Reinforcing mesh welding mechanism for concrete cable trench cover plate machining

Abstract

The invention relates to the field of welding devices, in particular to a reinforcing mesh welding mechanism for concrete cable trench cover plate machining. The whole device is supported through a bottom plate at the bottom, a supporting frame used for containing a reinforcing mesh is arranged on the bottom plate, an electric resistance welding device used for conducting row welding on the reinforcing mesh is arranged on the bottom plate, and a traction device used for pulling the reinforcing mesh to move is arranged on the bottom plate. The reinforcing mesh is composed of a plurality of transverse reinforcing steel bars and longitudinal reinforcing steel bars alternately located above and below the transverse reinforcing steel bars, an upper discharging mechanism for placing the longitudinal reinforcing steel bars on the transverse reinforcing steel bars is arranged on the bottom plate, and a lower discharging mechanism for abutting the longitudinal reinforcing steel bars against the transverse reinforcing steel bars from the lower portion is arranged on the bottom plate. An upper welding electrode and a lower welding electrode on the electric resistance welding device can both ascend and descend in the vertical direction, and the moving distances of the upper welding electrode and the lower welding electrode before welding are different according to different positions of longitudinal steel bars. By welding the longitudinal reinforcing steel bars which are alternately arranged up and down, the reinforcing mesh can well adapt to bidirectional force, and the overall strength of the reinforcing mesh is improved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment, and more particularly to a steel mesh welding mechanism for processing concrete cable trench covers. Background Technology

[0002] Concrete cable trench covers are prefabricated components used to cover cable trenches, protecting cables from external damage and ensuring pedestrian safety. The reinforcing mesh is a key structure in the cover, made of interwoven steel bars welded together, which enhances the cover's strength and durability.

[0003] Chinese Patent CN113059257B discloses a rebar mesh forming device, including a welding host with multiple linearly arranged electrodes. One side of the welding host has multiple vertically arranged rebar feeders, and the other side has a horizontal rebar feeder. The linearly arranged electrodes increase in height from one end to the other. The welding host is connected to the electrodes via a first cylinder. The electrodes are block-shaped with V-grooves at their bottom. Multiple rollers are arranged along the feeding direction of the vertical rebar feeders, and the tops of the rollers form a support surface that passes under the welding host. This invention has the advantage of producing a high-strength rebar mesh structure.

[0004] However, the above-mentioned publicly available solutions have the following shortcomings: the longitudinal reinforcement is always welded above the transverse reinforcement, and the steel mesh welded in this way has poor strength when subjected to bidirectional stress. Summary of the Invention

[0005] The purpose of this invention is to address the problem in the prior art where all longitudinal reinforcing bars are welded above transverse reinforcing bars, making it difficult to withstand bidirectional stress, and to propose a steel mesh welding mechanism for processing concrete cable trench covers.

[0006] The technical solution of this invention is as follows: A steel mesh welding mechanism for processing concrete cable trench covers. Its overall structure is supported by a bottom plate. A support frame for placing the steel mesh is provided on the bottom plate. A resistance welding device for welding the steel mesh is also provided on the bottom plate, as well as a traction device for moving the steel mesh. The steel mesh consists of multiple transverse steel bars and longitudinal steel bars alternately positioned above and below the transverse steel bars. An upper feeding mechanism for placing the longitudinal steel bars onto the transverse steel bars is provided on the bottom plate, and a lower feeding mechanism for pressing the longitudinal steel bars against the transverse steel bars from below is also provided. Both the upper and lower welding electrodes on the resistance welding device can move vertically. The moving distance of the upper and lower welding electrodes before welding varies depending on the position of the longitudinal steel bars.

[0007] Preferably, multiple upper welding electrodes are arranged at equal intervals along the longitudinal direction, and the number is equal to the number of transverse reinforcing bars. An electrode lifting device is provided on the bottom plate to drive the lower welding electrodes to rise and fall.

[0008] Preferably, the feeding mechanism includes a feeding box mounted on the base plate via a mounting frame, multiple feeding guide rods rotatably mounted at the bottom of the feeding box on the discharge side, and an upwardly tilted section mounted at the bottom of the feeding guide rods and tilted upwards, with longitudinal steel bars rolling to the junction of the feeding guide rods and the upwardly tilted section.

