Rudder horn boring machine fixing device

Abstract

The invention relates to the technical field of rudder horns, in particular to a rudder horn boring machine fixing device which comprises three supporting mechanisms, two connecting assemblies are connected among the three supporting mechanisms, each supporting mechanism comprises a supporting seat, an arc-shaped groove is formed in the outer wall of the top of each supporting seat, and a first arc-shaped seat is fixedly connected to the inner wall of the bottom of each arc-shaped groove. And two communicated grooves are formed in the outer wall of the top of the supporting seat. The boring machine is conveniently supported and fixed through the three opposite supporting mechanisms, meanwhile, the three supporting mechanisms are conveniently connected through the arrangement of the two connecting assemblies, then the three supporting mechanisms form a whole, the boring machine can be conveniently and stably supported, meanwhile, the boring machine can be conveniently conveyed through rollers arranged on the supporting mechanisms, and the boring machine can be conveniently conveyed through the rollers arranged on the supporting mechanisms. And a tensioning assembly and a pressing seat in the supporting mechanism are matched, so that the boring machine is conveniently pressed and fixed, and the problem that an existing rudder horn boring machine is inconvenient to fix and lighten during machining is solved.

Description

Technical Field

[0001] The invention relates to the technical field of rudder hanging arms, in particular to a rudder hanging arm boring and fixing device. Background Art

[0002] A rudder is a device connected to the hull of a ship that controls its direction of motion. A semi-suspended rudder is a rudder in which the upper half is supported on a rudder knob on the rudder post or rudder arm, while the lower half is suspended. The rudder arm is the arm-shaped component that supports the semi-suspended rudder. During ship construction, the manufacturing accuracy of the rudder arm is difficult to control. This is primarily due to the structural characteristics of the rudder arm, which consists of two upper and lower cylindrical castings (called the upper and lower rudder bearings), which are used to secure the rudder stock in subsequent processes.

[0003] The boring of the rudder arm is carried out at the slipway stage. The workshop is faced with the current situation of transferring the bored rods back and forth. Currently, the workshop stores and transfers the bored rods on three wooden shelves. The three wooden shelves are not a whole, which makes the operation inconvenient and there is a risk of objects falling. Summary of the Invention

[0004] The purpose of the present invention is to solve or at least alleviate the problems existing in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a rudder arm boring and fixing device, comprising three supporting mechanisms, two connecting components connected between the three supporting mechanisms, the supporting mechanism comprising a support seat, and an arc-shaped groove is provided on the top outer wall of the support seat, and an arc-shaped seat one is fixedly connected to the bottom inner wall of the arc-shaped groove, two interconnected grooves are provided on the top outer wall of the support seat, and tensioning components are installed on the inner walls of the two grooves, a pressing seat with the same arc-shaped structure is installed between the two tensioning assemblies, and an arc-shaped seat two is fixedly connected to the bottom outer wall of the pressing seat, the outer wall on the opposite side of the support seat is fixedly connected to the same support frame, and a limiting component is installed on the top outer wall of the support frame, and two symmetrically arranged rectangular openings are provided on the outer wall of one side of the support seat.

[0006] By adopting the above structure, the cooperation between the supporting mechanism and the connecting assembly facilitates the fixation of the rudder arm boring row, the arc groove on the supporting seat facilitates the installation of the arc seat one, the setting of the arc seat one facilitates the support of the rudder arm boring row, two tensioning assemblies are provided in the supporting seat, and the cooperation between the tensioning assembly, the pressing seat and the arc seat two facilitates the pressing of the rudder arm boring row on the arc seat one, and the setting of the limiting assembly facilitates the fixing of the connecting assembly on the supporting seat, thereby improving the stability of the three supporting mechanisms.

[0007] In one possible implementation, the tensioning assembly includes a tensioning box fixedly connected to the inner wall of the groove, and the inner wall of the tensioning box is slidably connected to an adjustment seat, the top outer wall of the adjustment seat is fixedly connected to a driving arm, and the driving arm is fixedly connected to the clamping seat.

[0008] By adopting the above structure, the groove is opened to facilitate the installation of the tensioning box, the setting of the tensioning box facilitates the sliding installation of the adjustment seat, and the setting of the adjustment seat facilitates the installation of the driving arm. When the driving arm moves, it directly pulls the pressing seat to move.

