CN114455029A - Installation process of tail shaft system of oil lubrication propeller - Google Patents
Installation process of tail shaft system of oil lubrication propeller Download PDFInfo
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- CN114455029A CN114455029A CN202210227304.6A CN202210227304A CN114455029A CN 114455029 A CN114455029 A CN 114455029A CN 202210227304 A CN202210227304 A CN 202210227304A CN 114455029 A CN114455029 A CN 114455029A
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- 238000005461 lubrication Methods 0.000 title claims abstract description 7
- 238000011900 installation process Methods 0.000 title abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 93
- 239000010959 steel Substances 0.000 claims abstract description 93
- 238000009434 installation Methods 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 50
- 238000007789 sealing Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 17
- 239000003921 oil Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 5
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- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000012946 outsourcing Methods 0.000 claims description 3
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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- Ocean & Marine Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention provides an installation process of a tail shaft system of an oil lubrication propeller, which relates to the technical field of ship installation and comprises the following steps: installing a tail shaft tube: determining the deflection of a steel wire according to the positioning reference of the tail shaft tube, performing preparation treatment before the installation of the tail shaft tube, and performing tail shaft tube positioning, propeller strut support arm positioning and tail shaft tube fixing; installing a bearing of a tail shaft pipe: carrying out bearing detection, cleaning and installing a bearing; when the tail shaft tube is installed, the tail shaft tube is firstly positioned and referenced, the deflection of a steel wire is determined, then the tail shaft tube is positioned and fixed, the positioning reference of the tail shaft tube is a theoretical center line of a shaft system, the steel wire of the theoretical center line of the shaft system is pulled according to the arrangement requirement of the shaft system before the tail shaft tube is installed, the steel wire adopts a piano wire, the pulling force of the steel wire is 75% of the breaking force of the steel wire, meanwhile, the shaft system axis is determined by the steel wire, the deflection is calculated, the deflection caused by the dead weight of the steel wire is eliminated, the positioning accuracy of the tail shaft tube is improved, and the overall stability of a propeller tail shaft system is ensured.
Description
Technical Field
The invention relates to the technical field of ship installation, in particular to an installation process of a tail shaft system of an oil lubrication propeller.
Background
The ship is a general term of various ships, the ship is a vehicle capable of sailing or berthing in a water area for transportation or operation, and has different technical performance, equipment and structural types according to different use requirements, the ship is an artificial vehicle mainly operating in geographic water, in addition, a civil ship is generally called a ship, a military ship is called a ship, a small ship is called a boat or a boat, the general term is a ship or a boat, the interior mainly comprises a containing space, a supporting structure and a drainage structure, the ship is provided with a propulsion system utilizing external or self-contained energy, the appearance is generally favorable for overcoming the linear envelope of the flow of the fluid resistance, the materials are continuously updated along with the technological progress, the early stage is natural materials such as wood, bamboo, hemp and the like, and the modern times are mostly steel materials, aluminum, glass fiber, acrylic and various composite materials;
the propeller tail shaft system is an important composition structure in a ship, and is installed seriously when a ship is newly manufactured, and in the prior art, when the propeller tail shaft system is installed, a large error exists in the fixation of a tail shaft tube, the precise positioning is not easy, and the overall stability of the propeller tail shaft system is influenced.
Disclosure of Invention
Aiming at the problems, the invention provides the mounting process of the oil lubrication propeller tail shaft system, which is beneficial to improving the positioning accuracy of a tail shaft tube, reducing errors and ensuring the overall stability of the propeller tail shaft system.
In order to realize the purpose of the invention, the invention is realized by the following technical scheme: the mounting process of the oil lubrication propeller tail shaft system comprises the following steps:
installing a tail shaft tube: determining the deflection of a steel wire on the basis of positioning of the tail shaft tube, performing preparation treatment before the installation of the tail shaft tube, and performing tail shaft tube positioning, propeller strut positioning and tail shaft tube fixing;
installing a tail shaft tube bearing: carrying out bearing detection, cleaning and installing a bearing;
mounting a tail shaft: detecting a tail shaft, cleaning and installing the tail shaft, and checking and installing;
installing a tail sealing device: adopting an outsourcing standard component;
mounting a propeller: detecting the matching condition of the propeller and the tail shaft, and installing the propeller into the tail shaft;
installing a first sealing device: the shell of the adjusting head sealing device is coaxial with the tail shaft;
mounting a coupler: and detecting the contact condition of the coupler and the tail shaft, and pressing and fastening the coupler and the tail shaft.