[0009] Preferably, a support rod is provided at the top of the upper feeding guide rod along the longitudinal direction, and a fixing block is provided at the bottom of the discharge side of the upper feeding box. The support rod is rotatably connected to the fixing block, and an upper torsion spring is sleeved on the support rod. The two ends of the upper torsion spring are respectively connected to the fixing block and the upper feeding guide rod.

[0010] Preferably, the feeding mechanism includes a feeding box disposed on the base plate and a conveying assembly disposed on the discharge side of the feeding box and conveying longitudinal steel bars upward.

[0011] Preferably, the side of the lower material box facing the welding is the discharge side and has an opening, while the side facing away from the welding is the replenishment side and has a replenishment strip groove. The lower material box is equipped with a partition that is inclined towards the conveying component, and the longitudinal steel bars are located on the partition. The conveying component drives one longitudinal steel bar to move upward in sequence.

[0012] Preferably, the conveying assembly includes two discharge guide rods rotatably mounted on the discharge side of the discharge box, an upwardly curved section mounted on the top of the discharge guide rods, a motor mounted on the discharge box, a rotating shaft connected to the motor output shaft, a support plate mounted on the base plate, pulleys rotatably mounted on the support plate and the rotating shaft, and a belt connecting the upper and lower pulleys; the two discharge guide rods form a group, the belt is located between the two discharge guide rods, and multiple feeding baffles are equidistantly arranged on the outer surface of the belt, which lift and convey a longitudinal steel bar upwards.

[0013] Preferably, a support rod is provided at the bottom of the feeding guide rod along the longitudinal direction, and a vertical plate is provided on the base plate. The support rod is rotatably connected to the vertical plate, and a lower torsion spring is sleeved on the support rod. The two ends of the lower torsion spring are respectively connected to the vertical plate and the feeding guide rod.

[0014] Compared with existing technologies, this invention has the following beneficial technical effects: Longitudinal reinforcing bars are alternately placed on the upper and lower sides of transverse reinforcing bars, and then welded using a resistance welding device. After welding one row of weld points, a traction device pulls the reinforcing mesh forward a set distance to weld the next row of weld points. When welding adjacent rows of weld points, it is important to adjust the moving distance of the upper and lower welding electrodes to ensure that regardless of whether the longitudinal reinforcing bars are above or below the transverse reinforcing bars, the upper and lower welding electrodes can properly clamp the reinforcing mesh without causing it to move up and down. By welding alternating longitudinal reinforcing bars, the reinforcing mesh can better adapt to bidirectional forces, improving the overall strength of the reinforcing mesh. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the cross-section of the middle section; Figure 3 for Figure 1 A schematic diagram of the structure after removing the resistance welding device; Figure 4 for Figure 3 Remove the structural diagram of the upper feeding mechanism; Figure 5 for Figure 4 Partial structural diagram; Figure 6 for Figure 5 A schematic diagram of the structure after removing the lower feeding box.

[0016] Reference numerals: 1. Base plate; 2. Support frame; 3. Transverse reinforcing bar; 4. Longitudinal reinforcing bar; 5. Resistance welding device; 6. Upper welding electrode; 7. Lower welding electrode; 8. Electrode lifting device; 9. Upper feeding mechanism; 10. Mounting frame; 11. Lower feeding mechanism; 12. Upper feeding box; 13. Upper feeding guide rod; 14. Upper lifting section; 15. Upper discharge chute; 16. Upper replenishing chute; 17. Upper torsion spring; 18. Upper baffle; 19. Lower feeding box; 20. Lower baffle; 21. Lower feeding guide rod; 22. Lower lifting section; 23. Motor; 24. Rotating shaft; 25. Support rod; 26. Support plate; 27. Pulley; 28. Belt; 29. ​​Feeding baffle; 30. Lower torsion spring. Detailed Implementation

