Anti-deformation rudder shaft welding device

Abstract

The anti-deformation rudder shaft welding device is characterized in that a moving module is fixed to the upper portion of a base, a welding robot is installed above the moving module through a moving seat in a left-right moving mode, a supporting mechanism used for containing a rudder shaft is arranged in front of the moving module, and a moving mechanism is transversely arranged on the front side of the supporting mechanism; a grinding mechanism used for cleaning the surface of the rudder shaft is installed on the moving mechanism in a left-right sliding mode, a driving mechanism is arranged at the rightmost end of the moving mechanism, a positioning mechanism used for limiting the grinding mechanism is further arranged at the right end of the moving mechanism, and the rudder shaft is located above the supporting mechanism and can be continuously turned over. According to the rudderpost polishing device, the moving mechanism and the polishing mechanism are arranged in a matched mode, so that the polishing mechanism can polish and clean the surface of the rudderpost in all directions, oxides and impurities attached to the surface of the rudderpost are removed, welding flux makes full contact with base metal in the subsequent welding process, and the welding firmness is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rudder shaft welding, in particular to a deformation-proof ship rudder shaft welding device. Background Art

[0002] A shaft rudder is a fixed shaft used to replace the rudder post, on which the rudder blades rotate. During the use of the shaft rudder, the size exceeds the tolerance range due to gradual wear, or severe thermal mechanical fatigue occurs locally, thus affecting the quality. There are many ways to repair the shaft. The most commonly used traditional method is to use electric welding. Generally, it is disassembled and placed on the frame, and the worn surface is welded manually or by a welding robot. The welding rod and the surface of the shaft rudder are melted together, and the welding rod material is filled in the surface of the shaft rudder and its cracks. After standing for a period of time to cool, it is in a solidified state. After that, the surface of the repaired position is fine-machined to make its dimensional accuracy and roughness consistent with the factory dimensions, thereby completing its repair.

[0003] During the long-term use of the rudder shaft, there may be residues and impurities on its surface, which will block the wear position of the surface, thus forming an isolation layer during welding, preventing the solder from fully contacting the parent material, resulting in loose welding, insufficient weld strength, and even pores, which will cause deformation. For this reason, we designed an anti-deformation rudder shaft welding device. Summary of the invention

[0004] The invention provides an anti-deformation ship rudder shaft welding device, which solves the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A deformation-proof ship rudder shaft welding device comprises a base, a mobile module is fixed above the base, a welding robot is installed on the mobile module for left-right movement via a mobile seat, a supporting mechanism for placing the rudder shaft is arranged in front of the mobile module, and a mobile mechanism is arranged laterally on the front side of the supporting mechanism, a grinding mechanism for cleaning the surface of the rudder shaft is installed on the mobile mechanism for left-right sliding movement, a driving mechanism is arranged at the rightmost end of the mobile mechanism, the driving mechanism is connected to the grinding mechanism and the mobile mechanism, and a positioning mechanism for limiting the grinding mechanism is also arranged at the right end of the mobile mechanism, and the positioning mechanism is connected to the driving mechanism.

[0006] Preferably, the support mechanism comprises a support seat fixed on the top of the base, two sets of drive shafts are rotatably mounted on the top of the support seat through a bearing seat, and the two sets of drive shafts are symmetrically arranged, three sets of annularly distributed adjustment grooves are opened on the outer ring surface of the drive shaft, and the rightmost ends of the two sets of drive shafts are connected by a drive pulley and a belt; The left end of one of the driving shafts is connected to an external reduction motor, which can make the two driving shafts rotate synchronously and at a low speed, and the rudder shaft above the supporting roller can rotate accordingly, so that the rudder shaft is constantly turned over and its surface can be fully cleaned. In this way, during welding, the welding robot can perform all-round welding on the outer ring surface of the rudder shaft and can weld it completely; Two groups of adjustment rails are symmetrically arranged above the support seat, and multiple groups of support assemblies are linearly arranged on the adjustment rails, each group of the support assemblies includes two groups of support frames respectively installed on the two adjustment rails, and a support roller is rotatably installed between the two groups of support frames, and the two ends of the support roller respectively penetrate the two support frames and are placed outside them, and the support roller is penetrated on the left and right to form a connecting cavity, and three evenly distributed adjustment sliders are arranged in the connecting cavity, and the drive shaft passes through the connecting cavity and is slidably connected to the support roller, and the three adjustment sliders are slidably placed in three adjustment slide grooves respectively; The support frame can move left and right along the adjustment track above the support seat, so that the position of the support assembly can be changed accordingly as needed. After the position of the support frame is fixed, it can be fixed to the support seat with bolts. This allows the support roller to be in a position where the rudder shaft does not need to be repaired. While it can support it, it will not contact with subsequent welding points to cause pressure loss.

[0007] Preferably, the moving mechanism comprises two groups of mounting seats symmetrically arranged above the base, a moving screw is rotatably installed between the two groups of mounting seats through bearings, a moving guide rod is fixed between the two mounting seats, and the moving guide rod is directly above the moving screw, a moving screw seat is threadedly installed on the moving screw, a moving guide seat is slidably installed on the moving guide rod, a mounting cross plate is installed on the rear sides of the moving screw seat and the moving guide seat, a mounting plate is installed on the rear sides of the two mounting cross plates, and the rotation of the moving screw can make the moving screw seat move left and right, thereby making the mounting plate move left and right along the moving guide rod; A mounting track is fixed to the rear side of the mounting cross plate, and two sets of fixed slides are fixed to the mounting plate. The fixed slides are slidably connected to the mounting track, and the mounting plate moves left and right on the mounting track as needed. When the position adjustment of the mounting plate is completed, the fixed slides are fixed to the mounting track by bolts, so that the position of the grinding mechanism can be adjusted so that the sanding belt on the grinding mechanism contacts the outermost end surface of the rudder shaft.

