clamping device and the second clamping device both include:

[0022] A support frame, the support frame is fixedly mounted on the workbench;

[0023] A clamping cylinder, the clamping cylinder being fixedly mounted on the upper end of the support frame in a vertical direction; and

[0024] Two clamping blocks are arranged at intervals along the up-down direction, one of the clamping blocks is fixedly assembled on the driving shaft of the clamping cylinder, and the other clamping block is fixedly assembled on the supporting frame, and strip clamping grooves are opened on opposite sides of the two clamping blocks.

[0025] In one embodiment of the present application, the electromagnetic heating device comprises:

[0026] A lifting drive member, the lifting drive member is assembled on the workbench;

[0027] A mounting seat, the mounting seat being disposed on the driving shaft of the lifting drive member; and

[0028] An electromagnetic heating coil is located between the first clamping device and the second clamping device and is connected to the mounting seat.

[0029] By adopting the above scheme, when the overlapped steel bars are heated and melted, the heating and melting are performed through the electromagnetic heating coil, thereby avoiding the smoke pollution caused by conventional welding, and the heating and melting efficiency is higher.

[0030] In one embodiment of the present application, the transport member includes:

[0031] A lifting cylinder, wherein the lifting cylinder is fixedly assembled in the cavity along a vertical direction;

[0032] A mounting frame, the bottom of which is connected and fixed to the driving shaft of the lifting cylinder;

[0033] A flip rectangular block, wherein four sides of the flip rectangular block are provided with first strip extrusion grooves, the cross section of the first strip extrusion groove is semicircular, and a rotating rod is rotatably mounted on the mounting frame, the rotating rod passes through both ends of the flip rectangular block, and is connected and fixed to the flip rectangular block; and

[0034] A driving motor is fixedly mounted on the mounting frame, and a driving shaft of the driving motor is connected and fixed to the flip rectangular block.

[0035] In one embodiment of the present application, the extrusion fitting comprises:

[0036] A stand, the stand being fixedly mounted on the base;

[0037] A fixed rectangular block, the fixed rectangular block is fixedly mounted on the stand; and

[0038] An elastic rotating rod is assembled on the fixed rectangular block and driven to rotate by a driving member. A second strip extrusion groove is arranged on one side of the fixed rectangular block close to the flip rectangular block, and the cross section of the second strip extrusion groove is semicircular.

[0039] By adopting the above scheme, when it is necessary to drive the steel bars to move, the driving motor can drive the flipping rectangular block to move along the rotation direction of the flipping rectangular block. When it is necessary to pressurize and melt-forge the overlapped steel bars, the driving motor drives the flipping rectangular block to flip until the steel bars are inside the first strip extrusion groove, and then the lifting cylinder drives the first strip extrusion groove to approach the second strip extrusion groove and close the two, so that the two overlapped steel bars can be extruded and forged into a whole, avoiding the generation of welding slag and improving the moving and transportation efficiency of the steel bars when extending them.

[0040] In one embodiment of the present application, an overlapping area is provided at the lower end of the elastic rotating rod, and the overlapping area is the overlapping portion between the elastic rotating rod and the second strip extrusion groove.

[0041] By adopting the above scheme, after the steel bar is squeezed by the squeezing and transporting device, the squeezing and transporting device slightly loosens the steel bar so that the overlapping area below the elastic rotating rod will not lose contact with the surface of the steel bar. At this time, the driving member can drive the elastic rotating rod to rotate, thereby utilizing the friction between the elastic rotating rod and the steel bar to drive the steel bar to rotate to adjust the angle. After adjusting the angle, the squeezing and transporting device is reused to perform pressurization and correction on the steel bar in another direction.

[0042] In one embodiment of the present application, the driving member is a servo motor, which is arranged on a side of the fixed rectangular block away from the elastic rotating rod. The driving shaft of the servo motor passes through the fixed rectangular block and is coaxially connected and fixed to the elastic rotating rod.

[0043] In one embodiment of the present application, the elastic rotating rod is a three-dimensional graphene component.

