CN114017653B - Method for replacing lubricating grease of fully suspended rudder system connected with supporting pipe key and effect evaluation method thereof - Google Patents

Method for replacing lubricating grease of fully suspended rudder system connected with supporting pipe key and effect evaluation method thereof Download PDF

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Publication number
CN114017653B
CN114017653B CN202111288017.8A CN202111288017A CN114017653B CN 114017653 B CN114017653 B CN 114017653B CN 202111288017 A CN202111288017 A CN 202111288017A CN 114017653 B CN114017653 B CN 114017653B
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observation point
grease
rudder
lubricating grease
filling
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CN114017653A (en
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高爱东
李小旭
刘炜
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Jiangnan Shipyard Group Co Ltd
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Jiangnan Shipyard Group Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B81/00—Repairing or maintaining vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N27/00—Proportioning devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N33/00—Mechanical arrangements for cleaning lubricating equipment; Special racks or the like for use in draining lubricant from machine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2210/00—Applications
    • F16N2210/06—Marine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2270/00—Controlling
    • F16N2270/20—Amount of lubricant

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Lubricants (AREA)
  • Earth Drilling (AREA)

Abstract

A method for replacing lubricating grease of a fully suspended rudder system connected with a supporting pipe key comprises the following steps: s1, setting observation points a, b, c, d, e and f; s2, adjusting the draught or the floating state of the ship to enable the drainage screw plug on the surface of the rudder blade to be exposed out of the water surface; s3, opening all the five observation points in the step S1, wherein an underwater observation point e is in a sealed state; s4, at an observation point a, a drainage tube is inserted to the bottom of a rudder blade cover plate sealing cavity at an observation point e through a hollow rudder stock, and lubricating grease in v3 and v4 is absorbed; s5, respectively sucking and removing the grease in v1, v2 and v 5; when the observation point f overflows lubricating grease, stopping filling, and installing a drainage plug screw of the observation point f; s6, injecting new grease; on the basis of the existing lubricating grease method for the fully suspended rudder system, the invention provides the method that the ship floating state is adjusted without dry docking or upward discharging of the ship so that the lubricating grease which is failed in the fully suspended rudder system with the supporting tube is replaced under the condition that the discharging screw plug is exposed out of the water surface, thereby avoiding dry docking of the ship and achieving the purpose of saving cost.

Description

Method for replacing lubricating grease of fully suspended rudder system connected with supporting pipe key and effect evaluation method thereof
Technical Field
The invention relates to the field of ships, in particular to a method for replacing lubricating grease of a fully suspended rudder system connected with a supporting pipe key and an effect evaluation method thereof.
Background
Ship design instruction manual (third edition) -rudder equipment-determination of rudder equipment component dimensions-rudder stock-in order to protect the rudder stock from seawater corrosion, appropriate protective measures should be taken on the rudder stock, such as suitable sealing devices, painting special paints on the surface of the rudder stock, etc. The supporting tube full-suspension rudder system is characterized in that the supporting tube is static relatively, the rudder blade moves relative to the supporting tube when in action, the upper bearing ring rudder blade nested in the rudder blade is in clearance fit with the supporting tube, and the inevitable lubricating grease is used for a long time in the rudder system or needs to be replaced after water is emulsified. During the construction stage, the rudder blade is in the atmosphere and accessible to personnel during the filling of the lubricating grease, and after the ship is launched, the ship is usually required to enter a dry dock or be arranged upwards, so that the lubricating grease is time-consuming and labor-consuming in a large quantity of involved projects.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention provides a grease replacement method for a fully suspended rudder system with a support tube key.
