CN106813556B - Adjusting device, measuring device comprising adjusting device and measuring method - Google Patents

Adjusting device, measuring device comprising adjusting device and measuring method Download PDF

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Publication number
CN106813556B
CN106813556B CN201510848478.4A CN201510848478A CN106813556B CN 106813556 B CN106813556 B CN 106813556B CN 201510848478 A CN201510848478 A CN 201510848478A CN 106813556 B CN106813556 B CN 106813556B
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China
Prior art keywords
measuring
hole
steel wire
bearing
rear bearing
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CN201510848478.4A
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Chinese (zh)
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CN106813556A (en
Inventor
赵华锋
杨春霞
孙顾浩
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Shanghai Waigaoqiao Shipbuilding Offshore Engineering Project Management Co ltd
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Shanghai Waigaoqiao Shipbuilding Offshore Engineering Project Management Co ltd
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Priority to CN201510848478.4A priority Critical patent/CN106813556B/en
Publication of CN106813556A publication Critical patent/CN106813556A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/14Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/24Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Abstract

The invention discloses an adjusting device, a measuring device comprising the adjusting device and a measuring method. The adjusting device comprises a connecting element, a supporting element and a fixing assembly which are oppositely arranged. The two ends of the supporting element are provided with waist-shaped holes, and the supporting element is detachably connected between the two connecting elements through the waist-shaped holes; the fixing component comprises a fixing element, two ends of the fixing element are provided with waist-shaped holes, and the fixing element is detachably connected to the middle of the supporting element through the waist-shaped holes. The measuring device is used for measuring the elevation value and the inclination value of the central line of the bearing in the stern shaft tube relative to the central line of the stern shaft tube, and comprises the adjusting device. The measuring method utilizes the measuring device to measure the elevation value and the inclination value of the central line of the bearing in the stern tube relative to the central line of the stern tube. The measuring device has a simple structure, and can accurately and conveniently measure the elevation value and the inclination value by using the adjusting device; the measuring method is simple and low in cost.

Description

Adjusting device, measuring device comprising adjusting device and measuring method
Technical Field
The invention relates to a measuring device, in particular to an adjusting device, a measuring device containing the adjusting device and a measuring method, wherein the measuring device is mainly used for measuring the elevation value and the inclination value of the central line of a bearing in a stern shaft tube relative to the central line of the stern shaft tube.
Background
The modern large ship adopts a short shafting (only one or no intermediate shaft), the shafting consists of a tail shaft, an intermediate shaft, a stern shaft tube, an intermediate bearing, a propeller and related accessories, and the shafting adopts reasonable centering calculation design. The stern shaft tube consists of a front bearing and a rear bearing, and in order to improve the load of the gravity of the propeller on the rear bearing of the stern shaft tube, the center of the front bearing and the center of the rear bearing of the stern shaft tube are designed to have a difference value from the center of a shafting, as shown in a figure (see figure 1). The rear bearing center has an elevation and also a pitch and the front bearing center has an elevation. After the front and rear bearings of the stern tube are manufactured, pressed into the stern tube, transported and finally installed on a ship, the actual elevation and inclination of the centers of the front and rear bearings of the stern tube and the center of the shafting need to be measured to judge whether the front and rear bearings meet the design requirements.
The rear bearing is designed with inclination, which is the characteristic of the shaft system after improvement in recent years, the required inclination and elevation value are not large, and the inspection requirement can be met by a relatively accurate measuring method. The method selected at present is to purchase imported high-precision laser detection instruments for measurement, and the price is high; and although the laser measurement results are visual, whether the electronic equipment with a complex structure generates errors after long-term use or not can not be verified, and whether the measured data are completely accurate or not can not be verified. Even if the instrument is checked regularly, or the professional company carries a high-precision laser detection instrument to measure, the measurement cost is expensive, and tens of thousands of yuan are needed each time, so that the cost is high.
Disclosure of Invention
The invention aims to overcome the defect of high cost in the prior art and provides an adjusting device, a measuring device comprising the adjusting device and a measuring method.
The invention solves the technical problems by the following technical scheme:
an adjustment device, characterized in that it comprises:
two oppositely arranged connecting elements;
the two ends of the supporting element are provided with waist-shaped holes, and the supporting element is detachably connected between the two connecting elements through the waist-shaped holes;
the fixing component comprises a fixing element, wherein waist-shaped holes are formed in two ends of the fixing element, and the fixing element is detachably connected to the middle of the supporting element through the waist-shaped holes.
The support element is detachably connected between the two connection elements through the waist-shaped hole, and the connection positions of the support element and the two connection elements can be adjusted by adjusting the position of the connection piece in the waist-shaped hole, so that the support element can move up and down along the length direction of the support element relative to the connection element. Similarly, the connection position of the fixing element and the supporting element is also adjustable.
Preferably, one end of the supporting element is provided with a protruding part, the protruding part is positioned on one side surface of the supporting element, the protruding part is provided with a threaded hole, and a bolt passes through the threaded hole, penetrates through the protruding part and is abutted against the outer surface of one connecting element.
When the connection positions of the supporting element and the two connecting elements are required to be adjusted, the bolts on the protruding parts are unscrewed, and the positions of the connecting pieces of the supporting element and the two connecting elements in the waist-shaped holes on the supporting element are adjusted. In addition, the bolt penetrates through the protruding part and abuts against the outer surface of the connecting element, so that the connection reliability between the supporting element and the corresponding connecting element is enhanced.
Preferably, the middle part of the supporting element is provided with a connecting part, two threaded holes are arranged on the connecting part at intervals, and the fixing element is detachably connected with the connecting part through the two threaded holes and the waist-shaped holes at the two ends of the fixing element.
The connection portion may be provided in a configuration having a circular cross section, facilitating connection of the support element with the fixing element.
Preferably, the adjusting device further comprises a screw rod, two lug plates are arranged on the connecting portion, a protruding block is arranged on the fixing element, a threaded hole is formed in the protruding block, the protruding block is located between the two lug plates, the screw rod sequentially penetrates through the threaded holes of the two lug plates and the protruding block, and two nuts are arranged at the tail end of the screw rod in a rotating mode.
