Ship stern post welding device

Abstract

The invention relates to the technical field of ship manufacturing, in particular to a ship stern post welding device which comprises a main plate body, a moving mechanism is arranged at the top end of the main plate body, the moving mechanism comprises two first lifting plates, the two first lifting plates are provided with through grooves, and the two first lifting plates are arranged on the left side and the right side of the top end of the main plate body correspondingly; according to the ship sternpost welding device, a fifth motor is started to enable a second fixing rod to rotate, arc-shaped grinding is conducted on the non-welded positions of the sternposts through grinding pieces, the welding efficiency is improved, the welding quality is improved, and the welding quality of the sternposts is improved. And the outer side walls of the clamping blocks make contact with the slotting positions of the outer side walls of the stern columns, so that the outer side walls of the stern columns are clamped and fixed through the clamping blocks in the grinding process, the welding quality is improved, it is guaranteed that the welding positions of the two sets of stern columns are completely attached, and the connecting strength of the two sets of stern columns after welding is improved.

Description

Technical Field

[0001] The invention relates to the technical field of shipbuilding, and in particular to a ship stern welding device. Background Art

[0002] In the ship manufacturing process, the stern post is a key structural component of the ship's stern, and its welding quality directly affects the ship's navigation safety and service life. The stern post plays an important supporting and protective role for the propeller and rudder. It has to bear the weight of the propeller and the vibration generated when the propeller is working, and provide a stable support environment for the normal operation of the propeller. At the same time, when the ship turns, the stern post must also bear the torque generated when turning the rudder to ensure that the rudder can work flexibly and stably. Due to the complex structure and large size of the ship's stern post, it is usually cast in several sections and then connected into a whole by welding due to the limitations of casting equipment and transportation conditions. The joints between these sections require high-precision welding to ensure the strength and shape accuracy of the entire stern post.

[0003] The existing ship stern column welding device has some disadvantages. First, when welding the stern column in the prior art, it is generally positioned manually, and it is difficult to ensure the accuracy of each positioning, and deviations are prone to occur, resulting in inaccurate grinding positions, resulting in increased porosity, slag inclusions and other welding defects. At the same time, it is not convenient to clamp the stern column during the grinding process, and this method cannot ensure that the two sets of stern column welding points are completely fitted after grinding, which reduces the connection strength of the stern column after welding and makes the ship stern column prone to position displacement. Secondly, traditional welding devices have a low degree of automation and mostly rely on manual loading, positioning and welding operations. Manual loading is not only inefficient, but also difficult to ensure the accuracy of each loading position, thereby affecting the consistency of welding quality. In order to solve the above problems, we propose a ship stern column welding device. Summary of the invention

[0004] The main purpose of the present invention is to provide a ship stern welding device, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A ship stern column welding device comprises a main board body, a moving mechanism is arranged at the top of the main board body, the moving mechanism comprises two groups of first lifting plates, both of the two groups of the first lifting plates are provided with through slots, the two groups of the first lifting plates are respectively arranged at the left and right sides of the top of the main board body, the left and right ends of the two groups of the first lifting plates are provided with a rotating fixing mechanism for limiting and clamping a group of stern columns, the left group of the rotating fixing mechanism comprises a fixing frame, the right end of the fixing frame is fixedly connected to the left end of the first lifting plate, a fifth motor is arranged at one side of the fixing frame, a third electric telescopic rod is arranged at the output end of the fifth motor, the extended end of the third electric telescopic rod is penetrated through the through slot and provided with a first gear, the first gear is matched with the through slot, the corresponding ends of the two groups of the first lifting plates are rotatably connected with sleeves, the outer side walls of the two groups of the sleeves are provided with three groups of placement slots distributed in equal angle arrays, a plurality of groups of the placement slots are fixedly connected with fourth electric telescopic rods, and the telescopic ends of the plurality of groups of the fourth electric telescopic rods are fixedly connected with anti-slip sheets.

[0006] Preferably, both left and right ends of the first lifting plate are provided with a clamping and grinding mechanism for clamping and grinding a group of unwelded parts of the stern column, the clamping and grinding mechanism includes a second fixing rod, the second fixing rod is rotatably connected to the first lifting plate, the second fixing rod is located on the inner side of the sleeve and the outer side wall of the second fixing rod fits with the inner side wall of the sleeve, the corresponding ends of the two groups of the second fixing rods are provided with a fifth electric telescopic rod, the telescopic end of the fifth electric telescopic rod is provided with a guide rod, the other end of the guide rod is provided with a mounting plate, the left and right ends of the mounting plate are rotatably connected with a second rotating block, and the other end of the second rotating block is fixedly connected with a support rod.

[0007] Preferably, multiple groups of the support rods are provided with a first telescopic groove at one end away from the mounting plate, a seventh electric telescopic rod is arranged inside the first telescopic groove, multiple groups of the telescopic ends of the seventh electric telescopic rods are provided with a first guide block, multiple groups of the first guide blocks are provided with a second telescopic groove at one end close to the fifth electric telescopic rod, an eighth electric telescopic rod is fixedly connected to the inside of the second telescopic groove, a second guide block is arranged at the telescopic end of the eighth electric telescopic rod, multiple groups of the second guide blocks are provided with a clamping plate at the corresponding end, and multiple groups of clamping blocks are arranged on the inner side of the clamping plate.