[0009] In one possible implementation, the inner wall of the bottom of the tensioning box is rotatably connected to screw rod 2, the adjustment seat and the drive arm are both screwed on the outer wall of screw rod 2, the outer wall of the bottom of the tensioning box is rotatably connected to a synchronous wheel, and one end of the synchronous wheel drive shaft is fixedly connected to screw rod 2, and the same synchronous belt is connected between the synchronous wheels on the two tensioning assemblies.

[0010] By adopting the above structure, the installation of screw 2 is facilitated by the setting of the tensioning box. When screw 2 rotates, it directly drives the adjustment seat and the driving arm to slide in the tensioning box. The cooperation between the synchronous wheel and the synchronous belt facilitates the synchronous rotation of screw 2 in the two tensioning components.

[0011] In one possible implementation, the inner wall of the tensioning box in one of the tensioning assemblies is rotatably connected to a worm, the outer wall of the second screw is fixedly connected to a worm wheel, and the worm wheel and the worm are meshed with each other, and the outer wall of one side of the support seat is rotatably connected to a rotating disk, and one end of the rotating disk drive shaft is fixedly connected to the worm.

[0012] By adopting the above structure, the rotating disk drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel directly drives the second screw to rotate, thereby pulling the pressing seat to press the rudder arm boring row.

[0013] In a possible implementation, an inner wall of one side of the two rectangular openings is provided with an opening, and the inner walls of the two openings are slidably connected to a sliding seat, and an outer wall of one side of the two sliding seats is fixedly connected to a plurality of teeth.

[0014] By adopting the above structure, the sliding installation of the sliding seat is facilitated by the setting of the opening on the rectangular opening, and the teeth are driven to move synchronously when the sliding seat slides.

[0015] In one possible implementation, the bottom outer wall of the support seat is provided with two symmetrically arranged rectangular grooves, and the inner walls of the two rectangular grooves are rotatably connected to rollers, the outer walls on both sides of the support seat are fixedly connected to fixing plates, and the outer walls of the two fixing plates are threaded with bolt rods, the top outer walls of the two bolt rods are fixedly connected to handwheels, and the bottom outer walls of the two bolt rods are rotatably connected to support feet.

[0016] By adopting the above structure, the rollers arranged at the bottom of the support seat facilitate the movement of the auxiliary support seat, thereby facilitating the transportation of the rudder arm boring row. The rotation of the handwheel drives the bolt rod to rotate. When the bolt rod rotates, it cooperates with the support foot to lift the support seat, thereby improving the stability of the support seat.

[0017] In one possible implementation, the connection assembly includes an I-beam, and a plurality of equally spaced grooves are provided on one outer wall of the I-beam, the specifications of the grooves match the specifications of the teeth, and the I-beam is inserted into the inner wall of the rectangular opening.

[0018] By adopting the above structure, the support seat can be connected conveniently through the arrangement of the I-beam, and the tooth grooves on the I-beam facilitate the insertion of the teeth. When the teeth are inserted into the tooth grooves, it is convenient to fix the I-beam on the support seat.

[0019] In one possible implementation, the limit assembly includes a limit box fixedly connected to the support frame, and the outer wall of the bottom of the limit box is rotatably connected to a prism, an installation cavity is opened inside the limit box, and rectangular openings are opened on the inner walls on both sides of the installation cavity, the inner walls of the two rectangular openings are slidably connected to a drive seat, and one end of the two drive seats is respectively fixedly connected to the two sliding seats, the inner walls on both sides of the installation cavity are rotatably connected to the same screw rod 1, and one end of the screw rod 1 is fixedly connected to the prism.

[0020] By adopting the above structure, the setting of the limit box facilitates the installation of the screw rod 1, the setting of the prism facilitates manual rotation of the screw rod 1, and the setting of the drive seat facilitates the movement of the teeth in cooperation with the sliding seat.

[0021] In a possible implementation, a threaded sleeve is threadedly connected to the outer wall of the screw rod, and connecting rods are rotatably connected to the outer walls of both sides of the threaded sleeve, and one end of the two connecting rods is rotatably connected to the two driving seats respectively.

[0022] By adopting the above structure, the threaded sleeve is driven to move when the screw rod rotates, and when the threaded sleeve moves, it cooperates with the connecting rod to drive the two driving seats to move toward or away from each other.

[0023] In one possible implementation, the outer wall of the screw rod is screwed with a trapezoidal block, and the outer walls on both sides of the trapezoidal block are provided with sliding grooves, the inner walls of the two sliding grooves are slidably connected with wedge plates, and one end of the two wedge plates is respectively fixedly connected to the two drive seats.