The invention provides a method for replacing lubricating grease of a fully suspended rudder system connected with a supporting pipe key, which comprises the following steps of: s1, setting the following observation points according to the movement path of the grease in the suspended rudder system: the observation point a is a central hole at the top end of the rudder stock, the observation point b is a through hole on the end surface of the brake ring of the rudder stock and an assembly gap between the brake ring of the rudder stock and the sealing stuffing box, the observation point c is a bottom sealing groove between a base pipe of the supporting pipe and the supporting pipe, the observation point d is a top sealing groove between a bearing ring and the supporting pipe on the rudder blade, and the observation point e is an installation position of a cover plate of the rudder blade; the observation point f is that the upper part of the rudder blade penetrates through the position of the rudder blade and a drainage screw plug seat plate (21) of the circular table of the rudder blade; s2, adjusting the draught or the floating state of the ship to enable the drainage screw plug on the surface of the rudder blade to be exposed out of the water surface; s3, removing the hoisting ring screw plug to enable the observation point a to be in an open state; loosening a gland of the packing box and removing the matched butter packing so as to enable the observation point b to be in an open state; loosening the watertight compression ring and removing the matched first rubber ring to enable the observation point c to be in an open state; loosening a bearing ring on the rudder blade and removing a matched second rubber ring to enable the observation point d to be in an open state; releasing the plug screw to open the observation point f; the underwater observation point e is in a sealed state; s4, at an observation point a, a drainage tube is inserted to the bottom of a rudder blade cover plate sealing cavity at an observation point e through a hollow rudder stock, and lubricating grease in v3 and v4 is sucked; s5, at an observation point f, inserting the drainage tube to the position of the upper end surface of the lower rudder blade bushing through a gap between the support tube and the circular table of the rudder blade, and absorbing lubricating grease in v2 and v 5; clean lubricating grease is filled through a filling port on a supporting pipe seat pipe, so that the lubricating grease in v1 is sucked; s6, continuously injecting lubricating grease into a filling port on the support pipe seat pipe; s5, when lubricating grease overflows from the observation point f, suspending filling, and installing a drainage screw plug of the observation point f; s7, continuously injecting lubricating grease into a filling port on the support pipe seat pipe; when grease overflows from the first observation point b, c or d, suspending filling, cleaning the position, and installing a sealing element of the observation point; continuing filling, when grease overflows from the second observation point b, c or d, suspending filling, cleaning the position, and installing the observation point sealing element; continuing filling, when grease overflows from the third observation point b, c or d, suspending filling, cleaning the position, and installing the observation point sealing element; s8, filling lubricating grease from the observation point a, filling the hollow rudder stock channel and the cavity at the side of the rudder blade cover plate with the lubricating grease as much as possible, assisting the hollow rudder stock channel and the cavity at the side of the rudder blade cover plate to exhaust outwards by using a drainage stick and other tools in the filling process, cleaning the top end of the rudder stock, and installing a lifting ring screw plug; and S9, sealing the filling port through an oil seal plug screw to restore the normal floating state of the ship.
Preferably, after the step S5 is finished, serial washing lubricating grease is filled through a filling port on the supporting tube seat tube, wherein the serial washing lubricating grease refers to lubricating grease which has the same chemical composition as the original lubricating grease and is higher in penetration degree and easier to flow, and therefore the serial washing of the lubricating grease which is deteriorated in each lubricating grease filling cavity is facilitated. And continuously filling enough serial-washing lubricating grease, overflowing the deteriorated lubricating grease at the observation point f, and stopping filling the serial-washing lubricating grease when the serial-washing lubricating grease reaches the required cleanliness. And (4) absorbing and washing the lubricating grease by using the drainage tube at the observation point f as much as possible.
Preferably, grease is filled into the rudder stock hollow channel v3 and the rudder blade cover plate side cavity v4 at the observation point a as much as possible in a serial washing mode, compressed air is blown into the rudder blade cover plate side cavity through the drainage tube at the observation point a to accelerate serial washing of the failed grease, and when the expected cleanliness is achieved, the compressed air is stopped from being filled. The grease was sucked off and washed as much as possible with the drain tube at observation point a.