[0008] Preferably, both front and rear ends of the outer side walls of the two groups of guide rods are provided with a first rotating block, the outer side walls of multiple groups of the first rotating blocks are rotatably connected to the first rotating frame, the other end of the first rotating frame is provided with a sixth electric telescopic rod, and the telescopic end of the sixth electric telescopic rod is provided with a second rotating frame, multiple groups of the support rods are provided with a second T-shaped groove at one end close to the fifth electric telescopic rod, the second T-shaped groove is slidably connected to the inside of the second T-shaped slide block, the other end of multiple groups of the second T-shaped slide blocks are provided with a third rotating block, the inner side wall of the second rotating frame is rotatably connected to the outer side wall of the third rotating block, and multiple groups of the support rods are provided with a grinding sheet at one end close to the fifth electric telescopic rod, and the grinding sheet is located between the second T-shaped groove and the first guide block.

[0009] Preferably, the ends of the multiple groups of the first lifting plates close to the fixed frame are all rotatably connected to the second rotating shaft, the outer side wall of the second rotating shaft is fixedly connected to the fifth gear, the outer side wall of the second fixing rod is provided with a fourth gear, the fifth gear is respectively meshed with the fourth gear and the first gear, the outer side wall of the two groups of the sleeves close to the first lifting plate is provided with a third gear, the corresponding ends of the two groups of the first lifting plates are all rotatably connected to the first rotating shaft, the first rotating shaft is located between the third gear and the shell, the outer side wall of the first rotating shaft is provided with a second gear, and the second gear is respectively meshed with the first gear and the third gear.

[0010] Preferably, a positioning mechanism is provided at the top of the main board body, and the positioning mechanism includes a third movable groove opened on the left and right sides of the top of the main board body, and a plurality of fourth motors are provided at the bottom of the main board body, and the output ends of the plurality of fourth motors are respectively connected to the two sets of two-way threaded rods, and the inner sides of the plurality of third movable grooves are rotatably connected with the two-way threaded rods, and the front and rear side walls of the two-way threaded rods are threadedly connected with the second sliders, and the tops of the plurality of second sliders are fixedly connected with side plates, and the ends of the plurality of side plates close to the first lifting plates are fixedly connected with baffles, and the corresponding ends of the side plates are fixedly connected with a plurality of first fixed rods, and the plurality of first fixed rods are staggered. The other ends of the plurality of first fixed rods are fixedly connected with roller frames, and the inner side walls of the plurality of roller frames are rotatably connected with guide rollers.

[0011] Preferably, multiple groups of first moving grooves are provided on both sides of the left and right sides of the top of the main board body, the inner sides of the multiple groups of first moving grooves are all penetrated by the main board body and are rotatably connected with first threaded rods, the multiple groups of first threaded rods on the same side are transmission connected with transmission bars, one end of one group of the first threaded rods is provided with a first motor, the outer side walls of the multiple groups of the first threaded rods are threadedly connected with moving blocks, the top of the moving block is provided with a first electric telescopic rod, the bottom ends of the multiple groups of the first lifting plates are provided with lifting grooves on both sides, and the telescopic ends of the multiple groups of the first electric telescopic rods are fixedly connected to the inner tops of the lifting grooves.

[0012] Preferably, a first grinding mechanism is provided in the middle part of the top end of the main board body, the first grinding mechanism includes a second movable groove opened on the front side of the top end of the main board body, first slide grooves are opened on both sides of the left and right sides of the second movable groove, the front end side wall of the second movable groove penetrates the main board body and is rotatably connected with a second threaded rod, a second motor is provided at the front end of the second threaded rod, a movable plate is threadedly connected to the outer side wall of the second threaded rod, first sliding blocks are provided on the lower sides of the left and right ends of the movable plate, and multiple groups of the first sliding blocks are matched with multiple groups of first slide grooves.

[0013] Preferably, a support plate is provided at the rear end of the movable plate, a circular plate is provided at the other end of the support plate, a first T-shaped groove is opened at the other end of the circular plate, multiple groups of first T-shaped sliders are slidably connected to the inner side of the first T-shaped groove, a rotating plate is provided at the other end of the multiple groups of first T-shaped sliders, a third motor is provided at the front end of the circular plate, a rotating shaft is provided at the output end of the third motor passing through the circular plate and is fixedly connected to the front end of the rotating plate, and a grinder is detachably connected to the other end of the rotating plate.

[0014] Preferably, a welding mechanism is provided at the rear side of the middle part of the top of the main board body, and the welding mechanism includes a shell, the bottom end of the shell is fixedly connected to the top of the main board body, a plurality of groups of second electric telescopic rods are provided at the bottom end of the inner side of the shell, and a second lifting plate is provided at the telescopic ends of the plurality of second electric telescopic rods, a fixed plate is provided at the top of the second lifting plate, and a welding gun is provided at the front side of the bottom end of the fixed plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. A ship stern column welding device, through the fifth electric telescopic rod, pulls the guide rod and the mounting plate to move toward the first lifting plate, so that the grinding sheet on the support rod is close to the unwelded part of the stern column, so as to firmly clamp the two ends of the stern column, and ensure that the stern column remains stable during the welding and grinding process. At this time, the third electric telescopic rod is shortened to drive the first gear to move in the through groove, so that the first gear is meshed with the fifth gear, and the fifth motor is started to make the first gear drive the fifth gear and the fourth gear to rotate, so that the second fixed rod is rotated, so that the grinding sheet performs arc grinding on the unwelded part of the stern column to remove the surface oxygen The outer wall of the clamping block is in contact with the slotted portion of the outer wall of the stern column, so that during the grinding process, the clamping block clamps the outer wall of the stern column to ensure that the position of the ship's stern column does not shift during the grinding process. At the same time, during the grinding process, the telescopic length of the sixth electric telescopic rod can be adjusted as needed to control the grinding position and strength to ensure that the arcs of the welding places of the two groups of stern columns are consistent, thereby ensuring that the welding places of the two groups of stern columns are completely fitted, improving the connection strength of the two groups of stern columns after welding, enhancing the bonding strength between the welding material and the stern column, and reducing the generation of welding defects such as pores and slag inclusions.

