Anti-deformation rudder shaft welding device

Abstract

The application discloses a kind of anti-deformation rudder shaft welding devices, the base top is fixed with mobile module, the mobile module top is installed with welding robot by moving seat left and right movement, the mobile module front is provided with the support mechanism for placing rudder shaft, and the front side of the support mechanism is transversely provided with mobile mechanism, the mobile mechanism is slidably installed with the polishing mechanism for cleaning the surface of rudder shaft, the rightmost end of the mobile mechanism is provided with driving mechanism, and the right end of the mobile mechanism is also provided with the positioning mechanism for limiting the polishing mechanism, rudder shaft is above support mechanism, rudder shaft can be constantly turned over, and the mobile mechanism and polishing mechanism are cooperatively arranged, so that the polishing mechanism can polish and clean the surface of rudder shaft in all directions, so that the oxide and impurities adhered to the surface of rudder shaft are removed, and the solder and base material are fully contacted in subsequent welding process, to improve the welding firmness.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rudder shaft welding, in particular to a deformation-preventing rudder shaft welding device. BACKGROUND

[0002] The rudder shaft is a fixed shaft used to replace the rudder column, on which the rudder blade is sleeved to rotate. During use, the rudder shaft gradually wears and its size exceeds the tolerance range, or local serious thermal mechanical fatigue occurs, thereby affecting the quality. There are many methods for repairing the rudder shaft, and the most commonly used traditional method is to use electric welding surfacing. Generally, the rudder shaft is disassembled and placed on a rack, and the worn surface is surfaced by manual or welding robot. The welding rod and the surface of the rudder shaft are melted, the welding rod material is filled in the surface of the rudder shaft and its cracks, and after cooling for a period of time, it is in a solidified state. Then, the repaired position surface is finished to make the size precision and roughness consistent with the size at the time of leaving the factory, thereby completing the repair.

[0003] Since the rudder shaft may have residues and impurities attached to its surface during long-term use, these impurities will shield the surface wear position, forming an isolation layer during welding, preventing the solder from fully contacting the base material, resulting in insecure welding, insufficient weld strength, and even porosity and other problems, thereby causing deformation. Therefore, we designed a deformation-preventing rudder shaft welding device. SUMMARY

[0004] The present application provides a deformation-preventing rudder shaft welding device, which solves the above problems.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0006] A deformation-preventing rudder shaft welding device, comprising a base, a moving module is fixed above the base, a welding robot is movably installed on the moving module through a moving seat, a support mechanism for placing the rudder shaft is arranged in front of the moving module, a moving mechanism is horizontally arranged on the front side of the support mechanism, a polishing mechanism for cleaning the surface of the rudder shaft is slidably installed on the moving mechanism, a driving mechanism is arranged at the rightmost end of the moving mechanism, the driving mechanism is connected with the polishing mechanism and the moving mechanism, and a positioning mechanism for limiting the polishing mechanism is further arranged at the right end of the moving mechanism, and the positioning mechanism is connected with the driving mechanism.

[0007] The moving mechanism comprises two groups of mounting seats symmetrically arranged above the base, a moving lead screw is rotatably arranged between the two groups of mounting seats through bearings, a moving guide rod is fixed between the two mounting seats and is located directly above the moving lead screw, a moving screw seat is threadedly arranged on the moving lead screw, a moving guide seat is slidably arranged on the moving guide rod, mounting cross plates are arranged on the rear sides of the moving screw seat and the moving guide seat, mounting plates are arranged on the rear sides of the two mounting cross plates, and the rotation of the moving lead screw can make the moving screw seat move leftward and rightward, so as to make the mounting plates move leftward and rightward along the moving guide rod.

[0008] Mounting rails are fixed to the rear sides of the mounting cross plates, two groups of fixed sliding plates are fixed to the mounting plates, the fixed sliding plates are slidably connected with the mounting rails, the mounting plates can move leftward and rightward on the mounting rails as needed, and when the position adjustment of the mounting plates is completed, the fixed sliding plates and the mounting rails can be fixed through bolts, so that the position of the polishing mechanism can be adjusted, and the sand belt on the polishing mechanism can be in contact with the outermost end surface of the rudder shaft.

[0009] The polishing mechanism comprises an unwinding device fixed above the rear side of the mounting plate, a winding device is arranged below the rear side of the mounting plate, a pressing device and a tensioning device are sequentially arranged from top to bottom between the unwinding device and the winding device, the pressing device and the tensioning device are slidably connected with the mounting plate, a sand belt is wound on the unwinding device, the sand belt sequentially passes through the pressing device and the tensioning device and is wound on the winding device, a rotating rod is slidably sleeved with the unwinding device and the winding device, the two ends of the two rotating rods are rotatably connected with the two mounting seats, gear belt wheels are arranged at the rightmost ends of the two rotating rods and are connected through a gear belt, and a positioning groove is arranged on the outer surface of the right end of the lower rotating rod.

[0010] The driving mechanism comprises a transmission gear one arranged at the rightmost end of the moving lead screw, a transmission gear two is arranged at the rightmost end of the lower rotating rod, a fixed shaft is fixed to the right mounting seat, a driving wheel is arranged on the fixed shaft, a driving tooth portion for engaging with the transmission gear one and the transmission gear two is arranged on the driving wheel, a transmission belt wheel is further arranged on the fixed shaft, a driving motor is arranged on the base, and the output shaft of the driving motor is connected with the fixed shaft through the transmission belt wheel and a belt.

[0011] The included angle α between the axis of the transmission gear one, the axis of the transmission gear two and the axis of the fixed shaft is greater than ninety degrees, the arc length of the driving tooth portion is one fourth of the whole circumference of the driving wheel, that is, the included angle β between the two outermost ends of the driving tooth portion and the axis of the fixed shaft is ninety degrees.