[0044] By adopting the above scheme, a high temperature resistant and elastic three-dimensional graphene component is used as an elastic rotating rod, so that when it rotates, it can drive the steel bar itself to rotate without causing damage to itself due to high temperature.

[0045] In one embodiment of the present application, both end faces of the flip rectangular block and the fixed rectangular block are squares with equal areas.

[0046] By adopting the above scheme, when the flipping rectangular block rotates and drives the steel bars to move, the moving speed of the steel bars is more uniform because the length of each side of the flipping rectangular block is equal. At the same time, the cross-section of the fixed rectangular block is also set to a square with the same cross-sectional area as the flipping rectangular block, so that it can match the flipping rectangular block.

[0047] In one embodiment of the present application, the height difference between the lowest point and the highest point driven by the rotation of the flip rectangular block is the rising height h, and the difference between the radius of the electromagnetic heating coil and the radius of the steel bar is the floating distance d, satisfying: d≥h.

[0048] By adopting the above scheme, when the steel bars are moved by the flipping rectangular block, the steel bars continuously float up and down and move on the flipping rectangular block. Since the electromagnetic heating coil can be customized according to the diameter of the steel bars, the steel bars will not interfere with the electromagnetic heating coil when moving, thereby improving the safety and stability of the device during use.

[0049] In summary, the present application includes at least one of the following beneficial technical effects:

[0050] 1. By setting up an extrusion transport device, the device can realize automatic transportation of the steel bars after preliminary extension, and at the same time, the transportation parts can be controlled to rise, so that the overlapped steel bars can be further extruded and forged under the joint clamping action of the extrusion transport parts and the extrusion matching parts to finally achieve the extension of the steel bars, thereby avoiding the generation of slag. At the same time, the use scenarios of this device are diverse. It can be used not only in factories but also on construction sites, so that the device can cope with different working environments. When used on construction sites, the steel bars can be temporarily extended to meet the work needs on site.

[0051] 2. By setting the first strip extrusion groove and the second strip extrusion groove, during the process of extrusion and forging of the steel bars, the first strip extrusion groove and the second strip extrusion groove can enclose to form an extrusion cavity that matches the diameter shape of the steel bars, so that the steel bars that have been initially extended and overlapped can be extruded and forged together, and at the same time, the first clamping device and the second clamping device are used to perform the initial extrusion molding of the steel bars to improve the stability of the overlap forging of the steel bars. At the same time, when the steel bars need to be transported, the first strip extrusion groove is set inside the first strip extrusion groove, so that the steel bars can be limited to a certain extent to prevent the steel bars from detaching during movement.

[0052] 3. By setting up an extrusion transport device and an elastic rotating rod, the elastic rotating rod arranged on the side of each extrusion transport device is used to come into contact with the steel bar and drive the steel bar to rotate. After the steel bar is extruded and forged by the extrusion transport device, the elastic rotating rod can drive the steel bar to adjust the angle, and the steel bar can be re-pressurized and corrected in different directions in the extrusion transport device, thereby improving the stability of the steel bar connection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a front view of a construction steel bar splicing device provided in an embodiment of the present application;

[0054] Figure 2 It is a front view of an extrusion and transportation device of a construction steel bar splicing equipment provided in an embodiment of the present application;

[0055] Figure 3 It is a front view of a first clamping device of a construction steel bar splicing device provided in an embodiment of the present application;

[0056] Figure 4 It is a plan view of a first strip extrusion groove of a construction steel bar splicing device provided in an embodiment of the present application;

[0057] Figure 5 It is a schematic plan view of the overlapping area of ​​a construction steel bar splicing device provided in an embodiment of the present application;

[0058] Figure 6 It is a schematic diagram of the rising height h of a construction steel bar splicing device provided in an embodiment of the present application;

[0059] Figure 7 It is a schematic diagram of a floating distance d of a construction steel bar splicing device provided in an embodiment of the present application;

[0060] Figure 8 It is a schematic diagram of the initial overlap of steel bars of a construction steel bar splicing device provided in an embodiment of the present application.