On the one hand, by tightening the two nuts, an axial force is generated between the two nuts, and the axial force increases the friction force between the two nuts and the screw rod, so that the nuts can be prevented from automatically loosening from the screw rod, and the axial clearance between the screw rod and the two lug plates can be adjusted. On the other hand, when the connection position between the fixing element and the supporting element needs to be adjusted, the screw rod can be rotated to adjust the screwing degree of the screw rod and the threaded hole on the protruding block, and the connection position of the protruding block relative to the supporting element can be adjusted, so that the connection position of the fixing element relative to the supporting element can be adjusted.
Preferably, a first through hole is arranged between the two waist-shaped holes on the supporting element, a second through hole is correspondingly arranged between the two waist-shaped holes on the fixing element, and the first through hole is communicated with the second through hole; the securing assembly further includes:
one end of the insulating sleeve is embedded in the second through hole, the other end of the insulating sleeve extends out of the fixing element, and a third through hole is formed in the middle of the insulating sleeve;
and the clamping block is attached to the other end of the insulating sleeve and covers the second through hole.
The measuring object can pass through the first through hole and the second through hole and penetrate through the third through hole, the insulating sleeve insulates the measuring object and the fixing element, and the clamping block is used for clamping and fixing the object.
Preferably, the clamping block is a metal ring, a threaded hole is formed in the wall surface of the metal ring, and a bolt penetrates through the threaded hole of the metal ring.
The metal ring is selected as the clamping block, so that the structure is simple and the operation is convenient.
Preferably, a first through hole is arranged between the two waist-shaped holes on the supporting element, a second through hole is correspondingly arranged between the two waist-shaped holes on the fixing element, and the first through hole is communicated with the second through hole; two supporting parts are oppositely arranged on the fixing element along the width direction of the fixing element, the two supporting parts are positioned at two sides of the second through hole, and each supporting part is provided with a fourth through hole; the securing assembly further includes:
the round pin penetrates through the two fourth through holes, and a first gap is formed between the axis of the round pin and the center line of the second through hole;
the pulley is sleeved on the round pin and positioned between the two supporting parts, and a second gap is formed between the pulley and each supporting part;
The insulating bearing is embedded in the pulley, and the pulley is sleeved on the round pin;
and the cotter pin is inserted into the tail end of the round pin.
The round pin, the pulley and the cotter are matched, so that the target object passes through the first through hole and the second through hole to be connected with the pulley in a sliding mode. The insulated bearing insulates the target from the pulley.
Preferably, an insulating gasket is arranged in the second gap, the insulating gasket is sleeved on the round pin, and the insulating gasket is attached between the supporting part and the pulley.
The insulating spacer insulates between the support portion and the pulley.
The invention also provides a measuring device for measuring the elevation and inclination values of the center line of the bearing in the stern tube relative to the center line of the stern tube, which is characterized in that the measuring device comprises the adjusting device.
Preferably, the measuring device comprises two adjusting devices, a first through hole is arranged between the two waist-shaped holes on the supporting element, a second through hole is correspondingly arranged between the two waist-shaped holes on the fixing element, and the first through hole is communicated with the second through hole; the two adjusting devices are respectively connected to the left end face and the right end face of the stern shaft tube, the measuring device further comprises a steel wire and a hanging object, the steel wire is located on the center line of the stern shaft tube, one end of the steel wire is fixed to the fixing component included in the fixing device located on the right end face, the hanging object is suspended at the other end of the steel wire, and the steel wire is connected to the fixing component included in the fixing device located on the left end face in a sliding mode.
The suspension mainly applies tension to the steel wire, and for the steel wire with a known diameter, when the steel wire is subjected to the known tension, the deflection of any point on the steel wire can be calculated; and the upper and lower radius values of each point on the inner wall surface of the bearing in the stern shaft tube can be obtained by measurement. The lifting value and the inclination value of the central line of the bearing in the stern shaft tube relative to the central line of the stern shaft tube can be calculated conveniently through conversion by selecting a plurality of points on the inner wall surface of the bearing for measurement and calculating the deflection of the points corresponding to the corresponding points on the steel wire. The elevation value and the inclination value can be accurately measured without a high-precision laser detection instrument, and the cost is low.
Preferably, in the adjusting device located at the right end face, the fixing assembly further includes:
one end of the insulating sleeve is embedded in the second through hole, the other end of the insulating sleeve extends out of the fixing element, a third through hole is formed in the middle of the insulating sleeve, and one end of the steel wire penetrates through the first through hole and the third through hole;
the metal ring is attached to the other end of the insulating sleeve and covered on the second through hole, a threaded hole is formed in the wall surface of the metal ring, a bolt penetrates through the threaded hole of the metal ring, and one end of the steel wire is fastened to the bolt on the metal ring.
Preferably, in the adjusting device located at the left end face, two supporting parts are oppositely arranged on the fixing element along the width direction of the fixing element, the two supporting parts are located at two sides of the second through hole, and each supporting part is provided with a fourth through hole; the securing assembly further includes:
the round pin penetrates through the two fourth through holes, and a first gap is formed between the axis of the round pin and the center line of the second through hole;
the pulley is sleeved on the round pin, a second gap is formed between the pulley and each supporting part, an annular groove is formed in the outer surface of the pulley, the other end of the steel wire penetrates through the first through hole and the second through hole and is clamped in the annular groove, and the steel wire is connected with the pulley in a sliding mode;
the insulating bearing is embedded in the pulley, and the pulley is sleeved on the round pin;
and the cotter pin is inserted into the tail end of the round pin.