[0016] 2. A ship stern welding device, by starting the extension of the fourth electric telescopic rod placed in the groove on the sleeve, pushes the anti-skid plate to extend and contact the inner wall of the stern, thereby limiting the stern to prevent the stern from being displaced during the welding process. At the same time, the fourth motor in the positioning mechanism is started, and the fourth motor drives the bidirectional threaded rod to rotate. The two groups of second sliding blocks on the bidirectional threaded rod move towards each other in the third moving groove, driving the side plate to move toward the stern. At the same time, the guide rollers on the staggered first fixed rods contact the stern, supporting and preliminarily positioning the stern. The moving mechanism, through the positioning mechanism, the limiting components in the moving mechanism and the clamping and grinding mechanism, all-roundly firmly clamps and limits the ship's stern, ensuring that the welding gun can always maintain the best welding posture with the welding part, greatly improving the welding accuracy, reducing welding defects caused by position and angle deviations, thereby improving the welding quality, and ensuring the continuity and uniformity of the weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the partial structure of the rotating fixing mechanism of the present invention; Figure 4 It is a schematic plan view of the partial structure of the rotating fixing mechanism of the present invention; Figure 5 It is a schematic diagram of the planing of the local structure of the clamping and grinding mechanism of the present invention; Figure 6 It is a schematic diagram of the overall structure of the mobile mechanism of the present invention; Figure 7 It is a planing schematic diagram of the overall structure of the first grinding mechanism of the present invention; Figure 8 It is a schematic diagram of the overall structure of the positioning mechanism of the present invention; Fig. 9 It is a schematic diagram of the partial structure of the clamping and grinding mechanism of the present invention.

[0018] In the figure: 1, main body; 2, moving mechanism; 3, welding mechanism; 4, first grinding mechanism; 5, positioning mechanism; 6, rotating fixing mechanism; 7, clamping grinding mechanism; 21, first threaded rod; 22, transmission bar; 23, first moving slot; 24, lifting slot; 25, first electric telescopic rod; 26, first lifting plate; 27, moving block; 28, first motor; 31, second electric telescopic rod; 32, second lifting plate; 33, fixing plate; 34, welding gun; 35, shell; 41, first Second motor; 42, second moving groove; 43, second threaded rod; 44, first slide; 45, moving plate; 46, first slider; 47, support plate; 48, round plate; 49, first T-shaped slide; 491, rotating plate; 492, first T-shaped slider; 493, grinder; 494, third motor; 51, fourth motor; 52, third moving groove; 53, bidirectional threaded rod; 54, second slider; 55, side plate; 56, baffle; 57, first fixed rod; 58, roller frame; 59, guide roller; 61, fixed frame; 62, fifth motor; 63, third electric telescopic rod; 64, through slot; 65, first gear; 66, first rotating shaft; 67, second gear; 68, sleeve; 69, third gear; 691, placement slot; 692, fourth electric telescopic rod; 693, anti-slip sheet; 71, second fixed rod; 72, fourth gear; 73, second rotating shaft; 74, fifth gear; 75, fifth electric telescopic rod; 76, guide rod; 77, mounting plate; 78, first rotating shaft Block; 79, the first rotating frame; 791, the sixth electric telescopic rod; 792, the second rotating frame; 793, the second rotating block; 794, the supporting rod; 795, the second T-shaped slide groove; 796, the second T-shaped slide block; 797, the third rotating block; 798, the first telescopic groove; 799, the seventh electric telescopic rod; 701, the first guide block; 702, the second telescopic groove; 703, the eighth electric telescopic rod; 704, the second guide block; 705, the clamping plate; 706, the clamping block; 707, the grinding sheet. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0020] like Figure 1-Figure 9As shown, a ship stern column welding device includes a main body 1, a moving mechanism 2 is arranged at the top of the main body 1, the moving mechanism 2 includes two groups of first lifting plates 26, the two groups of first lifting plates 26 are provided with a through slot 64, the two groups of first lifting plates 26 are respectively placed on the left and right sides of the top of the main body 1, and the left and right ends of the two groups of first lifting plates 26 are provided with a rotating fixing mechanism 6 for limiting and clamping a group of stern columns, and the left group of rotating fixing mechanisms 6 includes a fixing frame 61, the right end of the fixing frame 61 is fixedly connected to the left end of the first lifting plate 26, and one side of the fixing frame 61 is provided with A fifth motor 62 is provided, and a third electric telescopic rod 63 is provided at the output end of the fifth motor 62. The extended end of the third electric telescopic rod 63 passes through a through slot 64 and is provided with a first gear 65. The first gear 65 fits with the through slot 64. The corresponding ends of the two groups of first lifting plates 26 are rotatably connected with sleeves 68. The outer walls of the two groups of sleeves 68 are provided with three groups of placement grooves 691 distributed in an array at equal angles. The multiple groups of placement grooves 691 are fixedly connected with fourth electric telescopic rods 692, and the telescopic ends of the multiple groups of fourth electric telescopic rods 692 are fixedly connected with anti-slip sheets 693.