[0008] Preferably, the grinding mechanism comprises an unwinding member fixed on the upper rear side of the mounting plate, a winding member is installed on the lower rear side of the mounting plate, a pressing member and a tensioning member are sequentially arranged between the unwinding member and the winding member from top to bottom, the pressing member and the tensioning member are both connected to the mounting plate for front and rear sliding, an abrasive belt is wound around the unwinding member, and the abrasive belt passes through the pressing member and the tensioning member sequentially and is wound around the winding member; A rotating rod is slidably sleeved on the unwinding member left and right, and a rotating rod is slidably sleeved on the winding member left and right, and the two ends of the two rotating rods are rotatably connected to two mounting seats respectively, and the rightmost ends of the two rotating rods are installed with toothed belt wheels, and the two toothed belt wheels are connected by toothed belts, and a positioning groove is provided on the outer ring surface of the right end of the rotating rod below.

[0009] Preferably, the unwinding member structure is completely consistent with the winding member structure, and the unwinding member includes two groups of fixed shaft frames symmetrically arranged on the mounting plate, a shaft sleeve is rotatably installed between the two groups of fixed shaft frames, a winding sleeve is rotatably sleeved on the outer ring of the shaft sleeve, and a side ring is fixed to each of the two ends of the winding sleeve, and the side ring is fixed to the shaft sleeve by screws, and a sleeve cavity is formed by penetrating the two ends of the shaft sleeve, and three circumferentially distributed linkage blocks are arranged in the sleeve cavity; The outer ring of the winding sleeve is used to wind the abrasive belt. During use, one end of the abrasive belt is glued to the winding sleeve of the unwinding part, and then the winding sleeve is rotated to make the abrasive belt wind around the winding sleeve of the unwinding part. Then the unfixed end of the abrasive belt is passed through the surface of the pressing part and the tensioning part to make it glued to the winding sleeve of the winding part. Finally, the side ring is fixed to the shaft sleeve by screws. At this time, the installation of the abrasive belt is completed. 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 placed in the three linkage grooves respectively, the linkage blocks make the shaft sleeve and the rotating rod connected as a whole, when the rotating rod rotates, the shaft sleeve can rotate together, and the shaft sleeve can also move left and right along the rotating rod, so that the entire unwinding member and the winding member can slide left and right along the rotating rod together.

[0010] Preferably, the pressing piece has the same structure as the tensioning piece, and the mounting plate is provided with four circular holes distributed in a rectangular shape. The pressing piece includes an adjusting rod slidably sleeved in the two upper circular holes, and the adjusting rod is located at the front part of the mounting plate and is screwed with an adjusting ring, and the rear ends of the two adjusting rods are fixed with mounting shaft seats, and the adjusting rods are sleeved with abutment springs, and the two ends of the abutment springs are respectively abutted with the mounting plate and the mounting shaft seat, and a shaft roller is rotatably installed on the mounting shaft seat, and the abrasive belt is in rolling contact with the outer ring surface of the shaft roller; By loosening the screw on the adjusting ring, the adjusting ring can slide back and forth on the adjusting rod, thereby changing the length of the adjusting rod at the rear end of the mounting plate. In this way, the position of the shaft roller at the rear end of the mounting plate can be changed, and the surface of the sand belt can fit the outer surface of the rudder shaft in an arc shape.

[0011] Preferably, the driving mechanism comprises a transmission gear 1 installed at the rightmost end of the movable lead screw, a transmission gear 2 is installed at the rightmost end of the rotating rod below, a fixed shaft is fixed on the mounting seat on the right side, a driving wheel is installed on the fixed shaft, a driving tooth portion for meshing with the transmission gear 1 and the transmission gear 2 is provided on the driving wheel, a transmission pulley is also installed on the fixed shaft, a driving motor is installed on the base, and the output shaft of the driving motor is connected to the fixed shaft through a transmission pulley and a belt; The included angle α between the axis of the transmission gear 1, the axis of the transmission gear 2 and the axis of the fixed shaft is greater than 90 degrees, and the arc length of the driving tooth portion is one quarter of the circumference of the entire 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 90 degrees; When the driving wheel rotates clockwise, the driving tooth portion will mesh with the transmission gear, so that when the driving wheel rotates, it will cause the moving screw to rotate through the driving tooth portion, and the rotation of the moving screw will cause the moving screw seat to move rightward, and the moving screw seat moving rightward will drive the mounting plate to move rightward along the moving guide rod. At this time, the unwinding part, the winding part, the pressing part and the tensioning part installed on the mounting plate will all move linearly to the right together, and the sanding belt installed between the unwinding part, the winding part, the pressing part and the tensioning part will also move with it, so that the entire sanding belt can grind a part of the outer surface of the rudder shaft.

[0012] Preferably, the positioning mechanism comprises a deflection rod, the middle part of the deflection rod is rotatably mounted on the left surface of the right mounting seat through an axle pin, a connecting groove is respectively provided at the front and rear ends of the deflection rod, a connecting pin is slidably mounted in the connecting groove, a positioning rod is rotatably connected to the connecting pin at the rear end, and a lifting rod is rotatably connected to the connecting pin at the front end; The left end of the fixed shaft passes through the right mounting seat and is located on the left side thereof, and a lifting wheel is installed on the left end of the fixed shaft, a lifting arc portion is integrally formed on the outer ring of the lifting wheel, and the lifting rod is in sliding contact with the outer surface of the lifting wheel.

