Steel bar grid welding equipment and welding method for building construction

Abstract

The present invention proposes a steel mesh welding device and welding method for construction, comprising a mobile lifting frame, a fixed frame provided on the mobile lifting frame, an N-shaped steel bar channel provided in the fixed frame, a push-up assembly corresponding to the first turning point of the steel bar channel provided on the fixed frame, a start-stop assembly corresponding to the second turning point of the steel bar channel provided on the fixed frame, and at least one welding assembly provided at the outlet of the steel bar channel. The beneficial effects produced by the present invention are: the bottom of the transverse steel bar is also in contact with the longitudinal steel bar, and in the welding of the welding head, the transverse steel bar is placed by using the longitudinal steel bar to determine the welding height, thereby achieving the effect of adjusting the welding position by using the longitudinal steel bar height; due to the control of the clamping plate and the fixed block, the welding point position of the steel mesh is fixed, so the force point position of the steel mesh is the same, thereby controlling the welding point position to avoid the effect of uneven force.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, and in particular to a steel bar grid welding device and a welding method for building construction. Background Art

[0002] Steel mesh is an indispensable part of building construction. Traditional manual welding of steel mesh takes a long time, while steel mesh welding equipment greatly shortens the welding time, and its welding will not have the phenomenon of leaking welds, and the welding position of the welding equipment is stable.

[0003] In the prior art, the welding height of the welding equipment is fixed, and the steel mesh is welded by multiple steel bars. Due to the influence of the specifications and sizes of the steel bars, if the welding position height is not adjusted, it will lead to cold welds in the welding points and unstable welding of the steel mesh, which is a major flaw in construction. If the position is not fixed, the welding position of each steel bar is inconsistent, and the welding points are inconsistent, which will lead to uneven force.

[0004] Therefore, the demand for high-reliability products is imminent, so we proposed a steel mesh welding equipment for construction, which has the effect of using longitudinal steel bars to place transverse steel bars to determine the welding height and determine the welding points to prevent uneven force. Summary of the invention

[0005] The invention provides a steel mesh welding device and a welding method for building construction, which solve the problems of cold welding and unstable welding of welding points of the steel mesh in the prior art.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A steel mesh welding device for construction includes a mobile lifting frame, a fixed frame is provided on the mobile lifting frame, an N-shaped steel bar channel is provided in the fixed frame, a push-up assembly corresponding to the first turning point of the steel bar channel is provided on the fixed frame, a start-stop assembly corresponding to the second turning point of the steel bar channel is provided on the fixed frame, and at least one welding assembly is provided at the outlet of the steel bar channel. The transverse steel bar is welded to multiple longitudinal steel bars at the outlet of the steel bar channel at the same time.

[0008] The mobile lifting frame includes a longitudinally arranged guide rail and a lifting frame, a movable plate is slidably arranged on the guide rail, the movable plate is connected to the lifting frame through an electric push rod, and a fixed frame is fixedly arranged on the lifting frame. The movable plate moves on the guide rail to drive the fixed frame to move horizontally, and the electric push rod drives the fixed frame to move up and down. The lifting frame is provided with an opening that communicates with the entrance of the steel bar channel. It is convenient to put the transverse steel bars into the steel bar channel.

[0009] A guide door is provided at the first turning point of the steel bar channel, the guide door is hinged to the fixing frame, a torsion spring is provided between the guide door and the fixing frame, and a convex block is provided on the inner wall of the steel bar channel, and the convex block corresponds to the movable end of the guide door.

[0010] The push-up assembly includes a fixed hole plate, which is fixedly arranged on both sides of the fixed frame, and a push rod is slidably arranged on the fixed hole plate, and the upper end of the push rod is provided with a top plate corresponding to the first turning point of the steel bar channel, and the lower end of the push rod is provided with a support plate corresponding to the longitudinal steel bar, and the support plate is located below the fixed frame. The longitudinal steel bar provides support for the support plate, and the top plate is lifted up by the push rod, so that the top plate pushes the transverse steel bar to move.