[0021] In this embodiment, both left and right ends of the first lifting plate 26 are provided with a clamping and grinding mechanism 7 for clamping and grinding a group of unwelded parts of the stern column. The clamping and grinding mechanism 7 includes a second fixed rod 71, which is rotatably connected to the first lifting plate 26. The second fixed rod 71 is located on the inner side of the sleeve 68 and the outer side wall of the second fixed rod 71 fits with the inner side wall of the sleeve 68. The corresponding ends of the two groups of second fixed rods 71 ​​are both provided with a fifth electric telescopic rod 75. The telescopic end of the fifth electric telescopic rod 75 is provided with a guide rod 76, and the other end of the guide rod 76 is provided with a mounting plate 77. The left and right ends of the mounting plate 77 are rotatably connected to the second rotating block 793, and the other end of the second rotating block 793 is fixedly connected to the support rod 794.

[0022] Specifically, the fifth electric telescopic rod 75 pushes the guide rod 76 and the mounting plate 77 to move toward the stern column welding point, so that the guide rod 76 and the mounting plate 77 extend beyond the inside of the stern column, and the sixth electric telescopic rod 791 in the clamping and grinding mechanism 7 is started. The sixth electric telescopic rod 791 drives the second rotating frame 792 to move, and through the rotation connection with the third rotating block 797, the second T-shaped slider 796 slides inside the second T-shaped slide groove 795, thereby unfolding the two sets of support rods 794.

[0023] In this embodiment, a first telescopic groove 798 is provided at one end of multiple groups of support rods 794 away from the mounting plate 77, a seventh electric telescopic rod 799 is arranged inside the first telescopic groove 798, a first guide block 701 is provided at the telescopic end of multiple groups of seventh electric telescopic rods 799, a second telescopic groove 702 is provided at one end of multiple groups of first guide blocks 701 close to the fifth electric telescopic rod 75, an eighth electric telescopic rod 703 is fixedly connected to the inside of the second telescopic groove 702, a second guide block 704 is provided at the telescopic end of the eighth electric telescopic rod 703, a clamping plate 705 is provided at the corresponding end of multiple groups of second guide blocks 704, and a clamping block 706 is provided on the inner side of multiple groups of clamping plates 705.

[0024] Specifically, the seventh electric telescopic rod 799 pushes the first guide block 701, and the eighth electric telescopic rod 703 pushes the second guide block 704, so that the clamping plate 705 and the clamping block 706 gradually approach the groove on the outer wall of the stern column. Subsequently, the seventh electric telescopic rod 799 pulls the first guide block 701 to move into the first telescopic groove 798, so that the outer wall of the clamping block 706 contacts the groove on the outer wall of the stern column.

[0025] In this embodiment, the front and rear ends of the outer sides of the two groups of guide rods 76 are both provided with first rotating blocks 78, the outer sides of multiple groups of first rotating blocks 78 are rotatably connected to the first rotating frame 79, the other end of the first rotating frame 79 is provided with a sixth electric telescopic rod 791, and the telescopic end of the sixth electric telescopic rod 791 is provided with a second rotating frame 792, and the ends of multiple groups of support rods 794 close to the fifth electric telescopic rod 75 are all provided with a second T-shaped slide groove 795, the inner side of the second T-shaped slide groove 795 is slidably connected to the second T-shaped slider 796, and the other ends of multiple groups of second T-shaped sliders 796 are all provided with a third rotating block 797, the inner side wall of the second rotating frame 792 is rotatably connected to the outer side wall of the third rotating block 797, and the ends of multiple groups of support rods 794 close to the fifth electric telescopic rod 75 are provided with a grinding sheet 707, and the grinding sheet 707 is located between the second T-shaped slide groove 795 and the first guide block 701.

[0026] Specifically, the fifth electric telescopic rod 75 is used to pull the guide rod 76 and the mounting plate 77 toward the first lifting plate 26, so that the grinding sheet 707 on the support rod 794 is close to the unwelded part of the stern column, thereby firmly clamping the two ends of the stern column, and the unwelded part of the stern column is arc-grinded by the grinding sheet 707 to remove the oxide layer, impurities, etc. on the surface to improve the welding quality. During the grinding process, the telescopic length of the sixth electric telescopic rod 791 can be adjusted as needed to control the grinding position and strength to ensure that the curvature of the two sets of stern column welding points is consistent.

[0027] In this embodiment, the ends of the multiple groups of first lifting plates 26 close to the fixed frame 61 are all rotatably connected to the second rotating shaft 73, the outer wall of the second rotating shaft 73 is fixedly connected to the fifth gear 74, the outer wall of the second fixed rod 71 is provided with a fourth gear 72, the fifth gear 74 is respectively meshed with the fourth gear 72 and the first gear 65, the outer wall of the two groups of sleeves 68 close to the first lifting plate 26 is provided with a third gear 69, the corresponding ends of the two groups of first lifting plates 26 are all rotatably connected to the first rotating shaft 66, the first rotating shaft 66 is located between the third gear 69 and the shell 35, the outer wall of the first rotating shaft 66 is provided with a second gear 67, the second gear 67 is respectively meshed with the first gear 65 and the third gear 69.