The further improvement lies in that: the positioning reference of the tail shaft tube is as follows: the positioning reference of the tail shaft tube is a theoretical center line of a shaft system, a steel wire of the theoretical center line of the shaft system is pulled according to the arrangement requirement of the shaft system before the tail shaft tube is installed, the steel wire adopts a piano wire, and the pulling force of the steel wire is 75% of the breaking force of the steel wire; the steel wire deflection is determined as follows: the axis of a shafting is determined by adopting a steel wire, the deflection caused by the self weight of the steel wire is eliminated, and the calculation formula is as follows:
in the formula: y-deflection caused by the self weight of the steel wire; mm is
q-the gravity per unit length of steel wire, N/m;
x is the distance from the calculated deflection position to the reference point, m;
l is the distance between the head datum point and the tail datum point (the length of the steel wire between the two target frames), m;
t-the tension or the gravity of an equivalent weight, N;
0.99-correction factor.
The further improvement lies in that: the preparation treatment before the installation of the tail shaft tube specifically comprises the following steps: checking the sizes of the front bearing seat hole and the rear bearing seat hole of the tail shaft tube to meet the requirement of on-site finish machining; performing a tightness test on the tail shaft tube in a workshop to determine that leakage cannot occur; the rib position close to the head end of the stern tube and the corresponding rib position of the tail hull plate are respectively provided with a positioning device for positioning the stern tube; preparing a rib position restoration plate; and opening through holes of the stern tube on the hull plate and the rib plate according to the sample plate.
The further improvement lies in that: the positioning of the tail shaft tube is as follows: removing the steel wire from the inside of the engine room or the outside of the hull plate to the outside of the hull plate or the inside of the engine room, extending the stern tube out, and placing the stern tube in the openings on the hull plate and the rib position plate; the axis steel wire passes through the tail shaft tube and is reset; adjusting the axial position of the tail shaft tube; the radial positions of the front end and the rear end of the tail shaft tube are adjusted by the position adjusting device, so that the tail shaft tube meets the following requirements:
the position of a bearing seat hole at the front end of the tail shaft tube meets the following requirement:
r left-R right-0 … … … … … … … (1)
a＝R+(y+ξ)…………………(2)
a＝R－(y+ξ)…………………(3)
Namely: a-b ═ 2(y + ξ) … … … … … (4)
In the formula: r is the radius of the bearing seat hole, mm;
a, the distance between a point on the inner surface of a bearing seat hole and a steel wire is mm;
b, the distance between the lower point of the inner surface of the bearing seat hole and the steel wire is mm;
y-deflection of the steel wire at the head end (sag), mm;
xi-reserved inverse deformation amount of welding deformation, mm, and taking 0-1 mm as a reference;
the error values of the two formulas (1) and (4) in the above list are less than or equal to 0.05 mm;
the position of a bearing seat hole at the rear end of the tail shaft tube meets the following requirement:
r left-R right-0 … … … … … … … (5)
c＝R－(ξ－y)…………………(6)
d＝R+(ξ－y)…………………(7)
Namely: d-c ═ 2(ξ -y) … … … … … (8)
In the formula: r is the radius of the bearing seat hole, mm;
a, the distance between a point on the inner surface of a bearing seat hole and a steel wire is mm;
b, the distance between the lower point of the inner surface of the bearing seat hole and the steel wire is mm;
y-deflection of the steel wire at the head end (sag), mm;
xi-reserved inverse deformation amount of welding deformation, mm, and 2-4.0 mm is taken;
wherein the error values of the two formulas (5) and (8) are less than or equal to 0.05 mm.
The further improvement lies in that: the positioning of the support arm of the propeller strut is as follows: sampling on site, processing upper and lower grooves of the support arm, positioning the support arm, spot-welding the support arm on the hull, spot-welding the support arm on the stern tube, and welding and fixing the support arm on the hull after the position is determined; the tail shaft tube is fixed specifically as follows: positioning a rib position compound plate on the tail shaft tube, cutting the prepared rib position compound plate into two halves, and clamping and sleeving the two halves on corresponding rib positions of the tail shaft tube; firstly spot-welding the excircle of a compound plate on the rib position at the head part of the tail shaft tube on a rib plate, and then spot-welding the inner hole of the compound plate on the tail shaft tube; spot welding a tail shaft tube support frame on a tail rib position of the tail shaft tube, and spot welding the tail shaft tube on the support frame to prevent the welded tail shaft tube from moving; and spot-welding the multiple plates on the rib position and the tail shaft tube from the tail part to the head part respectively, then welding the multiple plates, welding the excircle of each multiple plate on the rib plate firstly, and welding the inner hole of each multiple plate on the tail shaft tube secondly.
