Concrete pipe pile reinforcement cage welding device

Abstract

The invention relates to the technical field of welding processing, in particular to a concrete pipe pile reinforcement cage welding device which comprises a bottom seat frame, a spiral winding welding part arranged on the bottom seat frame, a tightening mechanism installed on the spiral winding welding part, a plurality of main reinforcements fixedly inserted in the upper circumference of the spiral winding welding part and wound with stirrups, and a clamping mechanism installed on the lower circumference of the spiral winding welding part. The supporting and expanding mechanism is located on one side of the bottom seat frame and extends into the main reinforcements, the supporting and expanding mechanism can adapt to the main reinforcements with different sizes, it is ensured that the main reinforcements with different thicknesses can be inserted and fixed, the spatial positions of the main reinforcements can be rapidly adjusted, the time-consuming process of disassembling a large number of positioning pieces is not needed, and the working efficiency is improved. While the positioning effect on the main reinforcement is ensured, it is ensured that the device can be rapidly adapted to welding of reinforcement cages with different diameters and other specifications, and the capacity of the reinforcement cages is effectively improved through flexible switching.

Description

Technical Field

[0001] The present invention relates to the technical field of welding processing, and more specifically, to a welding device for a steel cage of a concrete pipe pile. Background Art

[0002] Concrete Piles are precast pile types widely used in foundation projects such as building engineering, bridge engineering, port terminals, etc., mainly for the reinforcement of soft foundations and load transfer. Its core function is to transfer the load of the upper structure to deep stable soil or rock layers by driving or pressing into the formation. As the core load-bearing structure of concrete piles, the quality of the steel cage directly determines the compressive, flexural and impact resistance of the pipe piles. It can be said that the quality of the steel cage will directly affect the overall performance of the pipe piles. Therefore, the manufacturing process of the steel cage, especially the welding process, becomes a key link to ensure the quality of the pipe piles.

[0003] The steel cage is mainly composed of main reinforcement bars and spiral stirrups. The main reinforcement bars are longitudinal stress-bearing bars evenly distributed along the axial direction of the pipe pile. The spiral stirrups are closed loop bars wound around the main reinforcement bars at a constant pitch and fixed to the main reinforcement bars by spot welding to form a spatial framework, which restricts the cracking of concrete and resists shear forces.

[0004] With the progress of technology, welding machines are increasingly replacing manual welding. However, the existing welding machines adopt a fixed guide groove type positioning mechanism. When dealing with steel cages of different diameters, a large number of positioning parts need to be disassembled to manually replace the guide groove components, which is a very time-consuming process, thus seriously affecting the production capacity of the steel cage. At the same time, when the spacing of the main reinforcement bars changes, etc., the posture of the welding torch needs to be adjusted in a timely manner, otherwise the offset of the welding spots will occur, resulting in a reduction in the effective welding area, and further affecting the strength of the steel cage. However, most of the welding torches are fixedly installed and require a long time of manual adjustment. Moreover, due to the errors of manual operation, it may take multiple adjustments to adjust the posture of the welding torch to a suitable posture. In addition, when the existing welding machine winds the stirrups spirally around the main reinforcement bars, due to factors such as radial deviation, the stirrups are extremely likely to be wound too loosely, resulting in the situation that the concrete cannot be effectively fixed on the steel cage during the pouring process, the concrete layer falls off, and the steel cage is radially out-of-round, directly leading to uneven concrete cover thickness and accelerating carbonization corrosion in local weak areas, etc., which will further affect the quality of the pipe piles. Summary of the Invention

[0005] The purpose of the present invention is to provide a welding device for a steel cage of a concrete pipe pile to solve the above problems.

[0006] To achieve the above object, the present invention provides a welding device for the steel cage of a concrete pipe pile, comprising: a bottom seat frame, a winding welding part arranged on the bottom seat frame, a plurality of main reinforcement bars fixedly inserted through the circumference of the winding welding part and a stirrup bar wound thereon, a tightening mechanism installed on the winding welding part, and a supporting and expanding mechanism located on one side of the bottom seat frame and extending into a plurality of the main reinforcement bars, wherein:

[0007] The winding welding part is adapted to helically wind and weld the stirrup bar on a plurality of the main reinforcement bars at a constant pitch;

[0008] The winding welding part can automatically adjust the pitch of the welding point to adjust the welding point within a certain range;

[0009] Driving the tightening mechanism can locally tighten the stirrup bar in an arc direction, so that the stirrup bar is tightly wound around a plurality of the main reinforcement bars;

[0010] The supporting and expanding mechanism is adapted to support a plurality of the main reinforcement bars in the opposite direction to the winding direction of the stirrup bar, so as to shape the corresponding parts of a plurality of the main reinforcement bars and prevent them from being recessed and retracted.

[0011] Further, the winding welding part includes a wall panel fixedly installed on the bottom seat frame, an annular runner installed on the wall panel, a wire reel and a bending arm installed on the annular runner, the bending arm is located behind the wire reel and the bending arm is closer to the central axis of the annular runner than the wire reel, two side plates installed on the annular runner and located behind the bending arm, a tail shaft rod rotatably installed between the two side plates, a rectangular block fixedly installed in the middle of the tail shaft rod, a first gear installed on the tail shaft rod, a first motor installed on one of the side plates, a second gear installed on the output end of the first motor, and the second gear meshes with the first gear, a spot welding gun connected to the rectangular block, a linear walking wall panel arranged on the bottom seat frame, and circular through grooves coaxially opened on the linear walking wall panel and the wall panel, a circumferential adjusting mechanism arranged on the linear walking wall panel, and a plurality of groups of guiding and positioning parts circumferentially arranged on the circumferential adjusting mechanism;

[0012] The wall panel is located directly in front of the linear walking wall panel;

[0013] The stirrup bar is wound on the wire reel;

[0014] A plurality of the main reinforcement bars are respectively inserted through a plurality of groups of the guiding and positioning parts and linearly pass through the wall panel and the annular runner and extend forward;

[0015] The spot welding gun is attached to the rotation trajectory of a plurality of the main reinforcement bars.