[0012] When the driving wheel rotates clockwise, the driving gear will mesh with the transmission gear, so that the driving wheel will rotate through the driving gear to rotate the moving lead screw, the rotation of the moving lead screw will move the moving screw seat to the right, the moving screw seat moving to the right will drive the mounting plate to move to the right along the moving guide rod, at this time the unwinding device, the winding device, the pressing device and the tensioning device mounted on the mounting plate will move linearly to the right, and the sand belt mounted between the unwinding device, the winding device, the pressing device and the tensioning device will also move, so that the entire sand belt polishes a part of the outer surface of the rudder shaft.

[0013] Preferably, the support mechanism comprises a support seat fixed above the base, two groups of driving shafts are rotatably installed above the support seat through the bearing seat, and the two groups of driving shafts are symmetrically arranged, three groups of annular adjustment sliding grooves are formed in the outer surface of the driving shaft, and the rightmost ends of the two groups of driving shafts are connected through a driving belt pulley and a belt.

[0014] The left end of one of the driving shafts is connected with an external speed reducer, the speed reducer can make the two driving shafts rotate synchronously and at low speed, and the rudder shaft above the support roller can rotate synchronously, so that the rudder shaft can be continuously turned over, and the surface of the rudder shaft can be fully cleaned, so that the welding robot can perform omnidirectional welding on the outer surface of the rudder shaft during welding, and the rudder shaft can be completely welded.

[0015] Two groups of adjustment rails are symmetrically arranged above the support seat, a plurality of support assemblies are linearly arranged on the adjustment rails, each support assembly comprises two groups of support frames mounted on the two adjustment rails, a support roller is rotatably installed between the two groups of support frames, the two ends of the support roller penetrate through the two support frames and are arranged outside the two support frames, a penetrating cavity is formed in the left and right of the support roller, three evenly distributed adjustment sliding blocks are arranged in the penetrating cavity, the driving shaft penetrates through the penetrating cavity and is slidably connected with the support roller, and the three adjustment sliding blocks are slidably arranged in the three adjustment sliding grooves.

[0016] The support frame can move left and right above the support seat along the adjustment rail, so that the position of the support assembly can be changed as needed, and after the position of the support frame is fixed, it can be fixed with the support seat by using bolts, so that the support roller can be in the position where the rudder shaft does not need to be repaired, and can support the rudder shaft without contacting the subsequent welding points and causing pressure loss.

[0017] Preferably, the unwinding structure is completely consistent with the winding structure, the unwinding structure comprises two groups of fixed shaft frames symmetrically arranged on the mounting plate, a shaft sleeve is rotatably arranged between the two groups of fixed shaft frames, a winding sleeve is rotatably sleeved on the outer ring of the shaft sleeve, two side edge rings are respectively fixed at the two ends of the winding sleeve, the side edge rings are fixed with the shaft sleeve through screws, and three linkage blocks are circumferentially arranged in the sleeve cavity formed at the two ends of the shaft sleeve;

[0018] The outer ring of the winding sleeve is used for winding the abrasive belt. In use, one end of the abrasive belt is adhered to the winding sleeve of the unwinding structure, then the winding sleeve is rotated to wind the abrasive belt on the winding sleeve of the unwinding structure, then the other end of the abrasive belt is passed through the surface of the pressing member and the tensioning member and adhered to the winding sleeve of the winding structure, finally the side edge rings are fixed with the shaft sleeve through screws, and the installation of the abrasive belt is completed.

[0019] The outer ring surface of the rotating rod is provided with three evenly distributed linkage grooves, the rotating rod is slidably connected with the shaft sleeve through the sleeve cavity, and the three linkage blocks are slidably arranged in the three linkage grooves. The linkage blocks integrally connect the shaft sleeve and the rotating rod, the shaft sleeve can rotate together with the rotating rod, and the shaft sleeve can also move left and right along the rotating rod, so that the entire unwinding structure and winding structure slide left and right along the rotating rod.

[0020] Preferably, the pressing member and the tensioning member are consistent in structure, four circular holes are arranged on the mounting plate in a rectangular distribution, the pressing member comprises an adjusting rod slidably sleeved in the upper two circular holes, an adjusting ring is screw-mounted on the front side of the adjusting rod, an installation shaft seat is fixed to the rear ends of the two adjusting rods, an abutting spring is sleeved on the adjusting rod, and the two ends of the abutting spring abut against the mounting plate and the installation shaft seat, respectively. An axle roller is rotatably arranged on the installation shaft seat, and the outer ring surface of the axle roller is in rolling contact with the abrasive belt.

[0021] By loosening the screw on the adjusting ring, the adjusting ring can slide forward and backward on the adjusting rod, so that the length of the adjusting rod at the rear end of the mounting plate can be changed, the position of the axle roller at the rear end of the mounting plate can be changed, and the surface of the abrasive belt can be arc-shapedly attached to the outer surface of the rudder shaft.

[0022] Preferably, the positioning mechanism comprises a deflection rod, the middle of the deflection rod is rotatably arranged on the left side surface of the right mounting seat through a shaft pin, a connecting groove is arranged at the front end and the rear end of the deflection rod, respectively, a connecting pin is slidably arranged in the connecting groove, a positioning rod is rotatably connected to the connecting pin at the rear end, and a jacking rod is rotatably connected to the connecting pin at the front end.

[0023] The left end of the fixed shaft passes through the right mounting seat on the left side thereof, and a jacking wheel is mounted on the left end of the fixed shaft, and an outer ring of the jacking wheel is integrally formed with a jacking arc portion, and the jacking rod is in sliding contact with the outer surface of the jacking wheel.

[0024] Preferably, the jacking rod and the positioning rod are both provided with lifting grooves, and two lifting sliders are respectively arranged in the two lifting grooves in a sliding mode, and the lifting sliders are fixed to the left side surface of the right mounting seat, and a compression spring is sleeved in the lifting groove of the jacking rod, and the two ends of the compression spring are respectively in abutment with the lifting slider and the bottom end of the lifting groove.

