Welding equipment for gear ring type shafts

Abstract

The welding equipment comprises a bottom plate, a first stand column and a lifting mechanism are fixedly arranged on the front side of the upper end face of the bottom plate, and a workbench capable of overturning up and down in a vertical plane to adjust the inclination angle is installed on the upper end face of the first stand column in a hinged mode. A connecting rod capable of rotating in a vertical plane is installed on the left side face or the right side face of the first stand column, and the lifting mechanism and the connecting rod are correspondingly located on the left side and the right side of the first stand column. A lifting assembly is installed at the upper end of the second stand column, and a welding gun assembly correspondingly located above the workbench is installed on the lifting assembly. According to the welding equipment, the influence of manual welding factors is overcome, the welding quality reliability of gear ring type shafts is ensured, the manual welding labor amount is greatly reduced, the labor cost is saved, and the welding efficiency is improved; the welding procedure can be divided into several procedures to be intermittently carried out, so that the gear ring can be fully cooled after being circumferentially welded every time in a short time, and the hardness of the gear ring on a gear ring type shaft finished product is ensured not to be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment for shaft workpieces, and particularly relates to a welding equipment for a gear ring type shaft. Background Art

[0002] The gear ring type shaft is an important part in the rail transit braking system. As Figure 1 shown in a gear ring type shaft, which includes a shaft body D and a gear ring E. The left end of the shaft body D has a smooth section D-1, and a spiral section D-2 is coaxially and fixedly arranged at the right end of the smooth section D-1. The gear ring E is sleeved and welded and fixed at the junction position of the smooth section D-1 and the spiral section D-2, and the left end face of the gear ring E has a ring-shaped tooth surface one E-1 surrounding the outer peripheral side of the smooth section D-1. The traditional welding method for this gear ring type shaft is as follows: The gear ring E is sleeved on the shaft body D at the junction position of the smooth section D-1 and the spiral section D-2, and then the smooth section D-1 is clamped and fixed on the clamping head of the rotating equipment. The rotating equipment is started, and during the rotation of the shaft body D, an argon arc welding torch is used manually to weld and fixedly connect the inner ring of the gear ring E on the side facing the spiral section D-2 and the outer peripheral side of the shaft body D together.

[0003] The problems existing in the above-mentioned method for manually welding the gear ring type shaft are as follows: (1) This gear ring type shaft has high hardness requirements for the gear ring. Excessive welding time will cause the hardness of the gear ring to decrease, thus affecting the braking effect of the rail transit braking system. However, the above-mentioned method for manually welding the gear ring type shaft is greatly affected by human factors, and it is difficult to ensure that the overall welding time of each gear ring type shaft is short, so it is difficult to ensure that the hardness of the gear ring on each welded gear ring type shaft finished product meets the requirements, that is, the reliability of the gear ring type shaft finished product is poor; (2) Since the welding molten surface during the welding of the argon arc welding torch is limited, and it is necessary to ensure that the gear ring cannot be in a welding high-temperature state for a long time, the gear ring type shaft needs to be welded intermittently in several times to meet the full-weld requirement of the finished product. The above-mentioned method for manually welding the gear ring type shaft has a large amount of manual labor and low welding efficiency, seriously restricting the welding processing efficiency of the gear ring type shaft and making it difficult to meet the requirements of large-scale delivery. Therefore, the utility model provides a welding equipment for a gear ring type shaft in order to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of the present utility model is to overcome the defects existing in the prior art and provide a welding device for ring gear shafts. When welding a ring gear shaft, the ring gear is sleeved at the junction of the smooth section and the spiral section of the shaft body. Then, the assembled shaft body and ring gear are installed and clamped between the workpiece mounting seat and the workpiece pressing seat. During the subsequent welding process, the driving mechanism drives the shaft body and the ring gear to rotate, and at the same time, the welding torch assembly continuously performs circumferential welding on the outer peripheral sides of the ring gear and the shaft body. Compared with the traditional method of manually welding ring gear shafts, it overcomes the influence of human welding factors, ensures the reliability of the welding quality of ring gear shafts, greatly reduces the manual welding workload, and helps to save labor costs. In order to prevent the ring gear from being in a high welding temperature state for a long time, the welding process can also be divided into several intermittent processes, so that the ring gear after each short-time circumferential welding can fully dissipate heat and cool down, ensuring that the hardness of the ring gear on the finished ring gear shaft after welding will not be significantly reduced. The operation is simple, the technical requirements for welding operators are reduced, and at the same time, the welding efficiency is improved, meeting the requirements of large-scale delivery of ring gear shafts.

[0005] To achieve the above object, the technical solution of the present utility model is to design a welding device for ring gear shafts, including a bottom plate. On the front side of the upper end surface of the bottom plate, a first column and a lifting mechanism are fixedly provided. On the upper end surface of the first column, a workbench that can be turned up and down and adjusted for the inclination angle in the vertical plane is hingedly installed. On the left or right side surface of the first column, a connecting rod that can rotate in the vertical plane is installed, and the lifting mechanism and the connecting rod are respectively located on the left and right sides of the first column. The upper end of the connecting rod is slidably connected to the lower end surface of the workbench through a sliding component that can slide along the left-right direction. The lifting head at the upper end of the lifting mechanism is rotatably connected to the lower end surface of the workbench.

[0006] On one of the left end or the right end of the upper end surface of the workbench, a first box is installed, and on the other, a second box is installed. On the second box, a workpiece mounting seat facing the first box is installed. On the first box, a workpiece pressing seat that cooperates with the workpiece mounting seat to axially clamp the shaft body on the ring gear shaft is installed. On the second box, a driving mechanism for driving the workpiece mounting seat to drive the ring gear shaft to rotate around the axial center line of the shaft body is also installed.