[0061] Explanation of the accompanying drawings: 1. Workbench; 2. First clamping device; 21. Support frame; 22. Clamping cylinder; 23. Clamping block; 231. Strip clamping groove; 3. Second clamping device; 4. Electromagnetic heating device; 41. Electromagnetic heating coil; 42. Mounting seat; 43. Lifting drive member; 5. Extrusion and transportation device; 51. Base; 511. Cavity; 52. Transport member; 521. Lifting cylinder; 522. Mounting frame; 5221. Rotating rod; 523. Flipping rectangular block; 5231. First strip extrusion groove; 524. Driving motor; 53. Extrusion fitting; 531. Stand; 532. Fixed rectangular block; 5321. Second strip extrusion groove; 533. Elastic rotating rod; 5331. Overlapping area; 534. Driving member; 6. Rebar. DETAILED DESCRIPTION

[0062] The following is combined with Figure 1-8 The construction steel bar splicing equipment provided in this application is further described in detail.

[0063] As attached Figure 1 and Figure 2 As shown, a construction steel bar splicing device provided in an embodiment of the present application is used for butt-joining two sections of steel bars 6, comprising: a workbench 1, a first clamping device 2, a second clamping device 3, an electromagnetic heating device 4 and two extrusion and transportation devices 5, wherein the first clamping device 2 and the second clamping device 3 are spaced apart along the length direction of the workbench 1, the first clamping device 2 and the second clamping device 3 are both fixedly mounted on the workbench 1, and are used to clamp the steel bars at both ends stably, and can also perform preliminary extrusion and splicing of the two sections of steel bars, the electromagnetic heating device 4 is arranged between the first clamping device 2 and the second clamping device 3, and is used to perform electromagnetic heating and hot melting of the overlapped steel bars, and the two extrusion and transportation devices 5 are respectively arranged On the side where the first clamping device 2 and the second clamping device 3 are away from each other; wherein each of the extrusion and transportation devices 5 includes a base 51, which is fixed on the workbench 1, and the base 51 is provided with a cavity 511, a transportation member 52, which is arranged in the cavity 511 and can selectively rotate or move up and down, and an extrusion fitting member 53, which is arranged on the base 51 and located above the transportation member 52. When the transportation member 52 rotates, it can drive the steel bars after the initial extrusion and extension to move away from the electromagnetic heating device 4. When the transportation member 52 rises, it can approach the extrusion fitting member 53, so as to clamp, extrude and forge the initially extruded and extended steel bars together with the extrusion fitting member 53 to achieve the final extension.

[0064] Among them, the construction steel bar splicing equipment provided in the present application also includes an electric control cabinet (not shown in the figure) and a hydraulic station (not shown in the figure). The electric control cabinet is electrically connected to the first clamping device 2, the second clamping device 3, the electromagnetic heating device 4 and the extrusion and transportation device 5. At the same time, a controller (not shown in the figure) electrically connected to the electric control cabinet is provided to control the power operation of the first clamping device 2, the second clamping device 3, the electromagnetic heating device 4 and the extrusion and transportation device 5. Among them, the setting method of the controller and the electrical connection method of the electric control cabinet are existing conventional technical means, so they will not be repeated here.

[0065] The hydraulic station is used to provide hydraulic power for the first clamping device 2, the second clamping device 3 and the extrusion and transportation device 5. The specific connection method is also an existing conventional technical means, so it will not be described here.

[0066] In this example, see Figure 8 Before overlapping, the joints of the steel bars 6 to be overlapped need to be ground to remove impurities and oxides on the surface, so that when the steel bars 6 are heated, melted, extruded and forged, they can be better combined together, thereby improving the stability of the steel bars 6 when they are connected to each other.

[0067] When it is necessary to use an extension device to connect and extend the overlapping steel bars 6, the first clamping device 2 and the second clamping device 3 are used to clamp the steel bars when they are heated and melted to ensure their stability. At the same time, the first clamping device 2 or the second clamping device 3 close to the side of the steel bar travel route can perform preliminary extrusion molding on the steel bar welding points. In addition, the extrusion and transportation device 5 can drive the steel bars to move. After the steel bars are initially extruded and formed, the extrusion and transportation device 5 can perform secondary extrusion and correction on the steel bars to ensure the stability of the steel bars when they are overlapped and extended.