[0017] Example 1, as Figure 1As shown, the present invention proposes a steel mesh welding mechanism for processing concrete cable trench covers. Its overall structure is supported by a base plate 1. A support frame 2 for placing the steel mesh is provided on the base plate 1. A resistance welding device 5 for welding the steel mesh is also provided on the base plate 1. A traction device for moving the steel mesh is also provided on the base plate 1. The traction device is a conventional structure, such as a guide rail with a gripper structure, or a robot; anything that can move the steel mesh forward is acceptable. Since this part of the structure is conventional and not part of the core content of this application, it is not shown in this embodiment. The steel mesh consists of multiple transverse steel bars 3 and longitudinal steel bars 4 alternately located above and below the transverse steel bars 3. The welding points of the resistance welding device 5 are located on the transverse steel bars. At the intersection of the reinforcing bar 3 and the longitudinal reinforcing bar 4, the bottom plate 1 is provided with an upper feeding mechanism 9 that places the longitudinal reinforcing bar 4 onto the transverse reinforcing bar 3, and a lower feeding mechanism 11 that abuts the longitudinal reinforcing bar 4 against the transverse reinforcing bar 3 from below. The upper welding electrode 6 and the lower welding electrode 7 on the resistance welding device 5 can both rise and fall in the vertical direction. Depending on the position of the longitudinal reinforcing bar 4, the moving distance of the upper welding electrode 6 and the lower welding electrode 7 before welding is different. The resistance welding device 5 stores a program to control the rising and falling of the upper welding electrode 6 and the lower welding electrode 7. Depending on the position of the longitudinal reinforcing bar 4, the rising and falling distance of the upper welding electrode 6 and the lower welding electrode 7 is alternately controlled to ensure that the upper welding electrode 6 and the lower welding electrode 7 can clamp the reinforcing mesh without causing the reinforcing mesh to move up and down.

[0018] Furthermore, multiple upper welding electrodes 6 are arranged equidistantly along the longitudinal direction, and their number is equal to the number of transverse reinforcing bars 3. An electrode lifting device 8 is provided on the base plate 1 to drive the lower welding electrode 7 to rise and fall. In an optional embodiment, the electrode lifting device 8 includes a square frame set on the base plate 1, a square block slidably set on the inner wall of the square frame in the vertical direction, and a cylinder or hydraulic cylinder set on the base plate 1 to drive the square block to move up and down. The lower welding electrode 7 is set on the square block. It should be noted that the water and circuit structure diagrams of the upper welding electrode 6 and the lower welding electrode 7 are not shown because the resistance welding device 5 is a common welding equipment in actual production, and this part is a mature technology. Therefore, it will not be described in detail here. The improvement made in this example compared with conventional welding equipment is that the lower welding electrode 7 can also move up and down.

[0019] Example 2, as Figures 2-3 As shown, the present invention proposes a steel mesh welding mechanism for processing concrete cable trench covers. Compared with Embodiment 1, this embodiment details the structure of the upper feeding mechanism 9.

[0020] The upper feeding mechanism 9 includes an upper feeding box 12 mounted on the base plate 1 via a mounting frame 10, multiple upper feeding guide rods 13 rotatably mounted at the bottom of the discharge side of the upper feeding box 12, and an upwardly inclined section 14 located at the bottom of the upper feeding guide rods 13 and tilted upwards. The longitudinal steel bar 4 rolls to the junction of the upper feeding guide rods 13 and the upwardly inclined section 14. Specifically, an upper feeding groove 16 is provided at the top of the upper feeding box 12 to replenish the longitudinal steel bar 4. It can be replenished manually or in conjunction with other automated equipment. An upper discharge groove 15 is provided at the bottom of the discharge side of the upper feeding box 12. A feeding device is provided inside the upper feeding mechanism 9. The feeding device pushes one longitudinal steel bar 4 to the upper discharge groove 15 at a time. In addition, in order to ensure the position of the longitudinal steel bar 4, two upper baffles 18 are also provided on the upper feeding box 12. The two upper baffles 18 are located on both sides of the longitudinal steel bar 4.

[0021] A support rod is set at the top of the upper feeding guide rod 13 along the longitudinal direction. A fixed block is set at the bottom of the discharge side of the upper feeding box 12. The support rod is rotatably connected to the fixed block. An upper torsion spring 17 is sleeved on the support rod. The two ends of the upper torsion spring 17 are connected to the fixed block and the upper feeding guide rod 13 respectively. After the longitudinal steel bar 4 is placed into the transverse steel bar 3, the top of the upward-curved section 14 is higher than the longitudinal steel bar 4. After welding is completed, the traction device pulls the steel mesh forward by a set distance, which is equal to the distance between the axes of the two longitudinal steel bars 4. When traction is performed, the upward-curved section 14 will be squeezed downward, causing the upper feeding guide rod 13 to flip downward at a certain angle. After the longitudinal steel bar 4 is removed, the upper feeding guide rod 13 will be reset under the action of the upper torsion spring 17.