The further improvement lies in that: the installation of the tail shaft tube bearing specifically comprises the following steps: detecting the quality of the bearing, the diameter size, the roundness and the cylindricity of the excircle, and checking that the bearing seat hole is in interference fit with a matched bearing; when the bearing is installed, the surface of the bearing and the surface of the seat hole are cleaned and wiped, and the bearing is slowly pressed into the bearing seat by using the jack.
The further improvement lies in that: the tail shaft installation specifically comprises: checking the processing quality of the tail shaft, cleaning and wiping the bearing holes and the surface of the tail shaft, coating lubricating oil on the bearing neck, slowly loading the tail shaft from the outboard to the tail shaft tube, and detecting the left and right and up and down gaps between the tail shaft and the tail shaft tube and between the propeller strut shaft hub bearing by using a long plug ruler after the tail shaft is installed in place.
The further improvement lies in that: the propeller installation specifically is: checking the matching condition of a propeller hub taper hole and a tail shaft taper body, including the contact area and the propeller pushing axial position; rotating the tail shaft, rotating the key groove of the tail shaft to an upper position, and installing a transmission key; slowly pushing the propeller into the tail shaft, sleeving a nut when the thread of the tail shaft extends out of the rear end of the propeller hub by 3-4 teeth, rotating the nut by using a special wrench, and pushing the taper hole of the propeller hub into the taper body of the tail shaft until the front end face of the propeller hub reaches the specified position on the tail shaft; installing a flow guide cap; and (4) mounting a connecting bolt of the propeller shaft hub and the wear-resistant bushing of the sealing device.
The further improvement lies in that: the first sealing device is specifically installed as follows: the first sealing device is a purchased standard part, the shell of the first sealing device is adjusted to be coaxial with the tail shaft, the fixing bolt is screwed, the wear-resistant bush clamping hoop is locked, and the wear-resistant bush is fixed.
The further improvement lies in that: the coupler is specifically mounted as follows: checking the contact condition of the taper hole of the coupler and the taper body of the tail shaft, rotating the key groove on the tail shaft to the upper part, installing a transmission key, matching with the key groove of the coupler, and detecting by using a clearance gauge; and (4) installing a coupling fastening nut, tightening the fastening nut, detecting by using a clearance gauge, and finally installing an anti-loosening device.
The invention has the beneficial effects that:
1. when the tail shaft tube is installed, the tail shaft tube is firstly positioned and referenced, the deflection of a steel wire is determined, then the tail shaft tube is positioned and fixed, the positioning reference of the tail shaft tube is a theoretical center line of a shaft system, before the tail shaft tube is installed, the steel wire of the theoretical center line of the shaft system is pulled according to the arrangement requirement of the shaft system, the steel wire is a piano wire, the pulling force of the steel wire is 75% of the breaking force of the steel wire, meanwhile, the axis of the shaft system is determined by the steel wire, the deflection is calculated by using a calculation formula, and therefore the deflection caused by the dead weight of the steel wire is eliminated, and the radial dimension error of bearing seat holes at the front end and the rear end of the tail shaft tube is proved to be less than or equal to 0.05mm and the coaxiality error of the bearing seat holes at the front end and the rear end of the tail shaft tube is less than or equal to 0.10mm, so that the positioning accuracy of the tail shaft tube is improved, the error is reduced and the overall stability of a propeller tail shaft system is ensured.
2. After the tail shaft is installed, the long plug ruler is used for detecting the left and right and up and down gaps between the tail shaft and the tail shaft tube and between the propeller strut shaft hub bearing and the propeller strut shaft hub bearing, so that the gap minimization is ensured, and the integral stability of a propeller tail shaft system is ensured.
3. When the coupler is installed, the key groove on the tail shaft is screwed to the upper side, the transmission key is arranged and matched with the key groove of the coupler, the feeler gauge is used for detecting again after the fastening nut is screwed down, the situation that the feeler gauge cannot be inserted is determined, and the overall stability of the propeller tail shaft system is ensured.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic view of the positioning of the stern tube of the present invention.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example one
According to fig. 1, the present embodiment proposes a mounting process of a tail shaft system of an oil-lubricated propeller, comprising the following steps:
installing a tail shaft tube: determining the deflection of a steel wire on the basis of positioning of the tail shaft tube, performing preparation treatment before the installation of the tail shaft tube, and performing tail shaft tube positioning, propeller strut positioning and tail shaft tube fixing;
installing a tail shaft tube bearing: carrying out bearing detection, cleaning and installing a bearing;
mounting a tail shaft: detecting a tail shaft, cleaning and installing the tail shaft, and checking and installing;
installing a tail sealing device: adopting an outsourcing standard component;
mounting a propeller: detecting the matching condition of the propeller and the tail shaft, and installing the propeller into the tail shaft;
installing a first sealing device: the shell of the adjusting head sealing device is coaxial with the tail shaft;
mounting a coupler: and detecting the contact condition of the coupler and the tail shaft, and pressing and fastening the coupler and the tail shaft.
