Angle adjusting device for welding construction parts of engineering machines

Abstract

The utility model discloses an angle adjusting device for engineering machinery structural member welding, including bottom plate and the support leg of fixed connection at its top, support leg top fixedly connected with outer frame, the middle part of outer frame is equipped with the rectangular mouth, the both sides middle part of rectangular mouth is provided with the rotary seat, it still includes: the turnover mechanism, the turnover mechanism includes the inner frame rotation connection between rotary seat, the outer end pivot of inner frame is fixedly connected with first gear, the top of first gear is engaged with upper buckle, the both ends sliding connection of upper buckle has the slide bar, the middle part sliding connection of inner frame has the moving plate, the rear side of moving plate is equipped with the insertion hole, the insertion hole inside screw thread connection has the fixed peg, the angle adjusting device for engineering machinery structural member welding disclosed by the utility model has realized all -round nimble posture and firm locking, the effect of obviously promotion welding quality, precision and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mechanical welding technology, and in particular to an angle adjustment device for welding structural components of engineering machinery. Background Technology

[0002] The structural components of construction machinery often have complex welds, mostly three-dimensional welds. During welding, various angle adjustment devices must be used to adjust the weld to the most ideal welding position. The main frame, which is the foundation structure for mounting all components, requires extremely high strength and rigidity to withstand various stresses during operation and transportation. It is usually made of high-strength steel plates and is either an integral or articulated frame.

[0003] However, existing welding equipment has difficulty adjusting the angle when welding the main frame. It can only perform welding at a limited angle during the welding process and requires active adjustment of the position to perform full welding. The limited welding angle will directly lead to unstable weld quality and reduced overall strength, posing certain safety hazards in subsequent use. For example, in actual welding production, our mini excavator main frame has a large number of multi-dimensional welds due to its complex structure. However, the existing fixed welding fixtures cannot be flexibly rotated, which means that when welding the corner welds between two areas in the welding diagram, the welding torch cannot enter at the optimal angle. Operators have to adopt non-standard side welding and overhead welding postures, which is not only labor-intensive and dangerous, but also directly leads to insufficient penetration and defects such as undercut and slag inclusions at the weld toe. Utility Model Content

[0004] This utility model discloses an angle adjustment device for welding structural components of engineering machinery, which aims to solve the technical problems of existing welding devices that are difficult to adjust the angle when welding the main frame, can only perform welding at a limited angle during the welding process, and need to actively adjust the position to perform full welding. The limited welding angle will directly lead to unstable weld quality, reduced overall strength, and certain safety hazards in subsequent use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An angle adjustment device for welding structural components of engineering machinery includes a base plate and a support leg fixedly connected to its top. An outer frame is fixedly connected to the top of the support leg. A rectangular opening is provided in the middle of the outer frame, and rotating seats are provided in the middle of the left and right sides of the rectangular opening. The device further includes: a flipping mechanism: the flipping mechanism includes an inner frame rotatably connected between the rotating seats. A first gear is fixedly connected to the outer end of the inner frame at a rotating shaft. An upper buckle meshes with the top of the first gear. Sliding rods are slidably connected to the left and right ends of the upper buckle. A movable plate is slidably connected to the middle of the inner frame. An insertion hole is provided on the rear side of the movable plate, and a fixing bolt is threaded into the insertion hole; and an angle adjustment mechanism: the angle adjustment mechanism is fixedly connected to the top of the movable plate.

[0006] By adopting the above technical solution, the problem of limited welding angle can be effectively solved. The workpiece is fixed on a movable plate that can slide back and forth, and the movable plate is installed in an inner frame that can rotate 360 ​​degrees horizontally. During operation, the welder can first loosen the upper buckle, allowing the inner frame to rotate freely with the workpiece, adjusting the weld in any direction to the most ideal flat or horizontal welding position. Then, the movable plate is slid to make fine adjustments and positioning, and finally, the upper buckle and fixing bolts are locked to secure it. This design ensures that the weld can be completed at the optimal process angle, fundamentally eliminating quality defects such as porosity and slag inclusion caused by awkward posture, significantly improving the uniformity of weld penetration and the overall structural strength, thereby eliminating safety hazards caused by welding quality problems. At the same time, the device avoids repeated lifting of workpieces, greatly improving production efficiency.