[0011] The start-stop assembly includes an integrally connected gate and an arc-shaped rack. The gate is located at the second turning point of the steel bar channel. The connection between the gate and the arc-shaped rack is rotatably connected to the fixed frame through a rotating shaft. The rotating shaft is provided with a torque spring. The fixed frame is provided with a contact switch. The arc-shaped rack cooperates with the contact switch. The transverse steel bar pushes the gate to rotate, so that the arc-shaped rack contacts the contact switch, and controls the electric push rod to stop moving.

[0012] The welding assembly comprises a connecting plate, which is connected to a fixing frame via a reset spring, a connecting column is arranged on the connecting plate, and a welding head and a clamping mechanism are arranged at one end of the connecting column. The clamping mechanism limits and presses down the transverse steel bars, and the welding head welds the steel bars.

[0013] The other end of the connecting column is provided with an upper inclined block, a straight rack is slidably provided on the fixed frame, a lower inclined block is provided at the lower end of the straight rack, the upper inclined block cooperates with the lower inclined block, and the straight rack meshes with the arc-shaped rack. The rotation of the arc-shaped rack drives the straight rack to move up and down, and then the welding head and the clamping mechanism move to the horizontal steel bar position through the cooperation of the upper inclined block and the lower inclined block.

[0014] The clamping mechanism includes a push plate, which is fixedly arranged on the connecting column, and a spring telescopic rod is arranged on the push plate, and a clamping plate is arranged at the end of the spring telescopic rod, and the end of the clamping plate is an inclined platform. The clamping mechanism presses the transverse steel bar to determine the relative position of the transverse steel bar and the longitudinal steel bar, and ensures the accuracy of the welding position.

[0015] A welding method for steel mesh welding equipment for building construction comprises the following steps:

[0016] S1, set up welding equipment and place longitudinal steel bars under the fixing frame;

[0017] S2, insert the transverse steel bars from the opening on the lifting frame so that the transverse steel bars enter the steel bar channel;

[0018] S3, the transverse steel bar pushes the guide door open under the action of its own gravity and reaches the first turning point of the steel bar channel;

[0019] S4, the electric push rod is started, so that the lifting frame drives the fixed frame to descend, the longitudinal steel bars contact the support plate and the top plate is lifted up by the push rod, the top plate pushes the transverse steel bars up, and moves obliquely along the steel bar channel to the second turning point of the steel bar channel;

[0020] S5, the transverse steel bar contacts the gate at the second turning point of the steel bar channel, and the transverse steel bar pushes the gate to rotate under the action of its own gravity. At this time, the arc-shaped rack contacts the contact switch, and the contact switch controls the electric push rod to stop moving;

[0021] S6, when the gate rotates, the arc-shaped rack drives the straight rack to move upward, and the upper inclined block cooperates with the lower inclined block to move the welding assembly;

[0022] S7, when the welding assembly moves, the end ramp of the clamping plate squeezes the transverse steel bars so that the transverse steel bars contact the longitudinal steel bars, and the welding head welds the transverse steel bars and the longitudinal steel bars;

[0023] S8, after welding is completed, the transverse steel bar is separated from the gate, the gate returns to its original position under the action of the torque spring, and the welding head and the clamping plate return to their original position under the action of the reset spring;

[0024] S9, the movable plate moves on the guide rail, and steps S2 to S8 are repeated until the welding of all transverse steel bars is completed.