[0007] On the rear side of the upper end surface of the bottom plate, a first slide rail along the left-right direction is provided. A first sliding seat is slidably installed on the first slide rail. On the upper end surface of the first sliding seat, a second column is fixedly provided. An elevating component is installed on the second column, and a welding torch assembly corresponding to the upper side of the workbench is installed on the elevating component.

[0008] The driving mechanism, the elevating component, and the welding torch assembly are all electrically connected to the control box.

[0009] The utility model discloses a welding device for gear ring shafts. When welding gear ring shafts, the gear ring is sleeved at the junction of the smooth section and the spiral section on the shaft body, and then the sleeved and assembled shaft body and gear ring are installed and clamped between the workpiece mounting seat and the workpiece abutting seat. In the subsequent welding process, the shaft body and the gear ring are driven to rotate by the driving mechanism, and at the same time, the welding gun assembly continuously welds the gear ring and the outer peripheral side of the shaft body circumferentially. Compared with the traditional manual welding method of gear ring shafts, the utility model overcomes the influence of human welding factors, ensures the reliability of the welding quality of gear ring shafts, greatly reduces the labor of manual welding, and helps to save labor costs; in order to avoid the gear ring being in a high-temperature welding state for a long time, the welding process can also be divided into several processes for intermittent operation, so that the gear ring after each short-term circumferential welding can fully dissipate heat and cool down, ensuring that the hardness of the gear ring on the finished gear ring shaft after welding will not be greatly reduced; the operation is simple, the technical requirements for welding operators are reduced, and the welding efficiency is improved, meeting the requirements for large-scale delivery of gear ring shafts.

[0010] The preferred technical solution is that the second box body is located at the left end of the upper surface of the workbench, the first box body is located at the right end of the upper surface of the workbench, the second driving motor electrically connected to the control box is installed on the rear side of the second box body, and a reducer drivingly connected to the output shaft of the second driving motor is installed inside the second box body, a rotating sleeve penetrating the left and right end surfaces is provided inside the reducer, a shaft tube is fixedly provided inside the rotating sleeve, a rotating joint seat is fixedly provided at the left end of the shaft tube, the rotating joint seat is rotatably mounted on the mounting hole on the left end plate of the second box body, and two connecting pipe heads penetrating the shaft tube are provided on the left end plate of the rotating joint seat, the right end of the shaft tube penetrates the right end surface of the second box body and is fixedly provided with a flange plate 2 located on the right side of the second box body, and the workpiece mounting seat is fixedly installed on the right end surface of the flange plate 2, and the second driving motor, the reducer, the rotating sleeve, the shaft tube, the second flange plate and the rotating joint seat constitute the driving mechanism;

[0011] The right side of the box body is equipped with a cylinder with a piston rod facing the left end, and the piston rod end of the cylinder is coaxially fixed with a connecting rod that vertically moves through the left and right end surfaces of the box body, and the left end of the connecting rod is fixed with a flange plate located on the left side of the box body. The workpiece abutment seat is fixedly installed on the left end surface of the flange plate, and the cylinder is electrically connected to the control box. The drive mechanism is ingeniously and reasonably designed, and the distance between the two opposite sides of the workpiece abutment seat and the workpiece mounting seat can be flexibly adjusted through the cylinder, which can be applicable to various specifications of gear ring shafts to be welded, thereby improving the flexibility of use of the welding equipment of the utility model.

[0012] A further preferred technical solution is that the workpiece mounting seat is made of copper metal and includes a third flange. A cap body with an opening facing left is coaxially fixed to the right end face of the third flange. A blind tube extending vertically into its cavity is fixedly provided at the center of the right end face of the cap body. The opening end of the blind tube extends outside the right end face of the cap body, and a second annular tooth surface adapted to the first annular tooth surface on the shaft of the gear ring is provided on the end face of the opening end of the blind tube. The workpiece mounting seat is fixedly installed on the outer side of the right side face of the second box body through bolts inserted into the corresponding mounting holes on the third flange and the second flange;

[0013] The workpiece pressing seat includes a shaft rod. A conical tip extending coaxially to the left is provided at the left end of the shaft rod, and a fourth flange is vertically fixed to the right end. The workpiece pressing seat is fixedly installed on the outer side of the left side face of the first box body through bolts inserted into the corresponding mounting holes on the fourth flange and the first flange. The structure design of the workpiece mounting seat is simple. During welding, after the gear ring is sleeved on the specified position of the shaft body, by inserting the smooth section into the blind tube and meshing the first annular tooth surface on the gear ring with the second annular tooth surface on the end face of the opening end of the blind tube, the installation and positioning are convenient and fast. Then, the workpiece pressing seat is driven by a cylinder to move towards the shaft body until the conical tip cooperates with the workpiece mounting seat to clamp the shaft body. Moreover, the conical tip and the end face of the shaft body are in point contact, thus ensuring the smoothness when the driving mechanism drives the shaft body and the gear ring to rotate during the welding operation process; the cavity inside the workpiece mounting seat and the inside of the shaft tube form a cooling water chamber, so that circulating cooling water can be continuously introduced during welding, which can timely take away the heat generated during the welding process, help reduce the temperature of the gear ring, and further ensure the welding quality of the gear ring type shaft after welding is completed.

[0014] A preferred technical solution is also that a second slide rail along the left-right length direction is provided on the upper end face of the workbench. A guide rod along the left-right length direction is fixedly provided on the front side face of the workbench. A first chute adapted to the second slide rail is provided at the bottom of the first box body. The first box body is slidably installed at the right end of the guide rod through the first chute. A second chute adapted to the second slide rail is provided at the bottom of the second box body. The second box body is slidably installed at the left end of the guide rod through the second chute. Moreover, the front side faces of the first box body and the second box body are respectively clamped and fixed to the guide rod through clamping components. The first box body and the second box body are respectively slidably installed on the second slide rail on the upper end face of the workbench through the bottom chutes and are clamped and fixed to the guide rod through clamping components to realize the fixation of the first box body or the second box body on the workbench. The installation method is simple, ensuring the adjustable flexibility of the installation positions of the first box body and the second box body on the workbench.