[0028] Specifically, the third electric telescopic rod 63 is shortened to drive the first gear 65 to move in the through slot 64, so that the first gear 65 is meshed with the fifth gear 74, and the fifth motor 62 is started, so that the first gear 65 drives the fifth gear 74 and the fourth gear 72 to rotate, so that the second fixed rod 71 is rotated, and the third electric telescopic rod 63 is extended to drive the first gear 65 to move in the through slot 64, so that the first gear 65 is meshed with the second gear 67, and the fifth motor 62 is started, so that the first gear 65 drives the second gear 67 and the third gear 69 to rotate, so that the two groups of sleeves 68 simultaneously drive the left and right groups of stern columns to rotate.

[0029] In this embodiment, a positioning mechanism 5 is provided at the top of the main board body 1, and the positioning mechanism 5 includes a third movable groove 52 opened on the left and right sides of the top of the main board body 1, and a plurality of fourth motors 51 are provided at the bottom of the main board body 1, and the output ends of the plurality of fourth motors 51 are respectively connected to the two sets of bidirectional threaded rods 53, and the inner sides of the plurality of third movable grooves 52 are rotatably connected with the bidirectional threaded rods 53, and the front and rear side walls of the bidirectional threaded rods 53 are threadedly connected with the second sliders 54, and the tops of the plurality of second sliders 54 are fixedly connected with side plates 55, and the ends of the plurality of side plates 55 close to the first lifting plate 26 are fixedly connected with baffles 56, and the corresponding ends of the side plates 55 are fixedly connected with a plurality of first fixed rods 57, and the plurality of first fixed rods 57 are staggered, and the other ends of the plurality of first fixed rods 57 are fixedly connected with roller frames 58, and the inner side walls of the plurality of roller frames 58 are rotatably connected with guide rollers 59.

[0030] Specifically, the fourth motor 51 in the positioning mechanism 5 is started, and the fourth motor 51 drives the bidirectional threaded rod 53 to rotate. The two groups of second sliding blocks 54 on the bidirectional threaded rod 53 move toward each other in the third moving groove 52, driving the side plate 55 to move toward the stern column. At the same time, the guide rollers 59 on the staggered first fixed rods 57 contact the stern column, which supports and initially positions the stern column.

[0031] In this embodiment, multiple groups of first moving grooves 23 are provided on both sides of the left and right sides of the top of the main board body 1, and the inner sides of the multiple groups of first moving grooves 23 all penetrate the main board body 1 and are rotatably connected to the first threaded rods 21, and the multiple groups of first threaded rods 21 on the same side are transmission-connected to the transmission bar 22, and a first motor 28 is provided at one end of a group of first threaded rods 21, and the outer walls of the multiple groups of first threaded rods 21 are threadedly connected to the moving blocks 27, and the top of the moving blocks 27 is provided with the first electric telescopic rod 25, and the lifting grooves 24 are provided on both sides of the front and rear ends of the bottom ends of the multiple groups of first lifting plates 26, and the telescopic ends of the multiple groups of first electric telescopic rods 25 are fixedly connected to the top of the inner side of the lifting grooves 24.

[0032] Specifically, the first motor 28 in the moving mechanism 2 is started, and the first motor 28 drives a group of first threaded rods 21 to rotate, and the other first threaded rods 21 on the same side are rotated synchronously through the transmission bar 22. When the first threaded rod 21 rotates, the moving block 27 threadedly connected thereto makes a linear motion in the first moving groove 23, thereby driving the two groups of first lifting plates 26 to move toward each other, so that the left and right groups of stern column welding points fit together.

[0033] In this embodiment, a first grinding mechanism 4 is provided at the middle part of the top of the main board body 1, and the first grinding mechanism 4 includes a second movable groove 42 opened on the front side of the top of the main board body 1, and first slide grooves 44 are opened on both sides of the left and right sides of the second movable groove 42. The front end side wall of the second movable groove 42 penetrates the main board body 1 and is rotatably connected with a second threaded rod 43. A second motor 41 is provided at the front end of the second threaded rod 43, and a movable plate 45 is threadedly connected to the outer wall of the second threaded rod 43. First sliders 46 are provided on the lower sides of the left and right ends of the movable plate 45, and multiple groups of first sliders 46 are matched with multiple groups of first slide grooves 44.

[0034] Specifically, the second motor 41 in the first grinding mechanism 4 is started to drive the second threaded rod 43 to rotate, so that the movable plate 45 moves to a suitable position in the second movable groove 42, and multiple groups of first sliders 46 are matched with multiple groups of first slide grooves 44 to ensure stable rotation of the movable plate 45.

[0035] In this embodiment, a support plate 47 is provided at the rear end of the movable plate 45, a circular plate 48 is provided at the other end of the support plate 47, a first T-shaped slide groove 49 is opened at the other end of the circular plate 48, and multiple groups of first T-shaped sliders 492 are slidably connected to the inner side of the first T-shaped slide groove 49, and a rotating plate 491 is provided at the other end of the multiple groups of first T-shaped sliders 492, and a third motor 494 is provided at the front end of the circular plate 48. The output end of the third motor 494 passes through the circular plate 48 and is provided with a rotating shaft and is fixedly connected to the front end of the rotating plate 491, and the other end of the rotating plate 491 is detachably connected to a grinder 493.