[0068] As attached Figure 3 As shown, the first clamping device 2 and the second clamping device 3 both include: a support frame 21, a clamping cylinder 22 and two clamping blocks 23, the support frame 21 is fixedly assembled on the workbench 1, the clamping cylinder 22 is fixedly assembled on the upper end of the support frame 21 in the vertical direction, and the two clamping blocks 23 are arranged at intervals in the up and down directions, one of the clamping blocks 23 is fixedly assembled on the driving shaft of the clamping cylinder 22, and the other clamping block 23 is fixedly assembled on the support frame 21, and a strip clamping groove 231 is opened on the opposite side of the two clamping blocks 23.

[0069] When it is necessary to perform electromagnetic heating and hot melting on the steel bar 6, the steel bar 6 needs to be clamped and stabilized first, by placing two steel bars 6 to be overlapped in the strip clamping groove 231, and using the clamping cylinder 22 to drive the two clamping blocks 23 to approach each other, and clamp the steel bar 6 inside the strip clamping groove 231, so that the steel bar 6 can be more stable during heating and hot melting. In addition, driven by the transport member 52, the welding point of the steel bar 6 moves to the strip clamping groove 231, and by closing the two clamping blocks 23, the steel bar can be preliminarily extruded and formed by closing the strip clamping groove 231.

[0070] In this embodiment, a threaded or grid-shaped anti-slip pattern may be provided on the inner wall of the strip-shaped clamping groove 231 to increase the friction resistance between the clamping block 23 and the steel bar 6 .

[0071] As attached Figure 1 As shown, the electromagnetic heating device 4 includes: a lifting drive member 43, a mounting seat 42 and an electromagnetic heating coil 41, and the lifting drive member 43 is assembled on the workbench 1. The mounting seat 42 is arranged on the driving shaft of the lifting drive member 43. The electromagnetic heating coil 41 is located between the first clamping device 2 and the second clamping device 3, and is connected to the mounting seat 42, wherein the lifting drive member 43 can be an electric push rod.

[0072] When it is necessary to heat the steel bars 6, the ends of two steel bars 6 are overlapped and arranged inside the electromagnetic heating coil 41, and the electromagnetic heating coil 41 is turned on to perform electromagnetic heating on the steel bars 6. Compared with ordinary welding methods, there is less noise pollution and light pollution. At the same time, by setting a lifting drive member 43, when the steel bars 6 are lifted up by the transport member 52, the lifting drive member 43 drives the electromagnetic heating coil 41 to rise together, so that the distance between the steel bars 6 and the inner wall of the electromagnetic heating coil 41 is kept constant before and after the extension, thereby avoiding movement interference between the steel bars 6 and the electromagnetic heating coil 41 when they are raised for extrusion and forging.

[0073] As attached Figure 2 And attached Figure 4 As shown, the transport member 52 includes: a lifting cylinder 521, a mounting frame 522, a flip rectangular block 523 and a driving motor 524. The lifting cylinder 521 is fixedly assembled in the cavity 511 along the vertical direction. The bottom of the mounting frame 522 is connected and fixed to the driving shaft of the lifting cylinder 521. The four sides of the flip rectangular block 523 are provided with a first strip extrusion groove 5231. The cross-section of the first strip extrusion groove 5231 is semicircular. A rotating rod 5221 is rotatably assembled on the mounting frame 522. The rotating rod 5221 passes through both ends of the flip rectangular block 523 and is connected and fixed to the flip rectangular block 523.

[0074] The driving motor 524 is fixedly mounted on the mounting frame 522 , and a driving shaft of the driving motor 524 is connected and fixed to the flip rectangular block 523 .