[0015] A further preferably technical solution is that the clamping assembly includes a first plate body and a second plate body. The first plate body is fixed on the front side of the first box body or the front side of the second box body. Arc-shaped half grooves adapted to the guide rods are respectively provided on the opposite side surfaces of the first plate body and the second plate body. Screw holes are respectively provided on the first plate body and the second plate body above and below the arc-shaped half grooves. The first plate body is clamped to the rear side of the guide rod through the arc-shaped half groove, and the second plate body is clamped to the front side of the guide rod through the arc-shaped half groove. The first plate body and the second plate body are clamped and fixed on the guide rod by screws screwed into the corresponding screw holes. The clamping assembly has a clever and reasonable structural design, good adaptability to the guide rod, and ensures the convenience when adjusting the fixing position of the first box body or the second box body on the guide rod.

[0016] A further preferably technical solution is that a third chute extending along the left-right length direction is provided on the lower end surface of the workbench. A slider is hinged to the upper end of the connecting rod. The slider is slidably installed in the third chute on the lower end surface of the workbench. The slider and the third chute form the sliding assembly. The sliding assembly has a simple structural design, high implementation feasibility, and strong practicability.

[0017] A preferably technical solution is that the lifting assembly includes a first driving motor, a lead screw, two bearing seats, and a second sliding seat. A third column is fixedly provided at the rear end of the right side surface of the second column. The two bearing seats are vertically and correspondingly spaced and fixedly provided on the front side surface of the third column. The lower end of the lead screw is inserted and fixedly provided in the inner ring of the lower bearing seat, and the upper end of the lead screw is inserted and fixedly provided in the inner ring of the upper bearing seat. The first driving motor is fixedly installed at the upper end of the front side surface of the third column. The upper end of the lead screw penetrates through the bearing inner ring of the upper bearing seat and is fixedly connected to the output shaft facing downward of the first driving motor. A screw hole penetrating through the upper and lower end surfaces is provided on the second sliding seat. The second sliding seat is installed on the lead screw between the two bearing seats through screw connection and cooperation, and the left side surface of the second sliding seat is attached to the front end of the right side surface of the second column. The lifting assembly has a clever and reasonable structural design, high preparation and implementation feasibility, and ensures the convenience when adjusting the height of the welding torch assembly.

[0018] A further preferred technical solution is that the welding torch assembly includes a first support arm, the rear end of the first support arm is vertically fixed on the front side surface of the second sliding seat, a fixed clamping block is fixed at the front end of the first support arm, and further includes a movable clamping block adapted to be docked with the fixed clamping block. Corresponding arc-shaped grooves are provided on the opposite side surfaces of the fixed clamping block and the movable clamping block. The fixed clamping block and the movable clamping block are fixedly connected together by a bolt assembly passing through the corresponding mounting holes at the opposite ends of the two. And the circular holes formed by the docking of the corresponding arc-shaped grooves on the fixed clamping block and the movable clamping block clamp and fix a second support arm extending forward. A first chuck and a second chuck corresponding to be located above the workbench are provided at the front end of the second support arm. A welding torch with a welding head clamped and fixed below is provided in the first chuck, and a welding wire corresponding to be located below the welding head on the welding torch is inserted through the second chuck. The structure of the welding torch assembly is simply designed. The welding torch is detachably installed at the front end of the first support arm through the second support arm, so that a suitable welding torch can be flexibly replaced according to the requirements of the welding workpiece, improving the flexible applicability of the welding equipment of the present utility model.

[0019] A further preferred technical solution is that the upper end of the first column is rotatably installed in the middle of the lower end surface of the workbench through a first rotating shaft assembly, the lower end of the connecting rod is rotatably installed on the left or right side surface of the first column through a second rotating shaft assembly, the lifting mechanism is a manual lifting hydraulic cylinder, and the upper end of the piston rod of the lifting mechanism is rotatably installed on the lower end surface of the workbench through a third rotating shaft assembly.

[0020] A further preferred technical solution is that the control box is fixed on the upper left side surface of the second column.

[0021] The advantages and beneficial effects of the present utility model are as follows:

[0022] 1. For a welding equipment for a gear ring type shaft of the present utility model, when welding a gear ring type shaft, the gear ring is sleeved at the intersection position of the smooth section and the spiral section of the shaft body, and then the assembled shaft body and gear ring are installed and clamped between the workpiece mounting seat and the workpiece abutting seat. During the subsequent welding process, the shaft body and the gear ring are driven to rotate by the driving mechanism, and at the same time, the welding torch assembly continuously circumferentially welds the outer peripheral sides of the gear ring and the shaft body. Compared with the traditional method of manually welding gear ring type shafts, it overcomes the influence of human welding factors, ensures the reliability of the welding quality of gear ring type shafts, greatly reduces the manual welding workload, helps to save labor costs; in order to avoid the gear ring being in a welding high temperature state for a long time, the welding process can also be divided into several intermittent processes, so that the gear ring after each short-time circumferential welding can fully dissipate heat and cool down, ensuring that the hardness of the gear ring on the finished gear ring type shaft after welding will not be greatly reduced; the operation is simple, reducing the technical requirements for welding operators, and at the same time improving the welding efficiency, meeting the requirements of large batch delivery of gear ring type shafts.

[0023] 2. The driving mechanism is ingeniously and reasonably designed. The distance between the workpiece pressing seat and the opposite side surfaces of the workpiece mounting seat can be flexibly adjusted by the air cylinder, which can be applicable to various specifications of to-be-welded gear ring shafts, improving the flexibility of use of the welding equipment of the present utility model.