[0025] The beneficial effects produced by the present invention are:

[0026] 1. The steel mesh welding equipment for this construction is added to the inside of the steel channel through transverse steel bars, and then the electric push rod is energized to extend, and the electric push rod pushes the lifting frame to move downward, and the lifting frame drives the fixed block to move downward, and the support plate contacts the longitudinal steel bar first, and the support plate is lifted by the longitudinal steel bar, and the support plate lifts the top plate through the top rod, and the top plate makes the transverse steel bar move upward, and cooperates with the guide door and the steel channel to make the transverse steel bar move to the right. When the transverse steel bar moves to the position of the gate, the transverse steel bar then uses gravity to press the gate, and the arc rack contacts the contact switch. At this time, the electric push rod stops pushing, and at the same time, the gate uses the arc rack to drive the spur rack to move upward, and the spur rack pulls the lower inclined block to move upward, and the lower inclined block squeezes the upper inclined block, so that the electric welding pen moves to the position of the transverse steel bar. At this time, the bottom of the support plate contacts the longitudinal steel bar, and the bottom of the transverse steel bar also contacts the longitudinal steel bar. In cooperation with the welding of the welding head, the longitudinal steel bar is used to place the transverse steel bar to determine the welding height, thereby achieving the effect of adjusting the welding position by the height of the longitudinal steel bar.

[0027] 2. The steel mesh welding equipment of the building construction moves to the position of the transverse steel bar through the push plate. At the same time, the push plate compresses the reset spring by the connecting plate. Then, because the length of the spring telescopic rod and the clamping plate is longer than the length of the welding head, the clamping plate contacts the transverse steel bar first, and the clamping plate cooperates with the fixed block to clamp the transverse steel bar to control the position of the transverse steel bar. The inclined plate is further pushed to make the spring telescopic rod fully contract. At this time, the length of the spring telescopic rod and the clamping plate is equal to the length of the welding head. Finally, the welding head welds the contact position of the transverse steel bar and the longitudinal steel bar. Due to the control of the clamping plate and the fixed block, the welding point position of the steel bar grid is fixed, so the force point position of the steel bar grid is the same, thereby controlling the welding point position to avoid the effect of uneven force. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 The present invention is a schematic diagram of the structure of a steel mesh welding equipment for building construction.

[0030] Figure 2 Use the Top view for welding equipment.

[0031] Figure 3 A schematic diagram of the fixed frame structure.

[0032] Figure 4 Schematic diagram of the movement of transverse reinforcement in the fixed frame.

[0033] Figure 5 Schematic diagram of the welding assembly structure.

[0034] Figure 6 It is a schematic diagram of the push-up component structure.

[0035] In the figure: 1-electric push rod, 11-moving plate, 12-guide rail, 13-longitudinal steel bar, 14-transverse steel bar, 2-lifting frame, 3-fixed frame, 4-steel channel, 5-bump, 6-guide door, 7-push-up assembly, 701-fixed hole plate, 702-top rod, 703-support plate, 704-top plate, 8-start-stop assembly, 801-gate, 802-torque spring, 803-contact switch, 804-arc rack, 805-straight rack, 806-lower inclined block, 9-welding assembly, 901-upper inclined block, 902-connecting plate, 903-reset spring, 904-push plate, 905-welding head, 906-spring telescopic rod, 907-clamping plate. DETAILED DESCRIPTION

[0036] 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.

[0037] Embodiment 1, as Figure 1 , Figure 2 As shown, a steel mesh welding device for construction includes a mobile lifting frame, a fixed frame 3 is provided on the mobile lifting frame, the mobile lifting frame drives the fixed frame 3 to move horizontally and lift vertically, so that the welding equipment welds multiple transverse steel bars 14; an N-shaped steel bar channel 4 is provided in the fixed frame 3, the steel bar channel 4 guides the transverse steel bars 14, so that the transverse steel bars 14 reach an accurate welding position, a push-up component 7 corresponding to the first turning point of the steel bar channel 4 is provided on the fixed frame 3, the push-up component 7 can push the transverse steel bar 14 from the first turning point of the steel bar channel 4 to the second turning point, in this process, the relative position of the longitudinal steel bar 13 and the fixed frame 3 is adjusted, and a start-stop component 8 corresponding to the second turning point of the steel bar channel 4 is provided on the fixed frame 3. The transverse steel bar 14 stops descending the fixed frame 3 after passing through the start-stop component 8, so that the relative position of the longitudinal steel bar 13 and the fixed frame 3 is fixed, and at least one welding component 9 is provided at the outlet of the steel bar channel 4. When the transverse steel bar 14 falls to the outlet of the steel bar channel 4, the transverse steel bar 14 contacts the longitudinal steel bar 13, and at this time, the welding component 9 welds the steel bar. In this embodiment, 9 welding assemblies arranged side by side are provided at the outlet of the steel bar channel 4, that is, the welding equipment can weld multiple positions of a transverse steel bar 14, and the transverse steel bar 14 can be welded to the longitudinal steel bar 13 by one welding, thereby effectively improving the welding efficiency of the steel mesh.