[0016] Further, the guiding and positioning member includes a bent arm plate provided on the circumferential adjusting mechanism, a rectangular through groove opened on the bent arm plate, a two-way side-fold block slidably mounted on the bent arm plate and located within the rectangular through groove, two first bolts respectively screwed on both sides of the two-way side-fold block and screwed into the bent arm plate, a plurality of threaded holes opened on the bent arm plate and collinear with the two first bolts respectively, a rubber ring sleeve centrally penetrating through the two-way side-fold block, a rubber guiding long tube connected to the inside of the rubber ring sleeve, two arc-shaped mouth clamping plates slidably mounted on the two-way side-fold block and respectively located on both sides of the rubber guiding long tube, and two second bolts respectively screwed at both ends on the two arc-shaped mouth clamping plates;

[0017] The entrance of the rubber guiding long tube is in a flared shape;

[0018] A plurality of the main bars respectively penetrate through the rubber guiding long tubes of a plurality of groups of the guiding and positioning members.

[0019] Further, the tightening mechanism includes a concave plate provided on the annular runner, and the concave plate is located between the bending arm and the spot welding gun, a first electric push rod installed at the rear of the concave plate, a hydraulic clamping jaw movably installed within the concave plate and having its tail end connected to the output end of the first electric push rod, and a second electric push rod installed on the annular runner and located above the concave plate, and the output end of the second electric push rod is hinged to the tail of the concave plate;

[0020] The hydraulic clamping jaw faces a plurality of the main bars;

[0021] The middle part of the concave plate is rotatably installed on the annular runner.

[0022] Further, the expanding mechanism includes a bracket on one side of the bottom seat frame, a double-headed open tube fixed to the bracket, and the double-headed open tube extends into a plurality of the main bars, and a plurality of supporting members circumferentially arranged on the double-headed open tube;

[0023] A plurality of the supporting members are flush with the hydraulic clamping jaw and the spot welding gun;

[0024] A plurality of the supporting members are respectively in contact with a plurality of the main bars.

[0025] Further, the expanding mechanism further includes an inner rod partially screwed within the double-headed open tube, and the inner rod protrudes from the end of the double-headed open tube, a plurality of outer sleeves circumferentially penetrating and installed on the circumferential side of the double-headed open tube, a plurality of key grooves circumferentially opened on the inner rod, a plurality of arc plates respectively slidably arranged within the plurality of key grooves, and a plurality of push-pull plates respectively hinged at one ends on the plurality of arc plates;

[0026] A plurality of the supporting members are respectively slidably inserted into a plurality of the outer sleeves and extend into the double-headed open pipe;

[0027] One ends of a plurality of the supporting members extending into the double-headed open pipe are respectively hinged to the other ends of a plurality of the push-pull plates.

[0028] Further, the supporting member includes a main rod body slidably inserted into the outer sleeve, and a roller installed at an end of the main rod body and located outside the double-headed open pipe.

[0029] Further, the circumferential adjustment mechanism includes a circular ring and an annular electromagnetic chuck which are spacedly installed in the linear walking wall plate;

[0030] A circular groove is formed in the circular ring, and the bent arm plate is slidably connected to the circular ring through the circular groove;

[0031] The annular electromagnetic chuck is attached to the bent arm plate.

[0032] Further, arc-shaped gaskets are provided on both clamping jaws of the hydraulic clamping jaw;

[0033] Mesh-shaped convex lines are engraved on both of the arc-shaped gaskets;

[0034] The bottom seat frame is formed by splicing a plurality of single-seat frames.

[0035] Further, arc-shaped grooves are formed on one side of two side plates facing each other;

[0036] Supporting plates are respectively connected to both sides of the spot welding gun;

[0037] The other ends of the two supporting plates are movably arranged in the arc-shaped grooves.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The concrete pipe pile steel cage welding device can helically wind and weld stirrups on a plurality of main bars at a constant pitch through the winding welding part, ensuring the smooth completion of normal welding work to obtain a finished steel cage. In addition, the welding angle of the winding welding part can be automatically and greatly adjusted, so as to ensure meeting different welding conditions, preventing the welding points from shifting and reducing the effective welding area, while greatly improving the speed and accuracy of adjusting the welding angle;

[0040] 2. The winding welding part of the steel bar cage welding device for concrete pipe piles can adapt to main steel bars of different sizes, ensuring that main steel bars of different thicknesses can be inserted and fixed. Moreover, it can quickly adjust the spatial position of the main steel bars without the time-consuming process of disassembling a large number of positioning parts. While ensuring the positioning effect of the main steel bars, it can quickly adapt to welding steel bar cages of different specifications such as different diameters, and effectively improve the production capacity of the steel bar cage through flexible switching.