The invention also provides a measuring method, which is characterized in that the measuring device is used for measuring the elevation value and the inclination value of the center line of the bearing in the stern tube relative to the center line of the stern tube, a front bearing and a rear bearing are arranged in the stern tube, the front bearing is arranged at the right end part of the stern tube, the rear bearing is arranged at the left end part of the stern tube, the center line of the center of the front end surface and the center of the tail end surface of the front bearing relative to the center line of the stern tube has a first elevation value, the center of the front end surface of the rear bearing relative to the center line of the stern tube has a second elevation value, the center of the front end surface and the center of the tail end surface relative to the center line of the stern tube has an inclination value, and the front end surface of the rear bearing is close to the left end surface of the stern tube, and the front end surface of the front bearing is close to the right end surface of the stern tube;
The measuring method comprises the following steps:
calibrating the position of the steel wire so that the central line of the steel wire and the central line of the stern tube are positioned on the same straight line;
selecting a measuring section of the steel wire, wherein the head end face of the front bearing and the head end face of the rear bearing are both positioned in the measuring section, at least two measuring points are respectively selected on the inner wall surfaces of the front bearing and the rear bearing, and a first measuring point in the rear bearing is positioned in the head end face of the rear bearing;
acquiring corresponding points of the measuring points on the inner wall surface of the front bearing, wherein a first measuring point and a first corresponding point in the front bearing are positioned in a first cross section of the front bearing, a straight line where the first measuring point and the first corresponding point are positioned passes through the center of the first cross section, a second measuring point and a second corresponding point in the front bearing are positioned in a second cross section of the front bearing, and a straight line where the second measuring point and the second corresponding point are positioned passes through the center of the second cross section;
acquiring corresponding points of the measuring points on the inner wall surface of the rear bearing, wherein a first measuring point and a first corresponding point in the rear bearing are positioned in a first cross section of the rear bearing, a straight line where the first measuring point and the first corresponding point are positioned passes through the center of the first cross section, a second measuring point and a second corresponding point in the rear bearing are positioned in a second cross section of the rear bearing, and a straight line where the second measuring point and the second corresponding point are positioned passes through the center of the second cross section;
Respectively calculating deflection values at a first measuring point and a second measuring point in the front bearing and the rear bearing, and respectively measuring distances from the first measuring point, the second measuring point, the first corresponding point and the second corresponding point in the front bearing and the rear bearing to the steel wire;
according to formula K 1 =[A 1 +B 1 -A 2 -B 2 -2×(y A +y B )]Calculating the first lift value, wherein K 1 For the first lift-off value, A 1 And B 1 The distance between the first measuring point and the second measuring point in the front bearing and the steel wire is respectively A 2 And B 2 The distances between the corresponding point of the front bearing and the steel wire and the corresponding point of the front bearing are respectively the first corresponding point and the second corresponding point, and A 1 >A 2 ,B 1 >B 2 ,y A And y B Deflection at a first one of said measuring points and a second one of said measuring points in said front bearing, respectively;
according to formula K 2 =(C 1 -C 2 -2×y C ) 2 calculating the second lift value, wherein K 2 For the second elevation value, C 1 C for the distance from the first measuring point in the rear bearing to the steel wire 2 A distance from the corresponding point of the first rear bearing to the steel wire, and C 1 >C 2 ,y C For deflection at a first of said measurement points in said rear bearing;
according to the formula K= [ (D) 2 +y D )-(C 2 +y C )]/(L 2 -L 1 ) Calculating the slope value, wherein K is the slope value, D 2 For the distance between the corresponding point of the second rear bearing and the steel wire, y D For deflection at the second of said measuring points in said rear bearing, L 1 、L 2 And the distances from the first measuring point and the second measuring point in the rear bearing to one end of the measuring section are respectively.
Preferably, the calibrating the position of the steel wire specifically includes the following steps:
four calibration points are selected at the positions, close to the head end face of the front bearing and the head end face of the rear bearing, on the stern shaft tube respectively, wherein the straight line where two calibration points are located and the straight line where the other two calibration points are located are perpendicularly intersected at an intersection point, and the intersection point is located at the center of the cross section passing through the four calibration points;
the distance from the four calibration points close to the front end face of the front bearing to the steel wire is equal by adjusting the supporting element and the fixing component which are positioned on the right end face of the stern shaft tube, and the distance from the four calibration points close to the front end face of the rear bearing to the steel wire is equal by adjusting the supporting element and the fixing component which are positioned on the left end face of the stern shaft tube.
The distances from the four calibration points close to the head end face of the front bearing to the steel wire are equal, and the fact that one end of the steel wire is located in the center of the right end face of the stern shaft tube is indicated; and the distances from the four calibration points close to the head end face of the rear bearing to the steel wire are equal, which means that the other end of the steel wire is positioned at the center of the left end face of the stern shaft tube. Thus, the steel wire is positioned at the center line of the stern shaft tube, namely, the center line of the steel wire and the center line of the stern shaft tube are positioned on the same straight line.
Preferably, one end of an ohmmeter is connected to the connecting element, the other end is connected to the steel wire, one end of an inside micrometer is abutted to the measuring point in the front bearing, the other end of the inside micrometer moves on the steel wire, when the inside micrometer is positioned on a straight line where the measuring point and the corresponding point are located and the ohmmeter has a reading, the other end of the inside micrometer is in a critical state in contact with the steel wire, and the reading of the inside micrometer is the distance from the measuring point to the steel wire.
The corresponding points in the front bearing and the rear bearing, the calibration points on the stern shaft tube, also measure their distance to the steel wire in the same way.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The invention has the positive progress effects that:
the measuring device is simple in structure, and the lifting value and the inclination value of the central line of the bearing in the stern tube relative to the central line of the stern tube can be accurately and conveniently measured by using the adjusting device; the measuring method is simple and low in cost.
Drawings
FIG. 1 is a schematic diagram of a measuring apparatus according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural diagram along a direction a in fig. 1.
Fig. 3 is a schematic structural view along direction B in fig. 1.
Fig. 4 is a schematic structural view of the connecting element in fig. 1.
Fig. 5 is a schematic view of the structure of the support member in fig. 1.
Fig. 6 is a schematic structural diagram of the portion C in fig. 2.
Fig. 7 is a schematic structural view of the fixing assembly in fig. 6.
Fig. 8 is a schematic structural diagram of the portion D in fig. 2.
Fig. 9 is a schematic structural view of the fixing assembly in fig. 8.
FIG. 10 is a flow chart of lift and tilt value measurements using the measurement device of FIG. 1.
Fig. 11 is a flowchart of step 100 in fig. 10.