An effect evaluation method according to the fully suspended rudder system grease replacing method comprises the following steps: step P1, calculating theoretical grease filling amount sigma of the suspension rudder system: formula (1);
in the formula (1), V 1 : theoretical volume, V, formed between the supporting tube and the supporting tube seat tube 2 : theoretical volume, V, formed between the support tube and the rudder stock 3 : theoretical volume, V, formed in the hollow channel of the rudder stock 4 : theoretical volume, V, formed in the cavity on the cover side of the rudder blade 5 : the theoretical volume is formed between the stay tube and the circular table of the rudder blade;
step P2, recording the volume Vf of the lubricating grease injected into the suspended rudder system when the lubricating grease overflows from the observation point f in the step S6; when the grease overflowing from the first observation point of the observation points b, c and d in the step S7 is recorded, the filling is suspended, and when the grease overflowing from the first observation point is recorded, the volume V of the grease filled into the suspended rudder system is recorded a (ii) a When the lubricating grease overflowing from the second observation point is recorded, the volume V of the lubricating grease filled into the suspended rudder system b (ii) a When the third observation point overflows the lubricating grease, the volume V of the lubricating grease filled into the suspended rudder system c (ii) a The volume V of grease filled at observation point a in step S8 is recorded 5 ；
Step P3, calculating the following formulas
Actual amount of grease added
Σ0＝V f +V a +V b +V c +V 5 Formula (2);
wherein, in the formula (2),
theoretical grease filling amount sigma and actual grease filling amount sigma of fully suspended rudder system 0 Volume difference Δ V of
ΔV＝∑-∑ 0 Formula (3);
and evaluating the filling result according to the delta V value.
As described above, the method for replacing the grease of the fully suspended rudder system with the support pipe key according to the present invention has the following advantages: on the basis of the existing lubricating grease method for the fully suspended rudder system, the invention provides a method which does not need dry docking or upward arrangement of a ship, and replaces the failed lubricating grease in the fully suspended rudder system with the supporting tube under the condition that the ship is lightly loaded with water or the ship is adjusted to float so that the drainage screw plug is exposed out of the water surface, thereby avoiding dry docking of the ship, shortening the operation time and achieving the purpose of saving the cost; the lubricating grease of the rudder system is fully filled, the actual filling amount approaches to the theoretical filling amount, key components such as a rudder stock and the like are prevented from being corroded, the key lubrication of the rudder system is sufficient, the abrasion of a rotating component is avoided, the service life of the rudder system is prolonged, and the reliability of the rudder system is improved; according to the effect evaluation method for the fully suspended rudder system lubricating grease connected with the supporting pipe key, provided by the invention, the delta V value can be used for evaluating the filling effect, the smaller the delta V is, the more sufficient the lubricating grease is filled, the more thorough the lubricating grease is replaced, and therefore, the condition of lubricating grease replacement can be reflected from the side surface.
Drawings
FIG. 1 is a full section structure diagram of a suspended rudder system connected by a supporting tube key.
FIG. 2 is a full sectional view of an open position of each observation point of a suspended rudder system with a support tube key connection according to the present invention.
Fig. 3 is an enlarged view of the area a in fig. 1.
Fig. 4 is an enlarged view of the region B in fig. 1.
Fig. 5 is an enlarged view of the region C in fig. 1.
Fig. 6 is an enlarged view of region D in fig. 1.
Fig. 7 is an enlarged view of region E in fig. 2.
Fig. 8 is an enlarged view of the region K in fig. 1.
Description of the reference numerals:
1. a tiller; 2. supporting a tube; 201. a first through hole; 202. a second through hole; 3. supporting a tube seat tube; 301. a filling port; 4. a rudder blade round table; 5. a hoisting ring plug screw; 6. sealing the stuffing box; 7. a tiller brake ring; 701. an end face through hole; 8. an oil seal plug screw; 9. butter packing filler; 10. a gland of the stuffing box; 11. a watertight compression ring; 12. a first rubber ring; 13. bearing rings are arranged on the rudder blades; 14. a second rubber ring; 15. a rudder blade cover plate; 16. a rudder blade; 17. a third rubber ring; 18. a thrust bearing; 19. a screw cap type oil cup; 20. an oil cup cover; 21. a bleeder plug seat plate; 22. a bleeder plug screw; 23. a rudder blade lower bushing;
a-f correspond to corresponding observation points a-f one by one;
v1, a gap between the support tube and the support tube seat tube;
v2, a gap between the support tube and the rudder stock;
v3, hollow passage of rudder stock;
v4, a cavity on the cover plate side of the rudder blade;
v5, a gap between the support tube and the rudder blade circular truncated cone.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship may be made without substantial technical changes.
As shown in fig. 1-8, the prior art fully suspended rudder system grease filling process with a stay tube key connection sets up six observation points, each of which is described as follows: observation point a: the center hole at the top end of the rudder stock 11 is sealed by a hoisting ring plug screw 5 through screw threads.
