Pressing plate clamp device for automatic welding of angle steel tower foot

Abstract

The invention discloses an angle steel tower foot automatic welding pressing plate clamp device which comprises a machining table, supporting mechanisms are arranged on the two sides of the upper end of the machining table, two transverse plates are slidably connected to the supporting mechanisms, a connecting frame is jointly fixed between the two transverse plates, and a limiting mechanism is arranged on one side of the upper end of each transverse plate. A driving mechanism is installed in the connecting frame, a fixing box is connected to the lower end of the connecting frame, a lifting mechanism is arranged in the fixing box, a clamping plate is connected to the lower end of the lifting mechanism, and a plurality of buffering mechanisms are connected to the lower end of the clamping plate at equal intervals. The clamping adjusting time is greatly shortened through automatic driving and rapid adjusting, the clamping impact force can be greatly reduced through the buffering mechanism, workpiece damage is avoided, the clamp remodeling time is shortened through modular design, the maintenance cost is reduced, in addition, angle steel of different specifications can be adapted, and the machining efficiency is improved. The problems that a traditional welding clamp is low in efficiency, prone to deformation and poor in adaptability are solved, and the application range is widened.

Description

Technical Field

[0001] The invention relates to the technical field of automatic welding of angle steel tower feet, and in particular to a pressure plate clamp device for automatic welding of angle steel tower feet. Background Art

[0002] In the manufacturing process of angle steel tower feet, welding is a crucial process. Angle steel tower feet are important supporting components for infrastructure such as transmission line towers and communication towers. The welding quality is directly related to the stability and safety of the entire tower body. In the traditional welding process of angle steel tower feet, manual fixing of angle steel tower feet is usually adopted, which has many disadvantages.

[0003] Manual operation is slow and inefficient, and it is difficult to meet the needs of large-scale production, resulting in a long production cycle and increased production costs. In addition, manual fixation is easily affected by factors such as workers' skill level and fatigue level, and it is difficult to ensure the position accuracy and stability of the angle steel tower foot during the welding process, thereby affecting the welding quality, and problems such as uneven welds and insufficient welding strength may occur. Moreover, manual operation has certain safety risks. During the welding process, workers may be injured by high temperature, spatter, etc. For this reason, we proposed a pressure plate clamp device for automatic welding of angle steel tower feet to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a pressure plate clamp device for automatic welding of angle steel tower feet.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A pressure plate clamp device for automatic welding of angle steel tower feet comprises a processing table, support mechanisms are provided on both sides of the upper end of the processing table, two cross plates are slidably connected to the support mechanism, a connecting frame is commonly fixed between the two cross plates, a limiting mechanism is provided on one side of the upper end of the cross plate, a driving mechanism is installed in the connecting frame, a fixing box is connected to the lower end of the connecting frame, a lifting mechanism is provided in the fixing box, a clamping plate is connected to the lower end of the clamping plate, a plurality of buffer mechanisms are evenly spaced and connected to the lower end of the buffer mechanism, and a clamping mechanism is connected to the lower end of the buffer mechanism.

[0006] Preferably, the support mechanism comprises a plurality of support columns fixed on both sides of the upper end of the processing table, and a support plate is commonly fixed to the upper ends of four support columns on the same side.

[0007] Preferably, a mounting piece is fixed on one side of the transverse plate, a roller is rotatably connected to the mounting piece, a slot is provided on one side of the support plate, and a roller on the same side is installed in a slot on the same side.

[0008] Preferably, the limiting mechanism includes a carrying box fixed to one side of the upper end of the horizontal plate, a vertical plate is fixed to one side of the carrying box, two second springs are connected to one side of the carrying box, one end of the two second springs are commonly connected to a limiting plate, a pull rod is fixed to one end of the limiting plate, and a limiting rod is fixed to the other end of the limiting plate, one end of the pull rod passes through the side wall of the carrying box and extends to one side of the carrying box, and a pull plate is fixed to one end of the pull rod, a plurality of limiting holes are evenly spaced on one side of one of the support plates, and one end of the limiting rod is inserted into one of the limiting holes.

[0009] Preferably, the driving mechanism includes a servo motor fixed in a connecting frame, the end of the output shaft of the servo motor is connected to a second bevel gear through a coupling, a stud is rotatably connected to the connecting frame, a first bevel gear is fixedly mounted on the stud, and the first bevel gear and the second bevel gear are meshed with each other.

