A welding device for steel cage used in bridge construction

Abstract

The present invention relates to the field of orthopedic welding, and specifically provides a welding device for a steel cage for bridge construction, including a base and a welding manipulator, a rotating mechanism, a positioning mechanism and a locking mechanism, wherein the rotating mechanism includes a circular turntable, a driving wheel and a belt; the positioning mechanism includes a disc frame, an elastic pad and a central support disc, the central support disc is fixed at the center of the disc frame, the elastic pad is fixed at the bottom of the receiving groove by a spring, the central support disc is provided with a slide groove, and an adjustment head is installed in the slide groove; the locking mechanism includes a locking disc, a plurality of arc grooves are opened on the locking disc, a push rod is fixed at the bottom of the adjustment head, and the end face of the locking disc can abut against the central support disc. The positions of multiple steel bars on the steel cage are adjusted by the positioning mechanism, so that the steel bars can be welded to form steel cages of different diameters, and the positions of the steel bars are locked by the locking mechanism after the steel bars are positioned, so as to prevent the steel cage from being deformed during the welding process.

Description

Technical Field

[0001] The invention relates to the field of orthopedic welding, and in particular to welding equipment for a steel cage used in bridge construction. Background Art

[0002] In the existing fields such as building pile foundation and road and bridge construction, welding of steel cages is often required. The steel cage can be formed by arranging the horizontal bars at intervals to form a ring bar frame and arranging the longitudinal bars on the outer ring of the ring bar frame, and then the positions between the horizontal bars and the longitudinal bars are welded manually or mechanically. In the existing technology, the welding of steel cages is mostly done by manual welding, and there are also CNC steel cage rolling welding machines, which rotate the main bars to spirally wrap the stirrups around the outside of the main bars, and then use CNC welding guns to weld the stirrups and the main bars together to form the steel body.

[0003] A steel cage welding device with a patent document announcement number of CN115570301B includes a frame, a transverse reinforcement feeding mechanism, a longitudinal reinforcement feeding mechanism, a welding mechanism and a tensioning mechanism; a longitudinal reinforcement moving seat is installed on the frame; the longitudinal reinforcement moving seat is provided with a rotating installation port for passing the transverse reinforcement; the longitudinal reinforcement clamp is movably connected to the frame; a first labeling and recognition device is communicatively connected to the longitudinal reinforcement clamp, and the first labeling and recognition device is used to recognize the positioning label and control the longitudinal reinforcement clamp to place the longitudinal reinforcement at the positioning label so that the longitudinal reinforcement is located at the outer ring of the ring reinforcement frame. This patent can improve the accuracy of the longitudinal reinforcement welding position at the transverse reinforcement by pasting positioning labels on the transverse reinforcement and positioning the longitudinal reinforcement through the positioning labels, so as to control the longitudinal reinforcement gap, and solve the problem that the longitudinal reinforcement of the steel cage is difficult to locate at the transverse reinforcement position in the prior art. However, this patent still has some shortcomings: 1. It is difficult to weld and position steel cages of different diameters, which leads to easy dislocation and deformation during the welding process of the steel cage. 2. The steel bar may bend during welding, causing the overall deformation of the steel cage. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that the steel cage is easily deformed during welding, the present invention provides a welding device for the steel cage used in bridge construction to solve the above problem.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a welding device for a steel cage for bridge construction, comprising a base for supporting both ends of the steel cage and a welding manipulator for welding the steel cage, and also comprising a rotating mechanism, a positioning mechanism and a locking mechanism, wherein the rotating mechanism comprises an annular turntable, a driving wheel and a belt, wherein the annular turntable is rotatably mounted on the base, and the driving wheel drives the annular turntable to rotate through a belt; the positioning mechanism comprises a disc frame, an elastic pad and a central support disc, wherein the disc frame is coaxially fixedly connected to the annular turntable, the central support disc is fixed to the center of the disc frame, and a plurality of equidistantly spaced plates for placing steel are arranged on the disc frame along the inner ring. The cam is provided with a receiving groove for the rib, the elastic pad is fixed to the bottom of the receiving groove by a spring, the outer ring of the center support plate is provided with a sliding groove corresponding to the receiving groove one by one, an adjusting head is installed in each of the sliding grooves, and the top of the adjusting head can extend into the receiving groove; the locking mechanism includes a locking plate, the locking plate is provided with a plurality of arc grooves, a push rod is fixed to the bottom of the adjusting head, the push rod is slidably installed in the arc groove, and the end face of the locking plate can abut against the center support plate, and when the locking plate abuts against the center support plate, the arc groove intersects with the projection of the sliding groove toward the locking plate, thereby locking the push rod in the arc groove, and at this time the push rod and the adjusting head cannot move along the sliding groove.