[0013] Preferably, the lifting rod and the positioning rod are both designed to have lifting grooves formed through them, and a lifting slider is slidably arranged in each of the two lifting grooves, and the lifting slider is fixed to the left surface of the right mounting seat, and a lower compression spring is sleeved in the lifting groove of the lifting rod, and the two ends of the lower compression spring are respectively in contact with the lifting slider inside and the bottom end of the lifting groove; When the driving tooth portion is disengaged from the second transmission gear, the lower end of the lifting rod contacts the lifting arc portion, and the bottom end of the positioning rod is inserted into the positioning groove of the lower rotating rod; When the driving tooth portion is close to the transmission gear 2, the positioning rod disengages from the positioning groove, and when the driving tooth portion is meshed with the transmission gear 2, the positioning rod just disengages from the positioning groove, releasing the limit on the rotating rod, so that it can rotate with the driving tooth portion.

[0014] Beneficial effects of the present invention: 1. By setting a support mechanism in front of the welding robot, the rudder shaft is above the support mechanism, and the rudder shaft can be turned over continuously, and the moving mechanism and the grinding mechanism are arranged. The grinding mechanism can move linearly under the action of the moving mechanism, so that the grinding mechanism can perform all-round grinding and cleaning on the surface of the rudder shaft, so that the oxides and impurities attached to the surface are removed, and in the subsequent welding process, the solder is fully in contact with the base material, the welding firmness is improved, and the weld strength is greater; 2. The grinding mechanism is provided with a winding piece and an unwinding piece for unwinding and winding the sanding belt, which are connected to the driving mechanism through a rotating rod, and the driving mechanism is intermittently connected to the moving mechanism and the rotating rod, so that the sanding belt can be replaced with a new part for grinding after grinding a part of the rudder shaft, avoiding incomplete contact caused by wear and improving the effect of grinding; 3. By arranging a positioning mechanism on the driving mechanism, the positioning mechanism positions the sanding belt when it does not need to be replaced, thereby avoiding the contact between the sanding belt and the rudder shaft causing its rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a front cross-sectional view of an anti-deformation ship rudder shaft welding device proposed by the present invention; Figure 2 for Figure 1 The left and right isometric drawings; Figure 3 for Figure 2 The fore-aft isometric view without the rudder axis; Figure 4 for Figure 3 A partial enlarged schematic diagram of the middle support mechanism; Figure 5 for Figure 2 A partial enlarged schematic diagram of the moving mechanism and the grinding mechanism; Figure 6 for Figure 5 The front and rear isometric drawings of the Figure 7 for Figure 6 Schematic diagram of the structure of the tensioning part, the pressing part, the winding part and the unwinding part; Figure 8 for Figure 7 The front and rear isometric drawings of the Fig. 9 for Figure 2 The enlarged schematic diagram at A in the middle; Fig.10 for Figure 1 The enlarged schematic diagram of point B in the middle; Fig.11It is a schematic diagram of the right side structure of the driving mechanism and the positioning mechanism; Fig.12 It is a schematic diagram of the left side structure of the driving mechanism and the positioning mechanism.

[0016] Numbers in the figure: 1, base; 2, mobile module; 3, welding robot; 31, mobile seat; 4, support mechanism; 41, support seat; 411, adjustment track; 42, support assembly; 421, support frame; 422, support roller; 423, adjustment slider; 43, drive shaft; 431, adjustment slide; 44, drive pulley; 5, mobile mechanism; 51, mounting seat; 52, mobile lead screw; 521, mobile screw seat; 53, mobile guide rod; 531, mobile guide seat; 54, installation cross plate; 541, installation track; 55, installation plate; 551, fixed slide plate; 6, grinding mechanism; 61, unwinding member; 611, fixed shaft frame; 612, winding sleeve; 613, side ring; 614, 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 1; 73, transmission gear 2; 74, driving wheel; 741, driving gear; 75, fixed shaft; 8, positioning mechanism; 81, lifting rod; 811, lifting groove; 812, lifting slider; 813, lower pressure spring; 82, deflection rod; 821, connecting groove; 822, connecting pin; 83, positioning rod; 84, lifting wheel; 841, lifting arc. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Reference Figure 1-Figure 12 A deformation-proof ship rudder shaft welding device comprises a base 1, a mobile module 2 is fixed above the base 1, a welding robot 3 is movably installed on the mobile module 2 through a mobile seat 31, a supporting mechanism 4 for placing the rudder shaft is arranged in front of the mobile module 2, and a mobile mechanism 5 is laterally arranged on the front side of the supporting mechanism 4, a grinding mechanism 6 for cleaning the surface of the rudder shaft is slidably installed on the mobile mechanism 5, a driving mechanism 7 is arranged at the rightmost end of the mobile mechanism 5, the driving mechanism 7 is connected with the grinding mechanism 6 and the mobile mechanism 5, and a positioning mechanism 8 for limiting the grinding mechanism 6 is also arranged at the right end of the mobile mechanism 5, and the positioning mechanism 8 is connected with the driving mechanism 7.