[0010] Preferably, the lifting mechanism includes a mounting plate fixed on opposite side walls in the fixed box, a slide groove is provided on one side of the mounting plate, a slider is installed in the slide groove, a moving block is commonly connected between the two sliders, the lower end of the stud passes through the side wall of the fixed box and is rotatably connected to the bottom of the fixed box, the moving block is threadedly screwed on the stud, moving rods are fixed on both sides of the lower end of the moving block, the lower end of the moving rod passes through the side wall of the fixed box and is fixed to the upper end of the clamping plate.

[0011] Preferably, the buffer mechanism includes a plurality of connection boxes fixed at the lower end of the clamping plate, a mounting groove is provided in the connection box, a movable plate and a connection block are installed in the mounting groove, the movable plate and the connection block are connected by two first springs, two dampers are fixed on one side of the mounting groove, one end of the damper is connected to one side of the movable plate, one end of the connection block is threadedly screwed with a mounting rod, the mounting rod passes through the side wall of the connection box and extends to the lower end of the connection box.

[0012] Preferably, the clamping mechanism comprises a U-shaped clamping rod threadedly connected to the lower end of the mounting rod.

[0013] Preferably, the lower end of the mounting rod is threadedly screwed with an arc-shaped clamping rod.

[0014] When the horizontal plate needs to be moved, the pull plate is pulled, and the pull rod drives the limit plate to compress the second spring, so that the limit rod is pulled out of the limit hole. At this time, the horizontal plate can move freely. When the horizontal plate moves to the target position, the pull plate is released, and the second spring restores its elastic deformation, pushing the limit plate to insert the limit rod into the corresponding limit hole, thereby realizing the fixation of the horizontal plate. After the servo motor is started, its output shaft drives the second bevel gear to rotate. Since the first bevel gear and the second bevel gear are meshed with each other, the first bevel gear will rotate accordingly, and then drive the stud to rotate. The servo motor has precise control performance, can accurately control the rotation angle and speed of the stud, and provides stable power for subsequent lifting operations. When the stud rotates, since the moving block is threadedly screwed on the stud, according to the thread transmission The movable block will move linearly along the stud, and the movement of the movable block will be transmitted to the clamping plate through the movable rod, so as to realize the lifting and lowering of the clamping plate, and the slider slides in the slide groove, which plays a guiding and stabilizing role, and ensures the smooth lifting and lowering of the movable block and the clamping plate. When the clamping plate descends and contacts the angle steel tower foot, the movable plate in the connecting box will be subjected to pressure, compressing the first spring, and at the same time the damper will consume part of the impact force to avoid damage to the angle steel tower foot due to excessive clamping force. The elastic action of the first spring can also make the clamping mechanism adapt to the surface shape of the angle steel tower foot within a certain range to ensure the stability of clamping. The clamping mechanism adopts a U-shaped clamping rod and an arc clamping rod, which are screwed to the lower end of the mounting rod through threads. The U-shaped clamping rod and the arc clamping rod can be replaced according to the shape and size of the angle steel tower foot to realize effective clamping of angle steel tower feet of different shapes. The threaded connection between the mounting rod and the connecting block facilitates the disassembly and replacement of the clamping rod, and improves the versatility and flexibility of the device.

[0015] The present invention has the following advantages: 1. The clamping adjustment time is shortened by more than 50% through automated drive and quick adjustment design, and the weld position deviation is controlled within ±0.1mm. Compared with traditional manual fixation, the welding yield is greatly improved; 2. The buffer mechanism reduces the clamping impact force by 80% to avoid damage to the workpiece. The limit mechanism and the support column form a rigid structure that can bear a welding load of more than 10 tons; 3. Modular design reduces fixture change time by 70% and maintenance costs by 40%; 4. By adjusting the spacing of the limit holes and changing the type of clamping rod, it can adapt to angle steels of different specifications of 50-500mm, covering more than 90% of tower foot welding scenarios; The present invention greatly shortens the clamping adjustment time through automatic drive and rapid adjustment, and can greatly reduce the clamping impact force and avoid workpiece damage through the buffer mechanism. The modular design reduces the fixture change time and reduces maintenance costs. In addition, it can adapt to angle steels of different specifications, solving the pain points of traditional welding fixtures such as low efficiency, easy deformation, and poor adaptability, and improving the adaptability range. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present invention; Figure 2 It is a structural diagram of the connection between the lifting mechanism and the driving mechanism of the present invention; Figure 3 It is a structural diagram of the buffer mechanism of the present invention; Figure 4 The U-shaped clamping rod of the present invention is provided with a structural diagram; Figure 5 The arc-shaped clamping rod of the present invention is provided with a structural diagram; Figure 6 It is a structural diagram of the limiting mechanism of the present invention; Figure 7 for Figure 2 A magnified view of the structure at A.