Reference numerals illustrate:
1: adjusting device
11: connecting element
111: first connecting part
112: second connecting part
12: support element
121: waist-shaped hole
122: connecting part
123: first through hole
124: threaded hole
125: projection part
126: reinforcing plate
127: ear plate
13: fixing assembly
131: fixing element
132: waist-shaped hole
133: second through hole
134: protruding block
135: insulating sleeve
136: metal ring
14: screw rod
2: adjusting device
21: connecting element
22: support element
221: ear plate
225: projection part
226: reinforcing plate
23: fixing assembly
231: fixing element
232: in the width direction
233: support part
234: protruding block
235: round pin
236: pulley wheel
237: insulated bearing
238: cotter pin
239: insulating gasket
24: screw rod
3: steel wire
4: hanging article
100-107: step (a)
200-202: step (a)
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown.
In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "upper", "lower", "leading", "trailing", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The screw shaft tube is internally provided with a front bearing and a rear bearing, the front bearing is arranged at the right end part of the screw shaft tube, the rear bearing is arranged at the left end part of the screw shaft tube, the center line of the center of the head end surface and the center of the tail end surface of the front bearing are provided with a first lifting value relative to the center line of the screw shaft tube, the center of the head end surface of the rear bearing is provided with a second lifting value relative to the center line of the screw shaft tube, the center line of the center of the head end surface and the center of the tail end surface are provided with a slope value relative to the center line of the screw shaft tube, the head end surface of the rear bearing is close to the left end surface of the screw shaft tube, and the head end surface of the front bearing is close to the right end surface of the screw shaft tube.
As shown in fig. 1, the measuring device for measuring the first elevation value, the second elevation value and the inclination value comprises an adjusting device 1 positioned on the right end face of the stern tube and an adjusting device 2 positioned on the left end face of the stern tube; the measuring device further comprises a wire 3 and a suspension 4. Wherein, adjusting device 2 and adjusting device 1 connect respectively in the left end face of stern tube, right-hand member face, steel wire 3 is located the central line of stern tube, the one end of steel wire 3 is fixed in the adjusting device 1 that is located the right-hand member face, and the other end hangs and is equipped with suspension 4, and steel wire 3 sliding connection is in the adjusting device 2 that is located the left end face.
The hanging object 4 mainly applies tension to the steel wire 3, and for the steel wire 3 with a known diameter, when the steel wire 3 is subjected to the known tension, the deflection of any point on the steel wire 3 can be calculated; and the upper and lower radius values of each point on the inner wall surface of the bearing in the stern shaft tube can be obtained by measurement. The first elevation value, the second elevation value and the inclination value can be calculated more conveniently by selecting a plurality of points on the inner wall surfaces of the front bearing and the rear bearing for measurement and calculating the deflection of the points corresponding to the corresponding points on the steel wire 3 through conversion. The elevation value and the inclination value can be accurately measured without a high-precision laser detection instrument, and the cost is low.
As shown in fig. 1 and 2, the adjusting device 1 comprises two oppositely disposed connecting elements 11, a supporting element 12 and a fixing assembly 13. The two connecting elements 11 are connected to the right end face of the stern shaft tube, the supporting element 12 is detachably connected between the two connecting elements 11, the fixing assembly 13 comprises a fixing element 131, and the fixing element 131 is detachably connected to the middle part of the supporting element 12.
As shown in fig. 3, each connection element 11 has a first connection portion 111 and a second connection portion 112. Wherein, the first connecting part 111 is provided with a threaded hole, and the first connecting part 111 is detachably connected with the supporting element 12 in fig. 1 through the threaded hole; two ends of the second connecting part 112 are provided with two waist-shaped holes, and the second connecting part 112 is connected to an oil seal mounting screw hole on the right end surface of the stern tube through the two waist-shaped holes. The connection position between the second connection part 112 and the right end surface of the stern shaft tube is designed into a waist-shaped hole, so that the stern shaft tube can be suitable for the stern shaft tubes with different specifications.
As shown in fig. 2 and 4, the two ends of the supporting element 12 are provided with waist-shaped holes 121, the middle of the supporting element 12 is provided with a connecting part 122, the center of the connecting part 122 is provided with a first through hole 123, the connecting part 122 is provided with two threaded holes 124, and the two threaded holes are positioned at two sides of the first through hole 123. The fixing element 131 has waist-shaped holes 132 at both ends, and the fixing element 131 is detachably connected to the connecting portion 122 of the supporting element 12 through the two waist-shaped holes 132 and the two threaded holes 124. The fixing member 131 has a second through hole 133 at a middle portion thereof, and the first through hole 123 communicates with the second through hole 133.
The supporting element 12 is detachably connected between the two connecting elements 11 in fig. 1 through the waist-shaped hole 121, and the connecting position of the supporting element 12 and the two connecting elements 121 can be adjusted by adjusting the position of the connecting bolt in the waist-shaped hole 121, so that the supporting element 12 can move up and down along the length direction of the supporting element 12 relative to the connecting element 121. Similarly, the connection position of the fixing element 131 to the support element 12 is also adjustable.
As shown in fig. 1 and 4, an end portion of the supporting element 12 has a protruding portion 125, the protruding portion 125 is located on one side surface of the supporting element 12, a threaded hole is formed in the protruding portion 125, and a bolt passes through the threaded hole and is disposed on the protruding portion 125 and abuts against an outer surface of one of the connecting elements 11.
When the connection positions of the support element 12 and the two connection elements 11 need to be adjusted, the bolts on the protruding parts 125 are unscrewed, and the positions of the connection bolts of the support element 12 and the two connection elements 11 in the waist-shaped holes 121 on the support element 12 can be adjusted. In addition, the bolts on the protrusions 125 penetrate through the protrusions 125 and abut against the outer surface of the connection element 11, so that the connection reliability between the support element 12 and the corresponding connection element 11 is enhanced.
In this embodiment, as shown in fig. 1, two reinforcing plates 126 are disposed on the side of the supporting element 12 where the protruding portion 125 is disposed at intervals, and the two reinforcing plates 126 are mainly used for increasing the strength of the supporting element 12.
As shown in fig. 5, the adjusting device 1 further includes a screw rod 14, two ear plates 127 are disposed on the connecting portion 122, a protruding block 134 is disposed on the fixing element 131, a threaded hole is disposed on the protruding block 134, the protruding block 134 is located between the two ear plates 127, the screw rod 14 sequentially penetrates through the threaded holes of the two ear plates 127 and the protruding block 134, and two nuts are screwed at the end of the screw rod 14.
