Tiller and rudderstock connecting device with keys and working method

Abstract

The invention relates to a tiller connecting device with a key and a working method.The tiller connecting device comprises a connecting key, a tiller and a rudderstock and further comprises a positioning plate horizontally and fixedly arranged above the tiller, and an avoiding gap is formed between the tiller and the positioning plate; the jack is arranged in the avoiding gap, the upper end and the lower end of the jack abut against the positioning plate and the tiller respectively, and the jack is used for pressing the tiller into the rudderstock; the tiller is guided and positioned through the preassembled key, the goodness of fit between the upper opening and the lower opening of the key groove of the tiller and the upper opening and the lower opening of the key groove of the rudderstock is improved, it is ensured that the connecting key can be fully pressed into the key groove, firm connection between the tiller and the rudderstock is ensured, and torsional moment is efficiently transmitted.

Description

Technical Field

[0001] The invention relates to the technical field of assembling a tiller and rudder stock of a ship, in particular to a tiller and rudder stock connecting device with a key and a working method thereof. Background Art

[0002] Conventional tiller and rudder stock assembly is done by brush fitting or key connection. The assembly requirements between ship mechanical parts are very high, and the tolerance is generally During the key connection and installation process of the tiller handle and the rudder stock, it is necessary to ensure that the tiller handle keyway is completely consistent with the upper and lower openings of the rudder stock keyway when the tiller handle is seated, and the misalignment of the upper and lower openings on one side does not exceed half of the total deviation value, that is, 0.02mm. If this process is not properly controlled, the keyway and the upper and lower openings of the rudder stock keyway will be misaligned. The consequence of the misalignment is that the key installation is obstructed, resulting in the key failing to reach the press-fitting amount, and any deviation will cause rework, or cause mechanical damage to the mating surface of the key and the keyway, resulting in reduced matching accuracy and reduced transmission efficiency, thus causing a series of problems such as time waste. Summary of the invention

[0003] To this end, the technical problem to be solved by the present invention is to overcome the problem in the prior art that during the assembly of the tiller, there is a deviation between the upper and lower openings of the keyway of the tiller and the keyway of the rudder stock, which leads to obstruction of key installation and insufficient pressing amount. Further, a tiller connecting device with a key and a working method are provided, which are used to realize the key connection between the tiller and the tiller, and the tiller is positioned and guided by the pre-installed key. The degree of fit between the keyway of the tiller and the upper and lower openings of the keyway of the rudder stock is also improved, ensuring that the connecting key can be fully pressed into the keyway, ensuring that the tiller and the rudder stock are firmly connected, and efficiently transmitting the torsional torque.

[0004] In order to solve the above technical problems, the present invention provides a tiller connecting device with a key, which comprises a connecting key, a tiller and a tiller bar, and also comprises:

[0005] A positioning plate is horizontally fixed above the tiller handle, and an avoidance gap is provided between the tiller handle and the positioning plate;

[0006] A jack is arranged in the avoidance gap, and its upper and lower ends respectively support the positioning plate and the tiller handle, so as to press the tiller handle into the rudder stock.

[0007] In one embodiment of the present invention, it also includes a full-thread screw and two first nuts threadedly connected to the full-thread screw, the full-thread screw is vertically threadedly connected to the rudder bar and passes through the positioning plate, and the two first nuts respectively abut against the upper and lower sides of the positioning plate.

[0008] In one embodiment of the present invention, a plurality of the jacks are symmetrically arranged about the rudder stock.

[0009] In one embodiment of the present invention, it also includes an adjusting screw and two second nuts threadedly connected to the adjusting screw, the upper end of the adjusting screw passes through the fixing plate, and the two second nut adjusting screws respectively abut the upper and lower sides of the fixing plate, the tiller handle is provided with a limiting hole corresponding to the adjusting screw, and the lower end of the adjusting screw is inserted into the limiting hole and threadedly connected.

[0010] In one embodiment of the present invention, a plurality of adjusting screw rods are symmetrically arranged about the rudder bar.