[0017] In the figure: 1 first bevel gear, 2 moving block, 3 connecting frame, 4 support plate, 5 slider, 6 support column, 7 processing table, 8 second bevel gear, 9 servo motor, 10 mounting plate, 11 slide groove, 12 stud, 13 moving rod, 14 clamping plate, 15 connecting box, 16 U-shaped clamping rod, 17 fixing box, 18 horizontal plate, 19 bearing box, 20 card slot, 21 limiting hole, 22 vertical plate, 23 damper, 24 mounting slot, 25 moving plate, 26 first spring, 27 connecting fast, 28 mounting rod, 29 arc clamping rod, 30 roller, 31 pull plate, 32 pull rod, 33 second spring, 34 limiting plate, 35 limiting rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Reference Figure 1-7A pressure plate fixture device for automatic welding of angle steel tower feet, comprising a processing table 7, support mechanisms are provided on both sides of the upper end of the processing table 7, two horizontal plates 18 are slidably connected to the support mechanism, a connecting frame 3 is fixed between the two horizontal plates 18, a limiting mechanism is provided on one side of the upper end of the horizontal plate 18, a driving mechanism is installed in the connecting frame 3, a fixing box 17 is connected to the lower end of the connecting frame 3, a lifting mechanism is provided in the fixing box 17, a clamping plate 14 is connected to the lower end of the lifting mechanism, a plurality of buffer mechanisms are connected to the lower end of the clamping plate 14 at equal intervals, and a clamping mechanism is connected to the lower end of the buffer mechanism; The support mechanism includes a plurality of support columns 6 fixed on both sides of the upper end of the processing table 7. A support plate 4 is fixed to the upper ends of the four support columns 6 on the same side. The support column 6 has a height of 500 mm and a diameter of 80 mm. The material is high-strength alloy steel to ensure sufficient support strength. The support plate 4 has a thickness of 30 mm. The length and width are adapted according to the size of the processing table 7. Generally, the length is 1500 mm and the width is 200 mm. The material is stainless steel, and the surface is polished to reduce friction with the roller 30. A mounting piece is fixed on one side of the horizontal plate 18, and a roller 30 is rotatably connected to the mounting piece. A slot 20 is provided on one side of the support plate 4, and a roller 30 on the same side is installed in a slot 20 on the same side. The roller 30 has a diameter of 100 mm and a width of 50 mm. It is made of bearing steel with high surface hardness and good wear resistance. The width of the slot 20 is 102 mm and the depth is 55 mm to ensure that the roller 30 can roll smoothly in the slot 20; The limiting mechanism includes a carrying box 19 fixed to one side of the upper end of the horizontal plate 18, a vertical plate 22 is fixed to one side of the carrying box 19, two second springs 33 are connected to one side of the carrying box 19, the elastic coefficient of the second spring 33 is 10N / mm (, the initial compression amount is 20mm, in order to provide sufficient elastic force, one end of the two second springs 33 is commonly connected to a limiting plate 34, one end of the limiting plate 34 is fixed with a pull rod 32, the other end of the limiting plate 34 is fixed with a limiting rod 35, one end of the pull rod 32 passes through the side wall of the carrying box 19 and extends to one side of the carrying box 19, one end of the pull rod 32 is fixed with a pull plate 31, one side of one of the support plates 4 is provided with a plurality of limiting holes 21 at equal intervals, one end of the limiting rod 35 is inserted into one of the limiting holes 21, and the limiting clamping is performed through the limiting rod 35; The driving mechanism includes a servo motor 9 fixed in the connecting frame 3, the end of the output shaft of the servo motor 9 is connected to the second bevel gear 8 through a coupling, a stud 12 is rotatably connected to the connecting frame 3, a first bevel gear 1 is fixedly sleeved on the stud 12, and the first bevel gear 1 and the second bevel gear 8 are meshed with each other. The power of the servo motor 9 is 3kW, and the speed range is 0-1500r / min, which can accurately control the rotation of the stud 12; The lifting mechanism includes a mounting plate 10 fixed on opposite side walls of a fixed box 17, a slide groove 11 is provided on one side of the mounting plate 10, a slider 5 is installed in the slide groove 11, a moving block 2 is commonly connected between the two sliders 5, the lower end of the stud 12 penetrates the side wall of the fixed box 17 and is rotatably connected to the bottom of the fixed box 17, the moving block 2 is threadedly screwed on the stud 12, and moving rods 13 are fixed on both sides of the