Observation point b: the observation point b is used for observing whether lubricating grease overflows from a gap cavity between the rudder stock 1 and the support pipe 2 or not at the through hole 701 of the end face of the brake ring of the rudder stock 1 and at the assembly gap between the brake ring of the rudder stock 1 and the seal stuffing box 6, and after the observation is finished, the upper part of the observation point b is sealed by adopting a butter packing 9 and a stuffing box gland 10.
Observation point c: the device is a bottom sealing groove between a base pipe of a supporting pipe 2 and the supporting pipe 2 and is used for observing whether lubricating grease overflows from a gap cavity v1 between the supporting pipe 2 and the base pipe of the supporting pipe 2, and after the observation is finished, an observation point c is sealed by a first rubber ring 12 and a watertight compression ring 11.
Observation point d: the top sealing groove between the bearing ring 13 on the rudder blade 16 and the support tube 2 is used for observing whether lubricating grease overflows from a gap cavity v5 between the support tube 2 and the circular truncated cone 4 of the rudder blade 16, and after the observation is finished, an observation point d is sealed by the second rubber ring 14 and the bearing ring 13 on the rudder blade 16.
Observation point e: the observation point e is used for observing whether lubricating grease overflows from the cover plate side cavity v4 of the rudder blade 16, and after the observation is finished, the observation point e adopts the cooperation sealing of the rudder blade cover plate 15 and the third rubber ring 17.
Observation point f: the upper part of the rudder blade 16 is inserted into a bleeder screw seat plate 21 of the rudder blade 16 and the rudder blade round table 4 and a bleeder screw 22 installed therein. The observation point f is used for accelerating the exhaust in the process of filling the gap cavity v5 between the support tube 2 and the rudder blade circular truncated cone 4 with lubricating grease, the filling efficiency is improved, when the observation point f overflows, the drain screw plug seat plate 21 is cleaned, and the drain screw plug 22 is installed in a sealing mode.
As shown in fig. 1 to 8, the present invention provides an embodiment of a grease replacement method for a fully suspended rudder system with a 2-key connection of support tubes, comprising the following steps:
step S1, setting the following observation points according to the movement path of the grease in the suspended rudder system: an observation point a is a central hole at the top end of the rudder stock 1, an observation point b is an end surface through hole 701 of the rudder stock brake ring 7 and an assembly gap between the rudder stock brake ring 7 and the seal stuffing box 6, an observation point c is a bottom seal groove between the support pipe seat tube 3 and the support pipe 2, an observation point d is a top seal groove between the bearing ring 13 on the rudder blade 16 and the support pipe 2, an observation point e is an installation position of a rudder blade cover plate 15, and an observation point f is a position where the upper part of the rudder blade 16 penetrates through the rudder blade 16 and a release screw plug seat plate 21 of the rudder blade circular truncated cone 4.
And S2, adjusting the draught or the floating state of the ship to enable the drain screw plug 22 on the surface of the rudder blade 16 to be exposed out of the water surface.
S3, removing the hoisting ring plug screw 5 to enable the observation point a to be in an open state; loosening a gland 10 of the stuffing box and removing the matched butter packing 9 to enable an observation point b to be in an open state; loosening the watertight pressing ring 11 and removing the matched first rubber ring 12 to enable the observation point c to be in an open state; loosening a bearing ring 13 on a rudder blade 16 and removing a matched second rubber ring 14 to enable an observation point d to be in an open state; releasing the bleeder plug 22 to open the observation point f; the state of an observation point e under water is unchanged and is in a sealing state; and S4, at the observation point a, inserting a drainage tube into the bottom of a sealed cavity of a rudder blade cover plate 15 at the observation point e through the hollow part of the rudder stock 1, and sucking the lubricating grease in v3 and v4 as clean as possible.
And S5, at an observation point f, inserting the drainage tube to the position of the upper end surface of the rudder blade lower bushing 23 through the gap between the support tube 2 and the rudder blade circular truncated cone 4, sucking and removing the grease in v2 and v5 as cleanly as possible, and filling clean grease through the filling port 301 on the support tube base tube 3 during the period to suck and remove the grease in v 1.