[0006] Preferably, the positioning mechanism further comprises a rotating frame and a central axis, the two ends of the rotating frame are fixed to the inner ring of the disc frame and avoid the receiving groove, the central axis is fixed on the rotating frame, and the central support disk is coaxially fixedly mounted on the central axis.

[0007] Preferably, the width of the receiving groove is greater than the diameter of the steel bar.

[0008] Preferably, a roller is rotatably mounted on the top of the adjusting head, and the steel bar can pass between the roller and the elastic pad.

[0009] Preferably, the locking mechanism also includes a fixed frame, an electric telescopic rod, an axle seat and a driven shaft, the fixed frame is fixed on the base, the electric telescopic rod is installed on the fixed frame, the rod head of the electric telescopic rod is fixedly connected to the axle seat via a connecting frame, one end of the driven shaft is rotatably mounted on the axle seat, the other end of the driven shaft is coaxially fixedly connected to the center of the locking disk, and the electric telescopic rod drives the locking disk to approach or move away from the central support disk via the driven shaft.

[0010] Preferably, the driven shaft is also provided with a sleeve, and the sleeve is fixed to the top of the fixed frame. The outer wall of the driven shaft is provided with an external spline, and the inner wall of the sleeve is provided with an internal spline. When the driven shaft and the locking plate are separated from the center support plate, the external spline on the driven shaft can engage with the internal spline on the sleeve. At this time, the center support plate can continue to rotate while the locking plate cannot rotate.

[0011] Preferably, a friction plate is provided on the abutting surface between the locking plate and the central supporting plate.

[0012] Preferably, when the external splines on the driven shaft are engaged with the internal splines on the sleeve, rotating the central support plate can drive the push rod at the bottom of the adjusting head to slide up and down in the arc groove.

[0013] The beneficial effect of the present invention is that a positioning mechanism and a locking mechanism are provided, and the positions of multiple steel bars on the steel cage are adjusted by the positioning mechanism so that the steel bars can be welded to form steel cages of different diameters. After the steel bar positioning is completed, the position of the steel bar is locked by the locking mechanism to prevent the steel cage from being deformed during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0015] Figure 1 It is a structural schematic diagram of a preferred embodiment of a welding device for a reinforcement cage for bridge construction according to the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of a receiving groove and steel bars of a welding device for a steel cage for bridge construction according to the present invention;

[0017] Figure 3 It is a structural schematic diagram of a ring-shaped turntable of a welding device for a reinforcement cage for bridge construction according to the present invention;

[0018] Figure 4 It is a structural schematic diagram of an external spline of a welding device for a reinforcement cage for bridge construction according to the present invention;

[0019] Figure 5 It is a structural schematic diagram of a disc frame of a welding device for a reinforcement cage for bridge construction according to the present invention;

[0020] Figure 6 It is a structural schematic diagram of a central support plate of a welding device for a reinforcement cage for bridge construction according to the present invention;

[0021] Figure 7 It is a state diagram of a welding device for a reinforcement cage for bridge construction according to the present invention when a locking plate is separated from a central support frame;

[0022] Figure 8 This is a state diagram of a locking plate of a welding device for a reinforcement cage for bridge construction according to the present invention when it abuts against a central support frame.