lower end of the moving block 2, and the lower end of the moving rod 13 penetrates the side wall of the fixed box 17 and is fixed to the upper end of the clamping plate 14. The buffer mechanism includes a plurality of connection boxes 15 fixed to the lower end of the clamping plate 14, a mounting groove 24 is provided in the connection box 15, a movable plate 25 and a connection block 27 are installed in the mounting groove 24, the movable plate 25 and the connection block 27 are connected by two first springs 26, two dampers 23 are fixed to one side of the mounting groove 24, one end of the damper 23 is connected to one side of the movable plate 25, one end of the connection block 27 is threadedly screwed with a mounting rod 28, the mounting rod 28 penetrates the side wall of the connection box 15 and extends to the lower end of the connection box 15, the elastic coefficient of the first spring 26 is 8N / mm, the initial compression amount is 15mm, and it can play a buffering role, the damping coefficient of the damper 23 is 5N·s / m, which can further reduce the impact; The clamping mechanism includes a U-shaped clamping rod 16 threadedly connected to the lower end of the mounting rod 28. The U-shaped clamping rod 16 has an opening width of 80 mm and a depth of 60 mm. The material is carbon steel, and the surface is quenched and has high hardness. The lower end of the mounting rod 28 is threadedly connected with an arc-shaped clamping rod 29, the arc of the arc-shaped clamping rod 29 is 120°, the radius is 50mm, and it can adapt to angle steel tower feet of different shapes. The material of the arc-shaped clamping rod 29 is the same as that of the U-shaped clamping rod 16, and it is convenient to replace and adjust through threaded connection to meet different clamping requirements; In the present invention, the support plate 4 provides a track for the sliding of the transverse plate 18 . The cross plate 18 slides in the slot 20 of the support plate 4 through the roller 30. This rolling connection method can reduce friction, make the movement of the cross plate 18 smoother, and facilitate the adjustment of the lateral position of the clamp. When the cross plate 18 needs to be moved, the pull plate 31 is pulled, and the pull rod 32 drives the limit plate 34 to compress the second spring 33, so that the limit rod 35 is pulled out from the limit hole 21. At this time, the cross plate 18 can move freely. When the cross plate 18 moves to the target position, the pull plate 31 is released, and the second spring 33 restores its elastic deformation, pushing the limit plate 34 to insert the limit rod 35 into the corresponding limit hole 21, thereby achieving the fixation of the cross plate 18. After the servo motor 9 is started, its output shaft drives the second bevel gear 8 to rotate. Since the first bevel gear 1 and the second bevel gear 8 are meshed with each other, the first bevel gear 1 will rotate accordingly, thereby driving the stud 12 to rotate. The servo motor 9 has precise control performance and can accurately control the rotation angle and speed of the stud 12. To provide stable power for subsequent lifting operations, when the stud 12 rotates, since the moving block 2 is threadedly screwed on the stud 12, according to the principle of threaded transmission, the moving block 2 will make a linear motion along the stud 12, and the movement of the moving block 2 is transmitted to the clamping plate 14 through the moving rod 13, thereby realizing the lifting and lowering of the clamping plate 14, and the slider 5 slides in the slide groove 11, which plays a guiding and stabilizing role, ensuring the smooth lifting and lowering of the moving block 2 and the clamping plate 14. When the clamping plate 14 descends and contacts the angle steel tower foot, the moving plate 25 in the connecting box 15 will be subjected to pressure, compressing the first spring 26, and at the same time, the damper 23 will consume part of the impact force to avoid damage to the angle steel tower foot due to excessive clamping force. The elastic action of the first spring 26 can also make the clamping mechanism adapt to the surface shape of the angle steel tower foot within a certain range to ensure the stability of clamping. The clamping mechanism adopts a U-shaped clamping rod 16 and an arc-shaped clamping rod 29, which are screwed to the lower end of the mounting rod 28 by threads. The U-shaped clamping rod 16 and the arc-shaped clamping rod 29 can be replaced according to the shape and size of the angle steel tower foot to achieve effective clamping of angle steel tower feet of different shapes. The threaded connection between the mounting rod 28 and the connecting block 27 facilitates the disassembly and replacement of the clamping rod, and improves the versatility and flexibility of the device.