[0036] Specifically, the third motor 494 is started to drive the rotating plate 491 and the grinder 493 to rotate, and the two groups of fifth motors 62 drive the two groups of sleeves 68 to simultaneously drive the left and right groups of stern columns to rotate, so that the grinder 493 performs a comprehensive grinding process on the stern column welding position.

[0037] In this embodiment, a welding mechanism 3 is provided at the rear side of the middle part of the top of the main board body 1, and the welding mechanism 3 includes a shell 35, the bottom end of the shell 35 is fixedly connected to the top of the main board body 1, and a plurality of groups of second electric telescopic rods 31 are provided at the bottom end of the inner side of the shell 35, and a second lifting plate 32 is provided at the telescopic ends of the plurality of second electric telescopic rods 31, a fixing plate 33 is provided at the top of the second lifting plate 32, and a welding gun 34 is provided at the front side of the bottom end of the fixing plate 33.

[0038] Specifically, the second electric telescopic rod 31 in the welding mechanism 3 is started, the height of the fixing plate 33 and the welding gun 34 is adjusted, the welding gun 34 is aimed at the welding part of the stern column, and the welding gun 34 starts to weld the ship stern column.

[0039] It should be noted that the present invention is a ship stern welding device. The user will hoist the ship stern onto the main body 1 through external equipment and place it on the outside of the rotating and fixing mechanism 6, so that the end of the stern that is not welded contacts the baffle 56 on the side plate 55, and start the fourth electric telescopic rod 692 in the placement groove 691 on the sleeve 68 to extend, and push the anti-slip sheet 693 to extend and contact the inner wall of the stern, so as to limit the stern to prevent the stern from being displaced during the welding process. At the same time, the fourth motor 51 in the positioning mechanism 5 is started, and the fourth motor 51 drives the bidirectional threaded rod 53 to rotate, and the two groups of second sliders 54 on the bidirectional threaded rod 53 move toward each other in the third moving groove 52, driving the side plate 55 to move toward the stern, and at the same time staggered. The guide roller 59 on the first fixing rod 57 of the cloth contacts with the stern column, plays a role in supporting and initially positioning the stern column. After the stern column is initially fixed at a suitable position in the horizontal direction, the first lifting plate 26 is raised or lowered by the first electric telescopic rod 25 according to the actual welding height requirement of the ship's stern column, and the stern column is adjusted to a suitable welding height. The fifth electric telescopic rod 75 in the clamping and grinding mechanism 7 is started, and the fifth electric telescopic rod 75 pushes the guide rod 76 and the mounting plate 77 to move toward the welding position of the stern column, so that the guide rod 76 and the mounting plate 77 exceed the inside of the stern column. The sixth electric telescopic rod 791 in the clamping and grinding mechanism 7 is started, and the sixth electric telescopic rod 791 drives the second rotating frame 792 to move, and the rotation connection with the third rotating block 797 is realized. , so that the second T-shaped sliding block 796 slides inside the second T-shaped sliding groove 795, thereby unfolding the two sets of support rods 794, and then starting the seventh electric telescopic rod 799 and the eighth electric telescopic rod 703, the seventh electric telescopic rod 799 pushes the first guide block 701, and the eighth electric telescopic rod 703 pushes the second guide block 704, so that the clamping plate 705 and the clamping block 706 gradually approach the groove of the outer wall of the stern column, and then the seventh electric telescopic rod 799 pulls the first guide block 701 to move inside the first telescopic groove 798, so that the outer wall of the clamping block 706 contacts the groove of the outer wall of the stern column, so that during the grinding process, the clamping block 706 clamps the outer wall of the stern column to ensure that the position of the ship's stern column does not deviate during the grinding process. Then, the fifth electric telescopic rod 75 pulls the guide rod 76 and the mounting plate 77 to move toward the first lifting plate 26, so that the grinding sheet 707 on the support rod 794 is close to the unwelded part of the stern column, so as to firmly clamp the two ends of the stern column to ensure that the stern column remains stable during the welding and grinding process. At this time, the third electric telescopic rod 63 is shortened to drive the first gear 65 to move in the through groove 64, so that the first gear 65 is meshed with the fifth gear 74, and the fifth motor 62 is started to make the first gear 65 drive the fifth gear 74 and the fourth gear 72 to rotate, so that the second fixed rod 71 is rotated, so that the grinding sheet 707 performs arc grinding on the unwelded part of the stern column to remove the oxide layer, impurities, etc. on the surface, thereby improving the welding quality. During the grinding process,The telescopic length of the sixth electric telescopic rod 791 can be adjusted as needed to control the position and strength of the grinding to ensure that the arcs of the two sets of stern column welding points are consistent, thereby ensuring that the two sets of stern column welding points are completely fitted and improving the connection strength after welding. After the arc grinding of the left and right sets of stern column welding points is completed, the sixth electric telescopic rod 791, the seventh electric telescopic rod 799 and the eighth electric telescopic rod 703 are reversely started to store the multiple sets of support rods 794, and then the fifth electric telescopic rod 75 is started to reset the guide rod 76 and the mounting plate 77.