[0023] Figure numerals: 1. steel bar; 2. base; 3. welding manipulator; 4. rotating mechanism; 5. positioning mechanism; 6. locking mechanism; 7. annular turntable; 8. driving wheel; 9. belt; 10. disc frame; 11. elastic pad; 12. center support plate; 13. receiving groove; 14. slide groove; 15. adjusting head; 16. locking plate; 17. arc groove; 18. push rod; 19. rotating frame; 20. center axis; 21. roller; 22. fixed frame; 23. electric telescopic rod; 24. shaft seat; 25. driven shaft; 26. shaft sleeve; 27. external spline. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0026] like Figures 1 to 8 As shown, the present invention provides an embodiment of a welding device for a steel cage for bridge construction, including a base 2 for supporting both ends of the steel cage and a welding manipulator 3 for welding the steel cage, and also includes a rotating mechanism 4, a positioning mechanism 5 and a locking mechanism 6. The rotating mechanism 4 includes an annular turntable 7, a driving wheel 8 and a belt 9. The annular turntable 7 is rotatably installed on the base 2, and the driving wheel 8 drives the annular turntable 7 to rotate through the belt 9.

[0027] The positioning mechanism 5 includes a disc frame 10, an elastic pad 11 and a central support plate 12. The disc frame 10 is coaxially fixedly connected to the annular turntable 7. The central support plate 12 is fixed at the center of the disc frame 10. A plurality of receiving grooves 13 for placing steel bars 1 are arranged at equal intervals along the inner circle of the disc frame 10. The width of the receiving groove 13 is greater than the diameter of the steel bar 1, so that steel bars 1 of different diameters can be placed in the receiving groove 13 for fixation during actual use.

[0028] The elastic pad 11 is fixed to the bottom of the receiving groove 13 by a spring, and the outer ring of the central support plate 12 is provided with a slide groove 14 corresponding to the receiving groove 13 one by one, and an adjusting head 15 is installed in each slide groove 14. The top end of the adjusting head 15 can extend into the receiving groove 13, and a roller 21 is rotatably installed on the top end of the adjusting head 15. The steel bar 1 can pass between the roller 21 and the elastic pad 11. When the adjusting head 15 extends out of the slide groove 14, the steel bar 1 can be pressed against the elastic pad 11. The shape of the surface of the roller 21 fits the surface of the steel bar 1, so that after the steel bar 1 enters the receiving groove 13, the guiding effect of the roller 21 keeps the steel bar 1 in a position close to the center of the receiving groove 13 to prevent the steel bar 1 from sliding and dislocating to both sides.

[0029] The positioning mechanism 5 also includes a rotating frame 19 and a central axis 20. The two ends of the rotating frame 19 are fixed to the inner ring of the disc frame 10 and avoid the receiving groove 13. The central axis 20 is fixed on the rotating frame 19. The central support plate 12 is coaxially fixedly installed on the central axis 20. When the annular turntable 7 rotates, it can drive the disc frame 10 to rotate, and drive the steel bars 1 in the receiving groove 13 to rotate with the disc frame 10 as the center, thereby realizing the overall rotation of the steel cage, so that the welding position on the steel cage can be rotated to the welding robot 3 for welding. At the same time, the rotation of the disc frame 10 can also drive the rotating frame 19 and the central axis 20 to rotate, realizing the effect of the central axis 20 driving the central support plate 12 to rotate.

[0030] The locking mechanism 6 includes a locking disk 16, which is provided with a plurality of arc grooves 17. A push rod 18 is fixed to the bottom of the adjusting head 15, and the push rod 18 is slidably installed in the arc groove 17. The end face of the locking disk 16 can abut against the central support disk 12. When the locking disk 16 abuts against the central support disk 12, a friction plate is provided on the abutting surface of the locking disk 16 and the central support disk 12, so as to increase the friction between the locking disk 16 and the support disk, so that the two cannot produce relative displacement when abutting, that is, when the central support disk 12 rotates, the locking disk 16 will also be driven to rotate together, and the arc groove 17 intersects with the projection of the slide groove 14 toward the locking disk 16, thereby locking the push rod 18 in the arc groove 17. At this time, the push rod 18 and the adjusting head 15 cannot move along the slide groove 14.

