Rudder system boring installation coaxiality verification device and operation method

Abstract

The invention belongs to the field of ship manufacturing, and discloses a rudder system boring installation coaxiality verification device which can complete determination of an assembly reference axis of a shaft system to rudder system boring without excessive manpower intervention and almost no technical requirement, and comprises a verification assembly which comprises a fixed part and a rotating part which are coupled with each other, the fixed part is provided with at least three radial supporting legs extending in the radial direction of a rudder system bore hole, the rotating part is arranged in the axial direction of the rudder system bore hole and provided with two dial indicators, the measuring direction of the dial indicators is the radial direction of the rudder system bore hole, and the two dial indicators are distributed in the axial direction of the rudder system bore hole at intervals. When the fixed part is arranged in the rudder system boring hole through the radial supporting legs, the rotating part rotates to enable the dial indicator to measure the inner wall of the whole circumference of the rudder system boring hole. The invention further discloses an operation method of the rudder system boring installation coaxiality verification device.

Description

Technical Field

[0001] The invention belongs to the field of shipbuilding, and in particular relates to a rudder system boring hole installation coaxiality verification device and an operation method. Background Art

[0002] like Figure 1 As shown in the figure, in the field of shipbuilding, the ship's rudder system is assembled in the rudder system bore hole (80cm-120cm) reserved in the hull through the shaft system, so the shaft system has a very high assembly accuracy to the rudder system bore hole to ensure the ship's navigation performance, maneuverability and safety. In order to achieve a very high assembly accuracy of the shaft system to the rudder system bore hole, it is necessary to make the assembly reference axis of the shaft system and the rudder system bore hole have a very high coaxiality.

[0003] At present, the method to achieve higher coaxiality is for a skilled worker to hold a dial indicator, insert the dial indicator into the rudder system bore, and use the dial indicator to measure the inner wall of the rudder system bore at multiple different positions. Then, the position with the highest coaxiality is obtained through the fluctuation difference of the data obtained at multiple positions as the assembly reference axis.

[0004] However, in this process, skilled workers are required to have very rich measurement experience and to hold the dial indicator stably to ensure the accuracy of each measurement data. However, due to fatigue and personal factors, the accuracy of the measurement data is difficult to guarantee in actual measurement. Moreover, the operation requires high technical skills, so the labor cost is also high. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a rudder system boring hole installation coaxiality verification device and operation method, which can complete the determination of the assembly reference axis of the shaft system to the rudder system boring hole without excessive human intervention and almost no technical requirements.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A rudder system boring hole installation coaxiality verification device is characterized in that it includes: a verification component, including a fixed part and a rotating part coupled to each other, the fixed part has at least three radial support legs extending radially along the rudder system boring hole, the rotating part is arranged along the axial direction of the rudder system boring hole, the rotating part is detachably provided with two dial indicators, the measuring direction of the dial indicators is the radial direction of the rudder system boring hole, and the two dial indicators are distributed at intervals along the axial direction of the rudder system boring hole, when the fixed part is arranged inside the rudder system boring hole through the radial support legs, the rotating part rotates to make the dial indicator measure the inner wall of the rudder system boring hole around the entire circumference, so that the axial position of the rudder system boring hole is determined by the measurement readings of the two dial indicators, and the axial position is used as the assembly reference axis of the shaft system components to the rudder system boring hole.

[0008] Preferably, the fixing part includes an outer sleeve and a support frame. The outer sleeve is hollow and open at both ends. The angle between its extension direction and the axis of the rudder system boring is 0. The support frame has an integrally formed first fixing ring portion and radial support legs. The radial support legs are formed on the outer surface of the first fixing ring portion. The surface of the first fixing ring portion also has a fixing threaded hole. The fixing threaded hole is used to set a first abutting screw. The outer sleeve is tightened to the inside of the first fixing ring portion by the first abutting screw.

[0009] Furthermore, the radial support leg includes a first screw barrel portion and an adjusting screw which are threadedly connected. The first screw barrel portion and the first fixing ring portion are integrally formed. The adjusting screw is threadably matched with the first screw barrel portion along the radial direction of the rudder system bore.

[0010] Furthermore, the rotating part includes a verification shaft and a measuring bracket, the verification shaft coincides with the axis of the shaft system component, and the verification shaft is inserted into the outer sleeve, the measuring bracket is used to set the dial indicator, the measuring bracket has a second fixing ring portion, the second fixing ring portion is sleeved on the outside of the verification shaft, the surface of the second fixing ring portion also has a fixing threaded hole, the fixing threaded hole is used to set a second abutment screw, so that the verification shaft is tightened against the inside of the second fixing ring portion by the second abutment screw.

[0011] Furthermore, the measuring bracket includes a second screw barrel portion and an adjustable fixed sub-frame which are threadedly connected. The second screw barrel portion and the second fixed ring portion are integrally formed. The adjustable fixed sub-frame is threadably matched with the second screw barrel portion along the radial direction of the rudder system boring hole, and the dial indicator is detachably arranged on the adjustable fixed sub-frame.