And S6, filling serial-washing lubricating grease through the filling port 301 on the supporting pipe seat pipe 3, wherein the serial-washing lubricating grease refers to lubricating grease which has the same chemical components as the original lubricating grease and has larger cone penetration and is easier to flow, so that the serial-washing of the lubricating grease which is deteriorated in each lubricating grease filling cavity is facilitated. And continuously filling enough serial-washing lubricating grease, overflowing the deteriorated lubricating grease at the observation point f, and stopping filling the serial-washing lubricating grease when the serial-washing lubricating grease reaches the required cleanliness. And (4) absorbing and washing the grease through the drainage tube at the observation point f as much as possible.
And S7, filling serial-washing lubricating grease into the hollow rudder stock channel v3 and the cavity v4 on the rudder blade cover plate side as much as possible at the observation point a, blowing compressed gas into the cavity on the rudder blade cover plate 15 side through the drainage tube at the observation point a to accelerate serial washing of the failed lubricating grease, and stopping injecting the compressed gas when the expected cleanliness is achieved. And absorbing and washing the lubricating grease by using the drainage tube at the observation point a as much as possible.
Step S8, continuously injecting lubricating grease into a filling port 301 on the supporting pipe seat pipe 3 by using a lubricating grease filling machine; when the grease overflows from the observation point f, the filling is suspended, the position is cleaned, and the drain plug 22 of the observation point f is installed.
Step S9, continuously injecting lubricating grease into a filling port 301 on the supporting pipe seat pipe 33 by using a lubricating grease filling machine; when grease overflows from the first observation point b, c or d, suspending filling, cleaning the position, and installing a sealing element of the observation point; continuing filling, when grease overflows from the second observation point b, c or d, suspending filling, cleaning the position, and installing the observation point sealing element; filling is continued, when grease overflows from the third observation point b, c and d, filling is suspended, the position is cleaned, and the observation point sealing element is installed.
And S10, filling lubricating grease from the observation point a, filling lubricating grease into the hollow rudder stock channel v3 and the rudder blade cover plate side cavity v4 as much as possible, assisting the inside of the hollow rudder stock channel v3 and the rudder blade cover plate side cavity v4 to exhaust outwards by using tools such as a drainage stick and the like in the filling process, cleaning the top end of the rudder stock 1, and installing a lifting ring screw plug 5.
And S11, sealing the filling port 301 through the oil seal plug screw 8, and recovering the normal floating state of the ship.
The support tube key connection suspension rudder system is a classic component, and after observation points a, b, c, d, e and f are well sealed, the cavity areas v1, v2, v3, v4 and v5 of the rudder system are sealed spaces. v1 after the ship is launched, lubricating grease can be filled. The outer circular surface of the upper part of the supporting pipe is provided with a plurality of first through holes 201, the outer circular surface of the lower part of the supporting pipe is provided with a plurality of second through holes 202, the first through holes are communicated with v2, the v2 is communicated with v5 through the second through holes, and the hollow rudder stock channel v3 is communicated to v 4. In addition, a plurality of filling ports 301 are arranged on the side surface of the supporting pipe seat pipe, and each filling port 301 is used for being communicated with an external oil filling pipeline so as to add lubricating grease.
In addition, the existing lubricating grease replacement method realizes that the lubricating grease is replaced in a floating state without dry dock of the ship. The upper part of the rudder blade 20 is provided with a drainage plug screw seat plate 21 which penetrates through the circular truncated cone 4 of the rudder blade, so that v5 is communicated with the outside through the drainage plug screw seat plate 21; when the ship is lightly loaded with a waterline or the ship is adjusted to float to expose the drainage screw plug out of the water surface, the lubricating grease which is out of work in the fully suspended rudder system with the supporting tube is replaced, thereby avoiding dry dock of the ship, shortening the operation time and achieving the purpose of saving cost.