[0038] Furthermore, the mobile lifting frame includes a longitudinally arranged guide rail 12 and a lifting frame 2, a movable plate 11 is slidably provided on the guide rail 12, the movable plate 11 is connected to the lifting frame 2 through an electric push rod 1, and a fixed frame 3 is fixedly arranged on the lifting frame 2. The two guide rails 12 are arranged side by side, and the longitudinal steel bars 13 are laid between the two guide rails 12. The movable plate 11 can slide on the guide rail 12 to change the relative position of the fixed frame 3 and the longitudinal steel bars 13. At the same time, the extension and retraction of the electric push rod 1 can drive the fixed frame 3 to be lifted and lowered through the lifting frame 2, thereby welding the steel bars. The lifting frame 2 is provided with an opening that communicates with the entrance of the steel bar channel 4. The opening facilitates workers to put the transverse steel bars 14 into the steel bar channel 4, so that the welding equipment can perform welding normally.

[0039] Embodiment 2, a steel mesh welding device for construction, such as Figure 3As shown, a guide gate 6 is provided at the first turning point of the steel bar channel 4, the guide gate 6 is hinged to the fixing frame 3, and a torsion spring is provided between the guide gate 6 and the fixing frame 3, and a protrusion 5 is provided on the inner wall of the steel bar channel 4, and the protrusion 5 corresponds to the movable end of the guide gate 6. The transverse steel bar 14 pushes the guide gate 6 downward under the action of its own gravity to reach the first turning point of the steel bar channel 4. After the transverse steel bar 14 passes through the guide gate 6, the guide gate 6 rotates in the opposite direction under the action of the torsion spring, and the protrusion 5 limits the guide gate 6.

[0040] Further, if Figure 6 As shown, the push-up assembly 7 includes a fixed hole plate 701, which is fixedly arranged on both sides of the fixed frame 3, and a push rod 702 is slidably arranged on the fixed hole plate 701, and the fixed hole plate 701 guides the push rod 702, and the upper end of the push rod 702 is provided with a top plate 704 corresponding to the first turning point of the steel bar channel 4, and the lower end of the push rod 702 is provided with a support plate 703 corresponding to the longitudinal steel bar 13, and the support plate 703 is located below the fixed frame 3. When the fixed frame 3 descends, the longitudinal steel bar 13 contacts the support plate 703 and pushes up the support plate 703, and the support plate 703 pushes up the top plate 704 through the push rod 702, thereby pushing the transverse steel bar 14 upward, and the transverse steel bar 14 moves obliquely upward under the joint action of the guide door 6 and the top plate 704 in the N-shaped steel bar channel 4, so that the transverse steel bar 14 reaches the second turning point of the steel bar channel 4.

[0041] The other structures are the same as those of the first embodiment.