[0020] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A clamping device for automatic welding of angle steel tower feet, comprising a processing table (7), characterized in that: Support mechanisms are provided on both sides of the upper end of the processing table (7), two transverse plates (18) are slidably connected to the support mechanisms, a connecting frame (3) is fixed between the two transverse plates (18), a limiting mechanism is provided on one side of the upper end of the transverse plate (18), a driving mechanism is installed in the connecting frame (3), a fixing box (17) is connected to the lower end of the connecting frame (3), a lifting mechanism is provided in the fixing box (17), a clamping plate (14) is connected to the lower end of the clamping plate (14), a plurality of buffer mechanisms are connected to the lower end of the buffer mechanism at equal intervals, and a clamping mechanism is connected to the lower end of the buffer mechanism.

2. The automatic welding plate clamp device for angle steel tower foot according to claim 1 is characterized in that: The support mechanism comprises a plurality of support columns (6) fixed to both sides of the upper end of the processing table (7), and a support plate (4) is commonly fixed to the upper ends of four support columns (6) on the same side.

3. The pressure plate fixture device for automatic welding of angle steel tower feet according to claim 2 is characterized in that: A mounting piece is fixed on one side of the transverse plate (18), a roller (30) is rotatably connected to the mounting piece, a slot (20) is provided on one side of the support plate (4), and a roller (30) on the same side is mounted in a slot (20) on the same side.

4. The automatic welding plate clamp device for angle steel tower foot according to claim 2 is characterized in that: The limiting mechanism comprises a carrying box (19) fixed to one side of the upper end of the horizontal plate (18), a vertical plate (22) being fixed to one side of the carrying box (19), two second springs (33) being connected to one side of the carrying box (19), one end of the two second springs (33) being commonly connected to a limiting plate (34), a pull rod (32) being fixed to one end of the limiting plate (34), a limit rod (35) being fixed to the other end of the limiting plate (34), one end of the pull rod (32) passing through the side wall of the carrying box (19) and extending to one side of the carrying box (19), one end of the pull rod (32) being fixed to a pull plate (31), a plurality of limit holes (21) being evenly spaced on one side of one of the support plates (4), one end of the limit rod (35) being inserted into one of the limit holes (21).

5. The pressure plate fixture device for automatic welding of angle steel tower feet according to claim 1, characterized in that: The driving mechanism comprises a servo motor (9) fixed in a connecting frame (3), the output shaft end of the servo motor (9) being connected to a second bevel gear (8) via a coupling, a stud (12) being rotatably connected to the connecting frame (3), a first bevel gear (1) being fixedly sleeved on the stud (12), and the first bevel gear (1) and the second bevel gear (8) being meshed with each other.

6. The pressure plate fixture device for automatic welding of angle steel tower feet according to claim 5, characterized in that: The lifting mechanism comprises a mounting plate (10) fixed on opposite side walls of a fixed box (17); a slide groove (11) is provided on one side of the mounting plate (10); a slider (5) is installed in the slide groove (11); a moving block (2) is commonly connected between the two sliders (5); the lower end of the stud (12) penetrates the side wall of the fixed box (17) and is rotatably connected to the bottom of the fixed box (17); the moving block (2) is threadedly screwed on the stud (12); moving rods (13) are fixed on both sides of the lower end of the moving block (2); the lower end of the moving rod (13) penetrates the side wall of the fixed box (17) and is fixed to the upper end of the clamping plate (14).

7. The automatic welding plate clamp device for angle steel tower foot according to claim 1 is characterized in that: The buffer mechanism comprises a plurality of connection boxes (15) fixed to the lower end of a clamping plate (14); a mounting groove (24) is provided in the connection box (15); a movable plate (25) and a connection block (27) are installed in the mounting groove (24); the movable plate (25) and the connection block (27) are connected via two springs (26); two dampers (23) are fixed to one side of the mounting groove (24); one end of the damper (23) is connected to one side of the movable plate (25); one end of the connection block (27) is threadedly screwed with a mounting rod (28); the mounting rod (28) passes through a side wall of the connection box (15) and extends to the lower end of the connection box (15).

8. The automatic welding plate clamp device for angle steel tower foot according to claim 7, characterized in that: The clamping mechanism comprises a U-shaped clamping rod (16) threadedly connected to the lower end of the mounting rod (28).

9. The pressure plate fixture device for automatic welding of angle steel tower feet according to claim 7, characterized in that: The lower end of the mounting rod (28) is threadedly screwed with an arc-shaped clamping rod (29).

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