[0007] As a further embodiment of this utility model: the angle adjustment mechanism includes a circular groove formed on the top of the movable plate, a second gear is rotatably connected inside the circular groove, a fixed plate is fixedly connected to the top of the second gear, a clamp is fixedly connected to the top of the fixed plate, a rack block is meshed on the front side of the second gear, and a lead screw is rotatably connected to the front side of the rack block.

[0008] By adopting the above technical solution, multi-angle weld alignment can be achieved when fixing the workpiece. The precise alignment of the weld joint is completed by fine-tuning the fixing plate, and then the screw is tightened to push the rack block to mesh and lock with the second gear. This not only ensures the flexible adjustment capability of the full 360-degree circumference angle, but also ensures that absolutely reliable rigid fixation can be obtained after alignment at any angle. This allows welds of different orientations on complex structural parts to be accurately aligned and firmly locked at one time, solving the process problems of repeated adjustment and unstable positioning during multi-angle welding.

[0009] In summary, this application includes at least one of the following beneficial technical effects: 1. Enables welding angle adjustment during the welding process. Through the fully rotatable inner frame and the sliding plate, the weld can be easily adjusted to the optimal welding position, completely eliminating defects such as porosity and slag inclusion caused by awkward postures such as overhead welding, significantly improving welding quality and strength, while reducing the number of workpiece flips and improving production efficiency.

[0010] 2. Enables precise fine-tuning and secure locking of workpieces at any angle, ensuring accurate alignment of welds at multiple angles, solving the problems of repeated adjustments and unstable positioning, and providing reliable assurance for the welding quality of complex structural parts.

[0011] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an angle adjustment device for welding engineering machinery structural components proposed in this utility model.

[0013] Figure 2 This is a schematic diagram of the flipping mechanism of an angle adjustment device for welding structural components of engineering machinery proposed in this utility model.

[0014] Figure 3 This is a top view of the flipping mechanism of an angle adjustment device for welding structural components of engineering machinery proposed in this utility model.

[0015] Figure 4 This is a schematic diagram of the angle adjustment structure of an angle adjustment device for welding engineering machinery structural components proposed in this utility model.

[0016] Figure 5 This is a diagram showing the second gear of an angle adjustment device for welding structural components of engineering machinery, as proposed in this utility model.

[0017] In the attached diagram: 1. Base plate; 2. Support leg; 3. Outer frame; 4. Rectangular opening; 5. Rotating seat; 6. Inner frame; 7. First gear; 8. Upper buckle; 9. Slide rod; 10. Moving plate; 11. Insertion hole; 12. Fixing bolt; 13. Circular groove; 14. Second gear; 15. Fixing plate; 16. Clamp; 17. Rack block; 18. Lead screw. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figure 1 , Figure 2 and Figure 3 An angle adjustment device for welding structural components of engineering machinery includes a base plate 1 and a support leg 2 fixedly connected to its top. An outer frame 3 is fixedly connected to the top of the support leg 2. A rectangular opening 4 is opened in the middle of the outer frame 3. Rotating seats 5 are arranged in the middle of the left and right sides of the rectangular opening 4. The device also includes: a flipping mechanism: the flipping mechanism includes an inner frame 6 rotatably connected between the rotating seats 5. A first gear 7 is fixedly connected to the outer end of the inner frame 6 at the pivot. An upper buckle 8 is engaged at the top of the first gear 7. Sliding rods 9 are slidably connected to the left and right ends of the upper buckle 8. A moving plate 10 is slidably connected to the middle of the inner frame 6. An insertion hole 11 is opened on the rear side of the moving plate 10. A fixing bolt 12 is threaded inside the insertion hole 11. An angle adjustment mechanism is fixedly connected to the top of the moving plate 10.