[0025] When the driving tooth portion is disengaged from the second transmission gear, the bottom end of the jacking rod is in contact with the jacking arc portion, and the bottom end of the positioning rod is inserted into the positioning groove of the lower rotating rod.

[0026] When the driving tooth portion approaches the second transmission gear, the positioning rod is disengaged from the positioning groove, and when the driving tooth portion is engaged with the second transmission gear, the positioning rod is just disengaged from the positioning groove at this time, thereby releasing the limitation of the rotating rod, so that the rotating rod can rotate with the driving tooth portion.

[0027] The beneficial effects of the present application are as follows:

[0028] 1. The support mechanism is arranged in front of the welding robot, the rudder shaft is above the support mechanism, and the rudder shaft can continuously rotate, the moving mechanism and the polishing mechanism are arranged in cooperation, the polishing mechanism can move linearly under the action of the moving mechanism, so that the polishing mechanism can polish and clean the surface of the rudder shaft in all directions, the oxides and impurities attached to the surface of the rudder shaft are removed, the solder is in full contact with the base material in the subsequent welding process, the welding firmness is improved, and the weld strength is greater.

[0029] 2. The polishing mechanism is provided with a winding member and an unwinding member for unwinding and winding the abrasive belt, the two are connected with the driving mechanism through the rotating rod, and the driving mechanism is intermittently connected with the moving mechanism and the rotating rod, so that the abrasive belt can be replaced after polishing a part of the rudder shaft, avoiding incomplete contact caused by wear and improving the polishing effect.

[0030] 3. The positioning mechanism is arranged on the driving mechanism to position the abrasive belt when it does not need to be replaced, avoiding self-rotation of the abrasive belt caused by contact with the rudder shaft. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a front view of a schematic diagram of a deformation-preventing rudder shaft welding device according to the present application;

[0032] Figure 2 It is a left and right isometric drawing of Figure 1 .

[0033] Figure 3 for Figure 2 Isometric views of the front and rear angles without a rudder shaft;

[0034] Figure 4 for Figure 3 Enlarged schematic diagram of a portion of the central support structure;

[0035] Figure 5 for Figure 2 A partially enlarged schematic diagram of the moving mechanism and the grinding mechanism;

[0036] Figure 6 for Figure 5 Axonometric projections of the front and rear angles;

[0037] Figure 7 for Figure 6 Structural diagram of the tensioning component, pressing component, winding component, and unwinding component;

[0038] Figure 8 for Figure 7 Axonometric projections of the front and rear angles;

[0039] Figure 9 for Figure 2 Enlarged view of point A in the middle;

[0040] Figure 10 for Figure 1 Enlarged view of point B in the middle;

[0041] Figure 11 This is a schematic diagram of the right side structure of the drive mechanism and the positioning mechanism;

[0042] Figure 12 This is a schematic diagram of the left side structure of the drive mechanism and the positioning mechanism.

[0043] The figure label: 1, base; 2, moving module; 3, welding robot; 31, moving seat; 4, support mechanism; 41, support seat; 411, adjusting track; 42, support assembly; 421, support frame; 422, support roller; 423, adjusting sliding block; 43, drive shaft; 431, adjusting sliding groove; 44, drive pulley; 5, moving mechanism; 51, mounting seat; 52, moving lead screw; 521, moving screw seat; 53, moving guide rod; 531, moving guide seat; 54, installation cross plate; 541, installation track; 55, mounting plate; 551, fixed sliding plate; 6, polishing mechanism; 61, unwinding piece; 611, fixed shaft frame; 612, winding sleeve; 613, side ring; 614, shaft sleeve; 615, linkage block; 62, abrasive belt; 63, pressing piece; 631, mounting shaft seat; 632, shaft roller; 633, adjusting rod; 634, abutting spring; 635, adjusting ring; 64, winding piece; 65, tensioning piece; 66, rotating rod; 661, linkage groove; 662, positioning groove; 67, toothed pulley; 7, driving mechanism; 71, driving motor; 72, transmission gear one; 73, transmission gear two; 74, drive wheel; 741, driving teeth; 75, fixed shaft; 8, positioning mechanism; 81, jacking rod; 811, lifting groove; 812, lifting sliding block; 813, pressing spring; 82, deflection rod; 821, connecting groove; 822, connecting pin; 83, positioning rod; 84, jacking wheel; 841, jacking arc part. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0045] Reference Figures 1-12 A deformation-preventing rudder shaft welding device, comprising a base 1, a moving module 2 is fixed above the base 1, a welding robot 3 is movably installed above the moving module 2 through a moving seat 31, a support mechanism 4 for placing a rudder shaft is arranged in front of the moving module 2, a moving mechanism 5 is arranged on the front side of the support mechanism 4 in a transverse manner, a polishing mechanism 6 for cleaning the surface of the rudder shaft is slidably installed on the moving mechanism 5, a driving mechanism 7 is arranged at the rightmost end of the moving mechanism 5, the driving mechanism 7 is connected with the polishing mechanism 6 and the moving mechanism 5, and a positioning mechanism 8 for limiting the polishing mechanism 6 is further arranged at the right end of the moving mechanism 5, and the positioning mechanism 8 is connected with the driving mechanism 7;

[0046] The moving mechanism 5 comprises two groups of mounting seats 51 symmetrically arranged above the base 1, a moving lead screw 52 rotatably arranged between the two groups of mounting seats 51 through a bearing, a moving guide rod 53 fixed between the two mounting seats 51 and located directly above the moving lead screw 52, a moving screw seat 521 threadedly arranged on the moving lead screw 52, a moving guide seat 531 slidingly arranged on the moving guide rod 53, and mounting cross plates 54 arranged at the rear sides of the moving screw seat 521 and the moving guide seat 531. The rear sides of the two mounting cross plates 54 are provided with mounting plates 55. The moving screw seat 521 can move leftward and rightward by forward rotation or reverse rotation of the moving lead screw 52. During the leftward and rightward movement of the moving screw seat 521, the mounting plates 55 can move together through the mounting cross plates 54 below. The mounting cross plates 54 above can slide leftward and rightward along the moving guide rod 53 under the action of the moving guide seat 531, so that the mounting plates 55 can stably move leftward and rightward under the action of the mounting cross plates 54, the moving guide seat 531 and the moving screw seat 521.