[0024] 3. The structure of the workpiece mounting seat is simply designed. During welding, after the gear ring is sleeved on the specified position of the shaft body, by inserting the smooth section into the blind tube and meshing the annular tooth surface one on the gear ring with the annular tooth surface two on the opening end surface of the blind tube, the installation and positioning are convenient and fast. Then, the workpiece pressing seat is driven by the air cylinder to move towards one side of the shaft body until the conical tip cooperates with the workpiece mounting seat to clamp the shaft body. Moreover, the conical tip and the end surface of the shaft body are in point contact, thus ensuring the smoothness when the driving mechanism drives the shaft body and the gear ring to rotate during the welding operation process; the cavity inside the workpiece mounting seat and the inside of the shaft tube form a cooling water chamber, so that circulating cooling water can be continuously introduced during welding, which can timely take away the heat generated during welding, contributing to reducing the temperature of the gear ring and further ensuring the welding quality of the gear ring shaft after welding is completed.

[0025] 4. The first box body and the second box body are respectively slidably mounted on the second slide rail on the upper end surface of the workbench through the bottom chutes, and are clamped and fixed on the guide rod by the clamping assembly to realize the fixation of the first box body or the second box body on the workbench. The installation method is simple, ensuring the adjustable flexibility of the installation positions of the first box body and the second box body on the workbench.

[0026] 5. The structure of the welding torch assembly is simply designed. The welding torch is detachably mounted on the front end of the first support arm through the second support arm, so that a suitable welding torch can be flexibly replaced according to the requirements of the welding workpiece, improving the flexible applicability of the welding equipment of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a perspective view of a gear ring shaft in the background art;

[0028] Figure 2 is a left front side perspective view of a welding equipment for gear ring shafts of the present utility model (the workpiece mounting seat and the workpiece pressing seat are hidden);

[0029] Figure 3 is Figure 2 a partial enlarged view of the H position in

[0030] Figure 4 is Figure 2 a partial enlarged view of the S position in

[0031] Figure 5 is a front view of a welding equipment for gear ring shafts of the present utility model (the workpiece mounting seat and the workpiece pressing seat are hidden);

[0032] Figure 6 It is a perspective view of the right front side of the second box body;

[0033] Figure 7 It is a longitudinal sectional view of the second box body;

[0034] Figure 8 It is a perspective view of the right front side of the workpiece mounting seat;

[0035] Figure 9 It is a perspective view of the left front side of the workpiece mounting seat;

[0036] Figure 10 It is a longitudinal sectional view of the workpiece mounting seat along the axial direction;

[0037] Figure 11 It is an installation relationship diagram of the workpiece pressing seat on the first box body;

[0038] Figure 12 It is a perspective view of the right front side (hiding the cylinder) when the workpiece mounting seat and the workpiece pressing seat clamp the shaft of the gear ring type;

[0039] Figure 13 It is a perspective view of the left front side (hiding the cylinder) when the workpiece mounting seat and the workpiece pressing seat clamp the shaft of the gear ring type.

[0040] In the figure: 1. Base plate; 2. First column; 3. Lifting mechanism; 4. Workbench; 5. Connecting rod; 6. First box body; 7. Second box body; 8. Second column; 9. First driving motor; 10. Welding torch assembly; 11. Control box; 1-1. First slide rail; 1-2. First sliding seat; 2-1. First rotating shaft assembly; 4-1. Second slide rail; 4-2. Guide rod; 5-1. Slide block; 5-2. Second rotating shaft assembly; 6-1. First chute; 6-2. Cylinder; 6-3. Connecting rod; 6-4. First flange; 7-1. Second driving motor; 7-2. Reducer; 7-3. Rotating sleeve; 7-4. Shaft tube; 7-5. Second flange; 7-6. Rotary joint seat; 7-7. Connecting pipe head; 8-1. Third column; 10-1. First arm; 10-2. Fixed clamping block; 10-3. Movable clamping block; 10-4. Second arm; 10-5. First chuck; 10-6. Second chuck; 10-7. Welding torch; 10-8. Welding wire; 10-9. Second sliding seat; A. Clamping assembly; A-1. First plate body; A-2. Second plate body; B. Workpiece mounting seat; B-1. Third flange; B-2. Cap body; B-3. Blind tube; B-4. Second annular tooth surface; C. Workpiece pressing seat; C-1. Shaft rod; C-2. Taper tip; C-3. Fourth flange; D. Shaft body; D-1. Smooth section; D-2. Spiral section; E. Gear ring; E-1. First annular tooth surface. Specific implementation manner

[0041] The specific embodiments of the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, and cannot be used to limit the protection scope of the present utility model.

[0042] Embodiment

[0043] As Figures 2 to 11 shown, the present utility model is a welding device for a ring gear shaft, including a bottom plate 1. A first column 2 and a lifting mechanism 3 are fixedly arranged on the front side of the upper end surface of the bottom plate 1. A workbench 4 that can be turned up and down and adjusted in inclination angle in a vertical plane is hingedly installed on the upper end surface of the first column 2. A connecting rod 5 that can rotate in a vertical plane is installed on the left side or the right side of the first column 1. The lifting mechanism 3 and the connecting rod 5 are correspondingly located on the left and right sides of the first column 2. The upper end of the connecting rod 5 is slidably connected to the lower end surface of the workbench 4 through a sliding component that can slide along the left and right directions. The lifting head at the upper end of the lifting mechanism 3 is rotatably connected to the lower end surface of the workbench 4;

[0044] On one of the left end or the right end of the upper end surface of the workbench 4, a first box body 6 is installed, and on the other of them, a second box body 7 is installed. A workpiece mounting seat B facing the first box body 6 is installed on the second box body 7. A workpiece abutting seat C that cooperates with the workpiece mounting seat B to axially clamp the shaft body D on the ring gear shaft is installed on the first box body 6. A driving mechanism for driving the workpiece mounting seat B to drive the ring gear shaft to rotate around the axial center line of the shaft body D is also installed on the second box body 7;

[0045] A slide rail 1-1 along the left and right directions is provided on the rear side of the upper end surface of the bottom plate 1. A first sliding seat 1-2 is slidably installed on the slide rail 1-1. A second column 8 is fixedly arranged on the upper end surface of the first sliding seat 1-2. A lifting component is installed on the second column 8. A welding torch component 10 corresponding to the upper side of the workbench 4 is installed on the lifting component;

[0046] The driving mechanism, the lifting component, and the welding torch component 10 are all electrically connected to the control box 11.