[0022] Example 3, as Figures 4-6 As shown, the present invention proposes a steel mesh welding mechanism for processing concrete cable trench covers. Compared with Embodiment 2, this embodiment details the structure of the material feeding mechanism 11.

[0023] The feeding mechanism 11 includes a feeding box 19 mounted on a base plate 1, and a conveying assembly mounted on the discharge side of the feeding box 19 to convey the longitudinal steel bars 4 upwards. The side of the feeding box 19 facing the welding is the discharge side and has an opening, while the side facing away from the welding is the feeding side and has a feeding slot. The feeding box 19 is equipped with a partition that is inclined towards the conveying assembly. The longitudinal steel bars 4 are located on the partition, and the conveying assembly sequentially moves one longitudinal steel bar 4 upwards.

[0024] Furthermore, the conveying assembly includes two lowering guide rods 21 rotatably disposed on the discharge side of the lowering hopper 19, an upwardly curved section 14 disposed on the top of the lowering guide rods 21, a motor 23 disposed on the lowering hopper 19, a rotating shaft 24 connected to the output shaft of the motor 23, a support plate 26 disposed on the base plate 1, a pulley 27 rotatably disposed on the support plate 26 and the rotating shaft 24, and a belt 28 drivingly connecting the upper and lower pulleys 27; the two lowering guide rods 21 form a group, the belt 28 is located between the two lowering guide rods 21, and multiple feeding baffles 29 are equidistantly disposed on the outer surface of the belt 28, which lift a longitudinal steel bar 4 and convey it upward; in a top view, the upper feeding guide rod 13 is located between the two lowering guide rods 21, and in order to ensure the longitudinal position of the longitudinal steel bar 4, two lower baffles 20 are disposed on the lowering hopper 19, and the two lower baffles 20 are located on both sides of the longitudinal steel bar 4 below the transverse steel bar 3.

[0025] A support rod 25 is set longitudinally at the bottom of the feeding guide rod 21, and a vertical plate is set on the bottom plate 1. The support rod 25 is rotatably connected to the vertical plate. A lower torsion spring 30 is sleeved on the support rod 25. The two ends of the lower torsion spring 30 are connected to the vertical plate and the feeding guide rod 21 respectively. In the welding state, the longitudinal steel bar 4 is located on the lower raised section 22 and contacts the bottom of the transverse steel bar 3. The lower torsion spring 30 is in a certain torsion state. After the welding is completed, the traction device pulls the steel mesh forward. The longitudinal steel bar 4 squeezes the lower raised section 22, which further torsional the lower torsion spring 30. After the longitudinal steel bar 4 is removed, the feeding guide rod 21 is reset under the action of the lower torsion spring 30.

[0026] In summary, in use, the longitudinal reinforcing bars 4 are alternately placed on the upper and lower sides of the transverse reinforcing bars 3, and then welded by the resistance welding device 5. After welding one row of weld points, the traction device pulls the reinforcing mesh forward a set distance to weld the next row of weld points. When welding adjacent rows of weld points, it is necessary to pay attention to adjusting the moving distance of the upper welding electrode 6 and the lower welding electrode 7 to ensure that the upper welding electrode 6 and the lower welding electrode 7 can properly clamp the reinforcing mesh without causing the reinforcing mesh to move up and down, regardless of whether the longitudinal reinforcing bars 4 are above or below the transverse reinforcing bars 3. By welding the alternating upper and lower longitudinal reinforcing bars 4, the reinforcing mesh can adapt well to bidirectional forces, improving the overall strength of the reinforcing mesh.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A reinforcing mesh welding mechanism for concrete cable trench cover plate processing, the overall structure is supported by a bottom plate (1) at the bottom, a supporting frame (2) for placing the reinforcing mesh is arranged on the bottom plate (1), a resistance welding device (5) for row welding of the reinforcing mesh is arranged on the bottom plate (1), and a traction device for moving the reinforcing mesh is arranged on the bottom plate (1); characterized in that, The reinforcing mesh is composed of a plurality of transverse steel bars (3) and longitudinal steel bars (4) alternately located above and below the transverse steel bars (3), the bottom plate (1) is provided with an upper feeding mechanism (9) for placing the longitudinal steel bars (4) on the transverse steel bars (3), the bottom plate (1) is provided with a lower feeding mechanism (11) for abutting the longitudinal steel bars (4) on the transverse steel bars (3) from below, the upper welding electrode (6) and the lower welding electrode (7) on the resistance welding device (5) can be lifted in the vertical direction, and the moving distance of the upper welding electrode (6) and the lower welding electrode (7) before welding is different according to the different positions of the longitudinal steel bars (4).