[0047] The rear sides of the mounting cross plates 54 are fixed with mounting rails 541, and the mounting plates 55 are fixed with two groups of fixed sliding plates 551 which are slidingly connected with the mounting rails 541. Screw holes are arranged on the fixed sliding plates, and bolts are threadedly connected in the screw holes. The mounting plates 55 can move leftward and rightward along the mounting rails 541 as required. When the position adjustment of the mounting plates 55 is completed, the bolts are tightened to tightly press against the surfaces of the mounting rails 541, so that the fixed sliding plates 551 and the mounting rails 541 are fixed, thereby the position of the polishing mechanism 6 can be adjusted to make the abrasive belt 62 on the polishing mechanism 6 contact the outermost end surface of the rudder shaft.

[0048] The polishing mechanism 6 comprises a pay-off device 61 fixed above the rear side of the mounting plate 55, and a take-up device 64 arranged below the rear side of the mounting plate 55. The pay-off device 61 and the take-up device 64 are sequentially arranged from top to bottom with a pressing device 63 and a tensioning device 65 therebetween. The pressing device 63 and the tensioning device 65 are slidingly connected with the mounting plate 55. The pay-off device 61 is wound with an abrasive belt 62. The abrasive belt 62 sequentially passes through the pressing device 63 and the tensioning device 65 and is wound on the take-up device 64. The surface of the abrasive belt 62 is implanted with short and small metal brushes. The metal brushes can extend into narrow spaces as much as possible, so that the abrasive belt 62 can polish.

[0049] A rotating rod 66 is slidingly sleeved on the pay-off device 61 and the take-up device 64, and the two ends of the two rotating rods 66 are rotatably connected with the two mounting seats 51. The rightmost ends of the two rotating rods 66 are provided with toothed belt wheels 67, and the two toothed belt wheels 67 are connected through a toothed belt. The outer ring surface of the right end of the lower rotating rod 66 is provided with a positioning groove 662.

[0050] The drive mechanism 7 includes a transmission gear 72 installed at the rightmost end of the movable lead screw 52, ​​a transmission gear 73 installed at the rightmost end of the lower rotating rod 66, a fixed shaft 75 fixed on the right mounting base 51, a drive wheel 74 installed on the fixed shaft 75, a drive tooth 741 provided on the drive wheel 74 for meshing with the transmission gear 72 and the transmission gear 73, a transmission pulley also installed on the fixed shaft 75, and a drive motor 71 installed on the base 1. The output shaft of the drive motor 71 is connected to the fixed shaft 75 through the transmission pulley and belt.

[0051] The angle α between the axis of transmission gear 1 72, the axis of transmission gear 2 73 and the axis of fixed shaft 75 is greater than 90 degrees. The arc length of drive tooth 741 is one-quarter of the circumference of the entire drive wheel 74. That is, the angle β between the two outermost ends of drive tooth 741 and the axis of fixed shaft 75 is 90 degrees.

[0052] When the drive wheel 74 rotates clockwise, the drive teeth 741 will mesh with the transmission gear 72. Figure 11 (Taking the engagement of the drive wheel 74 with the transmission gear 72 as an example), when the drive wheel 74 rotates, it will cause the moving screw 52 to rotate through the drive tooth 741. The rotation of the moving screw 52 will cause the moving screw seat 521 to move to the right. The moving screw seat 521 will drive the mounting plate 55 to move to the right along the moving guide rod 53. At this time, the unwinding component 61, the winding component 64, the pressing component 63 and the tensioning component 65 installed on the mounting plate 55 will all move to the right in a straight line. The sanding belt 62 installed between the unwinding component 61, the winding component 64, the pressing component 63 and the tensioning component 65 will also move in a straight line, so that the entire sanding belt 62 will polish a part of the outer surface of the rudder shaft.

[0053] Then the drive gear 741 will mesh with the transmission gear 73. At this time, the lower rotating rod 66 will rotate one or more times (the number of rotations of the rotating rod 66 is related to the transmission ratio of the transmission gear 73 and the drive gear 741, and the transmission ratio is an integer multiple). Since the upper and lower rotating rods 66 are connected by a toothed belt and a toothed pulley 67, both rotating rods 66 will rotate clockwise. In this way, the unwinding part 61 and the winding sleeve 612 on the winding part 64 mounted on the rotating rod 66 will rotate clockwise. The part of the sanding belt 62 that contacts the rudder shaft surface will be wound onto the winding sleeve 612 of the winding part 64. The new part of the sanding belt 62 will contact the rudder shaft surface and grind it.

[0054] When the abrasive belt 62 is in the process of polishing the surface thereof, the rudder shaft continues to rotate under the action of the supporting roller 422, so that the surface is fully polished. After the rudder shaft rotates for several rounds, the driving teeth 741 will be re-engaged with the driving gear 72, and the driving gear 72 drives the moving screw 52 to rotate for one or more rounds. At this time, the abrasive belt 62 advances by one unit distance (i.e. the abrasive belt 62 advances by a distance of one width of the abrasive belt 62, the number of rounds of rotation of the moving screw 52 is related to the transmission ratio of the driving gear 72 and the driving teeth 741, and the transmission ratio is an integer multiple), and the abrasive belt 62 will contact and polish other parts of the rudder shaft. In this way, the entire surface of the rudder shaft can be polished and cleaned.

[0055] The supporting mechanism 4 comprises a supporting seat 41 fixed above the base 1, two groups of driving shafts 43 are rotatably installed above the supporting seat 41 through bearing seats, and the two groups of driving shafts 43 are symmetrically arranged. The rightmost ends of the two groups of driving shafts 43 are connected through a driving belt pulley 44 and a belt, and three groups of annular adjustment sliding grooves 431 are formed on the outer circumferential surface of the driving shaft 43.