[0075] When the transport member 52 drives the steel bar 6 to move, the steel bar 6 is set in the first strip extrusion groove 5231 of the flip rectangular block 523, and the driving motor 524 drives the two flip rectangular blocks 523 to rotate synchronously. As the two flip rectangular blocks 523 flip counterclockwise, the steel bar 6 moves along the rotation direction of the flip rectangular block 523 under the action of the static friction resistance between the steel bar 6 and the first strip extrusion groove 5231 to gradually leave the electromagnetic heating coil 41. At the same time, the groove wall of the first strip extrusion groove 5231 can limit the steel bar 6 to prevent it from deflecting during the movement.

[0076] As attached Figure 2 As shown, the extrusion fitting 53 includes: a stand 531, a fixed rectangular block 532 and an elastic rotating rod 533. The stand 531 is fixedly assembled on the base 51, and the fixed rectangular block 532 is fixedly assembled on the stand 531. The elastic rotating rod 533 is assembled on the fixed rectangular block 532 and is located on the side of the fixed rectangular block 532 away from the electromagnetic heating coil 41. The driving member 534 can drive the elastic rotating rod 533 to rotate. A second strip extrusion groove 5321 is provided on one side of the fixed rectangular block 532 close to the flip rectangular block 523, and the cross section of the second strip extrusion groove 5321 is semicircular.

[0077] When the flipping rectangular block 523 rotates around its own central axis, the friction force generated by the flipping rectangular block 523 can drive the steel bar 6 to move, and drive the steel bar 6 to move to the bottom of the fixed rectangular block 532, the flipping rectangular block 523 stops rotating, and under the lifting action of the lifting cylinder 521, the steel bar 6 rises and approaches the fixed rectangular block 532. As the flipping rectangular block 523 and the fixed rectangular block 532 approach each other, the joint of the steel bar 6 after the initial extension will undergo a certain plastic deformation under the mutual squeezing action of the flipping rectangular block 523 and the fixed rectangular block 532, so that the two steel bars 6 are combined more closely together to achieve secondary pressurized extension of the steel bar 6.

[0078] As attached Figure 5 As shown, an overlapping area 5331 is provided at the lower end of the elastic rotating rod 533 , and the overlapping area 5331 is the overlapping portion between the elastic rotating rod 533 and the second strip-shaped extrusion groove 5321 .

[0079] The driving member 534 is a servo motor, which is disposed on a side of the fixed rectangular block 532 away from the elastic rotating rod 533 . The driving shaft of the servo motor passes through the fixed rectangular block 532 and is coaxially connected and fixed to the elastic rotating rod 533 .

[0080] The elastic rotating rod 533 is a three-dimensional graphene component.

[0081] After the butt joint of the steel bar 6 has been extruded and forged, the lifting cylinder 521 drives the steel bar 6 down to a height position where the steel bar 6 no longer fits the inner wall of the second strip extrusion groove 5321, and the steel bar 6 is still in contact with the overlapping area 5331. At this time, the elastic rotating rod 533 can be driven by the servo motor to rotate a certain angle, and under the friction between the elastic rotating rod 533 and the diameter of the steel bar 6, the steel bar 6 is driven to rotate a certain angle. Since the steel bar 6 is rotated by a certain angle, the steel bar 6 can be extruded at another angle, further reinforced and extruded, and the butt joint stability of the steel bar 6 is improved.

[0082] The end faces of both ends of the flip rectangular block 523 and the fixed rectangular block 532 are squares with equal areas. By setting the end faces of the flip rectangular block 523 to be squares, the lengths of the first strip extrusion grooves 5231 arranged on the side of the flip rectangular block 523 are made consistent. Therefore, when the flip rectangular block 523 rotates from a first strip extrusion groove 5231 to another adjacent first strip extrusion groove 5231, the travel of the steel bar 6 to float up and down and to move forward is consistent, so that the steel bar 6 moves more evenly.

[0083] As the instruction manual Figure 6 And the instruction manual Figure 7 As shown, the height difference between the lowest point and the highest point of the steel bar 6 caused by the rotation of the flip rectangular block 523 is the rising height h, and the radius difference between the radius of the electromagnetic heating coil 41 and the steel bar 6 is the floating distance d, satisfying: d≥h.