[0047] Preferably, the second box body 7 is located at the left end of the upper end surface of the workbench 4, and the first box body 6 is located at the right end of the upper end surface of the workbench 4. A first driving motor 7-1 electrically connected to the control box 11 is installed on the rear side surface of the second box body 7. A speed reducer 7-2 drivingly connected to the output shaft of the first driving motor 7-1 is installed inside the second box body 7. A rotating sleeve 7-3 penetrating through the left and right end surfaces is provided inside the speed reducer 7-2. A shaft tube 7-4 is fixedly sleeved inside the rotating sleeve 7-3. A rotary joint seat 7-6 is fixedly provided at the left end of the shaft tube 7-4. The rotary joint seat 7-6 is rotatably installed on the mounting hole on the left end plate of the second box body 7. Two connecting nozzles 7-7 communicating with the shaft tube 7-4 are provided on the left end plate of the rotary joint seat 7-6. The right end of the shaft tube 7-4 penetrates through the right end surface of the second box body 7 and is fixedly provided with a second flange 7-5 located outside the right side of the second box body 7. The workpiece mounting seat B is fixedly installed on the right end surface of the second flange 7-5. The first driving motor 7-1, the speed reducer 7-2, the rotating sleeve 7-3, the shaft tube 7-4, the second flange 7-5 and the rotary joint seat 7-6 constitute the driving mechanism;

[0048] A cylinder 6-2 with a piston rod facing the left end is installed on the right side surface of the first box body 6. A connecting rod 6-3 vertically and movably penetrating through the left and right end surfaces of the first box body 6 is coaxially and fixedly provided at the end of the piston rod of the cylinder 6-2. A first flange 6-4 located outside the left side of the first box body 6 is fixedly provided at the left end of the connecting rod 6-3. The workpiece pressing seat C is fixedly installed on the left end surface of the first flange 6-4. The cylinder 6-2 is electrically connected to the control box 11. The rotary joint seat 7-6 is a commercially available existing product and will not be elaborated here. During use, one connecting nozzle 7-7 is connected to the cooling water inlet pipe and the other connecting nozzle 7-7 is connected to the cooling water return pipe. When the driving mechanism drives the gear ring type shaft to rotate through the workpiece mounting seat B, the rotary joint seat 7-6 drives the two connecting nozzles 7-7 to rotate in the mounting hole on the left end plate of the second box body 7, and the twisting and winding of the cooling water inlet pipe and the cooling water return pipe will not occur.

[0049] Further preferably, the workpiece mounting seat B is made of metal copper and includes a third flange B-1. A cap body B-2 with an opening facing the left side is coaxially and fixedly provided on the right end surface of the third flange B-1. A blind tube B-3 vertically extending into its cavity is fixedly provided at the center of the right end surface of the cap body B-2. The opening end of the blind tube B-3 extends to the outside of the right end surface of the cap body B-2, and a second annular tooth surface B-4 adapted to the first annular tooth surface E-1 on the gear ring type shaft is provided on the end surface of the opening end of the blind tube B-3. The workpiece mounting seat B is fixedly installed outside the right side surface of the second box body 7 through bolts passing through the corresponding mounting holes inside the third flange B-1 and the second flange 7-5;

[0050] The workpiece pressing seat C includes a shaft rod C-1. A conical tip C-2 extending coaxially to the left is provided at the left end of the shaft rod C-1, and a fourth flange C-3 is perpendicularly fixed to the right end. The workpiece pressing seat C is fixedly installed on the outer side of the left side surface of the first box body 6 through bolts passing through the corresponding mounting holes inside the fourth flange C-3 and the first flange 6-4.

[0051] Preferably, a second slide rail 4-1 along the left-right length direction is provided on the upper end surface of the workbench 4. A guide rod 4-2 along the left-right length direction is fixedly provided on the front side surface of the workbench 4. A first chute 6-1 adapted to the second slide rail 4-1 is provided at the bottom of the first box body 6. The first box body 6 is slidably installed at the right end of the guide rod 4-2 through the first chute 6-1. A second chute adapted to the second slide rail 4-1 is provided at the bottom of the second box body 7. The second box body 7 is slidably installed at the left end of the guide rod 4-2 through the second chute. The front side surfaces of the first box body 6 and the second box body 7 are respectively clamped and fixed to the guide rod 4-2 through a clamping assembly A.

[0052] Further preferably, the clamping assembly A includes a first plate body A-1 and a second plate body A-2. The first plate body A-1 is fixed to the front side surface of the first box body 6 or the front side surface of the second box body 7. Arc-shaped half grooves adapted to the guide rod 4-2 are respectively provided on the opposite side surfaces of the first plate body A-1 and the second plate body A-2. Screw holes are respectively provided on the upper and lower sides of the arc-shaped half grooves on the first plate body A-1 and the second plate body A-2. The first plate body A-1 is clamped to the rear side of the guide rod 4-2 through the arc-shaped half groove, and the second plate body A-2 is clamped to the front side of the guide rod 4-2 through the arc-shaped half groove. The first plate body A-1 and the second plate body A-2 are clamped and fixed to the guide rod 4-2 through screws screwed into the corresponding screw holes.