Before the lubricating grease is filled at the observation point a by using the method, the lubricating grease filled into the area v1 from the filling port is most easily moved to the observation point f in the lubricating grease filling process because the observation point f is open and has a relatively large through hole size, the lubricating grease enters the area v2 through the first through hole 201, the lubricating grease in the area v2 enters the area v5 through the second through hole 202, when the area v5 is nearly filled, the lubricating grease overflows from the observation point f, a drain screw plug is installed, and the observation point f is sealed. And (4) continuously filling lubricating grease, and orderly installing the sealing elements of the observation points b, c and d according to the overflow sequence of the lubricating grease. Grease is filled into the area v1 from the filling port, when a large amount of grease overflows from the observation point c, the grease is considered to be fully filled in the area v1, and when the grease overflows from the observation point d, the grease is considered to be fully filled in the area v 5; when the observation point b overflows, the lubricating grease in the v2 area is considered to be fully filled; in addition, it should be noted that the sealing elements of the three-point observation points are orderly installed according to the grease overflow sequence. And after a large amount of lubricating grease overflows from the observation points b, c and d and the observation points b, c and d are sealed, the internal communication area is filled with the lubricating grease, and the filling is suspended for three times, so that the lubricating grease overflows from all the observation points b, c and d, and the filling is sufficient. And (3) filling lubrication into the hollow cavity of the hollow rudder stock channel v2 and the cavity of the rudder blade cover plate side v4 as much as possible at the observation point a, then sealing a hoisting ring plug screw at the position, and finally sealing the filling port through an oil seal plug screw to seal the internal communication area.
The method for replacing the lubricating grease of the suspended rudder system realizes the efficient replacement of the lubricating grease of the rudder system according to the assembly sequence and the member characteristics among the classical key-connected fully-suspended rudder system members with the supporting tube 2, the actual filling amount approaches to the theoretical filling amount, the corrosion of key members such as a rudder stock 1 and the like is avoided, the key lubrication of the rudder system is sufficient, the abrasion of a rotating member is avoided, the service life of the rudder system is prolonged, and the reliability of the rudder system is improved.
Further, since the grease filling overflow sequence is related to the machining accuracy of the components and the fit clearance, when the grease filling is performed in step S9, if the grease does not overflow at the last observation point, the flow of the grease in the rudder system can be accelerated by rotating the rudder stock 1.
An embodiment of the effect evaluation method according to the grease replacement method of the present invention includes the steps of:
p1, calculating theoretical lubricating grease filling quantity sigma of a suspended rudder system: Σ = V 1 +V 2 +V 3 +V 4 +V 5 Formula (1)
In the formula (1), the reaction mixture is,
V 1 : the theoretical volume formed between the support tube 2 and the support tube seat tube 3,
V 2 : the theoretical volume formed between the support tube 2 and the rudder stock 1,
V 3 : the theoretical volume formed in the hollow channel of the rudder stock,
V 4 : the theoretical volume formed in the cavity on the cover side of the rudder blade 16,
V 5 : a theoretical volume is formed between the support tube 2 and the circular truncated cone 4 of the rudder blade 16;
step P2, when the method for fully filling the lubricating grease of the suspension rudder system is implemented, the volume V of the lubricating grease filled into the suspension rudder system when the lubricating grease overflows from the observation point f in the step S8 is recorded f . When the grease overflowing from the first observation point b, c or d in the step S9 is recorded, the filling is suspended, and when the grease overflowing from the first observation point is recorded, the volume V of the grease filled into the suspended rudder system a (ii) a When the lubricating grease overflowing from the second observation point is recorded, the volume V of the lubricating grease filled into the suspended rudder system b (ii) a When the third observation point is recorded to overflow the lubricating grease, the volume V of the lubricating grease which is filled into the suspended rudder system c . The volume V of grease filled at observation point a in step S10 is recorded 5 ；
Step P3, calculating the following formulas
Actual amount of grease
Σ0＝V f +V a +V b +V c +V 5 Formula (2)
Theoretical grease filling amount sigma and actual grease filling amount sigma of fully suspended rudder system 0 Volume difference Δ V of
ΔV＝∑-∑ 0 Formula (3)
Evaluating the filling effect according to the value of delta V, wherein the smaller the delta V is, the more sufficient the lubricating grease is replaced, the value of delta V is larger than that of delta V in the construction stage due to the fact that the lubricating grease remains between rudder blade components and is washed by the lubricating grease,