[0041] 3. When the concrete pipe pile steel bar cage welding device performs welding work through the tightening mechanism at the winding welding part, after the stirrup is wound around the main steel bar at the winding welding part, it can immediately clamp the stirrup and pull it towards the main steel bar direction, thereby further promoting the stirrup to tighten towards the main steel bar, effectively improving the winding tightness of the stirrup, ensuring the overall tightness of the fabricated steel bar cage, avoiding the situation of too loose winding of the stirrup, and preventing negative impacts such as concrete layer material dropping or uneven thickness of the concrete protective layer during the subsequent pouring process.

[0042] 4. The concrete pipe pile steel bar cage welding device can always slightly expand and resist the position where the stirrup is wound on each main steel bar from the opposite direction during the process of winding the stirrup through the expanding and supporting mechanism, thereby always maintaining the firmness of the position of each main steel bar when the stirrup is wound, effectively preventing the main steel bar from shaking, bending and denting under the action of external force or the winding force of the stirrup, preventing the separation of the main steel bar and the stirrup, and further ensuring the winding tightness of the stirrup and the main steel bar.

[0043] 5. The concrete pipe pile steel bar cage welding device has taken targeted solutions in terms of production efficiency and quality, comprehensively improving the production capacity of the steel bar cage and the overall production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The present invention will be further described below in conjunction with the drawings and embodiments.

[0045] Figure 1 The perspective view of the present invention is shown;

[0046] Figure 2 The second perspective view of the present invention is shown;

[0047] Figure 3 The third perspective view of the present invention is shown;

[0048] Figure 4 The fourth perspective view of the present invention is shown;

[0049] Figure 5 The fifth perspective view of the present invention is shown;

[0050] Figure 6 The sixth perspective view of the present invention is shown;

[0051] Figure 7 Shows the seventh three-dimensional view of the present invention;

[0052] Figure 8 Shows the eighth three-dimensional view of the present invention;

[0053] Figure 9 Shows the ninth three-dimensional view of the present invention;

[0054] Figure 10 Shows the tenth three-dimensional view of the present invention;

[0055] Figure 11 Shows the partial front view of the present invention;

[0056] Figure 12 Shows the present invention Figure 1 Enlarged view of part A;

[0057] Figure 13 Shows the present invention Figure 2 Enlarged view of part B;

[0058] Figure 14 Shows the present invention Figure 3 Enlarged view of part C;

[0059] Figure 15 Shows the present invention Figure 4 Enlarged view of part D;

[0060] Figure 16 Shows the present invention Figure 5 Enlarged view of part E;

[0061] Figure 17 Shows the present invention Figure 6 Enlarged view of part F;

[0062] Figure 18 Shows the present invention Figure 7 Enlarged view of part G;

[0063] Figure 19 Shows the present invention Figure 8 Enlarged view of part H;

[0064] Figure 20 Shows the present invention Figure 9 Enlarged view of part I;

[0065] Figure 21 Shows the present invention Figure 9 Enlarged view of part J;

[0066] Figure 22 Shows the present invention Figure 11 Enlarged view of part L.

[0067] In the figure, the same reference numerals denote the same structural elements, where:

[0068] 1. Bottom seat frame; 2. Winding welding part; 21. Wall panel; 22. Ring-shaped runner; 23. Wire reel; 24. Bent arm; 25. Side plate; 26. Tail shaft rod; 27. Rectangular block; 28. First gear; 29. First motor; 291. Second gear; 292. Spot welding gun; 3. Main reinforcement; 4. Stirrup; 5. Tightening mechanism; 51. Concave plate; 52. First electric push rod; 53. Hydraulic gripper; 54. Second electric push rod; 6. Expanding mechanism; 61. Bracket; 62. Double-headed open pipe; 63. Supporting part; 631. Main rod body; 632. Roller; 64. Inner rod; 65. Outer sleeve; 66. Keyway; 67. Arc plate; 68. Push-pull plate; 7. Linear walking wall panel; 8. Circumferential adjustment mechanism; 81. Ring; 82. Ring-shaped electromagnetic chuck; 9. Guiding and positioning part; 91. Bent arm plate; 92. Rectangular through groove; 93. Double-sided folding block; 94. First bolt; 95. Threaded hole; 96. Rubber ring sleeve; 97. Rubber guiding long tube; 98. Arc-shaped clamping plate for mouth; 99. Second bolt; 10. Arc-shaped gasket; 11. Arc-shaped groove; 12. Support plate. Detailed implementation mode

[0069] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0070] As Figure 1 - 22 shown, a welding device for a concrete pipe pile steel reinforcement cage includes: a bottom seat frame 1, a winding welding part 2 arranged on the bottom seat frame 1, a plurality of main reinforcements 3 fixedly inserted through the circumference of the winding welding part 2 and a stirrup 4 wound thereon, a tightening mechanism 5 installed on the winding welding part 2, and an expanding mechanism 6 located on one side of the bottom seat frame 1 and extending into a plurality of the main reinforcements 3, wherein:

[0071] The winding welding part 2 is adapted to helically wind and weld the stirrup 4 on a plurality of the main reinforcements 3 at a constant pitch;

[0072] The winding welding part 2 can automatically adjust the pitch of the welding point to adjust the welding point within a certain range;

[0073] Driving the tightening mechanism 5 can locally tighten the stirrup 4 in an arc direction to make the stirrup 4 tightly wound around a plurality of the main reinforcements 3;