[0056] The left end of one of the driving shafts 43 is connected with an external speed reducer motor. The speed reducer motor can synchronously and slowly rotate the two driving shafts 43. The rudder shaft above the supporting roller 422 can rotate with it, so that the rudder shaft can continuously turn and be fully cleaned. In this way, the welding robot 3 can also perform omnidirectional welding on the outer circumferential surface of the rudder shaft during welding, so that the rudder shaft can be completely welded.

[0057] The supporting seat 41 is symmetrically provided with two groups of adjustment rails 411 above. A plurality of supporting assemblies 42 are linearly arranged on the adjustment rails 411. Each supporting assembly 42 comprises two groups of supporting frames 421 respectively installed on the two adjustment rails 411. A supporting roller 422 is rotatably installed between the two groups of supporting frames 421. The two ends of the supporting roller 422 respectively penetrate through the two supporting frames 421 and are arranged outside the two supporting frames 421. A penetrating cavity is formed in the left and right of the supporting roller 422. Three evenly distributed adjustment sliding blocks 423 are arranged in the penetrating cavity. The driving shaft 43 penetrates through the penetrating cavity and is slidably connected with the supporting roller 422. The three adjustment sliding blocks 423 are respectively slidably arranged in the three adjustment sliding grooves 431.

[0058] A horizontal plate is fixed between the two support frames 421, and threaded holes are formed in the horizontal plate. The support frames 421 can move left and right above the support seat 41 along the adjusting track 411, so that the position of the support assembly 42 can be changed as required. After the position of the support frame 421 is fixed, the bolt is screwed into the threaded hole of the horizontal plate, so that the bolt is tightly pressed against the upper surface of the support seat 41, and the fixing of the support assembly 42 is completed. In this way, the support roller 422 is located at a position where the rudder shaft does not need to be repaired, and can be supported without contacting the subsequent welding points and causing pressure loss.

[0059] The unwinding part 61 is identical in structure to the winding part 64. The unwinding part 61 includes two groups of fixed shaft frames 611 symmetrically arranged on the mounting plate 55. A shaft sleeve 614 is rotatably installed between the two groups of fixed shaft frames 611. A winding sleeve 612 is rotatably sleeved on the outer ring of the shaft sleeve 614. Two side edge rings 613 are fixed at the two ends of the winding sleeve 612, respectively. The side edge rings 613 are fixed to the shaft sleeve 614 by screws. The shaft sleeve 614 penetrates the ends to form sleeve cavities, and three circumferentially distributed linkage blocks 615 are arranged in the sleeve cavities.

[0060] The outer ring of the winding sleeve 612 is used to wind the abrasive belt 62. During use, one end of the abrasive belt 62 is adhered to the winding sleeve 612 of the unwinding part 61. Then, the winding sleeve 612 is rotated to wind the abrasive belt 62 on the winding sleeve 612 of the unwinding part 61. Then, the other end of the abrasive belt 62 is passed through the surface of the pressing part 63 and the tensioning part 65 and adhered to the winding sleeve 612 of the winding part 64. Finally, the side edge rings 613 are fixed to the shaft sleeve 614 by screws. At this time, the installation of the abrasive belt 62 is completed.

[0061] Three evenly distributed linkage grooves 661 are formed in the outer ring surface of the rotating rod 66. The rotating rod 66 is slidably connected to the shaft sleeve 614 through the sleeve cavities, and the three linkage blocks 615 are slidably arranged in the three linkage grooves 661. The linkage blocks 615 connect the shaft sleeve 614 and the rotating rod 66 into one body. When the rotating rod 66 rotates, the shaft sleeve 614 rotates together. The shaft sleeve 614 can also move left and right along the rotating rod 66, so that the unwinding part 61 and the winding part 64 slide left and right along the rotating rod 66 together.

[0062] The pressing member 63 is consistent with the tensioning member 65 in structure, four circular holes in a rectangular distribution are formed on the mounting plate 55, the pressing member 63 comprises an adjusting rod 633 slidably sleeved in the upper two circular holes, the adjusting ring 635 is screw-mounted on the front side portion of the adjusting rod 633, the mounting shaft seat 631 is fixed to the rear ends of the two adjusting rods 633, the abutting spring 634 is sleeved on the adjusting rod 633, the two ends of the abutting spring 634 abut against the mounting plate 55 and the mounting shaft seat 631 respectively, the shaft roller 632 is rotatably mounted on the mounting shaft seat 631, and the abrasive belt 62 is in rolling contact with the outer ring surface of the shaft roller 632;

[0063] A screw hole is formed on the adjusting ring and extends inwardly to the adjusting rod 633, the screw hole is threadedly connected with a screw, the screw is loosened on the adjusting ring 635, so that the screw is separated from the screw hole of the adjusting rod 633, the adjusting ring 635 can slide on the adjusting rod 633, the length of the adjusting rod 633 at the rear end of the mounting plate 55 can be changed, then the screw is tightened, the position of the shaft roller 632 at the rear end of the mounting plate 55 can be changed, the shaft roller 632 in the pressing member 63 and the tensioning member 64 can make the abrasive belt 62 close to the rudder shaft on the supporting roller 422, the surface of the abrasive belt 62 can be arc-shaped and attached to the outer surface of the rudder shaft, when the rudder shaft rotates under the action of the supporting roller 422, the abrasive belt can polish the surface of the rudder shaft, and the metal brush on the abrasive belt can extend into the narrow space as much as possible to polish, so that the oxides and impurities attached to the surface of the rudder shaft are polished and removed, and the surface of the rudder shaft is smooth.