[0053] Further preferably, a third chute along the left-right length direction is provided on the lower end surface of the workbench 4. A slider 5-1 is hinged to the upper end of the connecting rod 5. The slider 5-1 is slidably installed in the third chute on the lower end surface of the workbench 4. The slider 5-1 and the third chute form the sliding assembly.

[0054] Preferably, the lifting assembly further includes a driving motor 1, a lead screw, two bearing seats, and a sliding seat 2. On the rear end of the right side of the second column 3, a third column 3-1 is fixedly provided. The two bearing seats are vertically and correspondingly spaced and fixedly provided on the front side of the third column 3-1. The lower end of the lead screw is inserted and fixedly provided in the inner ring of the lower bearing seat, and the upper end of the lead screw is inserted and fixedly provided in the inner ring of the upper bearing seat. The driving motor 1 is fixedly installed at the upper end of the front side of the third column 3-1. The upper end of the lead screw penetrates through the bearing inner ring of the upper bearing seat and is fixedly connected to the downward output shaft of the driving motor 1. The sliding seat 2 is provided with a threaded hole penetrating through the upper and lower end faces. The sliding seat 2 is screwed and installed on the lead screw between the two bearing seats through the threaded hole, and the left side of the sliding seat 2 is attached to the front end of the right side of the second column 3.

[0055] Further preferably, the welding torch assembly 2 includes a first support arm 2-1. The rear end of the first support arm 2-1 is vertically and fixedly provided on the front side of the sliding seat 2. A fixed clamping block 2-2 is fixedly provided at the front end of the first support arm 2-1. It further includes a movable clamping block 2-3 adapted to be docked with the fixed clamping block 2-2. Corresponding arc-shaped grooves are provided on the opposite side faces of the fixed clamping block 2-2 and the movable clamping block 2-3. The fixed clamping block 2-2 and the movable clamping block 2-3 are fixedly connected together by a bolt assembly passing through the corresponding mounting holes at the opposite docking ends of the two. And a second support arm 2-4 extending forward is clamped and fixed in the circular hole formed by the docking of the corresponding arc-shaped grooves on the fixed clamping block 2-2 and the movable clamping block 2-3. A first chuck 2-5 and a second chuck 2-6 corresponding to be located above the workbench 1 are provided at the front end of the second support arm 2-4. A welding torch 2-7 with a welding head located below is clamped and fixed in the first chuck 2-5. A welding wire 2-8 corresponding to be located below the welding head on the welding torch 2-7 is inserted through the second chuck 2-6.

[0056] Further preferably, the upper end of the first column 1 is rotatably installed in the middle of the lower end face of the workbench 1 through a first rotating shaft assembly 1-1. The lower end of the connecting rod 4 is rotatably installed on the left or right side of the first column 1 through a second rotating shaft assembly 4-2. The lifting mechanism 3 is a manual lifting hydraulic cylinder. The upper end of the piston rod of the lifting mechanism 3 is rotatably installed on the lower end face of the workbench 1 through a third rotating shaft assembly. The first rotating shaft assembly, the second rotating shaft assembly, and the third rotating shaft assembly are all existing rotating structure components, which are all commonly used rotating connection components for those skilled in the art and will not be elaborated here.

[0057] Further preferably, the control box 6 is fixedly provided on the upper end of the left side of the second column 3.

[0058] The operating principle of a welding device for a ring gear shaft of the present utility model:

[0059] Step 1: Adjust the fixed positions of the first box body 6 and the second box body 7 on the workbench 4 according to the dimensional specifications of the ring gear shaft to be welded, and make the distance between the opposite side surfaces of the workpiece mounting seat B and the workpiece pressing seat C greater than the length of the shaft body D on the ring gear shaft to be welded. By adjusting the overall height of the lifting mechanism 3 and cooperating with the connecting rod 5, make the workbench 4 at a suitable inclination angle. By pushing the second column 8, make the welding head of the welding torch 10-7 correspondingly located at the position corresponding to the ring gear E on the ring gear shaft to be welded clamped between the workpiece mounting seat B and the workpiece pressing seat C. Start the first driving motor 9 by turning the corresponding control knob on the control box 11, so that the output shaft of the first driving motor 9 drives the lead screw to rotate, thereby adjusting the welding head of the welding torch 10-7 to a suitable welding height. Connect one connecting pipe head 7-7 to the cooling water inlet pipe and the other connecting pipe head 7-7 to the cooling water return pipe;

[0060] Step 2: Sleeve the ring gear E from one end of the smooth section D-1 of the shaft body D to the junction position between the smooth section D-1 and the spiral section D-2, and make the first annular tooth surface E-1 of the ring gear E face the smooth section D-1 side, and the inner end edge of the other side surface of the ring gear E abut against the outer peripheral surface of the left end of the spiral section D-2;

[0061] Step 3: Insert the smooth section D-1 into the blind tube B-3 on the workpiece mounting seat B, and the first annular tooth surface E-1 of the ring gear E meshes with the second annular tooth surface B-4 on the opening end surface of the blind tube B-3. Start the air cylinder 6-2 by turning the corresponding control knob on the control box 11, then the piston rod of the air cylinder 6-2 extends and drives the workpiece pressing seat C to move towards the shaft body D until the conical tip C-2 presses against the free end surface of the spiral section D-2 (see the attachment Figures 12 to 13 );

[0062] Step 4: Start the welding work knob on the control box 11, then the second driving motor 7-1 drives the shaft body D and the ring gear E to start rotating through the speed reducer 7-2, the rotating sleeve 7-3, the shaft tube 7-4, the second flange 7-5, and the rotary joint seat 7-6. At the same time, the welding torch 10-7 and the welding wire 10-8 cooperate to continuously weld the inner end edge of the ring gear E and the outer peripheral side of the shaft body D circumferentially together.