[0011] In order to solve the above problems, the present invention also provides a working method, which is realized by the cooperation of a tiller with a key, a tiller connecting device, a pre-installed key, and a dial indicator. The pre-installed key is used to guide and position the tiller so that the clearance around the keyway of the tiller and the upper and lower openings of the keyway of the rudder stock meets the requirements. The working method includes a pre-treatment step, a pre-installation step, and a press-fitting step, wherein:

[0012] The pre-processing stage is used to install the pre-installed key and ensure that the positioning plate and the tiller are parallel;

[0013] The assembly process is used to place the tiller on the conical surface of the rudder stock, and before the tiller is completely placed on the conical surface, the pre-installed key is used for positioning and guiding, so that the misalignment of the keyway of the tiller and the keyway of the rudder stock is less than 0.02mm:

[0014] The press-fitting link is used to press the connecting key into the keyway of the tiller handle and the keyway of the rudder stock.

[0015] In one embodiment of the present invention, the preprocessing step includes the following steps:

[0016] a1: vertically insert the lower end of the pre-installed key into the keyway of the rudder stock, with the upper end of the pre-installed key exposed;

[0017] a2: Use multiple adjusting screws to fix the positioning plate and the tiller to ensure that the tiller is parallel to the positioning plate.

[0018] In one embodiment of the present invention, the pre-installation step specifically includes the following steps:

[0019] b1: Hoist the tiller and the positioning plate above the rudder stock;

[0020] b2: Adjust the tiller so that its keyway is aligned with the keyway of the rudder stock;

[0021] b3: The tiller handle and the positioning plate fall down by their own weight, and the upper end of the pre-assembled part passes through the keyway of the tiller handle to perform preliminary positioning and guidance on the tiller handle;

[0022] b4: During the falling process of the tiller, adjust the keyway of the tiller to the center of the keyway of the rudder stock so that the matching clearance between the pre-installed key and the keyway is between 0 and 0.04 mm, until the tiller is completely located on the conical surface of the rudder stock;

[0023] b5: The positioning plate and the rudder stock are fixedly connected by a full-thread screw;

[0024] b6: Remove the adjusting screw;

[0025] b7: Install the dial indicator;

[0026] b8: The jack is installed in place;

[0027] b9: Use the jack to press the tiller handle down into the rudder stock until it reaches the preset pressing amount.

[0028] In one embodiment of the present invention, the step b4 further comprises the following steps:

[0029] Step b41: During the falling process of the tiller, use a 0.02mm feeler gauge to measure and monitor the gap between the pre-installed key and the keyway, as well as the gaps around the keyway of the tiller and the upper and lower openings of the keyway of the rudder stock. If the gaps do not meet the requirements, execute step b42;

[0030] Step b42: For the side with excessive clearance, fine-tune the clearance in the horizontal direction on one side by using a jack, and compare the clearance with the dial indicators on both sides until the clearance meets the requirement;

[0031] In one embodiment of the present invention, the press-fitting process comprises the following steps:

[0032] C1: Pull out the pre-installed key;

[0033] C2: Check the alignment of the upper and lower openings. If the gaps have been adjusted to meet the requirements, proceed to step C3;

[0034] C3: Freeze the connection key with dry ice, and press the jacks on both sides simultaneously to press the shrunken connection key into the keyway of the tiller handle and the keyway of the rudder stock until the connection key is pressed into place.

[0035] The above technical solution of the present invention has the following advantages compared with the prior art:

[0036] The tiller handle with key and the tiller handle connecting device and working method described in the present invention arrange a jack between the positioning plate and the tiller handle to press the tiller handle into the rudder shaft and press the connecting key into the key slot, thereby ensuring the pressing amount of the tiller handle and the connecting key; the positioning plate is arranged horizontally, and the tiller handle is fixedly connected to the positioning plate, so that the tiller handle and the positioning plate are completely parallel, thereby ensuring that the tiller handle is always perpendicular to the connecting key during the process of descending by its own gravity; the tiller handle is guided and positioned by the pre-installed key, thereby ensuring that after the tiller handle falls on the conical surface of the rudder shaft, the key slot of the tiller handle can match the key slot of the rudder shaft, thereby facilitating the smooth installation of the connecting key. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0038] Figure 1 The present invention is a schematic structural diagram of a tiller arm connecting device with a key but excluding an adjusting screw rod.