[0084] By limiting the radius of the electromagnetic heating coil 41, it can be customized according to the diameter of the steel bar 6 itself. At the same time, it is ensured that the diameter of the electromagnetic heating coil 41 is sufficient when floating up and down on the steel bar 6 and walking, and will not collide with the inner wall of the electromagnetic heating coil 41 when floating up and down on the steel bar 6, thereby ensuring the safety of the electromagnetic heating coil 41.

[0085] In summary, when the device needs to overlap and lengthen the steel bars 6, first, the two polished steel bars 6 need to be placed on the first clamping device 2 and the second clamping device 3 respectively and clamped. At this time, the polished ends of the steel bars 6, that is, the ends that need to be overlapped and hot-melted, are overlapped with each other in the electromagnetic heating device 4. The electromagnetic heating device 4 is turned on and heats the steel bars 6 until it is heated to about 1400°. The steel bars 6 become molten due to the high temperature and are melted together. Subsequently, the electromagnetic heating device 4 is turned off. When the heat-melted steel bars 6 cool to 500° to 600°, the transport member 52 rises. , and lift the steel bar 6 after the preliminary hot melting to be separated from the first clamping device 2 and the second clamping device 3. At this time, the steel bar 6 is lifted by the transport member 52, so that the steel bar 6 is driven to be transported by the rotation of the transport member 52 itself. During the transportation process, since the first strip extrusion groove 5231 plays a limiting role on the side of the steel bar 6, when the welding point of the steel bar 6 is transported to the first strip extrusion groove 5231 of the flip rectangular block 523, the lifting cylinder 521 drives the steel bar 6 to rise until the first strip extrusion groove 5231 and the second strip extrusion groove 5321 are closed with each other, so that the steel bar 6 can be subjected to secondary pressure forming;

[0086] After the secondary pressurized melting forging, the lifting cylinder 521 drives the steel bar 6 down to the point where the steel bar 6 no longer contacts the second strip extrusion groove 5321, while maintaining a height position in contact with the overlapping area 5331. At this time, the elastic rotating rod 533 can be driven by the servo motor 524 to rotate a certain angle, and under the friction between the elastic rotating rod 533 and the outer wall of the steel bar 6, the steel bar 6 is driven to rotate a certain angle. At this time, the lifting cylinder 521 drives the steel bar 6 up again, and uses the first strip extrusion groove 5231 and the second strip extrusion groove 5321 to close each other to extrude the steel bar 6. Since the steel bar 6 rotates a certain angle, the steel bar 6 can be repeatedly pressurized and shaped at multiple angles by repeating this process many times, thereby further improving the docking stability of the steel bar 6.

[0087] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A construction steel bar splicing device, used for butting and splicing two sections of steel bars, characterized in that: include: Workbench (1); A first clamping device (2) and a second clamping device (3), wherein the first clamping device (2) and the second clamping device (3) are arranged at intervals along the length direction of the workbench (1), and the first clamping device (2) and the second clamping device (3) are both fixedly mounted on the workbench (1), and are used to clamp the two ends of the steel bars stably, and can also perform preliminary extrusion and extension of two sections of the steel bars; An electromagnetic heating device (4), the electromagnetic heating device (4) being arranged between the first clamping device (2) and the second clamping device (3), and being used for electromagnetically heating and hot-melting the overlapped steel bars; and Two extrusion transport devices (5), the two extrusion transport devices (5) are respectively arranged on one side of the first clamping device (2) and the second clamping device (3) away from each other; wherein each of the extrusion transport devices (5) comprises: A base (51) is fixed on the workbench (1), and the base (51) is provided with a cavity (511); A transport member (52) is disposed in the cavity (511) and is capable of selectively rotating or lifting; and An extrusion fitting (53) is arranged on the base (51) and is located above the transport member (52). When the transport member (52) rotates, it can drive the initially extruded and extended steel bars to move away from the electromagnetic heating device (4). When the transport member (52) rises, it can approach the extrusion fitting (53) to jointly clamp, extrude, and forge the initially extruded and extended steel bars with the extrusion fitting (53) to achieve final extension.