[0019] The support mechanism 4 includes a support seat 41 fixed on the top of the base 1, and two sets of drive shafts 43 are rotatably installed on the top of the support seat 41 through a bearing seat, and the two sets of drive shafts 43 are symmetrically arranged, and the rightmost ends of the two sets of drive shafts 43 are connected by a drive pulley 44 and a belt, and the outer surface of the drive shaft 43 is provided with three sets of annularly distributed adjustment grooves 431; The left end of one of the driving shafts 43 is connected to an external reduction motor, which can make the two driving shafts 43 rotate synchronously and at a low speed, and the rudder shaft above the supporting roller 422 can rotate accordingly, so that the rudder shaft is constantly turned over, and its surface can be fully cleaned. In this way, during welding, the welding robot 3 can also perform all-round welding on the outer ring surface of the rudder shaft, and can weld it completely; Two groups of adjustment rails 411 are symmetrically arranged above the support seat 41, and multiple groups of support components 42 are linearly arranged on the adjustment rails 411. Each group of support components 42 includes two groups of support frames 421 respectively installed on the two adjustment 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 the two support frames 421 and are placed outside them. The support roller 422 penetrates the left and right sides to form a connection cavity. Three evenly distributed adjustment sliders 423 are arranged in the connection cavity. The drive shaft 43 passes through the connection cavity and is slidably connected to the support roller 422, and the three adjustment sliders 423 are slidably placed in three adjustment slots 431 respectively. A horizontal plate is fixed between the two support frames 421, and threaded holes are opened on the horizontal plate. The support frame 421 can move left and right above the support seat 41 along the adjustment track 411, so that the position of the support assembly 42 can be changed accordingly according to needs. After the position of the support frame 421 is fixed, bolts are screwed into the threaded holes of the horizontal plate so that the bolts are tightly pressed against the upper surface of the support seat 41, and the support assembly 42 can be fixed. In this way, the support roller 422 can be placed in a position where the rudder shaft does not need to be repaired. It can support it while not causing pressure loss due to contact with subsequent welding points.

[0020] The moving mechanism 5 includes two sets of mounting seats 51 symmetrically arranged above the base 1, a moving lead screw 52 is rotatably mounted between the two sets of mounting seats 51 through a bearing, 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 mounted on the moving lead screw 52, ​​a moving guide seat 531 is slidably mounted on the moving guide rod 53, and a mounting cross plate 54 is mounted on the rear side of the moving screw seat 521 and the moving guide seat 531, and the rear side of the two mounting cross plates 54 is mounted There is a mounting plate 55, and the movable screw seat 521 can be moved left and right by the forward or reverse rotation of the movable lead screw 52. During the movement of the movable screw seat 521 left and right, the mounting plate 55 can be moved together through the mounting cross plate 54 below. The mounting plate 55 can make the mounting cross plate 54 above slide left and right along the movable guide rod 53 under the action of the movable guide seat 531, so that the mounting plate 55 can be stably moved left and right under the action of the mounting cross plate 54, the movable guide seat 531 and the movable screw seat 521; A mounting track 541 is fixed to the rear side of the mounting cross plate 54, and two groups of fixed slide plates 551 are fixed on the mounting plate 55. The fixed slide plates 551 are slidably connected to the mounting track 541, and screw holes are opened on the fixed slide plates. Bolts are threadedly connected to the inner threads of the screw holes. The mounting plate 55 can move left and right along the mounting track 541 as needed. When the position of the mounting plate 55 is adjusted, the bolts are tightened and pressed tightly against the surface of the mounting track 541 to complete the fixation of the fixed slide plate 551 and the mounting track 541, so that the position of the grinding mechanism 6 can be adjusted so that the sanding belt 62 on the grinding mechanism 6 contacts the outermost surface of the rudder shaft.

[0021] The grinding mechanism 6 includes an unwinding member 61 fixed on the upper rear side of the mounting plate 55, a winding member 64 is installed on the lower rear side of the mounting plate 55, a pressing member 63 and a tensioning member 65 are sequentially arranged between the unwinding member 61 and the winding member 64 from top to bottom, the pressing member 63 and the tensioning member 65 are both connected to the mounting plate 55 for front and rear sliding, an abrasive belt 62 is wound around the unwinding member 61, the abrasive belt 62 passes through the pressing member 63 and the tensioning member 65 in sequence and is wound around the winding member 64, a short and fine metal brush is implanted on the surface of the abrasive belt 62, and the metal brush can be extended into a narrow space as much as possible, so that it can be ground; A rotating rod 66 is slidably sleeved on the unwinding member 61, and a rotating rod 66 is slidably sleeved on the winding member 64. The two ends of the two rotating rods 66 are respectively rotatably connected to the two mounting seats 51. The rightmost ends of the two rotating rods 66 are both installed with toothed pulleys 67, and the two toothed pulleys 67 are connected by a toothed belt. A positioning groove 662 is provided on the outer ring surface of the right end of the lower rotating rod 66.

[0022] The structure of the unwinding member 61 is completely consistent with that of the winding member 64. The unwinding member 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. A side ring 613 is fixed to each end of the winding sleeve 612. The side ring 613 is fixed to the shaft sleeve 614 by screws. A sleeve cavity is formed at both ends of the shaft sleeve 614. Three circumferentially distributed linkage blocks 615 are arranged in the sleeve cavity. 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 glued to the winding sleeve 612 of the unwinding member 61, and then the winding sleeve 612 is rotated to make the abrasive belt 62 wind around the winding sleeve 612 of the unwinding member 61. Then, the unfixed end of the abrasive belt 62 passes through the surfaces of the pressing member 63 and the tensioning member 65, and is glued to the winding sleeve 612 of the winding member 64. Finally, the side ring 613 is fixed to the shaft sleeve 614 by screws. At this time, the installation of the abrasive belt 62 is completed. Three evenly distributed linkage grooves 661 are provided on the outer ring surface of the rotating rod 66. The rotating rod 66 is slidably connected to the sleeve 614 through the sleeve cavity, and the three linkage blocks 615 are slidably placed in the three linkage grooves 661 respectively. The linkage blocks 615 make the sleeve 614 and the rotating rod 66 connected as a whole. When the rotating rod 66 rotates, the sleeve 614 can rotate together, and the sleeve 614 can also move left and right along the rotating rod 66, so that the entire unwinding member 61 and the winding member 64 can slide left and right along the rotating rod 66.