[0039] Figure 2 It is a structural schematic diagram of a tiller handle connecting device with a key, which does not include a jack and a connecting key of the present invention;

[0040] Figure 3 for Figure 2 A schematic diagram of the structure of the adjusting screw rod of the tiller arm connecting device with a key;

[0041] Figure 4 for Figure 1 A schematic diagram of the structure of a full-thread screw with a keyed tiller and tiller connecting device shown;

[0042] Figure 5 for Figure 1 A schematic diagram of the structure of a top view of a positioning plate of a tiller arm connecting device with a key tiller arm shown; Figure 6 for Figure 1 A schematic structural diagram of a connecting key of a tiller connecting device with a key; Explanation of the reference numerals in the specification: 1. rudder stock; 2. tiller handle; 3. positioning plate; 31. first through hole; 32. second through hole; 4. jack; 5. full-thread screw; 51. first nut; 6. adjusting screw; 61. second nut; 7. connecting key; 8. hydraulic pump; 81. distribution controller; 9. dial indicator. DETAILED DESCRIPTION

[0043] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0044] Embodiment 1

[0045] Reference Figure 1 As shown, in one embodiment of the present invention, a tiller handle connecting device with a key is disclosed, which includes a connecting key 7, a tiller handle 2 and a rudder stock 1. The tiller handle 2 and the rudder stock 1 are both provided with a key slot. The connecting key 7 is used to press into the key slot to realize the key connection between the tiller handle 2 and the rudder stock 1. The connecting device also includes:

[0046] A positioning plate 3 is horizontally fixed above the tiller handle 2, and an avoidance gap is provided between the tiller handle 2 and the positioning plate 3;

[0047] Jacks 4, two jacks 4 are arranged in the avoidance gap, the upper and lower ends of the jacks 4 respectively support the positioning plate 3 and the tiller handle 2, and the output end of the jacks 4 extends out to press the tiller handle 2 into the rudder bar 1.

[0048] In one embodiment of the present invention, it also includes a full-thread screw 5 and two first nuts 51 threadedly connected to the full-thread screw 5. The full-thread screw 5 is vertically arranged and the lower end is threadedly connected to the rudder bar 1, and the upper end passes through the first through hole 31 of the positioning plate 3. The two first nuts 51 respectively abut the upper and lower sides of the positioning plate 3 to transfer the gravity of the positioning plate 3 to the rudder bar 1. The positioning plate 3 is used to increase the reverse thrust for the jack 4 to ensure that the jack 4 can press down the tiller handle 2.

[0049] In one embodiment of the present invention, referring to Figure 1 As shown, the two jacks 4 are symmetrically arranged about the rudder bar 1, and the two jacks 4 are pressurized at the same time to ensure that both sides of the rudder handle 2 descend at the same time.

[0050] In one embodiment of the present invention, referring to Figure 1 As shown, it also includes an adjusting screw rod 6 and two second nuts 61 threadedly connected to the adjusting screw rod 6. The adjusting screw rod 6 is vertically arranged and the upper end passes through the second through hole 32 of the fixing plate, and the two second nuts 61 adjust the screw rod 6 respectively abut the upper and lower sides of the fixing plate. The tiller handle 2 is provided with a limiting hole corresponding to the adjusting screw rod 6. The lower end of the adjusting screw rod 6 is inserted into the limiting hole and threadedly connected. Before the tiller handle 2 descends by its own gravity, the positioning plate 3 and the tiller handle 2 are fixedly connected by the adjusting screw rod 6 to ensure that the two are completely parallel and to prevent the tiller handle 2 from shifting sideways.

[0051] In one embodiment of the present invention, referring to Figure 1 As shown, the four adjusting screw rods 6 are symmetrically arranged with respect to the rudder bar 1 , and correspondingly, the rudder handle 2 is provided with four second through holes 32 , and the lower ends of the four adjusting screw rods 6 are respectively inserted into the four second through holes 32 .