[0024] By adopting the above structure, the screw is rotated to drive the trapezoidal block to move. When the trapezoidal block moves upward, it drives the two wedge plates to move away from each other. When the trapezoidal block moves downward, it drives the two wedge plates to move toward each other.

[0025] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention facilitates the support and fixation of the boring bar by three mutually opposed support mechanisms. At the same time, the arrangement of two connecting components facilitates the connection of the three support mechanisms, thereby forming the three support mechanisms into a whole, thereby facilitating the stable support of the boring bar. At the same time, the rollers arranged on the support mechanisms facilitate the transportation of the boring bar. The cooperation between the tensioning component and the pressing seat in the support mechanism facilitates the pressing and fixing of the boring bar, thus solving the problem that the existing boring bar of the rudder arm is inconvenient to be fixed and transported during processing. (2) The present invention provides two tensioning assemblies on the support seat. The two tensioning assemblies cooperate with the pressing seat to press and fix the boring bar, thereby preventing the boring bar from shaking and falling during the transportation process. At the same time, the two tensioning assemblies act synchronously, thereby facilitating the stable driving of the pressing seat. (3) The present invention provides a limit assembly on the support base. The setting of the limit assembly facilitates fixing the I-beam on the support base, thereby facilitating connecting the three support mechanisms together to form a whole, thereby facilitating the overall transportation and fixation of the boring bar. In addition, support feet are provided on the support base. The setting of the support feet facilitates improving the stability of the support base. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection assembly structure of the present invention; Figure 3 It is a schematic structural diagram of the support mechanism of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the support mechanism of the present invention; Figure 5 It is a schematic structural diagram of the limit assembly of the present invention; Figure 6 It is a schematic structural diagram of the tensioning assembly of the present invention; Figure 7 It is a schematic cross-sectional view of the tensioning assembly of the present invention; Figure 8 This is a schematic cross-sectional view of a position limiting assembly according to a first embodiment of the present invention; Figure 9 This is a schematic cross-sectional view of the limiting component according to the second embodiment of the present invention.

[0027] In the figure: 1. Support mechanism; 2. Connecting assembly; 3. I-beam; 4. Tooth groove; 5. Support seat; 6. Arc seat 1; 7. Pressing seat; 8. Arc seat 2; 9. Tensioning assembly; 11. Rectangular opening; 12. Limiting assembly; 13. Fixing plate; 14. Bolt rod; 15. Support foot; 16. Handwheel; 17. Support frame; 18. Roller; 19. Limiting box; 20. Prism; 21. Sliding seat; 22. Tooth; 23. Tensioning box; 24. Drive arm; 25. Mounting cavity; 26. Threaded sleeve; 27. Connecting rod; 28. Drive seat; 29. ​​Screw 1; 30. Rotating disk; 31. Synchronous belt; 32. Synchronous wheel; 33. Screw 2; 34. Worm gear; 35. Worm; 36. Adjusting seat; 37. Wedge plate; 38. Trapezoidal block. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1 See also Figure 1-8 A rudder arm boring and fixing device includes three supporting mechanisms 1, two connecting components 2 are connected between the three supporting mechanisms 1, the supporting mechanism 1 includes a supporting seat 5, and the top outer wall of the supporting seat 5 is provided with an arc groove, and the bottom inner wall of the arc groove is fixedly connected with an arc seat 6, the top outer wall of the supporting seat 5 is provided with two interconnected grooves, and the inner walls of the two grooves are both installed with a tensioning component 9, a pressing seat 7 with the same arc structure is installed between the two tensioning components 9, and the bottom outer wall of the pressing seat 7 is fixedly connected with an arc seat 2 8, the outer wall of the opposite side of the supporting seat 5 is fixedly connected with the same supporting frame 17, and the top outer wall of the supporting frame 17 is installed with a limiting component 12, and the outer wall of one side of the supporting seat 5 is provided with two symmetrically arranged rectangular openings 11.

[0030] When in use, the cooperation between the supporting mechanism 1 and the connecting component 2 facilitates the fixation of the rudder arm boring row. The arc groove on the supporting seat 5 facilitates the installation of the arc seat 1 6. The setting of the arc seat 1 6 facilitates the support of the rudder arm boring row. Two tensioning components 9 are set in the supporting seat 5. The cooperation between the tensioning component 9, the pressing seat 7 and the arc seat 2 8 facilitates the pressing of the rudder arm boring row on the arc seat 1 6. The setting of the limiting component 12 facilitates the fixing of the connecting component 2 on the supporting seat 5, thereby improving the stability of the three supporting mechanisms 1.