[0042] Embodiment 3, a steel mesh welding device for construction, the start-stop assembly 8 includes an integrally connected gate 801 and an arc-shaped rack 804, the gate 801 is located at the second turning point of the steel channel 4, the connection point of the gate 801 and the arc-shaped rack 804 is rotatably connected to the fixed frame 3 through a rotating shaft, a torque spring 802 is provided on the rotating shaft, a contact switch 803 is provided on the fixed frame 3, and the arc-shaped rack 804 cooperates with the contact switch 803. The transverse steel bar 14 moves downward under the action of its own gravity at the second turning point of the steel channel 4, and pushes the gate 801 to rotate. When the gate 801 rotates, the arc-shaped rack 804 contacts the contact switch 803, and the contact switch 803 controls the electric push rod 1 to stop extending, thereby stopping the fixed frame 3 from moving, fixing the relative position of the fixed frame 3 and the longitudinal steel bar 13, and determining the position of the longitudinal steel bar 13. When the transverse steel bar 14 completely passes through the gate 801, the gate 801 and the arc-shaped rack 804 return to their original positions under the action of the torque spring 802.

[0043] Further, if Figure 5As shown, the welding assembly 9 includes a connecting plate 902, which is connected to the fixing frame 3 through a return spring 903. A connecting column is provided on the connecting plate 902, and a welding head 905 and a clamping mechanism are provided at one end of the connecting column. An upper inclined block 901 is provided at the other end of the connecting column, and a spur rack 805 is slidably provided on the fixing frame 3. A lower inclined block 806 is provided at the lower end of the spur rack 805. The upper inclined block 901 cooperates with the lower inclined block 806, and the spur rack 805 meshes with the arc-shaped rack 804. The rotation of the arc-shaped rack 804 drives the straight rack 805 to slide upward, thereby driving the lower inclined block 806 to move upward. The welding head 905 and the clamping mechanism move toward the position of the transverse steel bar 14 under the cooperation of the lower inclined block 806 and the upper inclined block 901. The clamping mechanism contacts the transverse steel bar 14 before the welding head 905. The clamping mechanism and the fixing frame 3 cooperate to limit the transverse steel bar 14, so that the relative position of the transverse steel bar 14 and the longitudinal steel bar 13 is fixed, and the welding head 905 welds the steel bars.

[0044] Further, the clamping mechanism includes a push plate 904, which is fixedly arranged on the connecting column, and a spring telescopic rod 906 is provided on the push plate 904, and a clamping plate 907 is provided at the end of the spring telescopic rod 906, and the end of the clamping plate 907 is a ramp. The upper inclined block 901 pushes the connecting column to move, thereby pushing the push plate 904 to move toward the transverse steel bar 14, and the end of the clamping plate 907 contacts the transverse steel bar 14. Under the action of the ramp, the transverse steel bar 14 can continue to move downward until it contacts the longitudinal steel bar 13, and at this time, the welding head 905 welds the transverse steel bar 14 and the longitudinal steel bar 13. After welding is completed, the fixing frame 3 rises, the transverse steel bar 3 is separated from the fixing frame 3, the gate 801 returns to its original position under the action of the torque spring 802, and the lower inclined block 806 and the upper inclined block 901 return to their original positions, and the welding head 905 and the clamping mechanism return to their original positions under the action of the reset spring 903.

[0045] The other structures are the same as those of the second embodiment.

[0046] Embodiment 4, on the basis of embodiment 3, as Figure 4 As shown, a welding method for steel mesh welding equipment for building construction comprises the following steps:

[0047] S1, set up welding equipment and place longitudinal steel bars 13 under the fixed frame 3; lay the guide rails 12 and install the movable plate 11 and the fixed frame 3;

[0048] S2, insert the transverse steel bar 14 from the opening on the lifting frame 2, so that the transverse steel bar 14 enters the steel bar channel 4; directly insert the entire transverse steel bar 14 from the opening into the steel bar channel 4, and weld one transverse steel bar 14 to multiple longitudinal steel bars 13 at the same time;

[0049] S3, the transverse steel bar 14 pushes the guide gate 6 open under the action of its own gravity and reaches the first turning point of the steel bar channel 4; and under the action of the protrusion 5, the transverse steel bar 14 can only pass through the guide gate 6 in one direction;

[0050] S4, the electric push rod 1 is started, so that the lifting frame 2 drives the fixing frame 3 to descend, the longitudinal steel bar 13 contacts the support plate 703 and lifts the top plate 704 through the push rod 702, and the top plate 704 pushes the transverse steel bar 14 to rise and move obliquely along the steel bar channel 4 to reach the second turning point of the steel bar channel 4; in this process, the relative positions of the longitudinal steel bar 13 and the fixing frame 3 are adjusted, and the transverse steel bar 14 is pushed to the second turning point.