When the tail shaft tube is installed, the tail shaft tube is firstly positioned and referenced, the deflection of a steel wire is determined, then the tail shaft tube is positioned and fixed, the positioning reference of the tail shaft tube is a theoretical center line of a shaft system, before the tail shaft tube is installed, the steel wire of the theoretical center line of the shaft system is pulled according to the arrangement requirement of the shaft system, the steel wire is a piano wire, the pulling force of the steel wire is 75% of the breaking force of the steel wire, meanwhile, the axis of the shaft system is determined by the steel wire, the deflection is calculated by using a calculation formula, and therefore the deflection caused by the dead weight of the steel wire is eliminated, and the radial dimension error of bearing seat holes at the front end and the rear end of the tail shaft tube is proved to be less than or equal to 0.05mm and the coaxiality error of the bearing seat holes at the front end and the rear end of the tail shaft tube is less than or equal to 0.10mm, so that the positioning accuracy of the tail shaft tube is improved, the error is reduced and the overall stability of a propeller tail shaft system is ensured.
Example two
According to the embodiments shown in fig. 1 and 2, the present embodiment provides a mounting process of a tail shaft system of an oil-lubricated propeller, comprising the following steps:
the positioning reference of the tail shaft tube is as follows: the positioning reference of the tail shaft tube is a theoretical center line of a shaft system, a steel wire of the theoretical center line of the shaft system is pulled according to the arrangement requirement of the shaft system before the tail shaft tube is installed, the steel wire adopts a piano wire, and the pulling force of the steel wire is 75% of the breaking force of the steel wire; the relationship between the steel wire diameter and the tensile force is shown in the following table:
the steel wire deflection is determined as follows: the axis of a shafting is determined by adopting a steel wire, the deflection caused by the self weight of the steel wire is eliminated, and the calculation formula is as follows:
in the formula: y-deflection caused by the self weight of the steel wire; mm is
q-the gravity per unit length of steel wire, N/m;
x is the distance from the calculated deflection position to the reference point, m;
l is the distance between the head datum point and the tail datum point (the length of the steel wire between the two target frames), m;
t-the tension or the gravity of an equivalent weight, N;
0.99-correction factor.
The preparation treatment before the installation of the tail shaft tube specifically comprises the following steps: checking the sizes of front and rear bearing seat holes of the tail shaft tube to meet the requirement of on-site finish machining, wherein the cutting allowance of the front bearing seat hole is 0.30-0.50 mm, and the rear bearing seat hole is 0.50-0.80 mm; carrying out tightness test on the tail shaft tube in a workshop, wherein the test pressure is 0.2MPa, and leakage cannot occur; the rib position close to the head end of the stern tube and the corresponding rib position of the tail hull plate are respectively provided with a positioning device for positioning the stern tube; preparing a rib position restoration plate; and opening through holes of the stern tube on the hull plate and the rib plate according to the sample plate.
The positioning of the tail shaft tube is as follows: removing the steel wire from the inside of the engine room or the outside of the hull plate to the outside of the hull plate or the inside of the engine room, extending the stern tube out, and placing the stern tube in the openings on the hull plate and the rib position plate; the axis steel wire passes through the tail shaft tube and is reset; adjusting the axial position of the tail shaft tube, wherein the axial positioning error does not exceed +/-2.0 mm; the radial positions of the front end and the rear end of the tail shaft tube are adjusted by the position adjusting device, so that the tail shaft tube meets the following requirements: see FIG. 2:
the position of a bearing seat hole at the front end of the tail shaft tube meets the following requirement:
r left-R right-0 … … … … … … … (1)
a＝R+(y+ξ)…………………(2)
a＝R－(y+ξ)…………………(3)
Namely: a-b ═ 2(y + ξ) … … … … … (4)
In the formula: r is the radius of the bearing seat hole, mm;
a, the distance between a point on the inner surface of a bearing seat hole and a steel wire is mm;
b, the distance between the lower point of the inner surface of the bearing seat hole and the steel wire is mm;
y-deflection of the steel wire at the head end (sag), mm;
xi is the reversible deformation of reserved welding deformation, and mm is generally 0-1 mm;
the error values of the two formulas (1) and (4) in the above list are less than or equal to 0.05 mm;
the position of a bearing seat hole at the rear end of the tail shaft tube meets the following requirement:
r left-R right-0 … … … … … … … (5)
c＝R－(ξ－y)…………………(6)
d＝R+(ξ－y)…………………(7)
Namely: d-c ═ 2(ξ -y) … … … … … (8)
In the formula: r is the radius of the bearing seat hole, mm;
a, the distance between a point on the inner surface of a bearing seat hole and a steel wire is mm;
b, the distance between the lower point of the inner surface of the bearing seat hole and the steel wire is mm;
y-deflection of the steel wire at the head end (sag), mm;
xi-reserved inverse deformation amount of welding deformation, mm, generally 2-4.0 mm;
wherein the error values of the two formulas (5) and (8) are less than or equal to 0.05 mm.