[0064] The positioning mechanism 8 comprises a deflection rod 82, the middle portion of the deflection rod 82 is rotatably mounted on the left side surface of the right mounting seat 51 through a shaft pin, a connecting groove 821 is formed on the front and rear ends of the deflection rod 82 respectively, a connecting pin 822 is slidably mounted in the connecting groove 821, the rear end connecting pin 822 is rotatably connected with a positioning rod 83, and the front end connecting pin 822 is rotatably connected with a jacking rod 81.

[0065] The left end of the fixed shaft 75 penetrates through the right mounting seat 51 and is located on the left side thereof, and the jacking wheel 84 is mounted on the left end of the fixed shaft 75, the jacking wheel 84 is integrally formed with a jacking arc portion 841 on the outer ring thereof, and the jacking rod 81 is in sliding contact with the outer surface of the jacking wheel 84.

[0066] The jacking rod 81 and the positioning rod 83 are both provided with lifting grooves 811 formed through the surfaces thereof, and a lifting slider 812 is slidably arranged in each of the two lifting grooves 811, the lifting slider 812 is fixed to the left side surface of the right mounting seat 51, the lifting groove 811 of the jacking rod 81 is sleeved with a downward spring 813, and the two ends of the downward spring 813 abut against the lifting slider 812 and the bottom end of the lifting groove 811 respectively.

[0067] When the driving teeth 741 is disengaged from the meshing with the transmission gear two 73, the lower end of the jacking rod 81 is in contact with the jacking arc part 841, at this time the jacking rod 81 will move upwards along the lifting slider 812 in the lifting groove 811, when the jacking rod 81 moves upwards, the front end of the deflection rod 82 will be deflected upwards around the shaft pin in the middle, and the rear end of the deflection rod 82 will be deflected downwards, the connecting pin 822 at the rear end of the deflection rod 82 will press the positioning rod 83 downwards, so that the positioning rod 83 slides downwards along the lifting slider 812 in the lifting groove 811, so that the bottom end of the positioning rod 83 can be inserted into the positioning groove 662 of the lower rotating rod 66, limiting the rotation of the rotating rod 66, since the two rotating rods 66 are connected by a toothed belt, so that the two rotating rods 66 are positioned together and cannot rotate, so that the unwinding device 61 and the winding device 64 mounted on the rotating rod 66 cannot rotate, avoiding the possibility of the sand belt 62 rotating;

[0068] Since the jacking rod 81 is also provided with a downward pressing spring 813, the jacking rod 81 is subjected to a downward moving force, when the driving teeth 741 approaches the transmission gear two 73, at this time the jacking rod 81 gradually moves downwards along the jacking arc part 841, at this time the front end of the deflection rod 82 is deflected downwards around the shaft pin in the middle, and the rear end of the deflection rod 82 will be deflected upwards, the connecting pin 822 at the rear end of the deflection rod 82 will pull the positioning rod 83 upwards, so that the positioning rod 83 is disengaged from the positioning groove 662, and when the driving teeth 741 is meshed with the transmission gear two 73, at this time the positioning rod 83 is just disengaged from the positioning groove 662, releasing the limiting of the rotating rod 66, so that it can rotate with the driving teeth 741.

[0069] Working principle: when welding and repairing the surface of the rudder shaft, first place the polishing mechanism 6 at the left end of the base 1, at this time the polishing mechanism 6 moves from left to right, and a new sand belt 62 is installed on the unwinding device 61, and the unfixed end of the sand belt 62 passes through the pressing device 63, the tensioning device 65 and is fixed with the winding device 64 in sequence, when the polishing mechanism 6 is at the right end of the base 1 and moves left, the sand belt 62 is wound on the winding device 64, and passes through the tensioning device 65, the pressing device 63 and is fixed with the unwinding device 61 in sequence;

[0070] Then use the lifting equipment to place the rudder shaft above the supporting roller 422 of the supporting mechanism 4, and when placing, the position of the rudder shaft that needs to be repaired should not be above the supporting roller 422, and the left end of the rudder shaft should be as close to the sand belt 62 in the polishing mechanism 6 as possible, so that in the subsequent welding process, the supporting roller 422 will not be in contact with the welding point to cause extrusion deformation;

[0071] After the rudder shaft is placed, the sand belt 62 in the polishing mechanism 6 is attached to the surface of the rudder shaft. Specifically, first, the screw between the fixed slide plate 551 and the mounting rail 541 is loosened, so that the mounting plate 55 can move along the mounting rail 541, so that the unwinding part 61, the winding part 64, the pressing part 63 and the tensioning part 65 on the mounting plate 55 can move, so that the left end of the sand belt 62 is aligned with the left end of the rudder shaft (the shaft necks at both ends of the rudder shaft are small in size and are polished manually), then the adjusting ring 635 on the adjusting rod 633 of the pressing part 63 and the tensioning part 65 is loosened, the pressing part 63 and the tensioning part 65 can move backward as a whole, so that the surface of the sand belt 62 is attached to the surface of the rudder shaft, then the adjusting ring 635 is fixed by a screw, so that the pressing part 63 and the tensioning part 65 cannot slide backward;

[0072] At this time, the power supply of the external reduction motor connected to the left end of the driving shaft 43 is turned on, the reduction motor can make the two driving shafts 43 rotate synchronously and at low speed, the rudder shaft above the supporting roller 422 can rotate, so that the rudder shaft is continuously turned over, and the sand belt 62 will polish the part in contact with the rudder shaft;

[0073] Then the power supply of the driving motor 71 is turned on, the driving motor 71 will make the driving wheel 74 rotate clockwise through the fixed shaft 75, when the driving tooth part 741 is about to engage with the transmission gear two 73, the jacking rod 81 gradually moves downward along the jacking arc part 841, the front end of the deflection rod 82 is deflected downward around the shaft pin in the middle, the connecting pin 822 at the rear end of the deflection rod 82 pulls the positioning rod 83 upward, so that the positioning rod 83 is separated from the positioning groove 662, and the positioning of the rotating rod 66 is released, at this time the rotating rod 66 can rotate with the driving wheel 74;