[0023] The pressing piece 63 has the same structure as the tensioning piece 65. The mounting plate 55 is provided with four circular holes in a rectangular shape. The pressing piece 63 includes an adjusting rod 633 which is slidably sleeved in the two upper circular holes. The adjusting rod 633 is located at the front part of the mounting plate 55 and is screwed with an adjusting ring 635. The rear ends of the two adjusting rods 633 are fixed 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. A shaft roller 632 is rotatably installed on the mounting shaft seat 631. The sanding belt 62 is in rolling contact with the outer ring surface of the shaft roller 632. The adjusting ring is provided with a screw hole, which extends inwardly to the adjusting rod 633. The screw hole is threadedly connected with a screw. The screw on the adjusting ring 635 is loosened to make the screw disengage from the screw hole of the adjusting rod 633, so that the adjusting ring 635 can slide back and forth on the adjusting rod 633, thereby changing the length of the adjusting rod 633 at the rear end of the mounting plate 55. Then, the screw can be tightened again. In this way, the position of the shaft roller 632 at the rear end of the mounting plate 55 can be changed. The roller shaft 632 in the pressing member 63 and the tensioning member 64 makes the sand belt 62 close to the rudder shaft on the supporting roller 422. The surface of the sand belt 62 can be arc-shaped and fit the outer surface of the rudder shaft. When the rudder shaft rotates under the action of the supporting roller 422, the sand belt can grind the surface of the rudder shaft, and the metal brush on the sand belt can extend into the narrow space as much as possible to grind it, so that the oxides and impurities attached to the surface of the rudder shaft are polished and removed to make its surface smooth.

[0024] The driving mechanism 7 includes a transmission gear 1 72 installed at the rightmost end of the moving lead screw 52, ​​a transmission gear 2 73 installed at the rightmost end of the lower rotating rod 66, a fixed shaft 75 fixed on the right mounting seat 51, a driving wheel 74 installed on the fixed shaft 75, a driving tooth portion 741 for meshing with the transmission gear 1 72 and the transmission gear 2 73 is provided on the driving wheel 74, a transmission pulley is also 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 to the fixed shaft 75 through a transmission pulley and a belt; The included angle α between the axis of the transmission gear 1 72, the axis of the transmission gear 2 73 and the axis of the fixed shaft 75 is greater than ninety degrees, and the arc length of the driving tooth portion 741 is one quarter of the circumference of the entire driving wheel 74, that is, the included angle β between the two outermost ends of the driving tooth portion 741 and the axis of the fixed shaft 75 is ninety degrees; When the driving wheel 74 rotates clockwise, the driving tooth portion 741 will mesh with the transmission gear 1 72 ( Fig.11 In the example of first meshing with the transmission gear 1 72), when the driving wheel 74 rotates, the driving tooth portion 741 will cause the movable lead screw 52 to rotate, and the rotation of the movable lead screw 52 will cause the movable screw seat 521 to move rightward, and the movable screw seat 521 moving rightward will drive the mounting plate 55 to move rightward along the movable guide rod 53. At this time, the unwinding member 61, the winding member 64, the pressing member 63 and the tensioning member 65 installed on the mounting plate 55 will all move linearly to the right together, and the sanding belt 62 installed between the unwinding member 61, the winding member 64, the pressing member 63 and the tensioning member 65 will also move linearly, so that the entire sanding belt 62 grinds a part of the outer surface of the rudder shaft; Then the driving tooth portion 741 will mesh with the second transmission gear 73, and the lower rotating rod 66 will rotate one or more circles (the number of circles of the rotating rod 66 is related to the transmission ratio of the second transmission gear 73 and the driving tooth portion 741, and the transmission ratio is an integer multiple). Since the upper and lower rotating rods 66 are connected by the toothed belt and the toothed belt wheel 67, the two rotating rods 66 will rotate clockwise, so that the unwinding member 61 installed on the rotating rod 66 and the winding sleeve 612 on the winding member 64 will rotate clockwise, and the part of the sanding belt 62 that contacts the surface of the rudder shaft will be wound onto the winding sleeve 612 of the winding member 64, and the new part of the sanding belt 62 will contact the surface of the rudder shaft and grind it. When the sanding belt 62 is grinding its surface, the rudder shaft continues to rotate under the action of the supporting roller 422, so as to fully grind the surface of this part. After the rudder shaft rotates several times, the driving tooth portion 741 will mesh with the driving gear 72 again, and the driving gear 72 makes the movable screw 52 rotate one or more circles. At this time, the sanding belt 62 advances a unit distance (that is, the sanding belt 62 advances a distance of the width of the sanding belt 62, and the number of rotations of the movable screw 52 is related to the transmission ratio of the transmission gear 72 and the driving tooth portion 741, and the transmission ratio is an integer multiple), and the sanding belt 62 will contact and grind with other parts of the rudder shaft. This cycle is repeated to grind and clean the entire surface of the rudder shaft.

[0025] The positioning mechanism 8 includes a deflection rod 82, the middle of which is rotatably mounted on the left surface of the right mounting seat 51 through an axle pin, and a connecting groove 821 is respectively provided at the front and rear ends of the deflection rod 82, and a connecting pin 822 is slidably mounted in the connecting groove 821, a positioning rod 83 is rotatably connected to the rear end connecting pin 822, and a lifting rod 81 is rotatably connected to the front end connecting pin 822; The left end of the fixed shaft 75 passes through the right mounting seat 51 and is located on its left side, and a lifting wheel 84 is installed on the left end of the fixed shaft 75. The outer ring of the lifting wheel 84 is integrally formed with a lifting arc portion 841, and the lifting rod 81 is in sliding contact with the outer surface of the lifting wheel 84.

