Rudder stock nut mounting device and mounting method thereof

Abstract

The invention provides a rudderstock nut mounting device and a mounting method thereof. The rudderstock nut mounting device comprises a nut bearing disc, a driven gear disc, a positioning bolt, a driving motor bearing disc and a telescopic device. The driven gear disc is rotatably connected to the nut bearing disc, adjusting jackscrew screws are arranged on the periphery of the driven gear disc, and the adjusting jackscrew screws abut against rudderstock nuts from the periphery; the driving motor bearing disc drives a driving gear which is rotatably mounted through a driving motor, and the driving gear is meshed with the driven gear disc; the telescopic device coaxially stretches out and draws back along the positioning bolt through a telescopic rod, and the bottom of the telescopic rod is in threaded connection with a locking nut so that the locking nut can drag the nut bearing disc. Through gear meshing, the driving motor drives the device to install the rudderstock nut on the rudderstock, and the technical problem that an automatic rudderstock installation device is lacked in the prior art is solved.

Description

Technical Field:

[0001] The present invention relates to the field of assembly tooling design, and more particularly to a rudder stock nut installation device and an installation method thereof. Background Art:

[0002] Currently, in the shipbuilding industry, the installation of heavy-duty rudder stock nuts that tightly press the rudder blade and the tail shaft propeller has long been affected by factors such as narrow installation space, large self-weight of the nut, and inconvenient operation in the working space. For example, for the currently hanging type rudder blade, the installation of the rudder stock nut mainly relies on a hoist to pull it below the rudder stock. Workers manually adjust the position of the nut to align the nut with the screw rod, and then use a hex wrench in cooperation with the installation holes on the side of the nut to manually screw the nut in. The following situations occur during the installation of the nut: 1. When the nut is initially screwed in, due to the self-weight of the nut and other reasons, mechanical damage occurs between the threads, resulting in tearing and damage to the metal surface; 2. When screwing in, the pulling force direction and magnitude are uneven, local pressure is too large, and it is difficult to detect the problem of nut jamming in a timely manner; 3. The nut sling is soft-fixed, with poor centering accuracy, and the threads are easily damaged when initially screwed in; 4. Multiple people work at high altitude simultaneously, the working space is narrow, and there are safety hazards; 5. Multiple people operate, with inconsistent actions, and the nut is stressed unevenly.

[0003] There is an urgent need for a rudder stock nut installation device and an installation method thereof, which helps to solve the technical problem of the lack of an automated rudder stock installation device in the prior art. Summary of the Invention:

[0004] In one embodiment, the present invention provides a rudder stock nut installation device, which drives a motor to drive the device to install the rudder stock nut onto the rudder stock through gear meshing, helping to solve the technical problem of the lack of an automated rudder stock installation device in the prior art.

[0005] The rudder stock nut installation device includes a nut carrier plate, a driven gear plate, positioning bolts, a drive motor carrier plate, and a telescopic device;

[0006] The driven gear plate is rotatably connected to the nut carrier plate, and adjusting jackscrew bolts are arranged around the circumference of the driven gear plate, and the adjusting jackscrew bolts abut against the rudder stock nut from all around;

[0007] The positioning bolts are used for coaxially screwing into the bolt holes below the rudder stock;

[0008] The drive motor carrier plate is rotatably installed with a driving gear driven by a drive motor, and the driving gear meshes with the driven gear plate;

[0009] One end of the telescopic device is connected to the end of the positioning bolt, and it can telescopically move along the positioning bolt coaxially through a telescopic rod. A locking nut is screwed at the bottom of the telescopic rod so that the locking nut supports the nut bearing plate.

[0010] In one embodiment, the rudder stock nut installation device further includes a push support frame;

[0011] An installation groove is provided at the top of the push support frame, a protrusion matching the installation groove is provided at the bottom of the nut bearing plate, and the telescopic rod penetrates through the driven gear disc, the nut bearing plate, and the push support frame.