After the positioning of the tail shaft tube, the following requirements are required to be checked:
1) the radial dimension error of the bearing block holes at the front end and the rear end of the tail shaft tube is less than or equal to 0.05 mm;
2) the coaxiality error of the bearing block holes at the front end and the rear end of the tail shaft tube is less than or equal to 0.10 mm.
When the tail shaft tube is installed, the tail shaft tube is firstly positioned and referenced, the deflection of a steel wire is determined, then the tail shaft tube is positioned and fixed, the positioning reference of the tail shaft tube is a theoretical center line of a shaft system, before the tail shaft tube is installed, the steel wire of the theoretical center line of the shaft system is pulled according to the arrangement requirement of the shaft system, the steel wire is a piano wire, the pulling force of the steel wire is 75% of the breaking force of the steel wire, meanwhile, the axis of the shaft system is determined by the steel wire, the deflection is calculated by using a calculation formula, and therefore the deflection caused by the dead weight of the steel wire is eliminated, and the radial dimension error of bearing seat holes at the front end and the rear end of the tail shaft tube is proved to be less than or equal to 0.05mm and the coaxiality error of the bearing seat holes at the front end and the rear end of the tail shaft tube is less than or equal to 0.10mm, so that the positioning accuracy of the tail shaft tube is improved, the error is reduced and the overall stability of a propeller tail shaft system is ensured.
The positioning of the support arm of the propeller strut is as follows: sampling on site, processing upper and lower grooves of the support arm, positioning the support arm, spot-welding the support arm on the hull, spot-welding the support arm on the stern tube, and welding and fixing the support arm on the hull after the position is determined; the tail shaft tube is fixed specifically as follows: positioning a rib position compound plate on the tail shaft tube, cutting the prepared rib position compound plate into two halves, and clamping and sleeving the two halves on corresponding rib positions of the tail shaft tube; firstly spot-welding the excircle of a compound plate on the rib position at the head part of the tail shaft tube on a rib plate, and then spot-welding the inner hole of the compound plate on the tail shaft tube; spot welding a tail shaft tube support frame on a tail rib position of the tail shaft tube, and spot welding the tail shaft tube on the support frame to prevent the welded tail shaft tube from moving; respectively spot-welding the clad plate on the rib position and the tail shaft tube from the tail part to the head part, continuously checking the coaxiality of the tail shaft tube and a steel wire in the spot welding process, and if the deviation is 0.10mm, correcting and recording; then welding each clad plate according to the following sequence, welding the outer circle of each clad plate on the rib plate firstly, welding the inner hole of each clad plate on the tail shaft tube secondly, and adopting the welding method of symmetrical welding, diagonal welding and welding stopping, which specifically comprises the following steps:
1) firstly, welding a compound plate on a rib position at the tail part of an engine room;
2) except the first rib position upper compound plate at the head end of the tail shaft tube, all rib position upper compound plates are welded from tail to head, the coaxiality of the center line of the tail shaft tube and a steel wire is continuously checked in the welding process, and if the difference is 0.15mm, the correction is required in real time.
3) After the detection meets the requirements, welding the joint of the stern tube and the hull plate, and detecting the coaxiality of the center line of the stern tube and the steel wire while welding, wherein if the out-of-tolerance is 0.20mm, the correction needs to be carried out in real time (if a stern tube clad plate exists, the outer edge of the clad plate is welded on the hull plate firstly, and then the inner edge of the clad plate is welded on the tail pipe).
4) And after finishing the last process and checking that the coaxiality of the tail shaft tube and the steel wire meets the requirements, welding the compound plate on the rib position of the head end of the tail shaft tube.
5) And after welding, detecting the distance from the inner surface of the bearing seat hole of the tail shaft tube to the steel wire, the roundness and cylindricity of the hole and the coaxiality of the holes at two ends, and recording.
The installation of the tail shaft tube bearing specifically comprises the following steps: detecting the quality of the bearing, checking the diameter size, roundness and cylindricity of an excircle, checking that a bearing seat hole is in interference fit with a matched bearing, wherein the interference magnitude is generally 0.01-0.015 mm, and correcting if the interference magnitude does not meet the requirement; when the bearing is installed, the surface of the bearing and the surface of the seat hole are cleaned and wiped, and the bearing is slowly pressed into the bearing seat by the jack without being knocked in by a hammer.