[0074] The expanding mechanism 6 is adapted to brace a plurality of the main reinforcements 3 in a direction opposite to the winding direction of the stirrups 4, so as to shape corresponding parts of the plurality of the main reinforcements 3 and prevent them from sagging backward. The steel bar cage welding device for a concrete pipe pile can wind and weld the stirrups 4 on the plurality of main reinforcements 3 in a constant pitch spiral through the winding welding part 2, ensuring the smooth completion of normal welding work to obtain a finished steel bar cage. In addition, the welding angle of the winding welding part 2 can be automatically and greatly adjusted, so as to ensure meeting different welding conditions, preventing the offset of welding points and reducing the effective welding area, while greatly improving the speed and accuracy of adjusting the welding angle. The winding welding part 2 can adapt to main reinforcements 3 of different sizes, ensuring that main reinforcements 3 of different thicknesses can be inserted and fixed, and can quickly adjust the spatial position of the main reinforcements 3 without the time-consuming process of disassembling a large number of positioning parts. While ensuring the positioning effect of the main reinforcements 3, it can quickly adapt to welding steel bar cages of different specifications such as different diameters, and effectively improve the production capacity of the steel bar cage through flexible switching. When the winding welding part 2 is performing welding work, the tightening mechanism 5 can clamp the stirrups 4 and pull them tightly towards the main reinforcements 3 after the winding welding part 2 winds the stirrups 4 onto the main reinforcements 3, thereby further prompting the stirrups 4 to tighten towards the main reinforcements 3, effectively improving the winding tightness of the stirrups 4, ensuring the overall tightness of the produced steel bar cage, and avoiding the situation of too loose winding of the stirrups 4, so as to prevent the situation of concrete layer material dropping or negative impacts such as uneven thickness of the concrete protective layer in the subsequent pouring process. The expanding mechanism 6 can slightly expand and brace the positions of each main reinforcement 3 where the stirrups 4 are wound from the opposite direction during the process of winding the stirrups 4, thereby always maintaining the firmness of the position of each main reinforcement 3 when the stirrups 4 are wound, effectively preventing the main reinforcements 3 from shaking, bending and sagging under the action of external forces or the winding force of the stirrups 4, and preventing the separation of the main reinforcements 3 from the stirrups 4, and further ensuring the winding tightness of the stirrups 4 and the main reinforcements 3. The steel bar cage welding device for a concrete pipe pile adopts targeted solutions in terms of production efficiency and quality, comprehensively improving the production capacity of the steel bar cage and the overall production quality.

[0075] Optionally, the winding and welding part 2 includes a wall panel 21 fixedly installed on the bottom seat frame 1, an annular runner 22 installed on the wall panel 21, a wire reel 23 and a bending arm 24 installed on the annular runner 22. The bending arm 24 is located behind the wire reel 23 and the bending arm 24 is closer to the central axis of the annular runner 22 than the wire reel 23. Two side plates 25 installed on the annular runner 22 and located behind the bending arm 24, a tail shaft rod 26 rotatably installed between the two side plates 25, a rectangular block 27 fixedly installed in the middle of the tail shaft rod 26, a first gear 28 installed on the tail shaft rod 26, a first motor 29 installed on one of the side plates 25, a second gear 291 installed on the output end of the first motor 29, and the second gear 291 meshes with the first gear 28, a spot welding gun 292 connected to the rectangular block 27, a linear walking wall panel 7 arranged on the bottom seat frame 1, and circular through grooves are coaxially formed on the linear walking wall panel 7 and the wall panel 21, a circumferential adjustment mechanism 8 arranged on the linear walking wall panel 7, and several groups of guiding and positioning parts 9 arranged circumferentially on the circumferential adjustment mechanism 8. The annular runner 22 uses a direct drive of a motor or a motor-gear drive or other methods as the driving force and can rotate;

[0076] The wall panel 21 is located directly in front of the linear walking wall panel 7. Specifically, under the action of the driving force, the linear walking wall panel 7 can walk back and forth along the bottom seat frame 1. As shown in Figure 3, existing transmission methods such as motors and gears can be used to realize the back-and-forth walking of the linear walking wall panel 7, so it will not be elaborated here; Figure Three and Figure Ten Figure 3, so it will not be elaborated here;

[0077] The stirrup 4 is wound on the wire reel 23;

[0078] Several main bars 3 are respectively inserted through several groups of the guiding and positioning parts 9 and linearly pass through the wall panel 21 and the annular runner 22 and extend forward;

