A jib cylinder inner welding device

Abstract

A kind of inside welding device of boom cylinder, belong to engineering machinery technical field.It is characterized by, including: welding torch, wire feeder, telescopic rod, three-axis linear guide system;Welding torch is used for the welding of boom cylinder, wire feeder is used for supplying welding wire for welding torch;Telescopic rod is made of multiple sections of sleeve nested with diameter decreasing in turn, realize unfolding and shrinkage;The welding torch, wire feeder are respectively installed at the head and tail of telescopic rod, the inner cavity of telescopic rod sleeve is for welding wire and welding stick wire to pass through;Telescopic rod is installed on three-axis linear guide system, realize the position adjustment of welding torch in X-Y-Z three directions.The utility model can replace handheld type lengthened welding torch operation, realizes the long stroke, three-dimensional fine adjustment of welding torch, narrow cavity operation in cylinder.

Description

Technical Field

[0001] This utility model relates to an internal welding device for a boom cylinder, belonging to the field of engineering machinery technology. Background Technology

[0002] In the field of small and medium tonnage hoisting, truck-mounted cranes have become one of the most widely used hoisting equipment in the engineering construction field due to their unique flexibility and convenience in negative angle telescopic hoisting.

[0003] However, due to its structural characteristics, many components such as the boom, outriggers, and outrigger cavities are long and narrow, making it impossible to achieve continuous, stable, and full-length welding due to space constraints. Therefore, designing an internal welding device for the boom cylinder is crucial for achieving internal welding of long and narrow components. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of the prior art by providing a welding device for the inside of a boom cylinder, which solves the problem of difficult welding inside long and narrow cavities.

[0005] The technical solution of this utility model is as follows: A welding device for the internal structure of a boom cylinder, characterized in that it includes: a welding torch, a wire feeder, a telescopic rod, and a three-axis linear guide system; the welding torch is used for welding the boom cylinder, and the wire feeder is used to supply welding wire to the welding torch; the telescopic rod is composed of multiple sections of sleeves with successively decreasing diameters, realizing expansion and contraction; the welding torch and the wire feeder are respectively installed at the head and tail of the telescopic rod, and the inner cavity of the sleeves of the telescopic rod allows the welding wire and welding cable to pass through; the telescopic rod is installed on the three-axis linear guide system to realize the position adjustment of the welding torch in the XYZ directions.

[0006] In the above scheme, the three-axis linear guide system is used in conjunction with the telescopic rod for internal welding, which facilitates the welding torch to perform long straight welds inside the boom cylinder; the three-axis linear guide can help the welding torch to achieve the desired effect; the telescopic rod is a variable diameter telescopic linear structure, which not only ensures the stability of the telescopic rod, but also allows for length adjustment to meet the needs of welding torches of different lengths and boom lengths.

[0007] The welding wire and welding cable are all threaded through the inner cavity of the rectangular sleeve. This prevents the wire feeding hose from bending and clogging inside the sleeve, and also avoids the cable sheath from being worn through by the sleeve wall, ensuring reliable wire feeding and a stable arc. No special adjustments are required to the wire feeder or welding torch. After the welding torch and wire feeder are installed, the welding wire and welding cable can be directly threaded through the inner cavity of the telescopic rod for immediate application.

[0008] Furthermore, the three-axis linear guide system includes: an X-axis linear guide, a Y-axis linear guide, and a Z-axis linear guide. The three linear guides are perpendicular to each other and together form a three-dimensional rectangular coordinate system. The Y-axis linear guide is installed on the X-axis linear guide, the Z-axis linear guide is installed on the Y-axis linear guide, and the telescopic rod is installed on the Z-axis linear guide through an assembly frame.

[0009] In the above scheme, the telescopic rod, wire feeder, and welding torch are simultaneously adjusted in the XYZ directions under the action of the three-axis linear guide system, achieving precise positioning of the welding torch. After adjusting each axis of the track system to align the welding torch with the internal weld seam, the welding of the long straight weld seam inside the arm body is carried out.

[0010] Furthermore, each sleeve section has a rectangular cross-section, with the two diagonals of the rectangle arranged horizontally and vertically, respectively. The horizontal and vertical diagonal arrangement of the rectangular sleeve ensures that the telescopic rod retains torsional stiffness in the cantilevered state, preventing rotation.

[0011] Furthermore, adjacent sleeves are fixed by adjusting bolts; the length of the telescopic rod can be adjusted by loosening the adjusting bolts; the lower sleeve is pressed tightly by tightening the adjusting bolts on the upper sleeve wall, thus fixing the adjacent sleeves together.