The tail shaft installation specifically comprises: checking the processing quality of the tail shaft, cleaning and wiping the surfaces of each bearing hole and the tail shaft, coating lubricating oil on the bearing neck, slowly loading the lubricating oil into the tail shaft from the outboard to the tail shaft tube, taking effective measures during installation to prevent bending deformation, and detecting the left and right and up and down gaps between the tail shaft and the tail shaft tube and between the propeller strut shaft hub bearing by using a long plug ruler after the tail shaft is installed.
1) The lower clearance is not inserted by a 0.02mm feeler gauge (generally in the range of 600), and the upper clearance is equal to or slightly smaller than the total clearance of the tail shaft and the bearing assembly.
2) The left and right side gaps are within 40-60% of the assembly gap range.
3) The tail shaft rotates flexibly without jamming and abnormal sound.
After the tail shaft is installed, the long plug ruler is used for detecting the left and right and up and down gaps between the tail shaft and the tail shaft tube and between the propeller strut shaft hub bearing and the propeller strut shaft hub bearing, so that the gap minimization is ensured, and the integral stability of a propeller tail shaft system is ensured.
The propeller installation specifically is: checking the matching condition of a propeller hub taper hole and a tail shaft taper body, including the contact area and the propeller pushing axial position; rotating the tail shaft, rotating the key groove of the tail shaft to an upper position, and installing a transmission key, wherein the contact area between the key and the two side surfaces of the key groove of the shaft is not less than 75%, and the contact area between the key and the bottom of the key of the shaft is not less than 40%; slowly pushing the propeller into the tail shaft, sleeving a nut when the thread of the tail shaft extends out of the rear end of the propeller hub by 3-4 teeth, rotating the nut by using a special wrench, and pushing the taper hole of the propeller hub into the taper body of the tail shaft until the front end face of the propeller hub reaches the specified position on the tail shaft; installing a flow guide cap; and (4) mounting a connecting bolt of the propeller shaft hub and the wear-resistant bushing of the sealing device.
The first sealing device is specifically installed as follows: the first sealing device is a purchased standard part, the shell of the first sealing device is adjusted to be coaxial with the tail shaft, the fixing bolt is screwed, the wear-resistant bush clamping hoop is locked, and the wear-resistant bush is fixed.
The coupler is specifically mounted as follows: the contact condition of the taper hole of the inspection shaft coupling and the taper body of the tail shaft accords with the requirement of design drawing, the key groove on the tail shaft is screwed to the upper part, the transmission key is arranged, the contact area of the key and the tail shaft and the two side surfaces of the key groove is not less than 75%, and when the key is matched with the key groove of the shaft coupling, the clearance gauge with the length of 0.02mm on 75% cannot be inserted. The rest part should be 0.08mm clearance gauge which can not be inserted, and the contact area of the key and the bottom surface of the key groove on the tail shaft should be not less than 40 percent; and (3) installing a coupler fastening nut, wherein after the fastening nut is screwed down, on 90% of the circumference of the joint surface of the coupler and the nut, a 0.02mm clearance gauge cannot be inserted, the contact area of the clearance gauge is not less than 75%, and a loosening prevention device is installed.
When the coupler is installed, the key groove on the tail shaft is screwed to the upper side, the transmission key is arranged and matched with the key groove of the coupler, the feeler gauge is used for detecting again after the fastening nut is screwed down, the situation that the feeler gauge cannot be inserted is determined, and the overall stability of the propeller tail shaft system is ensured.
And (4) checking: after the tail shaft system is installed, the radial and end face runout amounts of the rechecking coupler meet the requirements of a design drawing and are recorded; after the quality inspection is qualified, reporting to ship inspection and approval together with the installation of the gear box and the host; after the ship is approved, mooring and sailing tests are carried out.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The mounting process of the oil lubrication propeller tail shaft system is characterized by comprising the following steps:
installing a tail shaft tube: determining the deflection of a steel wire on the basis of positioning of the tail shaft tube, performing preparation treatment before the installation of the tail shaft tube, and performing tail shaft tube positioning, propeller strut positioning and tail shaft tube fixing;
installing a tail shaft tube bearing: carrying out bearing detection, cleaning and installing a bearing;
mounting a tail shaft: detecting a tail shaft, cleaning and installing the tail shaft, and checking and installing;
installing a tail sealing device: adopting an outsourcing standard component;
mounting a propeller: detecting the matching condition of the propeller and the tail shaft, and installing the propeller into the tail shaft;
the first sealing device is installed: the shell of the adjusting head sealing device is coaxial with the tail shaft;
mounting a coupler: and detecting the contact condition of the coupler and the tail shaft, and pressing and fastening the coupler and the tail shaft.