[0074] At this time, the lower rotating rod 66 will rotate one or more turns, since the upper and lower rotating rods 66 are connected through the tooth belt and the toothed belt wheel 67, both rotating rods 66 will rotate clockwise, so that the unwinding part 61 and the winding part 64 on the winding sleeve 612 on the rotating rod 66 will rotate clockwise, the part of the sand belt 62 in contact with the surface of the rudder shaft will be wound onto the winding sleeve 612 of the winding part 64, and the new part of the sand belt 62 will be in contact with the surface of the rudder shaft and polish it;

[0075] When the abrasive belt 62 is in the process of polishing its surface, the rudder shaft continues to rotate under the action of the supporting roller 422, thereby fully polishing the surface, after several rotations of the rudder shaft, the driving teeth 741 disengage from the meshing with the transmission gear two 73, and will mesh with the transmission gear one 72, when the driving teeth 741 disengage from the meshing with the transmission gear two 73, the positioning rod 83 slides downward along the lifting slider 812 in the lifting groove 811, thereby enabling the bottom end of the positioning rod 83 to be inserted into the positioning groove 662 of the rotating rod 66 below, limiting the rotation of the rotating rod 66;

[0076] When the driving teeth 741 disengage from the meshing with the transmission gear one 72, the transmission gear one 72 rotates the moving screw 52 by one revolution, at this time the abrasive belt 62 advances by one unit distance, and the abrasive belt 62 will contact and polish other parts of the rudder shaft, and so on, thereby polishing and cleaning the entire surface of the rudder shaft;

[0077] After the surface of the rudder shaft is cleaned, the oxides and impurities attached to the surface of the rudder shaft are removed, and the smooth surface is exposed to the outside, then the moving module 2 moves the welding robot 3 left and right to the position required for welding, and the welding robot 3 welds and repairs the surface of the rudder shaft, after welding and a period of time, the rudder shaft is lifted again by the hoisting equipment and moved to the machining machine tool for finishing, so that the surface precision is consistent with that at the time of leaving the factory.

[0078] By providing the support mechanism 4 in front of the welding robot 3, the rudder shaft is above the support mechanism 4, and the rudder shaft can be continuously turned, and the moving mechanism 5 and the polishing mechanism 6 are provided in cooperation, the polishing mechanism 6 can move linearly under the action of the moving mechanism 5, thereby enabling the polishing mechanism 6 to polish and clean the surface of the rudder shaft in all directions, so that the oxides and impurities attached to the surface are removed, and the solder and the base material are in full contact during the subsequent welding process, thereby improving the welding firmness and increasing the weld strength, so that the rudder shaft is not easy to deform;

[0079] The polishing mechanism 6 is provided with the winding member 64 and the unwinding member 61 for unwinding and winding the abrasive belt 62, both of which are connected with the driving mechanism 7 through the rotating rod 66, and the driving mechanism 7 is intermittently connected with the moving mechanism 5 and the rotating rod 66, so that the abrasive belt 62 can be replaced after polishing a part of the rudder shaft, thereby improving the polishing effect;

[0080] By providing the positioning mechanism 8 on the driving mechanism 7, the positioning mechanism 8 positions the abrasive belt 62 when it does not need to be replaced, thereby avoiding the self-rotation of the abrasive belt 62 caused by the contact with the rudder shaft.

[0081] In the description of the application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0082] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0083] The above is only the preferred specific implementation of the application, but the protection scope of the application is not limited thereto, and any person skilled in the art can make equivalent replacements or changes within the technical scope disclosed by the application according to the technical scheme and inventive concept of the application, which should be covered within the protection scope of the application.

Claims

1. A deformation-proof rudder shaft welding device, characterized by comprising: The utility model provides a rudder shaft surface cleaning device, including base (1), the mobile module (2) is fixed above base (1), the welding robot (3) is installed through mobile seat (31) left and right movement mode above mobile module (2), the support mechanism (4) for placing rudder shaft is provided with in mobile module (2) front, and the front side of support mechanism (4) is provided with moving mechanism (5) laterally, the polishing mechanism (6) for cleaning the surface of rudder shaft is installed in moving mechanism (5) left and right slidingly, the rightmost end of moving mechanism (5) is provided with drive mechanism (7), drive mechanism (7) is connected with polishing mechanism (6), moving mechanism (5) still is provided with the positioning mechanism (8) for the limiting of polishing mechanism (6) in the right end of moving mechanism (5), and positioning mechanism (8) is connected with drive mechanism (7), The moving mechanism (5) includes two groups of mounting seats (51) symmetrically arranged above the base (1), two groups of the mounting seats (51) are rotatably installed with a moving lead screw (52) between them, a moving guide rod (53) is fixed between the two mounting seats (51), and the moving guide rod (53) is directly above the moving lead screw (52), a moving screw seat (521) is threadedly installed on the moving lead screw (52), a moving guide seat (531) is slidably installed on the moving guide rod (53), the rear side of the moving screw seat (521) and the moving guide seat (531) is installed with a mounting cross plate (54), two mounting plates (55) are installed on the rear side of the two mounting cross plates (54), a mounting rail (541) is fixed to the rear side of the mounting cross plate (54), and two groups of fixed sliding plates (551) are fixed on the mounting plate (55), and the fixed sliding plates (551) are slidably connected with the mounting rail (541); The polishing mechanism (6) includes an unwinding device (61) fixed above the rear side of the mounting plate (55), a winding device (64) is installed below the rear side of the mounting plate (55), a pressing device (63) and a tensioning device (65) are sequentially arranged from top to bottom between the unwinding device (61) and the winding device (64), the pressing device (63) and the tensioning device (65) are slidably connected with the mounting plate (55), a sand belt (62) is wound on the unwinding device (61), the sand belt (62) sequentially passes through the pressing device (63) and the tensioning device (65) and is wound on the winding device (64), a rotating rod (66) is slidably sleeved on the unwinding device (61) and the winding device (64), the right ends of the two rotating rods (66) are rotatably connected with the two mounting seats (51), respectively, a toothed belt wheel (67) is installed at the rightmost end of each rotating rod (66), and the two toothed belt wheels (67) are connected through a toothed belt, and a positioning groove (662) is formed in the outer surface of the right end of the lower rotating rod (66). The driving mechanism (7) comprises a transmission gear one (72) installed at the rightmost end of the moving lead screw (52), a transmission gear two (73) installed at the rightmost end of the rotating rod (66) below, a fixed shaft (75) fixed on the right side mounting seat (51), a driving wheel (74) installed on the fixed shaft (75), a driving tooth part (741) provided on the driving wheel (74) for engaging with the transmission gear one (72) and the transmission gear two (73), and a transmission belt wheel installed on the fixed shaft (75); a driving motor (71) is installed on the base (1), and the output shaft of the driving motor (71) is connected with the fixed shaft (75) through the transmission belt wheel and the belt. The included angle α between the axis of the transmission gear one (72), the axis of the transmission gear two (73) and the axis of the fixed shaft (75) is greater than ninety degrees, and the arc length of the driving tooth part (741) is one fourth of the whole driving wheel (74) circumference, that is, the included angle β between the two outermost ends of the driving tooth part (741) and the axis of the fixed shaft (75) is ninety degrees.