[0012] The telescopic pole preferably adopts a three-section sleeve nested connection, and its length can be adjusted, with a stable adjustment range of 1.8~3.6m.

[0013] Furthermore, the assembly frame includes: a wire feeder mounting frame and a telescopic rod mounting frame; the telescopic rod mounting frame is mounted on the Z-axis linear guide rail and is fixedly connected to the tail of the telescopic rod; the wire feeder mounting frame includes: a support plate and a portal frame; the support plate is fixedly connected to the telescopic rod mounting frame for supporting and fixing the wire feeder; the portal frame is fixedly connected to the support plate for limiting and fixing the wire feeder.

[0014] Furthermore, the head of the telescopic rod is equipped with a welding torch clamp, which includes an upper clamping block and a lower clamping block for paired use; the clamping surfaces of the upper and lower clamping blocks are respectively provided with arc grooves, and the two arc grooves form a limiting hole for clamping the welding torch. The end of the welding torch can rotate 360°, and after being adjusted to a suitable welding position as needed, the upper and lower clamping blocks are tightened and fixed.

[0015] Furthermore, the lower clamping block is fixed to the end face of the telescopic rod head, and the upper clamping block is convex in shape. Two fastening bolts are respectively provided at the transition points of the two steps of the convex upper clamping block, and the clamping surfaces of the upper and lower clamping blocks are connected and fixed by the two fastening bolts. The lower clamping block is welded to the end of the telescopic rod, and a threaded hole is pre-drilled on the clamping surface of the lower clamping block. The upper clamping block has a bolt through hole, and the fastening bolt passes through the bolt through hole of the upper clamping block and is then fixedly connected to the threaded hole of the lower clamping block.

[0016] Furthermore, the clamping surfaces of the upper and lower clamping blocks are arranged at an angle. During operation, the welding torch will vibrate up and down and left and right. The angled clamping surfaces of the upper and lower clamping blocks can alleviate the loosening caused by the vibration, resulting in good stability.

[0017] This invention replaces the handheld extended welding torch by fixing the welding torch to the telescopic rod of the track system, achieving long stroke, three-dimensional fine adjustment, and narrow cavity operation within the barrel. The variable diameter and telescopic design of the telescopic rod ensures its stability and length adaptability; combined with the track system, it extends the welding torch to achieve longer internal welding, and operates smoothly without vibration during welding; it is suitable for various welding power sources and wire feeding systems, and conventional wire feeding systems can be used directly without modification. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 for Figure 1 Schematic diagram of direction A (only welding torch clamp is shown); Figure 4 This is a schematic diagram of the welding torch clamp in this utility model; Figure 5 This is a schematic diagram of the usage state of this utility model; In the figure: 1. Welding torch; 2. Wire feeder; 3. Telescopic rod; 4. X-axis linear guide; 5. Y-axis linear guide; 6. Z-axis linear guide; 7. Adjusting bolt; 8. Wire feeder mounting bracket; 9. Telescopic rod mounting bracket; 9-1. Support plate; 9-2. Gate frame; 10. Welding torch clamp; 10. Upper clamping block; 10-2. Lower clamping block; 11. Fastening bolt; 12. Drive motor; 13. Boom cylinder; 14. Welding device of this utility model. Detailed Implementation

[0019] An internal welding device for a boom cylinder, such as Figure 1-2 As shown, it includes: a welding torch 1, a wire feeder 2, a telescopic rod 3, and a three-axis linear guide system. The telescopic rod is composed of multiple nested sleeves with successively decreasing diameters. The welding torch and the wire feeder are respectively installed at the head and tail of the telescopic rod. The inner cavity of the sleeves of the telescopic rod allows the welding wire and welding cable to pass through.

[0020] The three-axis linear guide system includes: an X-axis linear guide 4, a Y-axis linear guide 5, and a Z-axis linear guide 6. These three linear guides are perpendicular to each other, forming a three-dimensional rectangular coordinate system. The Y-axis linear guide is mounted on the slider of the X-axis linear guide, and the Z-axis linear guide is mounted on the slider of the Y-axis linear guide. The telescopic rod (wire feeder) is mounted on the slider of the Z-axis linear guide via an assembly frame.

[0021] In one embodiment of this utility model, the cross-section of each sleeve is rectangular, and the two diagonals of the rectangle are arranged horizontally and vertically respectively to prevent rotation.

[0022] In one embodiment of this utility model, the telescopic rod is connected by a three-section nested sleeve, with a stable adjustment range of 1.8~3.6m. Adjacent sleeves are fixed by adjusting bolts 7; the length of the telescopic rod can be easily adjusted by loosening the adjusting bolts; the wall of the next sleeve is pressed tightly by tightening the adjusting bolts on the wall of the upper sleeve, thus fixing the adjacent sleeves together.