2. The process of installing an oil lubricated propeller tail shaft system of claim 1 wherein: the positioning reference of the tail shaft tube is as follows: the positioning reference of the tail shaft tube is a theoretical center line of a shaft system, a steel wire of the theoretical center line of the shaft system is pulled according to the arrangement requirement of the shaft system before the tail shaft tube is installed, the steel wire adopts a piano wire, and the pulling force of the steel wire is 75% of the breaking force of the steel wire; the steel wire deflection is determined as follows: the axis of a shafting is determined by adopting a steel wire, the deflection caused by the self weight of the steel wire is eliminated, and the calculation formula is as follows:
in the formula: y-deflection caused by the self weight of the steel wire; mm is
q-the gravity per unit length of steel wire, N/m;
x is the distance from the calculated deflection position to the reference point, m;
l is the distance between the head datum point and the tail datum point (the length of the steel wire between the two target frames), m;
t-the tension or the gravity of an equivalent weight, N;
0.99-correction factor.
3. The process of installing an oil lubricated propeller tail shaft system according to claim 2 wherein: the preparation treatment before the installation of the tail shaft tube specifically comprises the following steps: checking the sizes of the front bearing seat hole and the rear bearing seat hole of the tail shaft tube to meet the requirement of on-site finish machining; performing a tightness test on the tail shaft tube in a workshop to determine that leakage cannot occur; the rib position close to the head end of the stern tube and the corresponding rib position of the tail hull plate are respectively provided with a positioning device for positioning the stern tube; preparing rib position compound plates; and opening through holes of the stern tube on the hull plate and the rib plate according to the sample plate.
4. A process of installing an oil lubricated propeller tail shaft system according to claim 3, wherein: the positioning of the tail shaft tube is as follows: removing the steel wire from the inside of the engine room or from the outside of the hull plate to the outside of the hull plate or the inside of the engine room, extending the stern tube out of the engine room, and placing the stern tube into the openings on the hull plate and the rib plate; the axis steel wire passes through the tail shaft tube and is reset; adjusting the axial position of the tail shaft tube; the radial positions of the front end and the rear end of the tail shaft tube are adjusted by the position adjusting device, so that the tail shaft tube meets the following requirements:
the position of a bearing seat hole at the front end of the tail shaft tube meets the following requirement:
r left-R right-0 … … … … … … … (1)
a＝R+(y+ξ)…………………(2)
a＝R－(y+ξ)…………………(3)
Namely: a-b ═ 2(y + ξ) … … … … … (4)
In the formula: r is the radius of the bearing seat hole, mm;
a, the distance between a point on the inner surface of a bearing seat hole and a steel wire is mm;
b, the distance between the lower point of the inner surface of the bearing seat hole and the steel wire is mm;
y-deflection of the steel wire at the head end (sag), mm;
xi-reserved inverse deformation amount of welding deformation, mm, and taking 0-1 mm as a reference;
the error values of the two formulas (1) and (4) in the above list are less than or equal to 0.05 mm;
the position of a bearing seat hole at the rear end of the tail shaft tube meets the following requirement:
r left-R right-0 … … … … … … … (5)
c＝R－(ξ－y)…………………(6)
d＝R+(ξ－y)…………………(7)
Namely: d-c ═ 2(ξ -y) … … … … … (8)
In the formula: r is the radius of the bearing seat hole, mm;
a, the distance between a point on the inner surface of a bearing seat hole and a steel wire is mm;
b, the distance between the lower point of the inner surface of the bearing seat hole and the steel wire is mm;
y-deflection of the steel wire at the head end (sag), mm;
xi-reserved inverse deformation amount of welding deformation, mm, and 2-4.0 mm is taken;
wherein the error values of the two formulas (5) and (8) are less than or equal to 0.05 mm.
5. The process of installing an oil lubricated propeller tail shaft system according to claim 4 wherein: the positioning of the support arm of the propeller strut is as follows: sampling on site, processing upper and lower grooves of the support arm, positioning the support arm, spot-welding the support arm on the hull, spot-welding the support arm on the stern tube, and welding and fixing the support arm on the hull after the position is determined; the tail shaft tube is fixed specifically as follows: positioning a rib position compound plate on the tail shaft tube, cutting the prepared rib position compound plate into two halves, and clamping and sleeving the two halves on corresponding rib positions of the tail shaft tube; firstly spot-welding the excircle of a compound plate on the rib position at the head part of the tail shaft tube on a rib plate, and then spot-welding the inner hole of the compound plate on the tail shaft tube; spot welding a tail shaft tube support frame on a tail rib position of the tail shaft tube, and spot welding the tail shaft tube on the support frame to prevent the welded tail shaft tube from moving; and spot-welding the multiple plates on the rib position and the tail shaft tube from the tail part to the head part respectively, then welding the multiple plates, welding the excircle of each multiple plate on the rib plate firstly, and welding the inner hole of each multiple plate on the tail shaft tube secondly.