[0012] In one embodiment, the telescopic device is a hydraulic cylinder.

[0013] In one embodiment, a chuck is provided at the connection between the positioning bolt and the telescopic device, and the chuck abuts against the end face of the lower end of the rudder stock.

[0014] In one embodiment, the present invention also provides an installation method based on the rudder stock nut installation device. Based on the described rudder stock nut installation device, the installation method includes:

[0015] Screw the positioning bolt onto the bottom of the rudder stock and connect the telescopic device to the bottom of the positioning bolt;

[0016] Install the rudder stock nut, the nut bearing plate, the driven gear disc, and the driving motor bearing plate on the telescopic rod in sequence and lock them with the locking nut;

[0017] Place the rudder stock nut on the nut bearing plate, adjust the position of the rudder stock nut through the adjusting set screw and fix it;

[0018] The telescopic rod of the telescopic rod device is telescoped to a predetermined height;

[0019] Start the driving motor to rotate the driving gear, and then the driven gear disc rotates, driving the rudder stock nut to rotate relative to the rudder stock to achieve tightening.

[0020] In one embodiment, the rudder stock nut installation device further includes a push support frame, an installation groove is provided at its top, a protrusion matching the installation groove is provided at the bottom of the nut bearing plate, and the telescopic rod penetrates through the driven gear disc, the nut bearing plate, and the push support frame;

[0021] The telescopic device is a hydraulic cylinder;

[0022] A chuck is provided at the connection between the positioning bolt and the telescopic device, and the chuck abuts against the end face of the lower end of the rudder stock

[0023] The steps of sequentially installing the rudder stock nut, the nut carrier plate, the driven gear plate, and the drive motor carrier plate through the telescopic rod and locking with the lock nut further include:

[0024] Before the step of locking with the lock nut, the push support frame is connected through.

[0025] In one embodiment, after the step of screwing the positioning bolt to the bottom of the rudder stock and connecting the telescopic device to the bottom of the positioning bolt, the method further includes:

[0026] Press the chuck against the lower end face of the positioning bolt.

[0027] In one embodiment, before the step of extending and retracting the telescopic rod of the telescopic rod device to a predetermined height, the method further includes:

[0028] Connect the hydraulic cylinder to the hydraulic oil pipe.

[0029] In one embodiment, after the step of starting the drive motor to rotate the driving gear, and then the driven gear plate rotates, driving the rudder stock nut to rotate relative to the rudder stock to achieve tightening, the method further includes:

[0030] Adjust the height of the rudder stock nut. When the rudder stock nut abuts against the rudder stock, start the reverse rotation of the drive motor carrier plate. The driving gear on the drive motor drives the driven gear to rotate, and rotate the rudder stock nut for thread alignment.

[0031] In one embodiment, after the step of starting the drive motor to rotate the driving gear, and then the driven gear plate rotates, driving the rudder stock nut to rotate relative to the rudder stock to achieve tightening, the method further includes:

[0032] Open the pressure relief valve of the hydraulic cylinder, drain the hydraulic oil back into the oil cylinder, remove the installation tooling and the hanging hoist, cut off the ear plates welded during the hoisting of the rudder blade, and grind and touch up the paint on the welded parts. Description of the drawings:

[0033] Figure 1 It is a schematic structural diagram of a rudder stock nut installation device in an embodiment of the present invention;

[0034] Figure 2 It is a schematic diagram of the rudder stock nut positioning structure in another embodiment of the present invention;

[0035] Figure 3 It is a schematic diagram of the assembly structure of the push support frame in another embodiment of the present invention;

[0036] Figure 4 It is a schematic diagram of the structure of the telescopic device in another embodiment of the present invention.