[0031] For details, please refer to Figure 6-7The tensioning assembly 9 includes a tensioning box 23 fixedly connected to the inner wall of the groove, and the inner wall of the tensioning box 23 is slidably connected to the adjusting seat 36, the outer wall of the top of the adjusting seat 36 is fixedly connected to the driving arm 24, and the driving arm 24 is fixedly connected to the pressing seat 7. The opening of the groove facilitates the installation of the tensioning box 23, the setting of the tensioning box 23 facilitates the sliding installation of the adjusting seat 36, and the setting of the adjusting seat 36 facilitates the installation of the driving arm 24. When the driving arm 24 moves, it directly pulls the pressing seat 7 to move. The inner wall of the bottom of the tensioning box 23 is rotatably connected to the screw 23, and the adjusting seat 36 and the driving arm 24 are both screwed on the outer wall of the second screw 33. The outer wall of the bottom of the tensioning box 23 is rotatably connected to the synchronous wheel 32, and one end of the transmission shaft of the synchronous wheel 32 is fixedly connected to the second screw 33. The same synchronous belt 31 is connected between the synchronous wheels 32 on the two tensioning components 9. The setting of the tensioning box 23 is convenient for the installation of the second screw 33. When the second screw 33 rotates, it directly drives the adjustment seat 36 and the driving arm 24 to slide in the tensioning box 23. The cooperation between the synchronous wheel 32 and the synchronous belt 31 facilitates the synchronous rotation of the second screws 33 in the two tensioning components 9.

[0032] For details, please refer to Figure 7 The inner wall of the tensioning box 23 in one of the tensioning components 9 is rotatably connected to a worm 35, and the outer wall of the screw 2 33 is fixedly connected to a worm wheel 34, and the worm wheel 34 and the worm 35 are meshed. The outer wall of one side of the support seat 5 is rotatably connected to a rotating disk 30, and one end of the transmission shaft of the rotating disk 30 is fixedly connected to the worm 35. When the rotating disk 30 rotates, the worm 35 is driven to rotate, and when the worm 35 rotates, the worm wheel 34 is driven to rotate. When the worm wheel 34 rotates, it directly drives the screw 2 33 to rotate, and then pulls the clamping seat 7 to clamp the rudder arm boring row.

[0033] For details, please refer to Figure 3-4 , one side inner wall of the two rectangular openings 11 is provided with an opening, and the inner walls of the two openings are slidably connected to a sliding seat 21, and the outer walls of one side of the two sliding seats 21 are fixedly connected to a plurality of teeth 22, which are conveniently installed by setting the opening on the rectangular opening 11. When the sliding seat 21 slides, the teeth 22 are driven to move synchronously. The outer wall of the bottom of the support seat 5 is provided with two symmetrically arranged rectangular grooves, and the inner walls of the two rectangular grooves are rotatably connected to rollers 18. The outer walls on both sides of the support seat 5 are fixedly connected The fixing plate 13, and the outer walls of the two fixing plates 13 are threaded with bolt rods 14, the top outer walls of the two bolt rods 14 are fixedly connected with hand wheels 16, and the bottom outer walls of the two bolt rods 14 are rotatably connected with support feet 15. The roller 18 provided at the bottom of the support seat 5 facilitates the movement of the auxiliary support seat 5, and then facilitates the transportation of the rudder arm boring row. The rotation of the handwheel 16 drives the bolt rod 14 to rotate. When the bolt rod 14 rotates, it cooperates with the support feet 15 to lift the support seat 5, thereby improving the stability of the support seat 5.

[0034] For details, please refer to Figure 1-2 The connecting component 2 includes an I-beam 3, and a plurality of equally spaced tooth grooves 4 are provided on one side outer wall of the I-beam 3. The specifications of the tooth grooves 4 match the specifications of the teeth 22. The I-beam 3 is inserted into the inner wall of the rectangular opening 11. The setting of the I-beam 3 facilitates the connection of the support seat 5. The tooth grooves 4 on the I-beam 3 facilitate the insertion of the teeth 22. When the teeth 22 are inserted into the tooth grooves 4, it is convenient to fix the I-beam 3 on the support seat 5.