if clean grease does not seep out from the gland gap of the stuffing box after the rudder system moves for a long time, the grease is required to be continuously filled into the rudder system from the filling port 301 until the clean grease seeps out from the gland gap of the stuffing box.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (5)

1. A method for replacing lubricating grease of a fully suspended rudder system connected with a supporting pipe key is characterized by comprising the following steps:
s1, setting the following observation points according to the movement path of the grease in the suspended rudder system:
the observation point a is a central hole at the top end of the rudder stock (1),
the observation point b is an end surface through hole (701) of the rudder stock brake ring (7) and an assembly gap between the rudder stock brake ring (7) and the sealing stuffing box (6),
the observation point c is a bottom sealing groove between the support tube base tube (3) and the support tube (2),
the observation point d is a top sealing groove between the bearing ring (13) on the rudder blade (16) and the supporting tube (2),
the observation point e is the installation position of the rudder blade cover plate (15);
the observation point f is the position where the upper part of the rudder blade (16) penetrates through the rudder blade (16) and a drainage screw plug seat plate (21) of the rudder blade circular truncated cone (4);
s2, adjusting the draught or the floating state of the ship to enable a drainage screw plug (22) on the surface of the rudder blade (16) to be exposed out of the water surface;
s3, removing the hoisting ring plug screw (5) to enable the observation point a to be in an open state; loosening a gland (10) of the stuffing box and removing the matched butter packing (9) to enable an observation point b to be in an open state; loosening the watertight pressing ring (11) and removing the matched first rubber ring (12) to enable the observation point c to be in an open state; loosening a bearing ring (13) on a rudder blade (16) and removing a matched second rubber ring (14) to enable an observation point d to be in an open state; releasing the plug screw (22) to open the observation point f; the underwater observation point e is in a sealed state;
s4, at an observation point a, a drainage tube is inserted to the bottom of a sealed cavity of a rudder blade cover plate (15) at the observation point e through the hollow of the rudder stock (1), and lubricating grease in a hollow channel of the rudder stock and a cavity on the side of the rudder blade cover plate is absorbed;
s5, at an observation point f, inserting the drainage tube into the position of the upper end surface of the rudder blade lower bushing (23) through a gap between the support tube (2) and the rudder blade circular truncated cone (4), and absorbing lubricating grease in a gap between the support tube (2) and the rudder stock (1) and a gap between the support tube (2) and the rudder blade circular truncated cone (4); clean lubricating grease is filled through a filling port (301) on the supporting pipe seat pipe (3), so that the lubricating grease in a gap between the supporting pipe (2) and the supporting pipe seat pipe (3) is absorbed;
s6, continuously injecting lubricating grease into a filling port (301) on the supporting pipe seat pipe (3); when the grease overflows from the observation point f, the filling is suspended, and a drainage screw plug (22) of the observation point f is installed;
s7, continuously injecting lubricating grease into a filling port (301) on the supporting pipe seat pipe (3); when grease overflows from the first observation point b, c or d, the filling is suspended, and a sealing element of the observation point is installed; continuously filling, stopping filling when a second observation point b, c or d overflows lubricating grease, and installing a sealing element of the observation point; continuing filling, and suspending filling when grease overflows from the third observation point b, c or d, and installing the observation point sealing element;
s8, filling lubricating grease from the observation point a, filling the hollow rudder stock channel and the cavity at the side of the rudder blade cover plate with the lubricating grease as much as possible, assisting the hollow rudder stock channel and the cavity at the side of the rudder blade cover plate to exhaust outwards by using a drainage stick tool in the filling process, cleaning the top end of the rudder stock (1), and installing a lifting ring plug screw (5);
s9, the filling port (301) is sealed through an oil seal plug screw (8), and the normal floating state of the ship is recovered.
2. The method for replacing the grease of the fully suspended rudder system with the connected support tube key according to the claim 1, wherein after the S5 is finished, the grease is injected through the filling port (301) on the seat tube of the support tube (2), the deteriorated grease overflows from the observation point f, the grease injection and the grease injection are stopped, and the grease is sucked and removed by the drainage tube at the observation point f.
3. The method for replacing the lubricating grease of the fully suspended rudder system connected with the support pipe key according to claim 2, wherein the grease is injected into the hollow passage of the rudder stock and the hollow cavity of the rudder blade cover plate from an observation point a and is washed continuously, compressed gas is blown into the hollow cavity of the rudder blade cover plate through a drainage pipe at the observation point a, when the expected cleanliness is reached, the injection of the compressed gas is stopped, and the lubricating grease is sucked and removed by the drainage pipe at the observation point a.