[0037] Reference numerals:

[0038] Nut carrier plate 1

[0039] Driven gear disc 2

[0040] Adjusting jackscrew 3

[0041] Positioning bolt 4

[0042] Bolt hole 41

[0043] Drive motor carrier plate 5

[0044] Drive motor 51

[0045] Driving gear 52

[0046] Telescopic device 6

[0047] Telescopic rod 61

[0048] Locking nut 62

[0049] Chuck 63

[0050] Pushing support frame 7

[0051] Rudder rod nut 10 Specific embodiments:

[0052] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0053] Reference is made herein to the various solutions and features of the present application with reference to the accompanying drawings.

[0054] These and other features of the present application will become apparent from the following description of the preferred forms of the embodiments given as non - limiting examples with reference to the accompanying drawings.

[0055] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art can surely implement many other equivalent forms of the present application, which have the features as described in the claims and thus are all within the protection scope defined thereby.

[0056] When combined with the accompanying drawings, the above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description.

[0057] Specific embodiments of the present application will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments claimed are merely examples of the present application and can be implemented in various ways. Well-known and / or repetitive functions and structures are not described in detail to clarify the true intent based on the user's historical operations and to avoid obscuring the present application with unnecessary or redundant details. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but are merely a basis and representative basis for the claims to teach those skilled in the art to use the present application in substantially any suitable detailed structure in a variety of ways.

[0058] This specification may use the phrase "in one embodiment", "in another embodiment", "in yet another embodiment", or "in other embodiments", each of which may refer to one or more of the same or different embodiments according to the present application.

[0059] The present invention relates to a tooling for installing a rudder stock nut, which is used for installing large nuts such as the rudder stock nut. The technical problems to be solved include the difficulties in installing the rudder stock nut, the poor centering accuracy before the nut is screwed in, the uneven force during screwing in that damages the thread teeth, and the safety risks. The purpose is to improve the installation process of the rudder stock nut, reduce the risks during the installation process, and improve the installation quality. This technology belongs to the field of shipbuilding, especially the field of rudder system installation.

[0060] Figure 1 It is a schematic structural diagram of a rudder stock nut installation device in an embodiment of the present invention; Figure 2 It is a schematic diagram of the rudder stock nut positioning structure in another embodiment of the present invention; Figure 3 It is a schematic assembly structure diagram of the pushing support frame in another embodiment of the present invention; Figure 4 It is a schematic diagram of the telescopic device structure in another embodiment of the present invention.

[0061] As Figures 1 to 4 shown, in one embodiment, the present invention provides a rudder stock nut installation device, and the rudder stock nut installation device includes a nut carrier plate 1, a driven gear plate 2, positioning bolts 4, a drive motor carrier plate 5, and a telescopic device 6;

[0062] The driven gear plate 2 is rotatably connected to the nut carrier plate 1, and adjusting jackscrew 3 is arranged around the driven gear plate 2, and the adjusting jackscrew 3 abuts against the rudder stock nut 10 from all around;

[0063] The positioning bolt 4 is used for coaxially screwing into the bolt hole 41 below the rudder stock;

[0064] The drive motor carrier plate 5 is rotatably installed by driving a driving gear 52 through a drive motor 51, and the driving gear 52 meshes with the driven gear plate 2;

[0065] One end of the telescopic device 6 is connected to the end of the positioning bolt 4, and it can telescopically move coaxially along the positioning bolt 4 through the telescopic rod 61. A locking nut 62 is screwed at the bottom of the telescopic rod 61 to make the locking nut 62 hold the nut carrier plate 1.

[0066] In this embodiment, a specific structure of the rudder stock nut installation device is provided. After the driving motor 51 drives the driving gear 52 to rotate, the driven gear disk 2 is driven to rotate, and the nut carrier plate 1 will gradually rise, dragging the rudder stock nut 10 to rise. The positioning bolt 4 is used to align the installation hole for the servo, and the telescopic device 6 itself can be telescoped, and the telescopic length is locked by the locking nut 62.