On the one hand, after the nuts are tightened, an axial force is generated between the nuts, and the axial force increases the friction between the nuts and the screw 14, so that the nuts can be prevented from being automatically loosened from the screw 14, and the axial clearance between the screw 14 and the lug plates 127 can be adjusted. On the other hand, when the connection position between the fixing element 131 and the supporting element 12 needs to be adjusted, the connection position of the protruding block 134 relative to the supporting element 12 can also be adjusted by rotating the screw 14, so as to adjust the connection position of the fixing element 131 relative to the supporting element 12.
As shown in fig. 6, the fixing assembly 13 further includes an insulating sleeve 135 and a clamping block. One end of the insulating sleeve 135 is embedded in the second through hole 133 on the fixing element 131 in fig. 5, the other end extends out of the fixing element 131, a third through hole is provided in the middle of the insulating sleeve 135, and the other end of the steel wire 3 in fig. 1 passes through the first through hole 123 in fig. 4 and the second through hole 133 in fig. 5. The clamping block is attached to the other end of the insulating sleeve 135 and covers the second through hole 133.
In this embodiment, as shown in fig. 6, the clamping block is a metal ring 136. The metal ring 136 is attached to the insulating sleeve 135 and covers the second through hole 133, a threaded hole is formed in a wall surface of the metal ring 136, a bolt is inserted into the threaded hole of the metal ring 136, and one end of the steel wire 3 in fig. 1 is fastened to the bolt on the metal ring 136.
The metal ring 136 mainly serves to clamp and fix one end of the wire 3.
As shown in fig. 7 and 8, the adjusting device 2 comprises two oppositely disposed connecting elements 21, a supporting element 22, a fixing assembly 23 and a screw 24, the fixing assembly 23 also comprising a fixing element 231. The adjusting device 2 is essentially identical to the adjusting device 1 in terms of its structure, with the only difference that the fixing assembly is of a different structure. The structure of the connecting element 21, the supporting element 22 is identical to the structure of the connecting element 11, the supporting element 12 in the adjusting device 1. Namely, two ends of the supporting element 22 are provided with waist-shaped holes, the middle of the supporting element 22 is provided with a connecting part, the center of the connecting part is provided with a first through hole, the connecting part is provided with two threaded holes, the two threaded holes are positioned at two sides of the first through hole, and two reinforcing plates 226 are arranged at intervals on one side of the supporting element 22, on which the protruding parts 225 are arranged, as shown in fig. 1. The two ends of the fixing element 231 are provided with waist-shaped holes, and the fixing element 231 is detachably connected to the connecting part of the supporting element 22 through the two waist-shaped holes and the two threaded holes on the supporting element 22. The fixing member 231 is provided at a central portion thereof with a second through hole, and the first through hole of the supporting member 22 is communicated with the second through hole of the fixing member 231. The connecting part of the supporting element 22 is provided with two ear plates 221, the fixing element 231 is provided with a protruding block 234, the protruding block 234 is provided with a threaded hole, the protruding block 234 is positioned between the two ear plates 221, the screw rod 24 sequentially penetrates through the threaded holes of the two ear plates 221 and the protruding block 234, and the tail end of the screw rod 24 is provided with two nuts in a rotating mode.
As shown in fig. 7 to 9, two supporting portions 233 are oppositely disposed on the fixing element 231 along the width direction 232 of the fixing element 231, the two supporting portions 233 are located at two sides of the second through hole on the fixing element 231, each supporting portion 233 has a fourth through hole, and the protruding block 234 is located between the two supporting portions 233. As shown in fig. 8 and 9, the securing assembly 23 further includes a round pin 235, a pulley 236, an insulated bearing 237, and a cotter pin 238. Wherein, the round pin 235 is inserted into the two fourth through holes, and a first gap is formed between the axis of the round pin 235 and the center line of the second through hole of the fixing element 231; the pulley 236 is sleeved on the round pin 235, the pulley 236 is positioned between the two supporting parts 233, a second gap is formed between the pulley 236 and each supporting part 233, the outer surface of the pulley 236 is provided with an annular groove, the other end of the steel wire 3 in fig. 1 penetrates through the first through hole of the supporting element 22 and the second through hole of the fixing element 231 and is clamped in the annular groove, and the steel wire 3 in fig. 1 is connected with the pulley 236 in a sliding manner; the insulating bearing 237 is embedded in the pulley 236, and the pulley 236 is sleeved on the round pin 235; cotter pin 238 is inserted at the end of round pin 235.
In the present embodiment, as shown in fig. 8 and 9, an insulating spacer 239 is disposed in the second gap, the insulating spacer 239 is sleeved on the round pin 235, and the insulating spacer 239 is attached between the supporting portion 233 and the pulley 236.
The cooperation of the round pin 235, the pulley 236 and the cotter pin 238 allows the other end of the wire 3 to pass through the first through hole of the supporting member 22, the second through hole of the fixing member 231 and to be caught in the annular groove. The insulation bearing 237 insulates the other end of the wire 3 from the pulley 236. The insulating washer 239 insulates the other end of the supporting portion wire 3 from the supporting portion 233 and the pulley.
In the present embodiment, one end of the wire 3 is fixed to the metal ring 136 in the adjusting device 1, and the other end is suspended with the hanger 4 and slidably provided in the 236. When the measurement is carried out, the steel wire 3 needs to be ensured to be positioned at the center line of the stern shaft tube; before the measurement, it is necessary to calibrate whether the wire 3 is located at the centre line of the stern tube. If not, the positions of the steel wires 3 relative to the central line of the stern shaft tube along the vertical offset direction of the central line can be adjusted by adjusting the connection positions of the supporting element 12 and the two connecting elements 11 and the connection positions of the supporting element 22 and the two connecting elements 21; by adjusting the axial distance of the screw rods 14, 24, the position of the steel wire 3 relative to the centerline of the stern shaft tube in the left-right offset direction of the centerline can be adjusted. Thereby, it is ensured that the wire 3 is located at the centre line of the stern tube.