[0079] The spot welding gun 292 is in contact with the rotation trajectories of several main reinforcement bars 3, that is, the spot welding gun 292 can reach the contact points of several main reinforcement bars 3 and stirrups 4, so as to weld the two together. There is a round tube at the end of the bending arm 24 for the stirrup 4 to pass through. When fabricating the steel reinforcement cage, after all the main reinforcement bars 3 are placed and fixed, first pull out the end of the stirrup 4 wound on the wire reel 23, pass it through the round tube at the end of the bending arm 24 and pull it to one main reinforcement bar 3, and then manually weld the end of the stirrup 4 to this main reinforcement bar 3 to complete the preparation work before automatic welding. Subsequently, start the ring-shaped runner 22 and the linear walking wall panel 7 synchronously. The linear walking wall panel 7 starts to move backward at a constant speed, and the ring-shaped runner 22 starts to rotate at a constant speed. As the ring-shaped runner 22 rotates, the wire reel 23 continuously rotates around several main reinforcement bars 3. Therefore, the stirrup 4 wound on the wire reel 23 starts to unwind continuously and wind around several main reinforcement bars 3. The bending arm 24 statically bends the stirrup 4 between the wire reel 23 and the main reinforcement bars 3 to make the stirrup 4 wind better around several main reinforcement bars 3. At the same time, the linear walking wall panel 7 carries several main reinforcement bars 3 and moves backward together, so that the stirrup 4 is helically wound around several main reinforcement bars 3 with a constant pitch. During the process of winding the stirrup 4, start the spot welding gun 292 in a timely manner to ensure that the stirrup 4 and the main reinforcement bars 3 are welded together in time, so as to ensure the smooth completion of the normal welding work to obtain the finished steel reinforcement cage; drive the first motor 29 to directly drive the second gear 291 to rotate, and under the meshing transmission, make the first gear 28 rotate synchronously, so as to drive the tail shaft rod 26 to rotate, and then swing the front spot welding gun 292 up and down within the movable range, realizing automatic and large-scale adjustment of the welding angle. Ensure that when there is a need to adjust the welding angle such as a change in the spacing of the main reinforcement bars 3, the attitude of the spot welding gun 292 can be quickly adjusted to meet the welding requirements, and under the precise control of the first motor 29 as the adjustment driving force, the spot welding gun 292 is adjusted to the appropriate attitude at one time, so as to ensure meeting different welding requirements, prevent the effective welding area from being reduced due to the offset of the welding points, and effectively improve the speed and accuracy of adjusting the attitude of the spot welding gun 292.

[0080] Optionally, the guiding and positioning member 9 includes a bent arm plate 91 provided on the circumferential adjusting mechanism 8, a rectangular through groove 92 opened on the bent arm plate 91, a double-sided side folding plate 93 slidably mounted on the bent arm plate 91 and located within the rectangular through groove 92, two first bolts 94 respectively screwed on both sides of the double-sided side folding plate 93 and screwed into the bent arm plate 91, a plurality of threaded holes 95 opened on the bent arm plate 91 and collinear with the two first bolts 94 respectively, a rubber ring sleeve 96 centrally penetrating through the double-sided side folding plate 93, a rubber guiding long cylinder 97 connected inside the rubber ring sleeve 96, two arc-shaped mouth clamping plates 98 slidably mounted on the double-sided side folding plate 93 and located on both sides of the rubber guiding long cylinder 97 respectively, and two second bolts 99 respectively screwed at both ends on the two arc-shaped mouth clamping plates 98;

[0081] The entrance of the rubber guiding long cylinder 97 is in a flared shape;

[0082] A plurality of the main reinforcement bars 3 respectively pass through the rubber guiding long cylinders 97 of a plurality of groups of the guiding and positioning members 9. Insert the main reinforcement bar 3 into the rubber guiding long cylinder 97 and continuously push it forward until the main reinforcement bar 3 is pushed in place. Then tighten the two second bolts 99 to make the two arc-shaped mouth clamping plates 98 gradually close until the rubber guiding long cylinder 97 is clamped in the middle, clamping the rubber guiding long cylinder 97 and the main reinforcement bar 3 inside it, thereby completing the fixation of the main reinforcement bar 3, and sequentially completing the fixation of all the main reinforcement bars 3 to ensure the smooth progress of the normal welding work; both the rubber guiding long cylinder 97 and the rubber ring sleeve 96 are elastic. Therefore, when the diameter of the main reinforcement bar 3 becomes larger, during the process of inserting the main reinforcement bar 3, the main reinforcement bar 3 can squeeze through the rubber guiding long cylinder 97 and the rubber ring sleeve 96, so as to adapt to main reinforcement bars 3 of different sizes and improve the adaptability of the guiding and positioning member 9; after loosening the two first bolts 94, the double-sided side folding plate 93 can be pulled along the rectangular through groove 92, thereby changing the positions of the rubber guiding long cylinder 97, the rubber ring sleeve 96, etc., and then changing the spacing between all the passed main reinforcement bars 3, so as to be able to place and fix a steel reinforcement cage of different diameters, abandoning the traditional fixed guide groove type positioning mechanism and the time-consuming process of disassembling a large number of positioning members, further improving the adaptability of the guiding and positioning member 9, and effectively improving the production capacity of the steel reinforcement cage with flexible and rapid adjustment and switching.

[0083] Optionally, the tightening mechanism 5 includes a concave plate 51 provided on the annular runner 22, and the concave plate 51 is located between the bending arm 24 and the spot welding gun 292. A first electric push rod 52 is installed at the rear of the concave plate 51. A hydraulic jaw 53 is movably installed in the concave plate 51 and the tail end thereof is connected to the output end of the first electric push rod 52. A second electric push rod 54 is installed on the annular runner 22 and above the concave plate 51, and the output end of the second electric push rod 54 is hinged to the tail of the concave plate 51;

[0084] The hydraulic jaw 53 faces several main reinforcement bars 3;