[0067] In one embodiment, the rudder stock nut installation device further includes a pushing support frame 7;

[0068] An installation groove 71 is provided at the top of the pushing support frame 7, a protrusion 11 matching the installation groove 71 is provided at the bottom of the nut carrier plate 1, and the telescopic rod 61 penetrates through the driven gear disk 2, the nut carrier plate 1, and the pushing support frame 7.

[0069] In this embodiment, the pushing support frame 7 is provided to hold the position between the nut carrier plate 1 and the rudder stock nut 10.

[0070] In one embodiment, the telescopic device 6 is a hydraulic cylinder.

[0071] In this embodiment, a specific implementation manner of the telescopic device 6 is provided.

[0072] In one embodiment, a chuck 63 is provided at the connection between the positioning bolt 4 and the telescopic device 6, and the chuck 63 abuts against the end face of the lower end of the rudder stock.

[0073] In one embodiment, the present invention also provides an installation method based on the rudder stock nut installation device. Based on the described rudder stock nut installation device, the installation method includes:

[0074] Screw the positioning bolt 4 onto the bottom of the rudder stock and connect the telescopic device 6 to the bottom of the positioning bolt 4;

[0075] Install the rudder stock nut, the nut carrier plate 1, the driven gear disk 2, and the driving motor carrier plate 5 on the telescopic rod 61 in sequence and lock them with the locking nut 62;

[0076] Place the rudder stock nut 10 on the nut carrier plate 1, and adjust the position of the rudder stock nut 10 and fix it by adjusting the jackscrew 3;

[0077] The telescopic rod 61 of the telescopic rod device 6 is telescoped to a predetermined height;

[0078] The drive motor 51 is started to rotate the driving gear 52, and then the driven gear disc 2 rotates, driving the rudder stock nut 10 to rotate relative to the rudder stock to achieve tightening.

[0079] In one embodiment, the rudder stock nut 2 installation device further includes a push support frame, the top of which is provided with an installation groove, and the bottom of the nut carrier disc is provided with a protrusion that matches the installation groove. The telescopic rod penetrates through the driven gear disc, the nut carrier disc, and the push support frame.

[0080] The telescopic device 6 is a hydraulic cylinder.

[0081] A chuck 63 is provided at the connection between the positioning bolt 4 and the telescopic device 6, and the chuck 63 abuts against the lower end face of the rudder stock.

[0082] The steps of sequentially installing the rudder stock nut 10, the nut carrier disc 1, the driven gear disc 2, and the drive motor carrier disc 5 on the telescopic rod 61 and locking them with a locking nut 62 further include:

[0083] Before the step of locking with the locking nut 62, penetrate and connect the push support frame 7.

[0084] In one embodiment, after the step of screwing the positioning bolt onto the bottom of the rudder stock and connecting the telescopic device to the bottom of the positioning bolt, the method further includes:

[0085] Press the chuck 63 against the lower end face of the positioning bolt 4.

[0086] In one embodiment, before the step of extending and retracting the telescopic rod of the telescopic rod device to a predetermined height, the method further includes:

[0087] Connect the hydraulic cylinder to a hydraulic oil pipe.

[0088] In one embodiment, after the step of starting the drive motor to rotate the driving gear, and then the driven gear disc rotates, driving the rudder stock nut to rotate relative to the rudder stock to achieve tightening, the method further includes:

[0089] Adjust the height of the rudder stock nut 10. When the rudder stock nut 10 abuts against the rudder stock, start the drive motor carrier disc 5 to rotate in the reverse direction. The driving gear 52 on the drive motor drives the driven gear to rotate, and rotate the rudder stock nut 10 to perform thread centering.

[0090] In one embodiment, after the step of starting the drive motor to rotate the driving gear 52, and then the driven gear disc rotates, driving the rudder stock nut 10 to rotate relative to the rudder stock to achieve tightening, the method further includes:

[0091] Open the pressure relief valve of the hydraulic cylinder, drain the hydraulic oil back into the cylinder, remove the installation tooling and the hanging hoist, cut off the ear plates welded during the hoisting of the rudder blade, and grind and touch up the paint on the welded parts.