As shown in fig. 10, the measuring method for measuring the first elevation value, the second elevation value, and the inclination value by using the measuring apparatus of fig. 1 includes the steps of:
step 100, calibrating the position of the steel wire 3 so that the central line of the steel wire 3 and the central line of the stern shaft tube are positioned on the same straight line;
step 101, selecting a measuring section of a steel wire 3, wherein the head end surface of the front bearing and the head end surface of the rear bearing are both positioned in the measuring section, two measuring points are respectively selected on the inner wall surfaces of the front bearing and the rear bearing, and the first measuring point in the rear bearing is positioned in the head end surface of the rear bearing;
102, acquiring corresponding points of the measuring points on the inner wall surface of the front bearing, wherein a first measuring point and a first corresponding point in the front bearing are positioned in a first cross section of the front bearing, a straight line of the first measuring point and the first corresponding point passes through the center of the first cross section, a second measuring point and a second corresponding point in the front bearing are positioned in a second cross section of the front bearing, and a straight line of the second measuring point and the second corresponding point passes through the center of the second cross section;
Step 103, obtaining corresponding points of the measuring points on the inner wall surface of the rear bearing, wherein a first measuring point and a first corresponding point in the rear bearing are positioned in a first cross section of the rear bearing, a straight line of the first measuring point and the first corresponding point passes through the center of the first cross section, a second measuring point and a second corresponding point in the rear bearing are positioned in a second cross section of the rear bearing, and a straight line of the second measuring point and the second corresponding point passes through the center of the second cross section;
104, respectively calculating deflection values at a first measuring point and a second measuring point in the front bearing and the rear bearing, and respectively measuring distances from the first measuring point, the second measuring point, the first corresponding point and the second corresponding point in the front bearing and the rear bearing to the steel wire 3;
step 105, according to formula K 1 =[A 1 +B 1 -A 2 -B 2 -2×(y A +y B )]Calculating the first lift value, wherein K 1 For the first lift-off value, A 1 And B 1 The distance between the first measuring point and the second measuring point in the front bearing and the steel wire 3 is respectively A 2 And B 2 The distance between the corresponding point of the front bearing and the steel wire 3 and the corresponding point of the front bearing are respectively, and A 1 >A 2 ,B 1 >B 2 ,y A And y B Deflection at a first one of said measuring points and a second one of said measuring points in said front bearing, respectively;
step 106, according to formula K 2 =(C 1 -C 2 -2×y C ) 2 calculating the second lift value, wherein K 2 For the second elevation value, C 1 C for the distance from the first of said measuring points in said rear bearing to the wire 3 2 A distance from the corresponding point of the first one of the rear bearings to the steel wire 3, and C 1 >C 2 ,y C For deflection at a first of said measurement points in said rear bearing;
step 107, according to the formula k= [ (D) 2 +y D )-(C 2 +y C )]/(L 2 -L 1 ) Calculating the slope value, wherein K is the slope value, D 2 For the rear bearingThe distance, y, from the second of said corresponding points to the wire 3 D For deflection at the second of said measuring points in said rear bearing, L 1 、L 2 And the distances from the first measuring point and the second measuring point in the rear bearing to one end of the measuring section are respectively.
In this embodiment, the assurance that the centerline of the steel wire 3 and the centerline of the stern tube are on the same line in step 100 is the basis for measuring the first elevation value, the second elevation value and the inclination value, which must be calibrated before the measurement can be performed.
In step 101, the first measuring point in the rear bearing is located in the head end surface of the rear bearing, so that the second lifting value is the second lifting value according to the lifting value of the center of the straight line where the first measuring point and the first corresponding point are located relative to the center line of the stern tube.
In other embodiments, two or more measurement points may be selected from the front bearing and the rear bearing, and the measurement error is reduced and the accuracy of measurement is improved by multiple measurements.
In step 104, according to the deflection calculation formula y=ql i (L-L i ) And (2) calculating deflection at the first measuring point and the second measuring point in the front bearing and the rear bearing respectively. Wherein y is deflection; q is the uniform load of the steel wire 3, and represents the weight of the steel wire 3 in unit length; l is the length of the measuring section steel wire 3; l (L) i A distance from the measuring point to the end point of the measuring section; t is the tensile force applied to the wire 3, and in this embodiment T is the weight of the hanger 4.
In step 105, the first elevation value is an average value of elevation values of centers of a first measuring point and a straight line where the first corresponding point is located, and centers of a second measuring point and a straight line where the second corresponding point is located in the front bearing with respect to a center line of the stern tube.
In step 107, the inclination value is a tangent value of the raising angle of the center line of the rear bearing relative to the center line of the stern shaft tube, and is known from the geometric relationshipA distance D from the center line of the rear bearing through the second measuring point 2 +y D Distance C from the first measurement point to the center line of the rear bearing 2 +y C Is the difference (D) 2 +y D )-(C 2 +y C ) Distance L between the first and second measuring points 2 -L 1 Is calculated.
In this embodiment, as shown in fig. 11, the calibration of the position of the steel wire 3 in step 100 specifically includes the steps of:
step 200, respectively selecting four calibration points on the stern tube near the head end face of the front bearing and the head end face of the rear bearing, wherein the straight line where two of the calibration points are located and the straight line where the other two of the calibration points are located are vertically intersected at an intersection point, and the intersection point is located at the center of the cross section passing through the four calibration points;
step 201, adjusting the supporting element 12 and the fixing component 13 positioned on the right end face of the stern shaft tube to make the distances from the four calibration points close to the head end face of the front bearing to the steel wire 3 equal;
step 202, adjusting the support element 22 and the fixing assembly 23 positioned on the left end face of the stern shaft tube to make the distances from the four calibration points near the front end face of the rear bearing to the steel wire 3 equal.
In step 201 and step 202, distances from the four calibration points near the head end face of the front bearing to the steel wire 3 are equal, which means that one end of the steel wire 3 is located at the center of the right end face of the stern shaft tube; the distances from the four calibration points close to the head end face of the rear bearing to the steel wire 3 are equal, and the other end of the steel wire 3 is located in the center of the left end face of the stern tube. Thus, the wire 3 is located at the centerline of the stern tube, i.e. the centerline of the wire is located on the same line as the centerline of the stern tube.