[0023] In one embodiment of this utility model, the assembly frame includes: a wire feeder mounting frame 8 and a telescopic rod mounting frame 9. The telescopic rod mounting frame is mounted on the slider of the Z-axis linear guide and is fixedly connected to the tail of the telescopic rod. The wire feeder mounting frame includes: a support plate 9-1 and a portal frame 9-2. The support plate is fixedly connected to the telescopic rod mounting frame and is used to support and fix the wire feeder. The portal frame is fixedly connected to the support plate and is used to limit and fix the wire feeder.

[0024] In one embodiment of the present invention, the head of the telescopic rod is provided with a welding gun clamp 10. The welding gun clamp includes: an upper clamping block 10-1 and a lower clamping block 10-2 used in pairs; the clamping surfaces of the upper and lower clamping blocks are respectively provided with arc grooves, and the two arc grooves form a limiting hole for clamping the welding gun.

[0025] In one embodiment of this utility model, the lower clamping block is welded and fixed to the end of the telescopic rod. The lower clamping block has a threaded hole pre-reserved on the clamping surface. The upper clamping block is convex in shape. The two steps of the convex upper clamping block are respectively provided with bolt through holes. After the fastening bolt 11 passes through the bolt through hole of the upper clamping block, it is fixedly connected to the threaded hole of the lower clamping block.

[0026] In one embodiment of this utility model, the clamping surfaces of the upper and lower clamping blocks are arranged at an angle.

Claims

1. A welding device for the inside of a boom cylinder, characterized in that it comprises: Welding torch, used for welding boom bodies; Wire feeder, used to supply welding wire to the welding torch; The telescopic rod is composed of multiple nested sleeves with successively decreasing diameters, enabling it to expand and contract. The welding gun and wire feeder are respectively installed at the head and tail of the telescopic rod, and the inner cavity of the sleeves of the telescopic rod allows the welding wire and welding cable to pass through. The three-axis linear guide system includes a telescopic rod that allows for position adjustment of the welding torch in the X, Y, and Z directions.

2. The welding device for the internal structure of a boom cylinder according to claim 1, characterized in that, The three-axis linear guide system includes: an X-axis linear guide, a Y-axis linear guide, and a Z-axis linear guide. The three linear guides are perpendicular to each other and together form a three-dimensional rectangular coordinate system. The Y-axis linear guide is mounted on the X-axis linear guide, the Z-axis linear guide is mounted on the Y-axis linear guide, and the telescopic rod is mounted on the Z-axis linear guide via an assembly frame.

3. The welding device for the internal structure of a boom cylinder according to claim 1, characterized in that, Each section of the sleeve has a rectangular cross-section, with the two diagonals of the rectangle arranged horizontally and vertically, respectively.

4. The welding device for the internal structure of a boom cylinder according to claim 3, characterized in that, The adjacent sleeves are fixed by adjusting bolts; by tightening the adjusting bolts of the upper sleeve wall, the lower sleeve wall is pressed tightly, so that the adjacent sleeves are fixedly connected.

5. The welding device for the internal structure of a boom cylinder according to claim 2, characterized in that, The assembly frame includes: a wire feeder mounting frame and a telescopic rod mounting frame; the telescopic rod mounting frame is mounted on the Z-axis linear guide rail and is fixedly connected to the tail of the telescopic rod; The wire feeder mounting frame includes: a support plate and a portal frame; the support plate is fixedly connected to the telescopic rod mounting frame for supporting and fixing the wire feeder; the portal frame is fixedly connected to the support plate for limiting and fixing the wire feeder.

6. The welding device for the internal structure of a boom cylinder according to claim 5, characterized in that, The head of the telescopic rod is provided with a welding gun clamp, which includes an upper clamping block and a lower clamping block for use in pairs; the clamping surfaces of the upper and lower clamping blocks are respectively provided with arc grooves, and the two arc grooves form a limiting hole for clamping the welding gun.

7. The welding device for the internal structure of a boom cylinder according to claim 6, characterized in that, The lower clamping block is fixed to the end face of the telescopic rod head, and the upper clamping block is convex in shape. Fastening bolts are provided at the transition points of the two steps of the convex upper clamping block, and the clamping surfaces of the upper and lower clamping blocks are connected and fixed by the two fastening bolts.

8. The welding device for the internal structure of a boom cylinder according to claim 7, characterized in that, The clamping surfaces of the upper and lower clamping blocks are arranged at an angle.

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