[0031] The locking mechanism 6 also includes a fixed frame 22, an electric telescopic rod 23, an axle seat 24 and a driven shaft 25. The fixed frame 22 is fixed on the base 2, the electric telescopic rod 23 is installed on the fixed frame 22, the rod head of the electric telescopic rod 23 is fixedly connected to the axle seat 24 through a connecting frame, one end of the driven shaft 25 is rotatably installed on the axle seat 24, and the other end of the driven shaft 25 is coaxially fixedly connected to the center of the locking disk 16. The electric telescopic rod 23 drives the locking disk 16 to approach or move away from the central support disk 12 through the driven shaft 25.

[0032] The driven shaft 25 is also sleeved with a shaft sleeve 26, which is fixed to the top of the fixing frame 22. The outer wall of the driven shaft 25 is provided with an external spline 27, and the inner wall of the shaft sleeve 26 is provided with an internal spline. When the driven shaft 25 and the locking plate 16 are separated from the center support plate 12, the external spline 27 on the driven shaft 25 can engage with the internal spline on the shaft sleeve 26. At this time, the center support plate 12 can continue to rotate while the locking plate 16 cannot rotate. When the external spline 27 on the driven shaft 25 engages with the internal spline on the shaft sleeve 26, rotating the center support plate 12 can drive the push rod 18 at the bottom of the adjusting head 15 to slide up and down along the arc groove 17.

[0033] The working principle of the locking mechanism 6 is as follows: after the steel bar 1 is inserted into the receiving groove 13, the electric telescopic rod 23 drives the driven shaft 25 and the locking plate 16 away from the central support plate 12, so that the locking plate 16 is separated from the central support plate 12, until the outer spline 27 on the driven shaft 25 is engaged with the inner spline on the shaft sleeve 26. At this time, the driven shaft 25, the locking plate 16 and the shaft sleeve 26 cannot rotate, and the annular turntable 7 drives the disc frame 10, the rotating frame 19, the central shaft 20 and the central support plate 12 to continue to rotate, so that the locking plate 16 and the central support plate 12 can be released. Therefore, when the center support plate 12 rotates, the adjusting head 15 in the slide groove 14 of the center support plate 12 can be driven to move. During the movement of the adjusting head 15, the push rod 18 at the bottom thereof can move along the arc groove 17 on the locking plate 16. Through the guiding effect of the arc groove 17, the push rod 18 and the adjusting head 15 can move up and down to achieve the effect of extending out or receiving the slide groove 14, and then the distance from the steel bar 1 to the bottom of the receiving groove 13 is adjusted by the adjusting head 15, that is, the diameter of the steel cage is adjusted to achieve the effect of welding steel cages with different diameters.

[0034] When the position adjustment of the steel bar 1 is completed, the electric telescopic rod 23 is reset to drive the driven shaft 25 and the locking plate 16 to move toward the center support plate 12 until the outer spline 27 on the driven shaft 25 is disengaged from the inner spline on the sleeve 26, and the locking plate 16 is pressed against the center support plate 12. At this time, the locking plate 16 can rotate around the driven shaft 25. Therefore, when the center support plate 12 rotates, it can drive the locking plate 16 to rotate together. No displacement can occur between the locking plate 16 and the center support plate 12, and the projections of the slide groove 14 and the arc groove 17 intersect, while the push rod 18 is located at the intersection of the slide groove 14 and the arc groove 17 and cannot move. Therefore, the push rod 18 and the adjusting head 15 cannot move during the rotation of the center support plate 12, so that the steel bar 1 can remain stable during the welding process.