[0052] Embodiment 2

[0053] In order to solve the above problems, the present invention further provides a working method, which is implemented by the cooperation of a tiller with key, a tiller connecting device, a pre-installed key, and a dial indicator 9, wherein the pre-installed key is used to guide and position the tiller 2 so that the clearance around the keyway of the tiller 2 and the upper and lower openings of the keyway of the rudder stock 1 meets the requirements, and the working method includes a pre-treatment step, a pre-installation step, and a press-fitting step, wherein:

[0054] The pre-processing stage is used to install the pre-installed key and ensure that the positioning plate 3 and the tiller 2 are parallel;

[0055] The assembly process is used to place the tiller 2 on the conical surface of the rudder stock 1, and before the tiller 2 is completely placed on the conical surface, the pre-installed key is used for positioning and guiding, so that the keyway of the tiller 2 and the keyway of the rudder stock 1 are misaligned by less than 0.02mm:

[0056] The press-fitting link is used to press the connecting key 7 into the keyway of the tiller handle 2 and the keyway of the rudder stock 1 .

[0057] In one embodiment of the present invention, the preprocessing step includes the following steps:

[0058] a1: vertically insert the lower end of the pre-installed key into the keyway of the rudder stock 1, with the upper end of the pre-installed key exposed;

[0059] a2: Use four adjusting screw rods 6 to fix the positioning plate 3 and the tiller handle 2 to ensure that the tiller handle 2 is parallel to the positioning plate 3.

[0060] In one embodiment of the present invention, the pre-installation step specifically includes the following steps:

[0061] b1: hoist the tiller 2 and the positioning plate 3 above the rudder stock 1;

[0062] b2: Adjust the tiller 2 so that its keyway is aligned with the keyway of the rudder stock 1;

[0063] b3: The tiller handle 2 and the positioning plate 3 fall down by their own weight, and the upper end of the pre-assembled part passes through the keyway of the tiller handle 2 to perform preliminary positioning and guidance on the tiller handle 2;

[0064] b4: During the falling process of the tiller handle 2, the keyway of the tiller handle 2 is adjusted to be aligned with the keyway of the rudder stock 1, so that the matching clearance between the pre-installed key and the keyway is between 0 and 0.04 mm, until the tiller handle 2 is completely located on the conical surface of the rudder stock 1;

[0065] b5: The positioning plate 3 and the rudder stock 1 are fixedly connected by a full-thread screw 5;

[0066] b6: Remove the adjusting screw 6 to ensure that the tiller 2 can be pressed into the rudder bar 1;

[0067] b7: Install two dial gauges 9 on both sides to measure the size of the gap;

[0068] b8: Two jacks 4 are installed in place;

[0069] b9: Using the hydraulic pump 8 and the distribution controller 81, the two jacks 4 are pressurized simultaneously to press the tiller handle 2 down into the rudder stock 1 until a preset pressing amount is reached, which is 0.3-0.5 mm and a pressing force of about 780 KN.

[0070] In one embodiment of the present invention, the step b4 further comprises the following steps:

[0071] Step b41: During the falling process of the tiller handle 2, use a 0.02mm feeler gauge to measure and monitor the gap between the pre-installed key and the keyway, as well as the gaps around the keyway of the tiller handle 2 and the upper and lower openings of the keyway of the rudder stock 1. If the gaps do not meet the requirements, execute step b42;

[0072] Step b42: For the side with excessive clearance, fine-tune the single-side horizontal pressure by using the jack 4, and compare the two sides of the dial gauge 9 until the clearance meets the requirement;

[0073] In one embodiment of the present invention, the press-fitting process comprises the following steps:

[0074] C1: Pull out the pre-installed key;

[0075] C2: Check the alignment of the upper and lower openings. If the gaps have been adjusted to meet the requirements, proceed to step C3;

[0076] C3: Freeze the connection key 7 with dry ice, and use the hydraulic pump 8, the distribution controller 81 and the jacks 4 on both sides to press the shrunken connection key 7 into the key slot of the tiller handle 2 and the key slot of the rudder stock 1 until the connection key 7 is pressed into place.

[0077] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A tiller handle connecting device with a key, comprising a connecting key, a tiller handle and a tiller stock, characterized in that: Also includes, A positioning plate is horizontally fixed above the tiller handle, and an avoidance gap is provided between the tiller handle and the positioning plate; A jack is arranged in the avoidance gap, and its upper and lower ends respectively support the positioning plate and the tiller handle, so as to press the tiller handle into the rudder stock.