[0092] Based on the above description, the overall process is as follows:

[0093] Combined with the on-site construction situation, first weld the ear plates at the appropriate positions on the rudder plate for subsequent hoisting of the rudder blade and the rudder stock, nuts and nut installation tooling;

[0094] Further, install the hydraulic cylinder at the lower part of the rudder stock, screw the positioning bolts into the bolt holes below the rudder stock until the disc above the hydraulic cylinder is in close contact with the end face of the rudder stock nut;

[0095] Further, assemble the push support frame, nut carrier plate, driven gear and carrier plate drive motor. The push support frame cooperates with the card slots on the nut carrier plate, and the drive motor is fixed to the side of the nut carrier plate by bolts;

[0096] Further, use the hoist to place the rudder stock nut on the carrier plate, and use the adjusting screw to adjust the concentricity between the nut and the carrier plate and clamp the nut;

[0097] Further, the hoist sets the carrier plate and the push support frame into the hydraulic cylinder from below and raises them to the installation height. A locking nut is installed below the hydraulic cylinder, and the hydraulic cylinder is connected to the hydraulic oil pipe;

[0098] Further, the drive motor pumps the hydraulic oil into the hydraulic cylinder to make the hydraulic cylinder drive the bearing tooling and the nut to rise slowly;

[0099] Further, adjust the height of the nut. When the nut abuts against the rudder stock, start the carrier plate drive motor to rotate in the reverse direction. The driving gear on the drive motor drives the driven gear to rotate, and the nut is rotated for thread alignment;

[0100] Further, start the drive motor to rotate forward for the tightening operation;

[0101] Further, after the nut installation is completed, open the pressure relief valve of the hydraulic cylinder, drain the hydraulic oil back into the cylinder, remove the installation tooling and the hanging hoist, cut off the ear plates welded during the hoisting of the rudder blade, and grind and touch up the paint on the welded parts.

[0102] Beneficial effects:

[0103] Compared with the prior art, the present invention has the following advantages: 1. Automatic centering of the thread. A flexible centering structure is adopted to automatically center and align the position of the thread pair, avoiding the collision damage caused when the threads come into contact. 2. Constant-weight lifting. During the process of screwing in the nut, the lifting system always provides a thrust equal to its own weight, avoiding the frictional torque caused by the self-weight of the nut. 3. Adjustable screwing-in speed. According to the actual working conditions, the rotation speed of the driving motor is controlled, thereby controlling the screwing-in speed of the nut. 4. Simple assembly. Lightweight design, suitable for high-altitude operation during disassembly and assembly.

[0104] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be regarded as falling within the protection scope of the present invention.

Claims

1. A rudder stock nut mounting device, characterized in that: The rudder stock nut mounting device comprises: A nut bearing plate (1); A driven gear plate (2) is rotatably connected to the nut bearing plate (1), and an adjusting screw (3) is arranged around the driven gear plate (2), and the adjusting screw (3) supports the rudder stock nut (10) from all sides; a positioning bolt (4) for being coaxially threadedly connected to a bolt hole (41) below the rudder stock; A driving motor carrier plate (5) which drives a rotatably mounted driving gear (52) through a driving motor (51), wherein the driving gear (52) meshes with the driven gear plate (2); A telescopic device (6) has one end connected to the end of the positioning bolt (4) and is coaxially telescopic along the positioning bolt (4) via a telescopic rod (61). The bottom of the telescopic rod (61) is threaded with a locking nut (62) so that the locking nut (62) can drag the nut carrier plate (1).

2. The rudder stock nut mounting device according to claim 1, characterized in that: The rudder stock nut mounting device also includes: A push-up support frame (7) is provided with a mounting groove (71) at the top, and a protrusion (11) matching the mounting groove (71) is provided at the bottom of the nut bearing plate (1), and the telescopic rod (61) passes through the driven gear plate (2), the nut bearing plate (1), and the push-up support frame (7).