[0026] The lifting rod 81 and the positioning rod 83 are both designed to have lifting grooves 811 formed therethrough, and a lifting slider 812 is slidably disposed in each of the two lifting grooves 811. The lifting slider 812 is fixed to the left surface of the right mounting seat 51. A compression spring 813 is sleeved in the lifting groove 811 of the lifting rod 81, and the two ends of the compression spring 813 are respectively in contact with the lifting slider 812 inside and the bottom end of the lifting groove 811; When the driving tooth portion 741 is out of mesh with the transmission gear 2 73, the lower end of the lifting rod 81 contacts the lifting arc portion 841. At this time, the lifting rod 81 will move upward along the lifting slider 812 in its lifting groove 811. When the lifting rod 81 moves upward, the top end of the lifting rod 81 will make the front end of the deflection rod 82 deflect upward with the shaft pin in the middle as the axis, and the rear end of the deflection rod 82 will deflect downward, and the connecting pin 822 at the rear end of the deflection rod 82 will press the positioning rod 83 downward, so that the positioning rod 83 slides downward along the lifting slider 812 in its 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, the two rotating rods 66 can be positioned together and cannot rotate, so that the unwinding member 61 and the winding member 64 installed on the rotating rod 66 cannot rotate, thereby avoiding the possibility of the sanding belt 62 rotating. Since a downward compression spring 813 is also provided in the lifting rod 81, the downward compression spring 813 causes the lifting rod 81 to be subjected to a downward force. When the driving tooth portion 741 approaches the transmission gear 2 72, the lifting rod 81 at this time gradually moves downward along the lifting arc portion 841. At this time, the front end of the deflection rod 82 deflects downward with the shaft pin in the middle as the axis, and the rear end of the deflection rod 82 will deflect upward. The connecting pin 822 at the rear end of the deflection rod 82 will pull the positioning rod 83 upward, thereby causing the positioning rod 83 to disengage from the positioning groove 662, and when the driving tooth portion 741 is engaged with the transmission gear 2 73, the positioning rod 83 at this time just disengages from the positioning groove 662, releasing the limit on the rotating rod 66, so that it can rotate with the driving tooth portion 741.

[0027] Working principle: When welding and repairing the surface of the rudder shaft, first, the grinding mechanism 6 is located at the left end of the base 1, and the grinding mechanism 6 moves from left to right at this time, and a brand new sanding belt 62 is installed on the unwinding member 61, and the unfixed end of the sanding belt 62 passes through the pressing member 63 and the tensioning member 65 in turn and is fixed to the winding member 64. When the grinding mechanism 6 is at the right end of the base 1 and moves to the left, the sanding belt 62 is wound around the winding member 64, and is passed through the tensioning member 65 and the pressing member 63 in turn and is fixed to the unwinding member 61; Then, the rudder shaft is placed above the support roller 422 of the support mechanism 4 using a lifting device, and during the placement, it is necessary to ensure that the position of the rudder shaft to be repaired is not above the support roller 422, and the left end of the rudder shaft is as close as possible to the sanding belt 62 in the grinding mechanism 6, so as to ensure that in the subsequent welding process, the support roller 422 will not contact the welding point to cause extrusion deformation; After the rudder shaft is placed, the sanding belt 62 in the grinding mechanism 6 is made to fit the surface of the rudder shaft. Specifically, first, the screws between the fixing slide plate 551 and the mounting track 541 are loosened, and the mounting plate 55 can be moved along the mounting track 541 at this time, so that the unwinding member 61, the winding member 64, the pressing member 63, and the tensioning member 65 on the mounting plate 55 can move accordingly, so that the left end of the sanding belt 62 can be aligned with the left end of the rudder shaft (the journals at the left and right ends of the rudder shaft are manually polished due to their small size), and then the adjusting rings 635 on the adjusting rods 633 of the pressing member 63 and the tensioning member 65 are loosened respectively, and the pressing member 63 and the tensioning member 65 can move backward as a whole, so that the surface of the sanding belt 62 fits the surface of the rudder shaft, and then the adjusting ring 635 is fixed by screws so that the pressing member 63 and the tensioning member 65 cannot slide backward; At this time, the power supply of the external reduction motor connected to the left end of the driving shaft 43 can be turned on, and the reduction motor can make the two driving shafts 43 rotate synchronously and at a low speed, and the rudder shaft above the supporting roller 422 can rotate accordingly, so that the rudder shaft is constantly turned over, and the sanding belt 62 will grind the part in contact with the rudder shaft; Then, the power of the driving motor 71 is turned on, and the driving motor 71 will make the driving wheel 74 rotate clockwise through the fixed shaft 75. When the driving tooth portion 741 is about to mesh with the transmission gear 2 73, the lifting rod 81 gradually moves downward along the lifting arc portion 841. At this time, the front end of the deflection rod 82 deflects downward with the shaft pin in the middle as the axis, and 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 disengaged from the positioning groove 662, and the limit of the rotating rod 66 is released. At this time, the rotating rod 66 can rotate together with the driving wheel 74; At this time, the lower rotating rod 66 will rotate one or more circles accordingly. Since the upper and lower rotating rods 66 are connected by a toothed belt and a toothed belt wheel 67, the two rotating rods 66 will rotate clockwise accordingly. In this way, the unwinding member 61 installed on the rotating rod 66 and the winding sleeve 612 on the winding member 64 will rotate clockwise accordingly. The part of the sanding belt 62 that contacts the surface of the rudder shaft will be wound onto the winding sleeve 612 of the winding member 64, and the new part of the sanding belt 62 will contact the surface of the rudder shaft and grind it. When the sanding belt 62 is grinding the surface, the rudder shaft continues to rotate under the action of the supporting roller 422, so as to fully grind the surface. After the rudder shaft rotates several times, the driving tooth portion 741 is disengaged from the meshing with the transmission gear 2 73, and will be meshed with the transmission gear 1 72. When the driving tooth portion 741 is disengaged from the meshing with the transmission gear 2 73, the positioning rod 83 slides downward along the lifting slider 812 in its 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, thereby limiting the rotation of the rotating rod 66. When the driving tooth portion 741 is out of mesh with the transmission gear 1 72, the transmission gear 1 72 causes the movable screw 52 to rotate one circle, and the sanding belt 62 then moves forward one unit distance, and the sanding belt 62 will contact and grind other parts of the rudder shaft, and the entire surface of the rudder shaft can be polished and cleaned by repeating this cycle; After the surface of the rudder shaft is cleaned, the oxides and impurities attached to the surface of the rudder shaft are removed, and its surface is smoothly exposed to the outside world. Then the moving module 2 allows the welding robot 3 to move left and right. The welding robot 3 is in the required welding position and performs welding repairs on the surface of the rudder shaft. After the welding is completed and a period of time has passed, it is lifted again by the lifting equipment and moved to the processing machine tool, and its surface is fine-machined to make its surface accuracy consistent with that when it leaves the factory.