[0063] In order to avoid the ring gear being in the welding high temperature state for a long time, the welding process in Step 4 can be divided into several intermittent processes, so that the ring gear after each short-time circumferential welding can be fully cooled by heat dissipation, ensuring that the hardness of the ring gear on the finished ring gear shaft after welding will not be significantly reduced.

[0064] A welding device for a ring gear type shaft of the present utility model. When welding a ring gear type shaft, the ring gear is sleeved at the junction position between the smooth section and the spiral section of the shaft body. Then, the assembled shaft body and the ring gear are installed and clamped between the workpiece mounting seat and the workpiece abutting seat. During the subsequent welding process, the driving mechanism drives the shaft body and the ring gear to rotate, and at the same time, the welding torch assembly continuously circumferentially welds the outer peripheral sides of the ring gear and the shaft body. Compared with the traditional method of manually welding ring gear type shafts, it overcomes the influence of human welding factors, ensures the reliability of the welding quality of ring gear type shafts, greatly reduces the manual welding workload, and helps to save labor costs. In order to prevent the ring gear from being in a welding high-temperature state for a long time, the welding process can also be divided into several intermittent processes, so that the ring gear after each short-time circumferential welding can fully dissipate heat and cool down, ensuring that the hardness of the ring gear on the finished ring gear type shaft after welding will not be significantly reduced. The operation is simple, reducing the technical requirements for welding operators, and at the same time improving the welding efficiency, meeting the requirements of large-scale delivery of ring gear type shafts.

[0065] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A welding device for a ring gear-like shaft, characterized in that, It includes a bottom plate (1). On the front side of the upper end surface of the bottom plate (1), a first column (2) and a lifting mechanism (3) are fixedly provided. On the upper end surface of the first column (2), a workbench (4) which can be turned up and down in a vertical plane to adjust the inclination angle is hingedly installed. On the left side or the right side of the first column (2), a connecting rod (5) which can rotate in a vertical plane is installed. And the lifting mechanism (3) and the connecting rod (5) are respectively located on the left and right sides of the first column (2). The upper end of the connecting rod (5) is slidably connected with the lower end surface of the workbench (4) through a sliding assembly which can slide along the left and right directions. The lifting head at the upper end of the lifting mechanism (3) is rotatably connected with the lower end surface of the workbench (4). On one of the left end or the right end of the upper end surface of the workbench (4), a first box (6) is installed, and on the other of them, a second box (7) is installed. On the second box (7), a workpiece mounting seat (B) facing the first box (6) is installed. On the first box (6), a workpiece pressing seat (C) which cooperates with the workpiece mounting seat (B) to axially clamp the shaft body (D) on the gear ring type shaft is installed. On the second box (7), a driving mechanism for driving the workpiece mounting seat (B) to drive the gear ring type shaft to rotate around the axial center line of the shaft body (D) is also installed. On the rear side of the upper end surface of the bottom plate (1), a first slide rail (1-1) along the left and right directions is provided. A first sliding seat (1-2) is slidably installed on the first slide rail (1-1). On the upper end surface of the first sliding seat (1-2), a second column (8) is fixedly provided. An elevating assembly is installed at the upper end of the second column (8). A welding torch assembly (10) corresponding to the upper side of the workbench (4) is installed on the elevating assembly. The driving mechanism, the elevating assembly and the welding torch assembly (10) are all electrically connected with a control box (11).

2. The welding device for the ring gear type shaft according to claim 1, characterized in that, The second box body (7) is located at the left end of the upper end face of the workbench (4), and the first box body (6) is located at the right end of the upper end face of the workbench (4). A second driving motor (7-1) electrically connected to the control box (11) is installed on the rear side face of the second box body (7). A speed reducer (7-2) drivingly connected to the output shaft of the second driving motor (7-1) is installed inside the second box body (7). A rotating sleeve (7-3) penetrating through the left and right end faces is provided inside the speed reducer (7-2). A shaft tube (7-4) is fixedly connected and inserted inside the rotating sleeve (7-3). A rotary joint seat (7-6) is fixedly provided at the left end of the shaft tube (7-4). The rotary joint seat (7-6) is rotatably installed on the mounting hole on the left end plate of the second box body (7). And two connecting nozzles (7-7) communicating with the shaft tube (7-4) are provided on the left end plate of the rotary joint seat (7-6). The right end of the shaft tube (7-4) penetrates through the right end face of the second box body (7) and is fixedly provided with a second flange (7-5) located outside the right side of the second box body (7). The workpiece mounting seat (B) is fixedly installed on the right end face of the second flange (7-5). The second driving motor (7-1), the speed reducer (7-2), the rotating sleeve (7-3), the shaft tube (7-4), the second flange (7-5) and the rotary joint seat (7-6) constitute the driving mechanism; A cylinder (6-2) with a piston rod facing the left end is installed on the right side face of the first box body (6). A connecting rod (6-3) vertically and movably penetrating through the left and right end faces of the first box body (6) is coaxially fixedly provided at the end of the piston rod of the cylinder (6-2). A first flange (6-4) located outside the left side of the first box body (6) is fixedly provided at the left end of the connecting rod (6-3). The workpiece pressing seat (C) is fixedly installed on the left end face of the first flange (6-4). The cylinder (6-2) is electrically connected to the control box (11).