2. The steel mesh welding apparatus for concrete cable trench cover plate processing according to claim 1, characterized in that, A plurality of upper welding electrodes (6) are longitudinally and equidistantly arranged, and the number is equal to the number of the transverse steel bars (3), and the bottom plate (1) is provided with an electrode lifting device (8) for driving the lower welding electrode (7) to lift.

3. The steel mesh welding apparatus for concrete cable trench cover plate processing according to claim 1, characterized in that, The upper feeding mechanism (9) comprises an upper feeding box (12) arranged on the bottom plate (1) through a mounting frame (10), a plurality of upper feeding guide rods (13) rotatably arranged at the bottom of the discharge side of the upper feeding box (12), and an upper lifting section (14) arranged at the bottom of the upper feeding guide rod (13) and inclined upward, and the longitudinal steel bars (4) roll to the junction of the upper feeding guide rod (13) and the upper lifting section (14).

4. The steel mesh welding apparatus for concrete cable trench cover plate processing according to claim 3, characterized in that, The top of the upper feeding guide rod (13) is provided with a support rod in the longitudinal direction, the bottom of the discharge side of the upper feeding box (12) is provided with a fixed block, the support rod is rotatably connected with the fixed block, an upper torsional spring (17) is sleeved on the support rod, and the two ends of the upper torsional spring (17) are respectively connected with the fixed block and the upper feeding guide rod (13).

5. The steel mesh welding apparatus for concrete cable trench cover plate processing according to claim 1, characterized in that, The lower feeding mechanism (11) comprises a lower feeding box (19) arranged on the bottom plate (1) and a conveying assembly arranged on the discharge side of the lower feeding box (19) and conveying the longitudinal steel bars (4) upward.

6. The steel mesh welding apparatus for concrete cable trench cover plate processing according to claim 5, characterized in that, The side of the lower feeding box (19) facing the welding is the discharge side and is provided with an opening, the side away from the welding is the feeding side and is provided with a feeding strip-shaped groove, a partition plate is arranged in the lower feeding box (19) and inclined toward the conveying assembly, the longitudinal steel bars (4) are located on the partition plate, and one longitudinal steel bar (4) is sequentially driven to move upward by the conveying assembly.

7. The steel mesh welding apparatus for concrete cable trench cover plate processing according to claim 6, characterized in that, The conveying assembly comprises two lower feeding guide rods (21) rotatably arranged on the discharge side of the lower feeding box (19), an upper lifting section (14) arranged at the top of the lower feeding guide rod (21), a motor (23) arranged on the lower feeding box (19), a rotating shaft (24) connected with the output shaft of the motor (23), a support plate (26) arranged on the bottom plate (1), a belt pulley (27) rotatably arranged on the support plate (26) and the rotating shaft (24), and a belt (28) drivingly connected with the upper and lower belt pulleys (27); the two lower feeding guide rods (21) form a group, the belt (28) is located between the two lower feeding guide rods (21), a plurality of feeding baffles (29) are equidistantly arranged on the outer side of the belt (28), and one longitudinal steel bar (4) is lifted by the feeding baffles (29) and conveyed upward.

8. The steel mesh welding apparatus for concrete cable trench cover plate processing according to claim 7, characterized in that, The bottom of the lower discharging guide rod (21) is provided with a support rod (25) in the longitudinal direction, a vertical plate is arranged on the bottom plate (1), the support rod (25) is rotationally connected with the vertical plate, a lower torsion spring (30) is sleeved on the support rod (25), and the two ends of the lower torsion spring (30) are respectively connected with the vertical plate and the lower discharging guide rod (21).

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