[0028] By arranging a support mechanism 4 in front of the welding robot 3, the rudder shaft is located above the support mechanism 4, and the rudder shaft can be turned over continuously, and the moving mechanism 5 and the grinding mechanism 6 are arranged, and the grinding mechanism 6 can move linearly under the action of the moving mechanism 5, so that the grinding mechanism 6 can perform all-round grinding and cleaning on the surface of the rudder shaft, so that the oxides and impurities attached to the surface are removed, and in the subsequent welding process, the solder is fully in contact with the base material, so as to improve the welding firmness, make the weld stronger, and make it less likely to deform; The grinding mechanism 6 is provided with a reel 64 and an unreel 61 for unwinding and rewinding the sanding belt 62, which are connected to the driving mechanism 7 via a rotating rod 66, and the driving mechanism 7 is intermittently connected to the moving mechanism 5 and the rotating rod 66, so that the sanding belt 62 can be replaced with a new part for grinding after grinding a part of the rudder shaft, thereby improving the effect of grinding; By arranging the positioning mechanism 8 on the driving mechanism 7, the positioning mechanism 8 positions the sanding belt 62 when it does not need to be replaced, thereby avoiding the sanding belt 62 from rotating due to contact with the rudder shaft.

[0029] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A deformation-proof rudder shaft welding device, characterized in that: The invention comprises a base (1), a mobile module (2) is fixed on the top of the base (1), a welding robot (3) is movably mounted on the top of the mobile module (2) via a mobile seat (31), a support mechanism (4) for placing a rudder shaft is arranged in front of the mobile module (2), and a mobile mechanism (5) is arranged laterally on the front side of the support mechanism (4), a grinding mechanism (6) for cleaning the surface of the rudder shaft is slidably mounted on the mobile mechanism (5), a driving mechanism (7) is arranged at the rightmost end of the mobile mechanism (5), the driving mechanism (7) is connected to the grinding mechanism (6) and the mobile mechanism (5), and a positioning mechanism (8) for limiting the position of the grinding mechanism (6) is also arranged at the right end of the mobile mechanism (5), and the positioning mechanism (8) is connected to the driving mechanism (7).

2. The anti-deformation rudder shaft welding device according to claim 1, characterized in that: The support mechanism (4) comprises a support seat (41) fixed above the base (1); two sets of drive shafts (43) are rotatably mounted above the support seat (41) via a bearing seat, and the two sets of drive shafts (43) are symmetrically arranged; three sets of annularly distributed adjustment grooves (431) are provided on the outer ring surface of the drive shaft (43); the rightmost ends of the two sets of drive shafts (43) are connected via a drive pulley (44) and a belt; Two groups of adjustment rails (411) are symmetrically arranged above the support seat (41), and a plurality of groups of support assemblies (42) are linearly arranged on the adjustment rails (411), each group of the support assemblies (42) comprises two groups of support frames (421) respectively mounted on the two adjustment rails (411), a support roller (422) is rotatably mounted between the two groups of support frames (421), two ends of the support roller (422) respectively penetrate the two support frames (421) and are placed outside them, a through-connection cavity is formed by passing through the support roller (422) on the left and right, and three evenly distributed adjustment sliders (423) are arranged in the through-connection cavity, the drive shaft (43) passes through the through-connection cavity and is slidably connected to the support roller (422), and the three adjustment sliders (423) are slidably placed in three adjustment slots (431) respectively.

3. The anti-deformation rudder shaft welding device according to claim 1, characterized in that: The moving mechanism (5) comprises two groups of mounting seats (51) symmetrically arranged above the base (1); a moving lead screw (52) is rotatably mounted between the two groups of mounting seats (51) via a bearing; a moving guide rod (53) is fixed between the two mounting seats (51), and the moving guide rod (53) is located directly above the moving lead screw (52); a moving screw seat (521) is threadedly mounted on the moving lead screw (52); a moving guide seat (531) is slidably mounted on the moving guide rod (53); a mounting cross plate (54) is mounted on the rear sides of the moving screw seat (521) and the moving guide seat (531); and a mounting plate (55) is mounted on the rear sides of the two mounting cross plates (54); A mounting rail (541) is fixed to the rear side of the mounting transverse plate (54), and two groups of fixed slide plates (551) are fixed to the mounting plate (55), wherein the fixed slide plates (551) are slidably connected to the mounting rail (541).