2. A tiller handle connecting device with a key according to claim 1, characterized in that: It also includes a full-thread screw and two first nuts threadedly connected to the full-thread screw. The full-thread screw is vertically threadedly connected to the rudder bar and passes through the positioning plate. The two first nuts respectively abut against the upper and lower sides of the positioning plate.

3. A tiller handle connecting device with a key according to claim 1, characterized in that: The plurality of jacks are symmetrically arranged about the rudder stock.

4. A tiller handle connecting device with a key according to claim 1, characterized in that: It also includes an adjusting screw and two second nuts threadedly connected to the adjusting screw, the upper end of the adjusting screw passes through the fixing plate, and the two second nut adjusting screws respectively abut against the upper and lower sides of the fixing plate, the tiller handle is provided with a limiting hole corresponding to the adjusting screw, and the lower end of the adjusting screw is inserted into the limiting hole and threadedly connected.

5. The method according to claim 4, characterized in that: The plurality of adjusting screw rods are symmetrically arranged about the rudder bar.

6. A working method, characterized in that: The working method is realized by the cooperation of a tiller connecting device with a key, a pre-installed key, and a dial indicator. The pre-installed key is used to guide and position the tiller so that the clearance around the keyway of the tiller and the upper and lower openings of the keyway of the rudder stock meets the requirements. The working method includes a pre-treatment step, a pre-installation step, and a press-fitting step, wherein: The pre-processing stage is used to install the pre-installed key and ensure that the positioning plate and the tiller are parallel; The assembly process is used to place the tiller on the conical surface of the rudder stock, and before the tiller is completely placed on the conical surface, the pre-installed key is used for positioning and guiding, so that the misalignment of the keyway of the tiller and the keyway of the rudder stock is less than 0.02mm: The press-fitting link is used to press the connecting key into the keyway of the tiller handle and the keyway of the rudder stock.

7. A working method according to claim 6, characterized in that The pre-processing step includes the following steps: a1: vertically insert the lower end of the pre-installed key into the keyway of the rudder stock, with the upper end of the pre-installed key exposed; a2: Use multiple adjusting screws to fix the positioning plate and the tiller to ensure that the tiller is parallel to the positioning plate.

8. A working method according to claim 6, characterized in that: The pre-installation process specifically includes the following steps: b1: Hoist the tiller and the positioning plate above the rudder stock; b2: Adjust the tiller so that its keyway is aligned with the keyway of the rudder stock; b3: The tiller handle and the positioning plate fall down by their own weight, and the upper end of the pre-assembled part passes through the keyway of the tiller handle to perform preliminary positioning and guidance on the tiller handle; b4: During the falling process of the tiller, adjust the keyway of the tiller to the center of the keyway of the rudder stock so that the matching clearance between the pre-installed key and the keyway is between 0 and 0.04 mm, until the tiller is completely located on the conical surface of the rudder stock; b5: The positioning plate and the rudder stock are fixedly connected by a full-thread screw; b6: Remove the adjusting screw; b7: Install the dial indicator; b8: The jack is installed in place; b9: Use the jack to press the tiller handle down into the rudder stock until it reaches the preset pressing amount.

9. A working method according to claim 8, characterized in that The step b4 further comprises the following steps: Step b41: During the falling process of the tiller, use a 0.02mm feeler gauge to measure and monitor the gap between the pre-installed key and the keyway, as well as the gaps around the keyway of the tiller and the upper and lower openings of the keyway of the rudder stock. If the gaps do not meet the requirements, execute step b42; Step b42: For the side where the gap exceeds the tolerance, fine-tune the gap by applying pressure in the horizontal direction on one side using a jack, and compare the gap using the dial indicators on both sides until the gap meets the requirement.

10. A working method according to claim 6, characterized in that The press-fitting process includes the following steps: C1: Pull out the pre-installed key; C2: Check the alignment of the upper and lower openings. If the gaps have been adjusted to meet the requirements, proceed to step C3; C3: Freeze the connection key with dry ice, and press the jacks on both sides simultaneously to press the shrunken connection key into the keyway of the tiller handle and the keyway of the rudder stock until the connection key is pressed into place.

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