[0040] After the reset is completed, the first motor 28 in the moving mechanism 2 is started, and the first motor 28 drives a group of first threaded rods 21 to rotate, and the other first threaded rods 21 on the same side are synchronously rotated through the transmission bar 22. When the first threaded rod 21 rotates, the moving block 27 threadedly connected thereto makes a linear motion in the first moving groove 23, thereby driving the two groups of first lifting plates 26 to move toward each other, so that the left and right groups of stern column welding positions are fitted together, and the second electric telescopic rod 31 in the welding mechanism 3 is started, and the heights of the fixing plate 33 and the welding gun 34 are adjusted, so that the welding gun 34 is aligned with the welding position of the stern column, and the welding gun 34 starts to weld the ship's stern column. During the welding process, the third electric telescopic rod 63 is extended to drive the first gear 65 to move in the through groove 64, so that the first gear 65 is meshed with the second gear 67, and the fifth motor 62 is started, so that the first gear 65 drives the first gear 65 to move. The second gear 67 and the third gear 69 rotate, so that the two groups of sleeves 68 simultaneously drive the left and right groups of stern columns to rotate, so that the welding gun 34 performs comprehensive welding on the outer wall of the stern column. At the same time, the operator can observe the welding situation and, according to actual needs, use the moving mechanism 2 and the second electric telescopic rod 31 to fine-tune the position and angle of the stern column to ensure the continuity and quality of the welding. When the welding work of the ship's stern column is completed, the welding equipment is turned off. At this time, the second motor 41 in the first grinding mechanism 4 is started to drive the second threaded rod 43 to rotate, so that the moving plate 45 moves to a suitable position in the second moving groove 42, and then the third motor 494 is started to drive the rotating plate 491 and the grinder 493 to rotate, and the two groups of fifth motors 62 drive the two groups of sleeves 68 to drive the left and right groups of stern columns to rotate at the same time, so that the grinder 493 performs comprehensive grinding on the stern column welding point.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A ship stern welding device, comprising a main plate body (1), characterized in that: A moving mechanism (2) is arranged at the top of the main body (1), and the moving mechanism (2) includes two groups of first lifting plates (26), and the two groups of first lifting plates (26) are both provided with a through slot (64). The two groups of first lifting plates (26) are respectively arranged on the left and right sides of the top of the main body (1), and the left and right ends of the two groups of first lifting plates (26) are both provided with a rotating fixing mechanism (6) for limiting and clamping a group of stern columns, and the left group of the rotating fixing mechanism (6) includes a fixing frame (61), and the right end of the fixing frame (61) is fixedly connected to the left end of the first lifting plate (26), and a fifth motor (62) is arranged on one side of the fixing frame (61). The output end of the fifth motor (62) is provided with a third electric telescopic rod (63), the extended end of the third electric telescopic rod (63) passes through a through slot (64) and is provided with a first gear (65), the first gear (65) is matched with the through slot (64), the corresponding ends of the two groups of the first lifting plates (26) are rotatably connected with sleeves (68), the outer walls of the two groups of the sleeves (68) are provided with three groups of placement grooves (691) distributed in an array at equal angles, the multiple groups of the placement grooves (691) are fixedly connected with fourth electric telescopic rods (692), and the telescopic ends of the multiple groups of the fourth electric telescopic rods (692) are fixedly connected with anti-slip sheets (693).

2. A ship stern welding device according to claim 1, characterized in that: The left and right ends of the first lifting plate (26) are both provided with a clamping and grinding mechanism (7) for clamping and grinding a group of unwelded parts of the stern column. The clamping and grinding mechanism (7) comprises a second fixing rod (71). The second fixing rod (71) is rotatably connected to the first lifting plate (26). The second fixing rod (71) is located inside the sleeve (68) and the outer wall of the second fixing rod (71) fits with the inner wall of the sleeve (68). The corresponding ends of the two groups of the second fixing rods (71) are both provided with a fifth electric telescopic rod (75). The telescopic end of the fifth electric telescopic rod (75) is provided with a guide rod (76). The other end of the guide rod (76) is provided with a mounting plate (77). The left and right ends of the mounting plate (77) are both rotatably connected with a second rotating block (793). The other end of the second rotating block (793) is fixedly connected with a support rod (794).

3. A ship stern welding device according to claim 2, characterized in that: A first telescopic groove (798) is provided at one end of the plurality of support rods (794) away from the mounting plate (77), a seventh electric telescopic rod (799) is provided inside the first telescopic groove (798), a first guide block (701) is provided at the telescopic end of the plurality of seventh electric telescopic rods (799), a second telescopic groove (702) is provided at one end of the plurality of first guide blocks (701) close to the fifth electric telescopic rod (75), an eighth electric telescopic rod (703) is fixedly connected inside the second telescopic groove (702), a second guide block (704) is provided at the telescopic end of the eighth electric telescopic rod (703), a clamping plate (705) is provided at the corresponding end of the plurality of second guide blocks (704), and a clamping block (706) is provided inside the plurality of clamping plates (705).

4. A ship stern welding device according to claim 2, characterized in that: The outer walls of the two groups of guide rods (76) are both provided with first rotating blocks (78) at both ends, and the outer walls of the multiple groups of the first rotating blocks (78) are rotatably connected to the first rotating frame (79), and the other end of the first rotating frame (79) is provided with a sixth electric telescopic rod (791), and the telescopic end of the sixth electric telescopic rod (791) is provided with a second rotating frame (792), and the end of the multiple groups of support rods (794) close to the fifth electric telescopic rod (75) is provided with a second T-shaped sliding groove (795), and the second A second T-shaped slider (796) is slidably connected to the inner side of the T-shaped slide groove (795), and a third rotating block (797) is provided at the other end of each of the plurality of second T-shaped sliders (796). The inner wall of the second rotating frame (792) is rotatably connected to the outer wall of the third rotating block (797). A grinding sheet (707) is provided at one end of each of the plurality of support rods (794) close to the fifth electric telescopic rod (75), and the grinding sheet (707) is located between the second T-shaped slide groove (795) and the first guide block (701).