[0035] For details, please refer to Figure 8 The limit assembly 12 includes a limit box 19 fixedly connected to the support frame 17, and the outer wall of the bottom of the limit box 19 is rotatably connected to the prism 20. The interior of the limit box 19 is provided with a mounting cavity 25, and the inner walls on both sides of the mounting cavity 25 are provided with rectangular openings. The inner walls of the two rectangular openings are slidably connected to drive seats 28, and one end of the two drive seats 28 is respectively fixedly connected to the two sliding seats 21. The inner walls on both sides of the mounting cavity 25 are rotatably connected to the same screw 29, and one end of the screw 29 is fixedly connected to the prism 20. The setting of the box 19 is convenient for installing the screw 29, the setting of the prism 20 is convenient for manually driving the screw 29 to rotate, and the setting of the drive seat 28 is convenient for cooperating with the sliding seat 21 to drive the teeth 22 to move. The outer wall of the screw 29 is screwed with a threaded sleeve 26, and the outer walls on both sides of the threaded sleeve 26 are rotatably connected to the connecting rod 27. One end of the two connecting rods 27 is respectively rotatably connected to the two drive seats 28, and the threaded sleeve 26 is driven to move when the screw 29 rotates. When the threaded sleeve 26 moves, it cooperates with the connecting rod 27 to drive the two drive seats 28 to move toward or away from each other.

[0036] Example 2 Based on Example 1, this example introduces a specific structure of the limit assembly 12 in a rudder arm boring and fixing device. Figure 9 As shown, the outer wall of the screw 29 is screwed with a trapezoidal block 38, and the outer walls on both sides of the trapezoidal block 38 are provided with a sliding groove, the inner walls of the two sliding grooves are slidably connected with a wedge plate 37, and one end of the two wedge plates 37 is fixedly connected to the two driving seats 28 respectively. The screw 29 is rotated to drive the trapezoidal block 38 to move. When the trapezoidal block 38 moves upward, the two wedge plates 37 are driven to move away from each other. When the trapezoidal block 38 moves downward, the two wedge plates 37 are driven to move toward each other.

[0037] Working principle: when in use, first lift the rudder arm boring row through the lifting mechanism, and then cooperate with the two connecting components 2 to connect the three supporting mechanisms 1 together, and then pass through each supporting mechanism 1 in turn. When the connecting component 2 is connected, the two I-beams 3 are passed through the rectangular opening 11 on the support seat 5. When the spacing between the three support seats 5 is determined, the I-beam 3 is fixed by the limit component 12, and then the rotating disk 30 is manually rotated to drive the worm 35 to rotate. When the worm 35 rotates, it directly drives the worm gear 34 to rotate. When the worm gear 34 rotates, it drives the screw 2 33 to rotate. When the screw 2 33 rotates, it directly drives the adjustment seat 36 and the driving arm 24 to rise and fall. When the driving arm 24 descends, it directly pulls the clamping seat 7 to cooperate with the arc seat 2 8 to press the rudder arm boring row onto the arc seat 1 6. The screw 2 33 in the two tensioning components 9 rotates synchronously through the cooperation between the synchronous wheel 32 and the synchronous belt 31, thereby ensuring the stability of the clamping seat 7. When the rudder arm boring row is moved to the specified position, the hand wheel 16 is turned to drive the bolt rod 14 to rotate, thereby facilitating the lifting of the support seat 5 so that the roller 18 is away from the ground, thereby ensuring the stability of the rudder arm boring row; when fixing the I-beam 3, the prism 20 is directly rotated, and when the prism 20 rotates, the screw 129 is directly driven to rotate, and when the screw 129 rotates, the threaded sleeve 26 is driven to move, and when the threaded sleeve 26 moves up, it cooperates with the connecting rod 27 to directly drive the two driving seats 28 to move apart, and when the driving seat 28 moves apart, it directly pushes the teeth 22 to insert into the tooth groove 4, thereby fixing the I-beam 3, or when the screw 129 rotates, it drives the trapezoidal block 38 to move up, and when the trapezoidal block 38 moves up, it cooperates with the wedge plate 37 to push the two driving seats 28 to move apart, so it is convenient to fix the I-beam 3.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A rudder arm boring and fixing device, comprising three supporting mechanisms (1), characterized in that: Two connecting components (2) are connected between the three supporting mechanisms (1), and the supporting mechanism (1) includes a supporting seat (5), and an arc groove is provided on the top outer wall of the supporting seat (5), and an arc seat 1 (6) is fixedly connected to the bottom inner wall of the arc groove. Two interconnected grooves are provided on the top outer wall of the supporting seat (5), and tensioning components (9) are installed on the inner walls of the two grooves. A pressing seat (7) with the same arc structure is installed between the two tensioning components (9), and an arc seat 2 (8) is fixedly connected to the bottom outer wall of the pressing seat (7). The outer wall on the opposite side of the supporting seat (5) is fixedly connected to the same supporting frame (17), and a limiting component (12) is installed on the top outer wall of the supporting frame (17). Two symmetrically arranged rectangular openings (11) are provided on the outer wall on one side of the supporting seat (5).