[0051] S5, the transverse steel bar 14 contacts the gate 801 at the second turning point of the steel bar channel 4, and the transverse steel bar 14 pushes the gate 801 to rotate under the action of its own gravity. At this time, the arc rack 804 contacts the contact switch 803, and the contact switch 803 controls the electric push rod 1 to stop moving; at this time, the relative position of the longitudinal steel bar 13 and the fixing frame 3 is fixed;

[0052] S6, when the gate 801 rotates, the arc-shaped rack 804 drives the straight rack 805 to move upward, and the upper inclined block 901 cooperates with the lower inclined block 806 to move the welding assembly 9; the transverse steel bar 14 moves the welding assembly 9 toward the transverse steel bar position during the downward movement;

[0053] S7, when the welding assembly 9 moves, the end ramp of the clamping plate 907 squeezes the transverse steel bar 14, so that the transverse steel bar 14 contacts the longitudinal steel bar 13, and the welding head 905 welds the transverse steel bar 14 and the longitudinal steel bar 13; the end ramp of the clamping plate 907 and the fixing frame 3 cooperate to limit the transverse steel bar 14, so that the relative position of the transverse steel bar 14 and the fixing frame 3 is fixed, thereby ensuring that the welding point position between the transverse steel bar 14 and the longitudinal steel bar 13 is uniformly stressed, and when the transverse steel bar 14 falls to contact the longitudinal steel bar 13, the welding head 905 welds the transverse steel bar 14 and the longitudinal steel bar 13;

[0054] S8, after welding is completed, the transverse reinforcement 14 is separated from the gate 801, the gate 801 returns to its original position under the action of the torque spring 802, and the welding head 905 and the clamping plate 907 return to their original positions under the action of the return spring 903;

[0055] S9, the movable plate 11 moves on the guide rail 12, and steps S2 to S8 are repeated until the welding of all the transverse steel bars 14 is completed.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel mesh welding device for construction, characterized in that: The mobile lifting frame comprises a fixed frame (3) on which the mobile lifting frame is provided, an N-shaped steel bar channel (4) being provided in the fixed frame (3), a pushing-up component (7) corresponding to a first turning point of the steel bar channel (4) being provided on the fixed frame (3), a start-stop component (8) corresponding to a second turning point of the steel bar channel (4) being provided on the fixed frame (3), and at least one welding component (9) being provided at the outlet of the steel bar channel (4); A guide door (6) is provided at the first turning point of the steel bar passage (4), the guide door (6) is hinged to the fixing frame (3), a torsion spring is provided between the guide door (6) and the fixing frame (3), a convex block (5) is provided on the inner wall of the steel bar passage (4), and the convex block (5) corresponds to the movable end of the guide door (6); The push-up assembly (7) comprises a fixed hole plate (701), the fixed hole plate (701) is fixedly arranged on both sides of the fixed frame (3), a top rod (702) is slidably arranged on the fixed hole plate (701), the upper end of the top rod (702) is provided with a top plate (704) corresponding to the first turning point of the steel bar channel (4), and the lower end of the top rod (702) is provided with a support plate (703) corresponding to the longitudinal steel bar (13), and the support plate (703) is located below the fixed frame (3); The start-stop assembly (8) comprises an integrally connected gate (801) and an arc-shaped rack (804); the gate (801) is located at the second turning point of the steel bar channel (4); the connection between the gate (801) and the arc-shaped rack (804) is rotatably connected to a fixed frame (3) via a rotating shaft; a torque spring (802) is provided on the rotating shaft; a contact switch (803) is provided on the fixed frame (3); and the arc-shaped rack (804) cooperates with the contact switch (803).