In this embodiment, one end of an ohmmeter is connected to the connecting element 11, the other end is connected to the steel wire 3, one end of an inside micrometer is abutted to the measuring point in the front bearing, the other end of the inside micrometer moves on the steel wire 3, when the inside micrometer is located the measuring point is located in a straight line with the corresponding point and the ohmmeter has a reading, the other end of the inside micrometer is in a critical state in contact with the steel wire 3, and the reading of the inside micrometer is the distance from the measuring point to the steel wire 3.
The measuring points in the rear bearing, the corresponding points in the front and rear bearings, the calibration points on the stern shaft tube also measure their distance to the steel wire 3 in the same way. When measuring the distance between the measuring point and the corresponding point in the rear bearing and the wire 3, one end of the ohmmeter is connected to the connecting element 21 and the other end is connected to the wire 3.
The steel wires 3 with different diameters are replaced, the hanging objects 4 with different masses are correspondingly replaced, the measurement and calculation are carried out again according to the steps 100 to 107, and after repeated measurement and calculation for a plurality of times, the obviously inconsistent measurement results are removed, so that the measurement accuracy can be improved.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.

Claims (13)

1. An adjusting device for a measuring device for measuring a rise and a slope of a centerline of a bearing in a stern tube relative to the centerline of the stern tube, comprising:
two oppositely arranged connecting elements;
the two ends of the supporting element are provided with waist-shaped holes, and the supporting element is detachably connected between the two connecting elements through the waist-shaped holes;
the fixing component comprises a fixing element, wherein waist-shaped holes are formed in two ends of the fixing element, and the fixing element is detachably connected to the middle part of the supporting element through the waist-shaped holes;
One end of the supporting element is provided with a protruding part, the protruding part is positioned on one side surface of the supporting element, the protruding part is provided with a threaded hole, and a bolt passes through the protruding part through the threaded hole and is abutted against the outer surface of one connecting element;
the middle part of the supporting element is provided with a connecting part, two threaded holes are formed in the connecting part at intervals, and the fixing element is detachably connected to the connecting part through the two threaded holes and waist-shaped holes at two ends of the fixing element.
2. The adjusting device according to claim 1, further comprising a screw rod, wherein two lug plates are arranged on the connecting portion, a protruding block is arranged on the fixing element, a threaded hole is formed in the protruding block, the protruding block is located between the two lug plates, the screw rod sequentially penetrates through the threaded holes of the two lug plates and the protruding block, and two nuts are arranged at the tail end of the screw rod in a screwed mode.
3. The adjusting device according to claim 1 or 2, wherein a first through hole is arranged between the two waist-shaped holes on the supporting element, a second through hole is correspondingly arranged between the two waist-shaped holes on the fixing element, and the first through hole is communicated with the second through hole; the securing assembly further includes:
One end of the insulating sleeve is embedded in the second through hole, the other end of the insulating sleeve extends out of the fixing element, and a third through hole is formed in the middle of the insulating sleeve;
and the clamping block is attached to the other end of the insulating sleeve and covers the second through hole.
4. An adjustment device as claimed in claim 3, characterized in that the clamping block is a metal ring, the wall surface of which is provided with a threaded hole through which a bolt is arranged.
5. The adjusting device according to claim 1 or 2, wherein a first through hole is arranged between the two waist-shaped holes on the supporting element, a second through hole is correspondingly arranged between the two waist-shaped holes on the fixing element, and the first through hole is communicated with the second through hole; two supporting parts are oppositely arranged on the fixing element along the width direction of the fixing element, the two supporting parts are positioned at two sides of the second through hole, and each supporting part is provided with a fourth through hole; the securing assembly further includes:
the round pin penetrates through the two fourth through holes, and a first gap is formed between the axis of the round pin and the center line of the second through hole;
The pulley is sleeved on the round pin and positioned between the two supporting parts, and a second gap is formed between the pulley and each supporting part;
the insulating bearing is embedded in the pulley, and the pulley is sleeved on the round pin;
and the cotter pin is inserted into the tail end of the round pin.
6. The adjusting device of claim 5, wherein an insulating spacer is disposed in the second gap, the insulating spacer is sleeved on the round pin, and the insulating spacer is attached between the supporting portion and the pulley.
7. A measuring device for measuring the elevation and inclination of the centre line of a bearing in a stern tube relative to the centre line of the stern tube, characterized in that the measuring device comprises an adjusting device according to claim 1.
8. The measuring device according to claim 7, wherein the measuring device comprises two adjusting devices, a first through hole is arranged between two waist-shaped holes on the supporting element, a second through hole is correspondingly arranged between two waist-shaped holes on the fixing element, and the first through hole is communicated with the second through hole; the two adjusting devices are respectively connected to the left end face and the right end face of the stern shaft tube, the measuring device further comprises a steel wire and a hanging object, the steel wire is located on the center line of the stern shaft tube, one end of the steel wire is fixed to the fixing component included in the adjusting device located on the right end face, the hanging object is suspended at the other end of the steel wire, and the steel wire is connected to the fixing component included in the adjusting device located on the left end face in a sliding mode.
9. The measuring device of claim 8, wherein in the adjusting device at the right end face, the fixing assembly further comprises:
one end of the insulating sleeve is embedded in the second through hole, the other end of the insulating sleeve extends out of the fixing element, a third through hole is formed in the middle of the insulating sleeve, and one end of the steel wire penetrates through the first through hole and the third through hole;
the metal ring is attached to the other end of the insulating sleeve and covered on the second through hole, a threaded hole is formed in the wall surface of the metal ring, a bolt penetrates through the threaded hole of the metal ring, and one end of the steel wire is fastened to the bolt on the metal ring.
10. The measuring device according to claim 8, wherein in the adjusting device located at the left end face, two supporting portions are oppositely arranged on the fixing element along the width direction of the fixing element, the two supporting portions are located at two sides of the second through hole, and each supporting portion is provided with a fourth through hole; the securing assembly further includes:
the round pin penetrates through the two fourth through holes, and a first gap is formed between the axis of the round pin and the center line of the second through hole;
The pulley is sleeved on the round pin, a second gap is formed between the pulley and each supporting part, an annular groove is formed in the outer surface of the pulley, the other end of the steel wire penetrates through the first through hole and the second through hole and is clamped in the annular groove, and the steel wire is connected with the pulley in a sliding mode;
the insulating bearing is embedded in the pulley, and the pulley is sleeved on the round pin;
and the cotter pin is inserted into the tail end of the round pin.