3. The welding device for a ring gear type shaft according to claim 2, characterized in that, The workpiece mounting seat (B) is made of metal copper and includes a third flange (B-1). A cap body (B-2) with an opening facing the left side is coaxially fixedly provided on the right end face of the third flange (B-1). A blind tube (B-3) vertically fixedly extending towards the inside of its cavity is fixedly provided at the center of the right end face of the cap body (B-2). The opening end of the blind tube (B-3) extends to the outside of the right end face of the cap body (B-2), and a second annular tooth surface (B-4) adapted to the first annular tooth surface (E-1) on the tooth ring-like shaft is provided on the end face of the opening end of the blind tube (B-3). The workpiece mounting seat (B) is fixedly installed outside the right side face of the second box body (7) by bolts inserted into the corresponding mounting holes on the third flange (B-1) and the second flange (7-5); The workpiece pressing seat (C) includes a shaft rod (C-1). A taper tip (C-2) extending coaxially to the left is provided at the left end of the shaft rod (C-1), and a fourth flange (C-3) is vertically fixed at the right end. The workpiece pressing seat (C) is fixedly installed on the outer side of the left side face of the first box body (6) through bolts passing through the corresponding mounting holes in the fourth flange (C-3) and the first flange (6-4).

4. The welding device for the ring gear shaft according to claim 1, characterized in that, A second slide rail (4-1) along the left-right length direction is provided on the upper end face of the workbench (4). A guide rod (4-2) along the left-right length direction is fixedly provided on the front side face of the workbench (4). A first chute (6-1) adapted to the second slide rail (4-1) is provided at the bottom of the first box body (6). The first box body (6) is slidably installed at the right end of the guide rod (4-2) through the first chute (6-1). A second chute adapted to the second slide rail (4-1) is provided at the bottom of the second box body (7). The second box body (7) is slidably installed at the left end of the guide rod (4-2) through the second chute. Moreover, the front side faces of the first box body (6) and the second box body (7) are respectively clamped and fixed on the guide rod (4-2) through a clamping assembly (A).

5. The welding device for a ring gear type shaft according to claim 4, characterized in that, The clamping assembly (A) includes a first plate body (A-1) and a second plate body (A-2). The first plate body (A-1) is fixed on the front side face of the first box body (6) or the front side face of the second box body (7). Arc-shaped half grooves adapted to the guide rod (4-2) are respectively provided on the opposite side faces of the first plate body (A-1) and the second plate body (A-2). Moreover, screw holes are respectively provided on the first plate body (A-1) and the second plate body (A-2) on the upper and lower sides of the arc-shaped half grooves. The first plate body (A-1) is clamped on the rear side of the guide rod (4-2) through the arc-shaped half groove, and the second plate body (A-2) is clamped on the front side of the guide rod (4-2) through the arc-shaped half groove. The first plate body (A-1) and the second plate body (A-2) are clamped and fixed on the guide rod (4-2) through screws screwed into the corresponding screw holes.

6. The welding device for a ring gear shaft according to claim 5, characterized in that, A third chute along the left-right length direction is provided on the lower end face of the workbench (4). A slider (5-1) is hinged to the upper end of the connecting rod (5). The slider (5-1) is slidably installed in the third chute on the lower end face of the workbench (4). The slider (5-1) and the third chute form the sliding assembly.

7. The welding device for a ring gear type shaft according to claim 1, wherein, The lifting assembly comprises a driving motor 1 (9), a screw rod, two bearing seats and a sliding seat 2 (10-9). A column 3 (8-1) is fixedly arranged at the rear end of the right side surface of the column 2 (8). The two bearing seats are fixedly arranged on the front side surface of the column 3 (8-1) at corresponding vertical intervals. The lower end of the screw rod is connected and fixedly arranged in the inner ring of the bearing seat located on the lower side, and the upper end of the screw rod is connected and fixedly arranged in the inner ring of the bearing seat located on the upper side. The driving motor 1 (9) is fixedly installed on the upper end of the front side surface of the column 3 (8-1). The upper end of the screw rod passes through the inner ring of the bearing seat located on the upper side and is fixedly connected to the output shaft of the driving motor 1 (9) facing downward. The sliding seat 2 (10-9) is provided with screw holes passing through the upper and lower end surfaces. The sliding seat 2 (10-9) is screwed and installed on the screw rod located between the two bearing seats through the screw holes, and the left side of the sliding seat 2 (10-9) is in contact with the front end of the right side surface of the column 2 (8).

8. The welding device for the ring gear type shaft according to claim 7, characterized in that, The welding gun assembly (10) comprises a support arm 1 (10-1), the rear end of the support arm 1 (10-1) is vertically fixed on the front side of the sliding seat 2 (10-9), the front end of the support arm 1 (10-1) is fixed with a fixed clamping block (10-2), and also comprises a movable clamping block (10-3) that is docked and adapted with the fixed clamping block (10-2), the fixed clamping block (10-2) and the movable clamping block (10-3) are provided with corresponding arc grooves on the opposite sides, and the fixed clamping block (10-2) and the movable clamping block (10-3) are installed correspondingly on the opposite ends of the two by passing through them. The bolt assembly inside the hole is fixedly connected together, and a second support arm (10-4) extending forward is clamped and fixed in a circular hole formed by butting and splicing corresponding arc grooves on the fixed clamping block (10-2) and the movable clamping block (10-3), and a front end of the second support arm (10-4) is provided with a first chuck (10-5) and a second chuck (10-6) corresponding to those located above the workbench (4), a welding gun (10-7) with a welding head located below is clamped and fixed in the first chuck (10-5), and a welding wire (10-8) corresponding to those located below the welding head on the welding gun (10-7) is passed through the second chuck (10-6).

9. The welding device for a ring gear type shaft according to any one of claims 1 to 8, characterized in that, The upper end of the column one (2) is rotatably mounted on the middle part of the lower end surface of the workbench (4) through a rotating shaft assembly one (2-1), the lower end of the connecting rod (5) is rotatably mounted on the left side or right side surface of the column one (2) through a rotating shaft assembly two (5-2), the lifting mechanism (3) is a manual lifting hydraulic cylinder, and the upper end of the piston rod of the lifting mechanism (3) is rotatably mounted on the lower end surface of the workbench (4) through a rotating shaft assembly three.

10. The welding device for a ring gear shaft according to claim 9, characterized in that, The control box (11) is fixedly mounted on the upper left side surface of the second upright column (8).

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