2. The rudder arm boring and fixing device according to claim 1, characterized in that: The tensioning assembly (9) includes a tensioning box (23) fixedly connected to the inner wall of the groove, and the inner wall of the tensioning box (23) is slidably connected to an adjustment seat (36), and the top outer wall of the adjustment seat (36) is fixedly connected to a driving arm (24), and the driving arm (24) is fixedly connected to the pressing seat (7).

3. The rudder arm boring and fixing device according to claim 2, characterized in that: The inner wall of the bottom of the tensioning box (23) is rotatably connected to the second screw (33), the adjustment seat (36) and the driving arm (24) are both screwed on the outer wall of the second screw (33), the outer wall of the bottom of the tensioning box (23) is rotatably connected to the synchronous wheel (32), and one end of the transmission shaft of the synchronous wheel (32) is fixedly connected to the second screw (33), and the same synchronous belt (31) is connected between the synchronous wheels (32) on the two tensioning assemblies (9).

4. The rudder arm boring and fixing device according to claim 3, characterized in that: The inner wall of the tensioning box (23) in one of the tensioning assemblies (9) is rotatably connected to a worm (35), the outer wall of the second screw (33) is fixedly connected to a worm wheel (34), and the worm wheel (34) and the worm (35) are meshed with each other, and the outer wall of one side of the support seat (5) is rotatably connected to a rotating disk (30), and one end of the transmission shaft of the rotating disk (30) is fixedly connected to the worm (35).

5. The rudder arm boring and fixing device according to claim 4, characterized in that: An opening is formed on one inner wall of each of the two rectangular openings (11), and the inner walls of the two openings are slidably connected to a sliding seat (21), and a plurality of teeth (22) are fixedly connected to one outer wall of each of the two sliding seats (21).

6. The rudder arm boring and fixing device according to claim 5, characterized in that: The bottom outer wall of the support seat (5) is provided with two symmetrically arranged rectangular grooves, and the inner walls of the two rectangular grooves are rotatably connected to rollers (18), the outer walls of both sides of the support seat (5) are fixedly connected to fixing plates (13), and the outer walls of the two fixing plates (13) are threaded with bolt rods (14), the top outer walls of the two bolt rods (14) are fixedly connected to hand wheels (16), and the bottom outer walls of the two bolt rods (14) are rotatably connected to support feet (15).

7. The rudder arm boring and fixing device according to claim 6, characterized in that: The connecting assembly (2) comprises an I-beam (3), and a plurality of tooth grooves (4) distributed at equal distances are formed on an outer wall of one side of the I-beam (3), the specifications of the tooth grooves (4) match the specifications of the teeth (22), and the I-beam (3) is inserted into the inner wall of the rectangular opening (11).

8. The rudder arm boring and fixing device according to claim 7, characterized in that: The limit assembly (12) includes a limit box (19) fixedly connected to the support frame (17), and the outer wall of the bottom of the limit box (19) is rotatably connected to a prism (20), an installation cavity (25) is provided inside the limit box (19), and rectangular openings are provided on the inner walls on both sides of the installation cavity (25), the inner walls of the two rectangular openings are slidably connected to drive seats (28), and one end of the two drive seats (28) is respectively fixedly connected to the two sliding seats (21), the inner walls on both sides of the installation cavity (25) are rotatably connected to the same screw rod (29), and one end of the screw rod (29) is fixedly connected to the prism (20).

9. The rudder arm boring and fixing device according to claim 8, characterized in that: The outer wall of the screw rod (29) is screwed with a threaded sleeve (26), and the outer walls on both sides of the threaded sleeve (26) are rotatably connected to connecting rods (27), and one end of the two connecting rods (27) is rotatably connected to the two driving seats (28).

10. The rudder arm boring and fixing device according to claim 8, characterized in that: The outer wall of the screw rod (29) is screwed with a trapezoidal block (38), and the outer walls on both sides of the trapezoidal block (38) are provided with a sliding groove, and the inner walls of the two sliding grooves are slidably connected with a wedge plate (37), and one end of the two wedge plates (37) is fixedly connected to the two driving seats (28) respectively.

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