[0085] The middle part of the concave plate 51 is rotatably installed on the annular runner 22. During the welding process, after the winding welding part 2 winds the stirrup 4 around several main reinforcement bars 3, randomly drive the first electric push rod 52 to push the hydraulic jaw 53 forward, so that the two jaws of the hydraulic jaw 53 move to the stirrup 4. Then drive the hydraulic jaw 53 to firmly clamp the stirrup 4, and continuously drive the first electric push rod 52 to push the hydraulic jaw 53 forward a small distance, so as to carry the stirrup 4 forward and tighten the stirrup 4 in the direction of the main reinforcement bar 3. Furthermore, under continuous winding, the stirrup 4 is made to wind more tightly around the main reinforcement bar 3. Subsequently, the spot welding gun 292 performs welding to ensure the overall compactness of the fabricated steel reinforcement cage, avoid the situation that the stirrup 4 is wound too loosely, prevent the situation of concrete layer material dropping during subsequent pouring, or cause negative impacts such as uneven thickness of the concrete protective layer, and effectively improve the production quality of the steel reinforcement cage. Since the hydraulic jaw 53 moves forward and extends into several main reinforcement bars 3, before the hydraulic jaw 53 touches the next main reinforcement bar 3, release the stirrup 4 and reverse drive the first electric push rod 52 to pull the hydraulic jaw 53 back to its original position to avoid the hydraulic jaw 53 touching the main reinforcement bar 3 and causing damage and affecting the normal welding process; while the hydraulic jaw 53 clamps the stirrup 4 and tightens the stirrup 4, drive the second electric push rod 54 to retract its output end, pull the tail of the concave plate 51 upward around the rotation installation point with the annular runner 22, so that the front end of the concave plate 51 and the hydraulic jaw 53 turn downward, causing the hydraulic jaw 53 to move forward and twist downward at the same time, thereby twisting the stirrup 4 inward in the direction of the main reinforcement bar 3, better tightening the stirrup 4, and further promoting the stirrup 4 to wind more tightly around the main reinforcement bar 3, avoiding the situation that the stirrup 4 is wound too loosely.

[0086] Optionally, the expanding mechanism 6 includes a bracket 61 located on one side of the bottom seat frame 1, a double-headed open pipe 62 fixed on the bracket 61, and the double-headed open pipe 62 extends into several main reinforcement bars 3, and several supporting members 63 are circumferentially arranged on the double-headed open pipe 62;

[0087] Some of the supporting members 63 are flush with the hydraulic gripper 53 and the spot welding gun 292;

[0088] Some of the supporting members 63 are respectively in contact with several of the main reinforcement bars 3. During the welding process, by using the several supporting members 63, the positions of each main reinforcement bar 3 where the stirrups 4 are wound are always propped up inside the several main reinforcement bars 3, so as to provide support for the several main reinforcement bars 3, ensure that the positions of the several main reinforcement bars 3 where the stirrups 4 are wound always maintain good firmness, effectively prevent the main reinforcement bars 3 from shaking during the welding process or bending and denting under the action of the winding force of the stirrups 4, prevent the main reinforcement bars 3 from separating from the stirrups 4, and further ensure the winding tightness of the stirrups 3 and the main reinforcement bars 4, so as to ensure that the spot welding gun 292 can better weld the stirrups 3 and the main reinforcement bars 4 together.

[0089] Optionally, the expanding mechanism 6 further includes an inner rod 64 locally spirally installed in the double-headed open tube 62, and the inner rod 64 protrudes from the end of the double-headed open tube 62, several outer sleeves 65 circumferentially installed through the side of the double-headed open tube 62, several key grooves 66 circumferentially formed in the inner rod 64, several arc plates 67 respectively slidably disposed in the several key grooves 66, and several push-pull plates 68 with one ends respectively hinged to the several arc plates 67;

[0090] Some of the supporting members 63 are respectively slidably inserted into the several outer sleeves 65 and extend into the double-headed open tube 62;

[0091] One end of several of the supporting members 63 extending into the double-headed open-ended tube 62 is respectively hinged to the other ends of several of the push-pull plates 68. After all the main reinforcement bars 3 are fixed and before welding, the inner rod 64 is rotated to cause several of the push-pull plates 68 to rotate synchronously, so that several of the push-pull plates 68 approach several of the supporting members 63 respectively, causing several of the supporting members 63 to be under pressure. At the same time, due to the hinged effect at both ends, several of the push-pull plates 68 undergo an adaptive angular change as the inner rod 64 rotates, pushing several of the supporting members 63 outwards along several of the outer sleeves 65 respectively until several of the supporting members 63 are respectively abutted against several of the main reinforcement bars 3, and slightly pushing several of the main reinforcement bars 3 outwards without changing the shape of several of the main reinforcement bars 3, further improving the firmness of the positions where several of the main reinforcement bars 3 are wound with stirrups 4, and further preventing the main reinforcement bars 3 from shaking during the welding process or bending and denting under the action of the winding force of the stirrups 4 due to the insufficient abutment of several of the supporting members 63 against the main reinforcement bars 3, more effectively ensuring the winding tightness between the stirrups 4 and the main reinforcement bars 3; in addition, the outer extension length of several of the supporting members 63 can be adjusted, so when the placement diameter of several of the main reinforcement bars 3 changes, several of the supporting members 63 can still abut against them; after the inner rod 64 with a partial helix installed inside the double-headed open-ended tube 62 is rotated forward, relying on the effect of screw connection, several of the supporting members 63 can be fixed in the adjusted position to ensure that they maintain the abutting effect on several of the main reinforcement bars 3. When the inner rod 64 is rotated forward, several of the arc plates 67 respectively slide backward in several of the key grooves 66 accordingly to ensure that there is no situation of mutual obstruction.