[0020] Specifically, the workpiece is rotated and positioned at a large angle through the engagement of the first gear 7 and the upper buckle 8. During operation, the upper buckle 8 is released to disengage from the first gear 7, allowing the inner frame 6 to be manually driven to rotate 360 ​​degrees around the rotating seat 5 as the axis. This adjusts the weld seams of the workpiece in all directions to the optimal welding position. After rotation, the upper buckle 8 is locked and engaged with the first gear 7 for fixation. Simultaneously, the welding distance can be adjusted by sliding the movable plate 10, and the movable plate 10 is positioned by inserting the fixing bolt 12 into the insertion hole 11, ensuring the stability of the workpiece during the welding process.

[0021] The inner frame 6 is rotatably connected to the inside of the rectangular opening 4 via the left and right end pivots. The inner side of the inner frame 6 is provided with a sliding groove. The movable plate 10 is slidably connected between the inner frame 6 via the front and rear extension blocks. This structural design allows the movable plate 10 to slide smoothly along the sliding groove, providing a reliable guiding guarantee for the precise adjustment of the welding distance.

[0022] The first gear 7 is fixedly connected to the outer end of the inner frame 6 at the pivot. The bottom of the inner side of the upper buckle 8 is provided with a tooth block corresponding to the first gear 7. The bottom end of the slide rod 9 is fixedly connected to the outer end of the rectangular opening 4. The upper buckle 8 achieves lifting and lowering movement through the slide rod 9, so that it can quickly mesh or separate from the first gear 7, ensuring the reliability of the flipping mechanism locking.

[0023] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 In a preferred embodiment, the angle adjustment mechanism includes a circular groove 13 formed on the top of the movable plate 10, a second gear 14 rotatably connected inside the circular groove 13, a fixed plate 15 fixedly connected to the top of the second gear 14, a clamp 16 fixedly connected to the top of the fixed plate 15, a rack block 17 meshing with the front side of the second gear 14, and a lead screw 18 rotatably connected to the front side of the rack block 17.

[0024] Specifically, the workpiece's micro-angle adjustment is achieved through the precise meshing of the second gear 14 and the rack block 17. During operation, the worker manually rotates the fixed plate 15, causing the second gear 14 to rotate within the circular groove 13, allowing the workpiece to be precisely adjusted around its axis. This ensures that the weld bevel angle and butt joint clearance achieve optimal fit. After alignment, the rotating screw 18 pushes the rack block 17 forward, causing it to firmly mesh with the second gear 14. The self-locking characteristic of the gear and rack ensures reliable angle locking, providing precise angle assurance for high-quality welding.

[0025] The second gear 14 is rotatably connected to the middle of the moving plate 10 via a bottom pivot. The bottom of the fixed plate 15 is slightly higher than the top of the moving plate 10. The clamp 16 is a fixed structure with a clamping effect. This layout provides ample installation space for the workpiece and ensures that the second gear 14 will not interfere with the moving plate 10 when it rotates.

[0026] The circular groove 13 has a threaded groove on the front side corresponding to the lead screw 18. The lead screw 18 is threaded inside the threaded groove. The rack block 17 is slidably connected inside the moving plate 10 through the front limiting rod. This transmission structure can convert the rotational motion of the lead screw 18 into the linear motion of the rack block 17, thereby achieving precise feeding.

[0027] Reference Figure 1 and Figure 3 In a preferred embodiment, there are two outer frames 3, which are symmetrically fixed to the top of the base plate 1 by support legs 2. The top rear side of the rectangular opening 4 is provided with a hole corresponding to the insertion hole 11.

[0028] Specifically, the double outer frame 3 can install the two workpieces to be welded on two independent angle adjustment mechanisms respectively. By synchronously adjusting the spatial position and angle of the two workpieces, precise alignment between the welding parts can be achieved. The hole on the top rear side of the rectangular opening 4, which corresponds to the insertion hole 11, provides a guarantee for the positioning and locking of the moving plate 10.