3. The rudder stock nut mounting device according to claim 2, characterized in that: The telescopic device (6) is a hydraulic cylinder.

4. The rudder stock nut mounting device according to claim 3, characterized in that: A chuck (63) is provided at the connection between the positioning bolt (4) and the telescopic device (6), and the chuck (63) abuts against the lower end surface of the rudder stock.

5. An installation method based on a rudder stock nut installation device, characterized in that: Based on the rudder stock nut installation device according to any one of claims 1 to 4, the installation method comprises: The positioning bolt (4) is screwed and installed on the bottom of the rudder stock, and the telescopic device (6) is connected to the bottom of the positioning bolt (4); The rudder stock nut, the nut bearing plate (1), the driven gear plate (2) and the drive motor bearing plate (5) are sequentially installed and connected to the telescopic rod (61), and are locked by the locking nut (62); Placing the rudder stock nut (10) on the nut bearing plate (1), and adjusting the position of the rudder stock nut (10) by means of the adjusting screw (3) and fixing it; The telescopic rod (61) of the telescopic rod device (6) is telescoped to a predetermined height; The driving motor (51) is started to rotate the driving gear (52), thereby rotating the driven gear plate (2), and driving the rudder stock nut (10) to rotate relative to the rudder stock to achieve tightening.

6. The installation method based on the rudder stock nut installation device according to claim 5, characterized in that: The rudder stock nut (2) installation device also includes a push-up support frame, the top of which is provided with a mounting groove, the bottom of the nut bearing plate is provided with a protrusion matching the mounting groove, and the telescopic rod passes through the driven gear plate and the nut bearing plate, as well as the push-up support frame; The telescopic device (6) is a hydraulic cylinder; A chuck (63) is provided at the connection between the positioning bolt (4) and the telescopic device (6), and the chuck (63) abuts against the end surface of the lower end of the rudder stock; The step of sequentially installing the rudder stock nut (10), the nut bearing plate (1), the driven gear plate (2) and the drive motor bearing plate (5) on the telescopic rod (61), and locking the rudder stock nut (10) with the locking nut (62) further comprises: Before the step of locking with the locking nut (62), the push-up support frame (7) is connected through it.

7. The installation method based on the rudder stock nut installation device according to claim 6 is characterized in that: After the step of threading the positioning bolt to the bottom of the rudder stock and connecting the telescopic device to the bottom of the positioning bolt, the method further comprises: The chuck (63) is pressed against the lower end surface of the positioning bolt (4).

8. The installation method based on the rudder stock nut installation device according to claim 7 is characterized in that: Before the step of extending the telescopic rod of the telescopic rod device to a predetermined height, the method further comprises: The hydraulic cylinder is connected to a hydraulic oil pipe.

9. The installation method based on the rudder stock nut installation device according to claim 8, characterized in that: After the driving motor is started to rotate the driving gear, and then the driven gear plate is rotated, and the rudder stock nut is supported to rotate relative to the rudder stock to realize the tightening step, the method further includes: The height of the rudder stock nut (10) is adjusted. When the rudder stock nut (10) contacts the rudder stock, the driving motor carrier plate (5) is started to rotate in the opposite direction. The driving gear (52) on the driving motor drives the driven gear to rotate, and the rudder stock nut (10) is rotated to perform thread centering.

10. The installation method based on the rudder stock nut installation device according to claim 9, characterized in that: After the driving motor is started to rotate the driving gear (52), thereby rotating the driven gear plate, and supporting the rudder stock nut (10) to rotate relative to the rudder stock to achieve the tightening step, the method further comprises: Open the hydraulic cylinder pressure relief valve to drain the hydraulic oil back into the cylinder, remove the installation tooling and hanging hoist, cut off the ear plates welded when hoisting the rudder blades, and grind and repaint the welded parts.

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