2. The steel grid welding equipment for construction according to claim 1 is characterized in that: The mobile lifting frame comprises a longitudinally arranged guide rail (12) and a lifting frame (2), a moving plate (11) being slidably provided on the guide rail (12), the moving plate (11) being connected to the lifting frame (2) via an electric push rod (1), and a fixed frame (3) being fixedly arranged on the lifting frame (2).

3. The steel grid welding equipment for construction according to claim 2 is characterized in that: The lifting frame (2) is provided with an opening which communicates with the entrance of the steel bar passage (4).

4. The steel mesh welding equipment for construction according to claim 3 is characterized in that: The welding assembly (9) comprises a connecting plate (902), the connecting plate (902) being connected to the fixing frame (3) via a return spring (903), a connecting column being provided on the connecting plate (902), and a welding head (905) and a clamping mechanism being provided at one end of the connecting column.

5. The steel grid welding equipment for construction according to claim 4 is characterized in that: An upper inclined block (901) is provided at the other end of the connecting column, a slanted rack (805) is slidably provided on the fixing frame (3), a lower inclined block (806) is provided at the lower end of the slanted rack (805), the upper inclined block (901) cooperates with the lower inclined block (806), and the slanted rack (805) meshes with the arc-shaped rack (804).

6. The steel mesh welding equipment for construction according to claim 5, characterized in that: The clamping mechanism comprises a push plate (904), the push plate (904) is fixedly arranged on the connecting column, and a spring telescopic rod (906) is provided on the push plate (904), a clamping plate (907) is provided at the end of the spring telescopic rod (906), and the end of the clamping plate (907) is a ramp.

7. A welding method for a steel bar grid welding device for construction as claimed in claim 6, characterized in that: The following steps are involved: S1, setting up welding equipment and placing longitudinal steel bars (13) under the fixing frame (3); S2, inserting the transverse steel bar (14) from the opening on the lifting frame (2) so that the transverse steel bar (14) enters the steel bar channel (4); S3, the transverse steel bar (14) pushes open the guide door (6) under the action of its own weight and reaches the first turning point of the steel bar channel (4); S4, the electric push rod (1) is started, so that the lifting frame (2) drives the fixed frame (3) to descend, the longitudinal steel bars (13) contact the support plate (703) and lift the top plate (704) through the push rod (702), and the top plate (704) pushes the transverse steel bars (14) to rise and move obliquely along the steel bar channel (4) to reach the second turning point of the steel bar channel (4); S5, the transverse steel bar (14) contacts the gate (801) at the second turning point of the steel bar channel (4), and the transverse steel bar (14) pushes the gate (801) to rotate under the action of its own weight. At this time, the arc-shaped rack (804) contacts the contact switch (803), and the contact switch (803) controls the electric push rod (1) to stop moving; S6, when the gate (801) rotates, the arc-shaped rack (804) drives the straight rack (805) to move upward, and the upper inclined block (901) cooperates with the lower inclined block (806) to move the welding assembly (9); S7, when the welding assembly (9) moves, the end ramp of the clamping plate (907) squeezes the transverse steel bar (14), so that the transverse steel bar (14) contacts the longitudinal steel bar (13), and the welding head (905) welds the transverse steel bar (14) and the longitudinal steel bar (13); S8, after welding is completed, the transverse reinforcement (14) is separated from the gate (801), the gate (801) is restored to its original position under the action of the torque spring (802), and the welding head (905) and the clamping plate (907) are restored to their original positions under the action of the return spring (903); S9, the movable plate (11) moves on the guide rail (12), and steps S2 to S8 are repeated until the welding of all transverse steel bars (14) is completed.

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