6. The process of installing an oil lubricated propeller tail shaft system according to claim 5, wherein: the installation of the tail shaft tube bearing specifically comprises the following steps: detecting the quality of the bearing, the diameter size, the roundness and the cylindricity of the excircle, and checking that the bearing seat hole is in interference fit with a matched bearing; when the bearing is installed, the surface of the bearing and the surface of the seat hole are cleaned and wiped, and the bearing is slowly pressed into the bearing seat by using the jack.
7. The process of installing an oil lubricated propeller tail shaft system according to claim 6, wherein: the tail shaft installation specifically comprises: checking the processing quality of the tail shaft, cleaning and wiping the bearing holes and the surface of the tail shaft, coating lubricating oil on the bearing neck, slowly loading the tail shaft from the outboard to the tail shaft tube, and detecting the left and right and up and down gaps between the tail shaft and the tail shaft tube and between the propeller strut shaft hub bearing by using a long plug ruler after the tail shaft is installed in place.
8. The process of installing an oil lubricated propeller tail shaft system of claim 7 wherein: the propeller installation specifically is: checking the matching condition of a propeller hub taper hole and a tail shaft taper body, including the contact area and the propeller pushing axial position; rotating the tail shaft, rotating the key groove of the tail shaft to an upper position, and installing a transmission key; slowly pushing the propeller into the tail shaft, sleeving a nut when the thread of the tail shaft extends out of the rear end of the propeller hub by 3-4 teeth, rotating the nut by using a special wrench, and pushing the taper hole of the propeller hub into the taper body of the tail shaft until the front end face of the propeller hub reaches the specified position on the tail shaft; installing a flow guide cap; and (4) mounting a connecting bolt of the propeller shaft hub and the wear-resistant bushing of the sealing device.
9. The process of installing an oil lubricated propeller tail shaft system of claim 8 wherein: the first sealing device is specifically installed as follows: the first sealing device is a purchased standard part, the shell of the first sealing device is adjusted to be coaxial with the tail shaft, the fixing bolt is screwed, the wear-resistant bush clamping hoop is locked, and the wear-resistant bush is fixed.
10. The process of installing an oil lubricated propeller tail shaft system of claim 9 wherein: the coupler is specifically mounted as follows: checking the contact condition of the taper hole of the coupler and the taper body of the tail shaft, rotating the key groove on the tail shaft to the upper part, installing a transmission key, matching with the key groove of the coupler, and detecting by using a clearance gauge; and (4) installing a coupling fastening nut, tightening the fastening nut, detecting by using a clearance gauge, and finally installing an anti-loosening device.
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| CN202210227304.6A CN114455029B (en) | 2022-03-08 | 2022-03-08 | Installation process of oil lubrication propeller tail shaft system |
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| CN202210227304.6A CN114455029B (en) | 2022-03-08 | 2022-03-08 | Installation process of oil lubrication propeller tail shaft system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815370A (en) * | 2012-09-04 | 2012-12-12 | 中船桂江造船有限公司 | One-step centering ship shafting mounting method |
| CN106184686A (en) * | 2016-08-01 | 2016-12-07 | 宏华海洋油气装备（江苏）有限公司 | Ship stern pipe mounting process |
| CN106741799A (en) * | 2017-01-09 | 2017-05-31 | 宜昌东江造船有限公司 | Trailing axle and tube peculiar to vessel and installation method |
| CN109878634A (en) * | 2019-03-29 | 2019-06-14 | 浙江国际海运职业技术学院 | Marine shafting bracing wire technique |
-
2022
- 2022-03-08 CN CN202210227304.6A patent/CN114455029B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815370A (en) * | 2012-09-04 | 2012-12-12 | 中船桂江造船有限公司 | One-step centering ship shafting mounting method |
| CN106184686A (en) * | 2016-08-01 | 2016-12-07 | 宏华海洋油气装备（江苏）有限公司 | Ship stern pipe mounting process |
| CN106741799A (en) * | 2017-01-09 | 2017-05-31 | 宜昌东江造船有限公司 | Trailing axle and tube peculiar to vessel and installation method |
| CN109878634A (en) * | 2019-03-29 | 2019-06-14 | 浙江国际海运职业技术学院 | Marine shafting bracing wire technique |
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| CN114455029B (en) | 2024-03-01 |
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