[0035] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above are only preferred implementation methods of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A welding device for a steel cage for bridge construction, comprising a base (2) for supporting both ends of the steel cage and a welding manipulator (3) for welding the steel cage, characterized in that: It also comprises a rotating mechanism (4), a positioning mechanism (5) and a locking mechanism (6); the rotating mechanism (4) comprises an annular turntable (7), a driving wheel (8) and a belt (9); the annular turntable (7) is rotatably mounted on the base (2); the driving wheel (8) drives the annular turntable (7) to rotate via the belt (9); The positioning mechanism (5) comprises a disc frame (10), an elastic pad (11) and a central support plate (12); the disc frame (10) is coaxially fixedly connected to the annular rotating disk (7); the central support plate (12) is fixed at the center of the disc frame (10); a plurality of receiving grooves (13) for placing steel bars (1) are arranged at equal intervals along the inner circle of the disc frame (10); the elastic pad (11) is fixed to the bottom of the receiving groove (13) by a spring; the outer circle of the central support plate (12) is provided with slide grooves (14) corresponding to the receiving grooves (13); an adjusting head (15) is installed in each slide groove (14); the top end of the adjusting head (15) can extend into the receiving groove (13); The locking mechanism (6) comprises a locking plate (16) having a plurality of arc grooves (17) formed thereon. A push rod (18) is fixed to the bottom of the adjusting head (15). The push rod (18) is slidably mounted in the arc groove (17). The end surface of the locking plate (16) can abut against the central support plate (12). When the locking plate (16) abuts against the central support plate (12), the arc groove (17) intersects with a projection of the slide groove (14) toward the locking plate (16), thereby locking the push rod (18) in the arc groove (17). At this time, the push rod (18) and the adjusting head (15) cannot move along the slide groove (14).

2. The welding equipment for a steel cage for bridge construction as claimed in claim 1, characterized in that: The positioning mechanism (5) further comprises a rotating frame (19) and a central shaft (20), wherein two ends of the rotating frame (19) are fixed to the inner ring of the disc frame (10) and avoid the receiving groove (13), the central shaft (20) is fixed to the rotating frame (19), and the central support disc (12) is coaxially fixedly mounted on the central shaft (20).

3. The welding equipment for a steel cage for bridge construction as claimed in claim 1, characterized in that: The width of the receiving groove (13) is greater than the diameter of the steel bar (1).

4. The welding equipment for a steel cage for bridge construction as claimed in claim 1, characterized in that: A roller (21) is rotatably mounted on the top end of the adjusting head (15), and the steel bar (1) can pass between the roller (21) and the elastic pad (11).

5. The welding equipment for a steel cage for bridge construction as claimed in claim 1, characterized in that: The locking mechanism (6) further comprises a fixing frame (22), an electric telescopic rod (23), a shaft seat (24) and a driven shaft (25); the fixing frame (22) is fixed on the base (2); the electric telescopic rod (23) is mounted on the fixing frame (22); a rod head of the electric telescopic rod (23) is fixedly connected to the shaft seat (24) via a connecting frame; one end of the driven shaft (25) is rotatably mounted on the shaft seat (24); the other end of the driven shaft (25) is coaxially fixedly connected to the center of the locking disk (16); the electric telescopic rod (23) drives the locking disk (16) to approach or move away from the central support disk (12) via the driven shaft (25).

6. The welding equipment for a steel cage for bridge construction as claimed in claim 5, characterized in that: The driven shaft (25) is also sleeved with a shaft sleeve (26), and the shaft sleeve (26) is fixed to the top end of the fixing frame (22). The outer wall of the driven shaft (25) is provided with an external spline (27), and the inner wall of the shaft sleeve (26) is provided with an internal spline. When the driven shaft (25) and the locking plate (16) are separated from the central support plate (12), the external spline (27) on the driven shaft (25) can engage with the internal spline on the shaft sleeve (26), and at this time, the central support plate (12) can continue to rotate while the locking plate (16) cannot rotate.

7. The welding equipment for a steel cage for bridge construction as claimed in claim 1, characterized in that: The abutting surfaces of the locking plate (16) and the central supporting plate (12) are provided with friction plates.

8. The welding equipment for a reinforcement cage for bridge construction as claimed in claim 6, characterized in that: When the external spline (27) on the driven shaft (25) is engaged with the internal spline on the shaft sleeve (26), the rotation of the central support plate (12) can drive the push rod (18) at the bottom of the regulating head (15) to slide up and down along the arc groove (17).

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