2. A deformation preventing rudder shaft welding device according to claim 1, characterized in that The supporting mechanism (4) comprises a support seat (41) fixed above the base (1), two groups of driving shafts (43) rotatably installed above the support seat (41) through bearing seats, and the two groups of driving shafts (43) are symmetrically arranged; three groups of adjusting sliding grooves (431) are arranged in a ring shape on the outer surface of the outer ring of the driving shaft (43), and the rightmost ends of the two groups of driving shafts (43) are connected through a driving belt wheel (44) and a belt. Two groups of adjusting rails (411) are symmetrically arranged above the support seat (41), a plurality of support assemblies (42) are linearly arranged on the adjusting rails (411), each group of the support assemblies (42) comprises two groups of support frames (421) respectively installed on the two adjusting rails (411), a support roller (422) is rotatably installed between the two groups of support frames (421), the two ends of the support roller (422) respectively penetrate through the two support frames (421) and are arranged outside the two support frames (421), a penetrating cavity is formed in the support roller (422) and penetrates through the left and right sides of the support roller (422), three adjusting sliding blocks (423) are arranged in the penetrating cavity and are uniformly distributed, the driving shaft (43) is slidably connected with the support roller (422) through the penetrating cavity, and the three adjusting sliding blocks (423) are respectively slidably arranged in the three adjusting sliding grooves (431).

3. The anti-deformation rudder shaft welding device according to claim 1, characterized in that, The unwinding part (61) has the same structure as the winding part (64), the unwinding part (61) comprises two groups of fixed shaft frames (611) symmetrically arranged on the mounting plate (55), a shaft sleeve (614) rotatably installed between the two groups of fixed shaft frames (611), one winding sleeve (612) rotatably sleeved on the outer ring of the shaft sleeve (614), one side ring (613) fixedly arranged at the two ends of the winding sleeve (612), and the side ring (613) fixedly connected with the shaft sleeve (614) through screws; a sleeve cavity is formed in the shaft sleeve (614) penetrating through the two ends of the shaft sleeve (614), and three circumferentially distributed linkage blocks (615) are arranged in the sleeve cavity. The rotating rod (66) is provided with three linkage grooves (661) on the outer surface, the rotating rod (66) is slidably connected with the shaft sleeve (614) through the sleeve cavity, and three linkage blocks (615) are respectively slidably arranged in the three linkage grooves (661).

4. A deformation preventing rudder shaft welding device according to claim 3, wherein The pressing member (63) and the tensioning member (65) are identical in structure, four circular holes are formed on the mounting plate (55) and arranged in a rectangular shape, the pressing member (63) comprises an adjusting rod (633) slidably sleeved in the upper two circular holes, the adjusting rod (633) is provided with an adjusting ring (635) on the front side of the mounting plate (55) and is screwed, the rear end of the two adjusting rods (633) is fixedly provided with a mounting shaft seat (631), the adjusting rod (633) is sleeved with an abutting spring (634), the two ends of the abutting spring (634) are respectively abutted with the mounting plate (55) and the mounting shaft seat (631), the mounting shaft seat (631) is rotatably provided with a shaft roller (632), and the sand belt (62) is in rolling contact with the outer surface of the shaft roller (632).

5. The anti-deformation rudder shaft welding device according to claim 1, characterized in that, The positioning mechanism (8) comprises a deflection rod (82), the middle of the deflection rod (82) is rotatably installed on the left side surface of the right mounting seat (51) through a shaft pin, one connecting groove (821) is formed on the front and rear ends of the deflection rod (82) respectively, a connecting pin (822) is slidably installed in the connecting groove (821), a positioning rod (83) is rotatably connected to the connecting pin (822) at the rear end, and a jacking rod (81) is rotatably connected to the connecting pin (822) at the front end. The left end of the fixing shaft (75) penetrates through the right mounting seat (51) and is located on the left side of the right mounting seat (51), the jacking wheel (84) is installed on the left end of the fixing shaft (75), the jacking wheel (84) is integrally formed with a jacking arc portion (841) on the outer circumference, and the jacking rod (81) and the jacking wheel (84) are in sliding contact with each other.

6. A deformation preventing rudder shaft welding device according to claim 5, wherein The jacking rod (81) and the positioning rod (83) are provided with lifting grooves (811) penetrating through the surfaces, one lifting sliding block (812) is slidably arranged in each of the two lifting grooves (811), the lifting sliding block (812) is fixed to the left side surface of the right mounting seat (51), a pressing spring (813) is sleeved in the lifting groove (811) of the jacking rod (81), and the two ends of the pressing spring (813) are respectively abutted with the lifting sliding block (812) and the bottom end of the lifting groove (811).

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