5. A ship stern welding device according to claim 2, characterized in that: The ends of the multiple groups of the first lifting plates (26) close to the fixed frame (61) are all rotatably connected to the second rotating shaft (73), the outer wall of the second rotating shaft (73) is fixedly connected to the fifth gear (74), the outer wall of the second fixed rod (71) is provided with a fourth gear (72), the fifth gear (74) is respectively meshed with the fourth gear (72) and the first gear (65), the outer wall of the two groups of the sleeves (68) close to the first lifting plates (26) is provided with a third gear (69), the corresponding ends of the two groups of the first lifting plates (26) are all rotatably connected to the first rotating shaft (66), the first rotating shaft (66) is located between the third gear (69) and the housing (35), the outer wall of the first rotating shaft (66) is provided with a second gear (67), the second gear (67) is respectively meshed with the first gear (65) and the third gear (69).

6. A ship stern welding device according to claim 1, characterized in that: The top of the main board body (1) is provided with a positioning mechanism (5), the positioning mechanism (5) comprises third movable grooves (52) provided on the left and right sides of the top of the main board body (1), the bottom of the main board body (1) is provided with a plurality of fourth motors (51), the output ends of the plurality of fourth motors (51) are respectively connected to two sets of bidirectional threaded rods (53), the inner sides of the plurality of third movable grooves (52) are all rotatably connected to the bidirectional threaded rods (53), and the front and rear side walls of the bidirectional threaded rods (53) are both threadedly connected to the second sliders (5 4), the top ends of the plurality of second sliding blocks (54) are all fixedly connected to side plates (55), the ends of the plurality of side plates (55) close to the first lifting plate (26) are all fixedly connected to baffles (56), the corresponding ends of the side plates (55) are all fixedly connected to a plurality of first fixed rods (57), the plurality of first fixed rods (57) are staggeredly distributed, the other ends of the plurality of first fixed rods (57) are all fixedly connected to roller frames (58), and the inner side walls of the plurality of roller frames (58) are all rotatably connected to guide rollers (59).

7. A ship stern welding device according to claim 1, characterized in that: The top left and right sides of the main board body (1) are provided with a plurality of first moving grooves (23); the inner sides of the plurality of first moving grooves (23) penetrate the main board body (1) and are rotatably connected to a first threaded rod (21); the plurality of first threaded rods (21) on the same side are transmission-connected to a transmission bar (22); one end of a group of the first threaded rods (21) is provided with a first motor (28); the outer side walls of the plurality of first threaded rods (21) are threadedly connected to a moving block (27); the top of the moving block (27) is provided with a first electric telescopic rod (25); the bottom front and rear sides of the plurality of first lifting plates (26) are provided with lifting grooves (24); the telescopic ends of the plurality of first electric telescopic rods (25) are fixedly connected to the inner top of the lifting grooves (24).

8. A ship stern welding device according to claim 1, characterized in that: A first grinding mechanism (4) is provided at the middle of the top of the main body (1), the first grinding mechanism (4) comprises a second movable groove (42) provided at the front side of the top of the main body (1), first slide grooves (44) are provided on both the left and right sides of the second movable groove (42), the front end side wall of the second movable groove (42) penetrates the main body (1) and is rotatably connected with a second threaded rod (43), a second motor (41) is provided at the front end of the second threaded rod (43), a movable plate (45) is threadedly connected to the outer side wall of the second threaded rod (43), and first sliders (46) are provided at the lower sides of both left and right ends of the movable plate (45), and a plurality of groups of the first sliders (46) are matched with a plurality of groups of the first slide grooves (44).

9. A ship stern welding device according to claim 8, characterized in that: A support plate (47) is provided at the rear end of the movable plate (45), a circular plate (48) is provided at the other end of the support plate (47), a first T-shaped slide groove (49) is provided at the other end of the circular plate (48), a plurality of groups of first T-shaped slide blocks (492) are slidably connected to the inner side of the first T-shaped slide groove (49), a rotating plate (491) is provided at the other end of the plurality of first T-shaped slide blocks (492), a third motor (494) is provided at the front end of the circular plate (48), a rotating shaft is provided at the output end of the third motor (494) passing through the circular plate (48) and is fixedly connected to the front end of the rotating plate (491), and a grinder (493) is detachably connected to the other end of the rotating plate (491).

10. A ship stern welding device according to claim 1, characterized in that: A welding mechanism (3) is arranged at the rear side of the middle part of the top end of the main body (1), and the welding mechanism (3) comprises a shell (35), the bottom end of the shell (35) is fixedly connected to the top end of the main body (1), a plurality of groups of second electric telescopic rods (31) are arranged at the bottom end of the inner side of the shell (35), and the telescopic ends of the plurality of groups of second electric telescopic rods (31) are all provided with a second lifting plate (32), a fixing plate (33) is arranged at the top end of the second lifting plate (32), and a welding gun (34) is arranged at the front side of the bottom end of the fixing plate (33).

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