4. The method for replacing grease in the fully suspended rudder system with attached pipe key as claimed in claim 3, wherein the step S7 is executed to accelerate the flow of grease in the rudder system by turning the rudder stock (1) if the grease is not overflowed from the last observation point.
5. An effect evaluation method using the fully suspended rudder grease replacing method according to claim 1, comprising the steps of:
step P1, calculating theoretical grease filling amount sigma of the suspension rudder system: Σ = V 1 +V 2 +V 3 +V 4 +V 5 Formula (1);
in the formula (1), the reaction mixture is,
V 1 : the theoretical volume formed between the support tube and the support tube seat tube,
V 2 : the theoretical volume formed between the support tube and the rudder stock,
V 3 : the theoretical volume formed in the hollow channel of the rudder stock,
V 4 : the theoretical volume formed in the cavity at the side of the cover plate of the rudder blade,
V 5 : the theoretical volume is formed between the stay tube and the rudder blade round table;
step P2, when the grease overflows from the observation point f in the step S6, the volume Vf of the grease filled into the suspended rudder system is recorded; when the grease overflowing from the first observation point of the observation points b, c and d in the step S7 is recorded, the filling is suspended, and when the grease overflowing from the first observation point is recorded, the volume V of the grease filled into the suspended rudder system is recorded a (ii) a The volume V of the grease injected into the rudder system when the grease spilled from the second observation point was recorded b (ii) a When the third observation point is recorded to overflow the lubricating grease, the volume V of the lubricating grease which is filled into the suspended rudder system c (ii) a Recording the volume V of grease filled at observation point a in step S8 5 ；
Step P3, calculating the following formulas
Actual amount of grease
Σ0＝V f +V a +V b +V c +V 5 Formula (2);
wherein, in the formula (2),
theoretical grease filling amount sigma and actual grease filling amount sigma of fully suspended rudder system 0 Volume difference Δ V of
ΔV＝∑-∑ 0 Formula (3);
and evaluating the filling result according to the delta V value.
CN202111288017.8A 2021-11-02 2021-11-02 Method for replacing lubricating grease of fully suspended rudder system connected with supporting pipe key and effect evaluation method thereof Active CN114017653B (en)

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JP2006105297A (en) * 2004-10-06 2006-04-20 Nsk Ltd Bearing device
WO2006096723A2 (en) * 2005-03-08 2006-09-14 Larry Rayner Russell Lubrication system for pin connections
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CN207394331U (en) * 2017-09-22 2018-05-22 新乡市恒星科技有限责任公司 A kind of grease adding equipment of anti-overflow
CN109282133A (en) * 2018-09-30 2019-01-29 江南造船(集团)有限责任公司 The spade rudder system grease adding method and its recruitment evaluation method for thering is support tube to be keyed
CN110529718A (en) * 2019-09-12 2019-12-03 无锡金诚工程技术服务有限公司 A kind of bridge sling anchorage pin shaft refueling device and its oiling method
CN112082081A (en) * 2020-09-04 2020-12-15 中船黄埔文冲船舶有限公司 Fin stabilizer lubricating system and lubricating operation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006105297A (en) * 2004-10-06 2006-04-20 Nsk Ltd Bearing device
WO2006096723A2 (en) * 2005-03-08 2006-09-14 Larry Rayner Russell Lubrication system for pin connections
JP2009180297A (en) * 2008-01-31 2009-08-13 Jfe Steel Corp Grease hose replacement method
CN204611290U (en) * 2015-03-15 2015-09-02 邯郸市康特轴承有限公司 Bearing grease filling apparatus
CN207394331U (en) * 2017-09-22 2018-05-22 新乡市恒星科技有限责任公司 A kind of grease adding equipment of anti-overflow
CN109282133A (en) * 2018-09-30 2019-01-29 江南造船(集团)有限责任公司 The spade rudder system grease adding method and its recruitment evaluation method for thering is support tube to be keyed
CN110529718A (en) * 2019-09-12 2019-12-03 无锡金诚工程技术服务有限公司 A kind of bridge sling anchorage pin shaft refueling device and its oiling method
CN112082081A (en) * 2020-09-04 2020-12-15 中船黄埔文冲船舶有限公司 Fin stabilizer lubricating system and lubricating operation method thereof

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