4. The anti-deformation rudder shaft welding device according to claim 3, characterized in that: The grinding mechanism (6) comprises an unwinding member (61) fixed on the upper rear side of the mounting plate (55); a winding member (64) is installed on the lower rear side of the mounting plate (55); a pressing member (63) and a tensioning member (65) are arranged in sequence from top to bottom between the unwinding member (61) and the winding member (64); the pressing member (63) and the tensioning member (65) are both connected to the mounting plate (55) in a front-rear sliding manner; an abrasive belt (62) is wound around the unwinding member (61); the abrasive belt (62) passes through the pressing member (63) and the tensioning member (65) in sequence and is wound around the winding member (64); A rotating rod (66) is slidably sleeved on the unwinding member (61) and a rotating rod (66) is slidably sleeved on the winding member (64). Two ends of the two rotating rods (66) are rotatably connected to two mounting seats (51) respectively. A toothed belt wheel (67) is installed at the rightmost ends of the two rotating rods (66). The two toothed belt wheels (67) are connected by a toothed belt. A positioning groove (662) is provided on the outer ring surface of the right end of the lower rotating rod (66).

5. The anti-deformation rudder shaft welding device according to claim 4, characterized in that: The structure of the unwinding member (61) is completely consistent with that of the winding member (64). The unwinding member (61) comprises two groups of fixed shaft frames (611) symmetrically arranged on the mounting plate (55). A shaft sleeve (614) is rotatably mounted 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). A side ring (613) is fixed to each of the two ends of the winding sleeve (612). The side ring (613) is fixed to the shaft sleeve (614) by screws. A sleeve cavity is formed through the two ends of the shaft sleeve (614). Three circumferentially distributed linkage blocks (615) are arranged in the sleeve cavity. The outer ring surface of the rotating rod (66) is provided with three evenly distributed linkage grooves (661); the rotating rod (66) is slidably connected to the shaft sleeve (614) via the sleeve cavity, and the three linkage blocks (615) are slidably disposed in the three linkage grooves (661) respectively.

6. The anti-deformation rudder shaft welding device according to claim 5, characterized in that: The pressing piece (63) has the same structure as the tensioning piece (65). The mounting plate (55) is provided with four circular holes distributed in a rectangular shape. The pressing piece (63) comprises an adjusting rod (633) slidably sleeved in the two upper circular holes. The adjusting rod (633) is located at the front part of the mounting plate (55) and is screwed with an adjusting ring (635). The rear ends of the two adjusting rods (633) are fixed 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 against the mounting plate (55) and the mounting shaft seat (631). A shaft roller (632) is rotatably mounted on the mounting shaft seat (631). The sanding belt (62) is in rolling contact with the outer ring surface of the shaft roller (632).

7. The anti-deformation rudder shaft welding device according to claim 4, characterized in that: The driving mechanism (7) comprises a transmission gear 1 (72) mounted on the rightmost end of the movable lead screw (52), a transmission gear 2 (73) mounted on 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) mounted on the fixed shaft (75), a driving tooth portion (741) for meshing with the transmission gear 1 (72) and the transmission gear 2 (73) being provided on the driving wheel (74), a driving pulley being further mounted on the fixed shaft (75), a driving motor (71) being mounted on the base (1), and an output shaft of the driving motor (71) being connected to the fixed shaft (75) via a driving pulley and a belt; The included angle α between the axis of the transmission gear 1 (72), the axis of the transmission gear 2 (73) and the axis of the fixed shaft (75) is greater than ninety degrees, and the arc length of the driving tooth portion (741) is one quarter of the circumference of the entire driving wheel (74), that is, the included angle β between the two outermost ends of the driving tooth portion (741) and the axis of the fixed shaft (75) is ninety degrees.

8. The anti-deformation rudder shaft welding device according to claim 7, characterized in that: The positioning mechanism (8) comprises a deflection rod (82), the middle portion of the deflection rod (82) being rotatably mounted on the left surface of the right mounting seat (51) via an axle pin, a connecting groove (821) being respectively formed at the front and rear ends of the deflection rod (82), a connecting pin (822) being slidably mounted in the connecting groove (821), a positioning rod (83) being rotatably connected to the connecting pin (822) at the rear end, and a lifting rod (81) being rotatably connected to the connecting pin (822) at the front end; The left end of the fixed shaft (75) passes through the right mounting seat (51) and is located on the left side thereof, and a lifting wheel (84) is mounted on the left end of the fixed shaft (75), the outer ring of the lifting wheel (84) is integrally formed with a lifting arc portion (841), and the lifting rod (81) is in sliding contact with the outer surface of the lifting wheel (84).

9. The anti-deformation rudder shaft welding device according to claim 8, characterized in that: The surfaces of the lifting rod (81) and the positioning rod (83) are both designed to be penetrated by a lifting groove (811), and a lifting slider (812) is slidably arranged in each of the two lifting grooves (811), and the lifting slider (812) is fixed to the left surface of the right mounting seat (51), and a downward compression spring (813) is sleeved in the lifting groove (811) of the lifting rod (81), and the two ends of the downward compression spring (813) are respectively in contact with the lifting slider (812) inside and the bottom end of the lifting groove (811).

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