[0092] Optionally, the supporting member 63 includes a main rod body 631 slidably inserted into the outer sleeve 65, and a roller 632 installed at the end of the main rod body 631 and located outside the double-headed open-ended tube 62. The rotatable roller 632 is directly in contact with several of the main reinforcement bars 3. While being able to normally abut against several of the main reinforcement bars 3, when the main reinforcement bars 3 move, the corresponding roller 632 will be driven to rotate immediately, thereby effectively reducing the friction between the main reinforcement bars 3 and the supporting member 63, ensuring that the straight walking wall panel 7 smoothly pulls several of the main reinforcement bars 3 backward during the welding process, and preventing jamming during the process of pulling several of the main reinforcement bars 3 backward due to excessive friction, which may affect the normal welding process or cause damage to the supporting member 63.

[0093] Optionally, the circumferential adjustment mechanism 8 includes an annular ring 81 and an annular electromagnetic chuck 82 installed at intervals inside the straight walking wall panel 7;

[0094] A circular groove is formed on the annular ring 81, and the bent arm plate 91 is slidably connected to the annular ring 81 through the circular groove;

[0095] The annular electromagnetic chuck 82 is in contact with the bent arm plate 91. The annular electromagnetic chuck 82 is an existing device. Under normal conditions, an electric current is passed through the annular electromagnetic chuck 82 to generate suction force, so as to suck and fix all the bent arm plates 91, ensuring that the fixation of several main reinforcement bars 3 can be achieved. After the current is disconnected, the suction force of the annular electromagnetic chuck 82 disappears, canceling the adsorption of several bent arm plates 91. At this time, several bent arm plates 91 can be rotated arbitrarily along the ring 81, and then the positions of several main reinforcement bars 3 finally fixed will change accordingly, further improving flexibility. It cooperates with the guiding and positioning member 9 to realize the flexible adjustment of the spatial positions of several main reinforcement bars 3. Or directly remove the annular electromagnetic chuck 82, then remove the corresponding number of the guiding and positioning members 9 as required, or install new guiding and positioning members 9 into the circular groove, so as to adapt to the production of steel cages with different numbers of main reinforcement bars 3.

[0096] Optionally, arc-shaped gaskets 10 are provided on both clamping jaws of the hydraulic clamping jaw 53;

[0097] Grid-shaped convex patterns are engraved on both of the arc-shaped gaskets 10 to enhance the friction between them when the hydraulic clamping jaw 53 clamps the stirrup 4, so that the hydraulic clamping jaw 53 firmly clamps the stirrup 4, thereby preventing the stirrup 4 from slipping when the stirrup 4 is tightened;

[0098] The bottom seat frame 1 is composed of multiple single-seat frames spliced together. The number of single-seat frames can be flexibly increased or decreased according to the length of the steel cage to be produced, so that the overall length of the bottom seat frame 1 matches the length of the actually produced steel cage, ensuring normal welding while avoiding the long bottom seat frame 1 occupying the site.

[0099] Optionally, arc-shaped grooves 11 are formed on the opposite surfaces of the two side plates 25;

[0100] Support plates 12 are respectively connected to both sides of the spot welding gun 292;

[0101] The other ends of the two support plates 12 are movably arranged in the arc-shaped grooves 11. During the process of the first motor 29 swinging the spot welding gun 292 up and down, the two support plates 12 respectively move synchronously in the two arc-shaped grooves 11, using the two support plates 12 to always provide support for the position of the spot welding gun 292 away from the rectangular block 27, increasing the fixing points of the spot welding gun 292, ensuring the stability of the spot welding gun 292, and preventing the spot welding gun 292 from flashing and deviating from the welding point during the welding process, resulting in the welding effect being affected.

[0102] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A concrete pipe pile reinforcement cage welding device, characterized in that: include: A bottom frame (1), a spiral welding portion (2) arranged on the bottom frame (1), a plurality of main bars (3) fixedly inserted in a circumference of the spiral welding portion (2) and a coiled stirrup (4), a tightening mechanism (5) installed on the spiral welding portion (2), and a bracing and expanding mechanism (6) located on one side of the bottom frame (1) and extending into the plurality of main bars (3), wherein: The spiral welding portion (2) is suitable for spirally winding the stirrup (4) at a constant pitch and welding it onto a plurality of the main bars (3); The spiral welding part (2) can automatically adjust the welding point in pitch, so as to adjust the welding point within a certain range; Driving the tightening mechanism (5) can locally tighten the stirrup (4) in an arc direction, so that the stirrup (4) and a plurality of the main bars (3) are tightly entangled; The supporting and expanding mechanism (6) is suitable for supporting a plurality of the main bars (3) in the opposite direction to the winding direction of the stirrups (4) so ​​as to shape corresponding parts of the plurality of the main bars (3) and prevent them from sinking and retreating.

2. The concrete pipe pile reinforcement cage welding device according to claim 1, characterized in that: The rotary welding portion (2) comprises a wall plate (21) fixedly mounted on the bottom frame (1), an annular rotating wheel (22) mounted on the wall plate (21), a winding wheel (23) and a twisting arm (24) mounted on the annular rotating wheel (22), the twisting arm (24) being located behind the winding wheel (23) and being closer to the central axis of the annular rotating wheel (22) than the winding wheel (23), two side plates (25) mounted on the annular rotating wheel (22) and located behind the twisting arm (24), a tail shaft (26) rotatably mounted between the two side plates (25), and a rectangular block (27) centrally fixedly mounted on the tail shaft (26). A first gear (28) mounted on the tail shaft (26), a first motor (29) mounted on one of the side panels (25), a second gear (291) mounted on the output end of the first motor (29), the second gear (291) being meshed with the first gear (28), a spot welding gun (292) connected to the rectangular block (27), a linear running wall panel (7) arranged on the bottom frame (1), the linear running wall panel (7) and the wall panel (21) being coaxially provided with a circular through groove, a circumferential adjustment mechanism (8) arranged on the linear running wall panel (7), and a plurality of groups of guide positioning members (9) circumferentially arranged on the circumferential adjustment mechanism (8); The wall panel (21) is located directly in front of the linear running wall panel (7); The stirrup (4) is wound on the winding wheel (23); A plurality of the main ribs (3) are respectively inserted into a plurality of groups of the guide positioning members (9) and extend forward in a straight line through the wallboard (21) and the annular rotating wheel (22); The spot welding gun (292) is in contact with the rotation trajectory of a plurality of the main ribs (3).