2. A construction steel bar splicing device according to claim 1, characterized in that: The first clamping device (2) and the second clamping device (3) both comprise: A support frame (21), wherein the support frame (21) is fixedly mounted on the workbench (1); A clamping cylinder (22), wherein the clamping cylinder (22) is fixedly mounted on the upper end of the support frame (21) in a vertical direction; and Two clamping blocks (23) are arranged at intervals in the up-down direction, one of the clamping blocks (23) is fixedly mounted on the driving shaft of the clamping cylinder (22), and the other clamping block (23) is fixedly mounted on the support frame (21), and a strip-shaped clamping groove (231) is provided on opposite sides of the two clamping blocks (23).

3. A construction steel bar splicing device according to claim 2, characterized in that: The electromagnetic heating device (4) comprises: A lifting drive member (43), wherein the lifting drive member (43) is mounted on the workbench (1); A mounting seat (42), wherein the mounting seat (42) is disposed on a driving shaft of the lifting driving member (43); and An electromagnetic heating coil (41), wherein the electromagnetic heating coil (41) is located between the first clamping device (2) and the second clamping device (3), and is connected to the mounting seat (42).

4. A construction steel bar splicing device according to claim 3, characterized in that: The transport member (52) comprises: A lifting cylinder (521), wherein the lifting cylinder (521) is fixedly assembled in the cavity (511) along a vertical direction; A mounting frame (522), the bottom of which is connected and fixed to the driving shaft of the lifting cylinder (521); A flip rectangular block (523), wherein four sides of the flip rectangular block (523) are each provided with a first strip extrusion groove (5231), the cross section of the first strip extrusion groove (5231) is semicircular, and a rotating rod (5221) is rotatably mounted on the mounting frame (522), the rotating rod (5221) passes through both ends of the flip rectangular block (523), and is connected and fixed to the flip rectangular block (523); and A driving motor (524), wherein the driving motor (524) is fixedly mounted on the mounting frame (522), and a driving shaft of the driving motor (524) is connected and fixed to the flip rectangular block (523).

5. A construction steel bar splicing device according to claim 4, characterized in that: The extrusion fitting (53) comprises: A stand (531), wherein the stand (531) is fixedly mounted on the base (51); a fixed rectangular block (532), wherein the fixed rectangular block (532) is fixedly mounted on the stand (531); and An elastic rotating rod (533) is mounted on the fixed rectangular block (532) and driven to rotate by a driving member (534). A second strip-shaped extrusion groove (5321) is provided on one side of the fixed rectangular block (532) close to the flip rectangular block (523), and the cross-section of the second strip-shaped extrusion groove (5321) is semicircular.

6. A construction steel bar splicing device according to claim 5, characterized in that: An overlapping area (5331) is provided at the lower end of the elastic rotating rod (533), and the overlapping area (5331) is the overlapping portion between the elastic rotating rod (533) and the second strip-shaped extrusion groove (5321).

7. A construction steel bar splicing device according to claim 5, characterized in that: The driving member (534) is a servo motor, which is arranged on a side of the fixed rectangular block (532) away from the elastic rotating rod (533). The driving shaft of the servo motor passes through the fixed rectangular block (532) and is coaxially connected and fixed to the elastic rotating rod (533).

8. A construction steel bar splicing device according to claim 5, characterized in that: The elastic rotating rod (533) is a three-dimensional graphene component.

9. A construction steel bar splicing device according to claim 5, characterized in that: The end faces of both ends of the flip rectangular block (523) and the fixed rectangular block (532) are squares with equal areas.

10. A construction steel bar splicing device according to claim 5, characterized in that: The height difference between the lowest point and the highest point of the steel bar caused by the rotation of the flip rectangular block (523) is the rising height h, and the difference between the radius of the electromagnetic heating coil (41) and the radius of the steel bar is the floating distance d, satisfying: d≥h.

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