[0029] Working Principle: During operation, the operator first securely clamps the workpiece to be welded onto the special fixture 16. A precise manual rotating mechanism adjusts the fixing plate 15, causing the second gear 14 at its bottom to rotate precisely within the circular groove 13. This fine-tuning process allows the workpiece to achieve precise angle adjustment around its own axis, ensuring optimal fit between the weld bevel angle and the butt joint gap. After precise alignment, the rotating screw 18 pushes the rack block 17 forward, creating a secure meshing connection with the second gear 14, thus reliably locking the welding angle. After precise angle adjustment, the operator can smoothly slide the moving plate 10 back and forth along the precisely machined groove on the inner side of the inner frame 6, precisely adjusting the working distance between the welding torch and the workpiece. After positioning, the special fixing bolt 12 is accurately screwed into the rear insertion hole 11 of the moving plate 10 and the corresponding positioning hole on the outer frame 3, forming a rigid connection between the moving plate 10 and the inner frame 6, ensuring complete elimination of any displacement during welding. When the welding operation requires changing positions, the operator can loosen the upper buckle 8 to disengage it from the first gear 7, and then manually drive the inner frame 6 to rotate freely around the rotating seat 5 as the axis of 360 degrees. This function allows the weld seams of each position on the workpiece to be adjusted to the most ideal welding position in sequence. After the angle is adjusted to the correct position, the upper buckle 8 can be tightened again to restore the stable fixed state and continue the welding operation.

[0030] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. An angle adjustment device for welding structural components of engineering machinery, comprising a base plate (1) and a support leg (2) fixedly connected to its top, wherein an outer frame (3) is fixedly connected to the top of the support leg (2), a rectangular opening (4) is provided in the middle of the outer frame (3), and rotating seats (5) are provided in the middle of the left and right sides of the rectangular opening (4), characterized in that, Also includes: Flipping mechanism: The flipping mechanism includes an inner frame (6) rotatably connected between the rotating seat (5), a first gear (7) is fixedly connected to the outer end of the inner frame (6) at the rotating shaft, an upper buckle (8) is engaged at the top of the first gear (7), a slide rod (9) is slidably connected to the left and right ends of the upper buckle (8), a moving plate (10) is slidably connected to the middle of the inner frame (6), an insertion hole (11) is opened on the rear side of the moving plate (10), and a fixing bolt (12) is threaded inside the insertion hole (11); Angle adjustment mechanism: The angle adjustment mechanism is fixedly connected to the top of the movable plate (10).

2. The angle adjustment device for welding structural components of engineering machinery according to claim 1, characterized in that, The inner frame (6) is rotatably connected to the inside of the rectangular opening (4) through the left and right end pivots. The inner side of the inner frame (6) is provided with a sliding groove. The movable plate (10) is slidably connected between the inner frame (6) through the front and rear side extension blocks.

3. The angle adjustment device for welding structural components of engineering machinery according to claim 2, characterized in that, The first gear (7) is fixedly connected to the outer end of the inner frame (6) at the pivot. The bottom of the inner side of the upper buckle (8) is provided with a tooth block corresponding to the first gear (7). The bottom end of the slide rod (9) is fixedly connected to the outer end of the rectangular opening (4).

4. The angle adjustment device for welding structural components of engineering machinery according to claim 1, characterized in that, The angle adjustment mechanism includes a circular groove (13) formed on the top of the movable plate (10). A second gear (14) is rotatably connected inside the circular groove (13). A fixed plate (15) is fixedly connected to the top of the second gear (14). A clamp (16) is fixedly connected to the top of the fixed plate (15). A rack block (17) meshes with the front side of the second gear (14). A lead screw (18) is rotatably connected to the front side of the rack block (17).

5. The angle adjustment device for welding structural components of engineering machinery according to claim 4, characterized in that, The second gear (14) is rotatably connected to the middle of the moving plate (10) via a bottom pivot. The bottom of the fixed plate (15) is slightly higher than the top of the moving plate (10). The clamp (16) is a fixed structure with a clamping effect.

6. The angle adjustment device for welding structural components of engineering machinery according to claim 5, characterized in that, The circular groove (13) has a threaded groove on the front side corresponding to the lead screw (18), the lead screw (18) is threaded inside the threaded groove, and the rack block (17) is slidably connected inside the moving plate (10) through the limiting rod on the front side.

7. The angle adjustment device for welding structural components of engineering machinery according to claim 1, characterized in that, There are two outer frames (3), and the two outer frames (3) are symmetrically fixed to the top of the base plate (1) by support legs (2). The rectangular opening (4) has a hole corresponding to the insertion hole (11) on the rear side of the top.

Images