3. The concrete pipe pile reinforcement cage welding device according to claim 2, characterized in that: The guide positioning member (9) comprises a bending arm plate (91) arranged on the circumferential adjustment mechanism (8), a rectangular through slot (92) provided on the bending arm plate (91), a two-way side folding plate (93) slidably mounted on the bending arm plate (91) and located in the rectangular through slot (92), two first bolts (94) respectively screwed on both sides of the two-way side folding plate (93) and screwed into the bending arm plate (91), a plurality of threaded holes (95) provided on the bending arm plate (91) and respectively colinear with the two first bolts (94), a rubber ring sleeve (96) centrally penetrating the two-way side folding plate (93), a rubber guide long tube (97) connected to the inside of the rubber ring sleeve (96), two arc-shaped clamping plates (98) slidably mounted on the two-way side folding plate (93) and respectively located on both sides of the rubber guide long tube (97), and two second bolts (99) respectively screwed on the two arc-shaped clamping plates (98) at both ends; The entrance of the rubber guide cylinder (97) is in a bell-mouth shape; A plurality of the main ribs (3) are respectively inserted through the rubber guide long tubes (97) of a plurality of groups of the guide positioning members (9).

4. The concrete pipe pile reinforcement cage welding device according to claim 3, characterized in that: The tightening mechanism (5) comprises a concave plate (51) arranged on the annular rotating wheel (22), and the concave plate (51) is located between the twisting arm (24) and the spot welding gun (292), a first electric push rod (52) installed at the rear of the concave plate (51), a hydraulic clamp (53) movably installed in the concave plate (51) and the rear end of which is connected to the output end of the first electric push rod (52), and a second electric push rod (54) installed on the annular rotating wheel (22) and located above the concave plate (51), and the output end of the second electric push rod (54) is hinged to the rear of the concave plate (51); The hydraulic clamp (53) faces a plurality of the main ribs (3); The middle portion of the concave plate (51) is rotatably mounted on the annular rotating wheel (22).

5. The concrete pipe pile reinforcement cage welding device according to claim 4, characterized in that: The support and expansion mechanism (6) comprises a bracket (61) located on one side of the bottom frame (1), a double-ended open tube (62) fixed to the bracket (61), the double-ended open tube (62) extending into a plurality of the main ribs (3), and a plurality of supporting members (63) circumferentially arranged on the double-ended open tube (62); The plurality of support members (63) are flush with the hydraulic clamp (53) and the spot welding gun (292); The plurality of support members (63) are respectively in contact with the plurality of main ribs (3).

6. The concrete pipe pile reinforcement cage welding device according to claim 5, characterized in that: The support and expansion mechanism (6) further comprises an inner rod (64) partially spirally mounted in the double-ended open tube (62), wherein the inner rod (64) protrudes from the end of the double-ended open tube (62), a plurality of outer sleeves (65) circumferentially penetrate the inner rod (64) and are mounted on the circumferential side of the double-ended open tube (62), a plurality of key grooves (66) circumferentially arranged on the inner rod (64), a plurality of arc plates (67) respectively slidably mounted in the plurality of the key grooves (66), and a plurality of push-pull plates (68) each having one end hinged to the plurality of the arc plates (67); The plurality of support members (63) are respectively slidably inserted into the plurality of outer sleeves (65) and extend into the double-ended open tube (62); One end of the plurality of support members (63) extending into the double-ended open tube (62) is hingedly connected to the other end of the plurality of push-pull plates (68).

7. The concrete pipe pile reinforcement cage welding device according to claim 6, characterized in that: The support member (63) comprises a main rod body (631) slidably inserted into the outer sleeve (65), and a roller (632) mounted on the end of the main rod body (631) and located outside the double-ended open tube (62).

8. The concrete pipe pile reinforcement cage welding device according to claim 7, characterized in that: The circumferential adjustment mechanism (8) comprises a circular ring (81) and an annular electromagnetic suction cup (82) installed at intervals in the linear travel wall panel (7); The circular ring (81) is provided with a circular groove, and the bending arm plate (91) is slidably connected to the circular ring (81) via the circular groove; The annular electromagnetic suction cup (82) is in contact with the bent arm plate (91).

9. The concrete pipe pile reinforcement cage welding device according to claim 8, characterized in that: Both clamping jaws of the hydraulic clamping jaw (53) are provided with arc-shaped gaskets (10); The two arc-shaped gaskets (10) are both engraved with grid-like convex patterns; The bottom seat frame (1) is formed by splicing together a plurality of sections of single-body seat frames.

10. The concrete pipe pile reinforcement cage welding device according to claim 9, characterized in that: An arc-shaped groove (11) is formed on the facing surfaces of the two side plates (25); Support plates (12) are respectively connected to both sides of the spot welding gun (292); The other ends of the two support plates (12) are movably disposed in the arc-shaped groove (11).

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