11. A measuring method, characterized in that the measuring device according to claim 8 is used for measuring the elevation and inclination of the center line of the bearing in the stern tube relative to the center line of the stern tube, a front bearing and a rear bearing are arranged in the stern tube, the front bearing is arranged at the right end part of the stern tube, the rear bearing is arranged at the left end part of the stern tube, the center line of the center of the front end surface and the center of the tail end surface of the front bearing has a first elevation value relative to the center line of the stern tube, the center of the front end surface of the rear bearing has a second elevation value relative to the center line of the stern tube, the center of the front end surface and the center of the tail end surface have an inclination value relative to the center line of the stern tube, and the front end surface of the rear bearing is close to the left end surface of the stern tube, and the front end surface of the front bearing is close to the right end surface of the stern tube;
The measuring method comprises the following steps:
calibrating the position of the steel wire so that the central line of the steel wire and the central line of the stern tube are positioned on the same straight line;
selecting a measuring section of the steel wire, wherein the head end face of the front bearing and the head end face of the rear bearing are both positioned in the measuring section, at least two measuring points are respectively selected on the inner wall surfaces of the front bearing and the rear bearing, and a first measuring point in the rear bearing is positioned in the head end face of the rear bearing;
acquiring corresponding points of the measuring points on the inner wall surface of the front bearing, wherein a first measuring point and a first corresponding point in the front bearing are positioned in a first cross section of the front bearing, a straight line where the first measuring point and the first corresponding point are positioned passes through the center of the first cross section, a second measuring point and a second corresponding point in the front bearing are positioned in a second cross section of the front bearing, and a straight line where the second measuring point and the second corresponding point are positioned passes through the center of the second cross section;
acquiring corresponding points of the measuring points on the inner wall surface of the rear bearing, wherein a first measuring point and a first corresponding point in the rear bearing are positioned in a first cross section of the rear bearing, a straight line where the first measuring point and the first corresponding point are positioned passes through the center of the first cross section, a second measuring point and a second corresponding point in the rear bearing are positioned in a second cross section of the rear bearing, and a straight line where the second measuring point and the second corresponding point are positioned passes through the center of the second cross section;
Respectively calculating deflection values at a first measuring point and a second measuring point in the front bearing and the rear bearing, and respectively measuring distances from the first measuring point, the second measuring point, the first corresponding point and the second corresponding point in the front bearing and the rear bearing to the steel wire;
according to formula K 1 =[A 1 + B 1 -A 2 -B 2 -2×(y A +y B )]Calculating the first lift value, wherein K 1 For the first lift-off value, A 1 And B 1 The distance between the first measuring point and the second measuring point in the front bearing and the steel wire is respectively A 2 And B 2 The distances between the corresponding point of the front bearing and the steel wire and the corresponding point of the front bearing are respectively the first corresponding point and the second corresponding point, and A 1 > A 2 ,B 1 > B 2 ,y A And y B Deflection at a first one of said measuring points and a second one of said measuring points in said front bearing, respectively;
according to formula K 2 =(C 1 -C 2 -2×y C ) 2 calculating the second lift value, wherein K 2 For the second elevation value, C 1 C for the distance from the first measuring point in the rear bearing to the steel wire 2 A distance from the corresponding point of the first rear bearing to the steel wire, and C 1 > C 2 ,y C For deflection at a first of said measurement points in said rear bearing;
according to the formula K= [ (D) 2 +y D )- (C 2 +y C )]/(L 2 -L 1 ) Calculating the slope value, wherein K is the slope value, D 2 For the distance between the corresponding point of the second rear bearing and the steel wire, y D For deflection at the second of said measuring points in said rear bearing, L 1 、L 2 And the distances from the first measuring point and the second measuring point in the rear bearing to one end of the measuring section are respectively.
12. The method of measuring of claim 11, wherein calibrating the position of the wire comprises the steps of:
four calibration points are selected at the positions, close to the head end face of the front bearing and the head end face of the rear bearing, on the stern shaft tube respectively, wherein the straight line where two calibration points are located and the straight line where the other two calibration points are located are perpendicularly intersected at an intersection point, and the intersection point is located at the center of the cross section passing through the four calibration points;
the distance from the four calibration points close to the front end face of the front bearing to the steel wire is equal by adjusting the supporting element and the fixing component which are positioned on the right end face of the stern shaft tube, and the distance from the four calibration points close to the front end face of the rear bearing to the steel wire is equal by adjusting the supporting element and the fixing component which are positioned on the left end face of the stern shaft tube.
13. The measuring method of claim 11, wherein one end of an ohmmeter is connected to the connecting element, the other end is connected to the steel wire, one end of an inside micrometer is abutted against the measuring point in the front bearing, the other end of the inside micrometer moves on the steel wire, and when the inside micrometer is positioned on a straight line where the measuring point and the corresponding point are located and the ohmmeter has a reading, the other end of the inside micrometer is in a critical state of contact with the steel wire, and the reading of the inside micrometer is the distance from the measuring point to the steel wire.
CN201510848478.4A 2015-11-27 2015-11-27 Adjusting device, measuring device comprising adjusting device and measuring method Active CN106813556B (en)

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Publication number Priority date Publication date Assignee Title
CN107478140B (en) * 2017-09-26 2020-01-10 上海东鼎钢结构有限公司 Machining detection method for ensuring normal operation of stern shaft tube and bearing thereof
CN111678499B (en) * 2020-06-29 2022-02-22 沪东中华造船(集团)有限公司 Method for measuring double slopes of rear bearing of stern tube

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CN1318487A (en) * 2001-06-12 2001-10-24 西南交通大学 Automatic geometric parameter measuring equipment for wheel pair of railroad carriage
CN102294387A (en) * 2010-06-17 2011-12-28 第一高周波工业株式会社 Metal tube bending processing device and method
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
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