[0012] Furthermore, it is verified that the two ends of the shaft rod are respectively located on the two outer sides of the outer sleeve, the number of the measuring brackets is two, the two measuring brackets are respectively located on the two outer sides of the outer sleeve, and the two dial indicators are respectively set on the two measuring brackets.

[0013] An operating method of a rudder system boring installation coaxiality verification device, implemented by the above-mentioned device, is characterized in that it includes the following steps:

[0014] Step S1: placing a rudder system boring hole installation coaxiality verification device inside the rudder system boring hole;

[0015] Step S2: rotating and adjusting the adjusting screw relative to the first screw barrel sub-portion, so that the length of the radial supporting foot increases, until it is verified that the shaft and the rudder system boring are coaxial;

[0016] Step S3: rotating the adjustable fixed sub-frame of the adjusting housing relative to the second screw barrel sub-part, thereby increasing the length of the measuring bracket until the measuring end of the dial indicator contacts the inner wall of the rudder system boring hole;

[0017] Step S4: applying a first torque to the verification shaft rod, so that the verification shaft rod rotates around the outer sleeve, and the plane where the first torque is located is perpendicular to the axis of the verification shaft rod;

[0018] Step S5: Record multiple characteristic readings of the two dial indicators during the full rotation respectively, and obtain the maximum fluctuation value of the readings of the two dial indicators based on the multiple characteristic readings. If the maximum fluctuation value is less than the predetermined coaxiality threshold, the axis of the verified shaft rod will be used as the assembly reference axis of the shaft system components for the rudder system boring.

[0019] Preferably, in step S5, in a full rotation, characteristic readings are recorded corresponding to the rotation angles of the verification shaft of 0°, 90°, 180°, 270° and 360°.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Because the rudder system boring hole installation coaxiality verification device of the present invention includes a verification component, the verification component includes a fixed part and a rotating part coupled to each other, the fixed part has at least three radial support legs extending radially along the rudder system boring hole, the rotating part is arranged along the axial direction of the rudder system boring hole, and the rotating part is provided with two dial indicators, the measuring direction of the dial indicators is the radial direction of the rudder system boring hole, and the two dial indicators are distributed at intervals along the axial direction of the rudder system boring hole. When the fixed part is arranged inside the rudder system boring hole through the radial support legs, the rotating part rotates to make the dial indicator measure the inner wall of the rudder system boring hole around the entire circumference, so that the axis position of the rudder system boring hole is determined by the measurement readings of the two dial indicators, and it is marked by illuminating the cross target, and the axis position is used as the assembly reference axis of the shaft system component to the rudder system boring hole. Therefore, the present invention does not require excessive human intervention and has almost no technical requirements, and can complete the determination of the assembly reference axis of the shaft system to the rudder system boring hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of a rudder system boring according to the present invention;

[0023] Figure 2 It is a schematic diagram of a coaxiality verification device for boring and installing a rudder system according to an embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the matching of the outer sleeve and the verification shaft rod of an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of a support frame according to an embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the cooperation between the measuring bracket and the dial indicator according to an embodiment of the present invention;

[0027] Figure 6It is a schematic diagram of the coordination between the rudder system boring hole installation coaxiality verification device and the rudder system boring hole according to an embodiment of the present invention;

[0028] Figure 7 The present invention is a schematic diagram of the steps of operating a coaxiality verification device for boring and installing a rudder system according to an embodiment of the present invention.

[0029] In the figure: H, rudder system boring hole, X, assembly reference axis, 100, rudder system boring hole installation coaxiality verification device, 11, fixing part, 111, outer sleeve, 111a, tightening flat groove part, 112, support frame, 1121, first fixing ring part, 1121a, first abutting screw, 1122, radial supporting leg, 11221, first screw barrel part, 11222, adjusting screw, 12, rotating part, 121, verification shaft rod, 122, measuring bracket, 1221, second fixing ring part, 1221a, second abutting screw, 1222, second screw barrel part, 1223, adjustable fixing sub-part, 1223a, third abutting screw, 1223b, stop screw, 123, dial indicator, S100, operation method of rudder system boring hole installation coaxiality verification device. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following embodiments and the accompanying drawings specifically illustrate the rudder system boring installation coaxiality verification device and operation method of the present invention. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0031] The rudder system bore in this embodiment extends horizontally or vertically. After its center axis is determined, the center axis is used as the assembly reference axis, the shaft system is assembled in the rudder system bore, and the ship rudder system is coupled through the shaft system.

[0032] like Figure 2 As shown, the rudder system boring installation coaxiality verification device 100 includes a verification component, and the verification component includes a fixed component 11 and a rotating component 12 coupled to each other.

[0033] The fixing member 11 includes an outer sleeve 111 and a supporting frame 112 .

[0034] The outer sleeve 111 is hollow and open at both ends, and the angle between its extension direction and the axis of the rudder system boring hole is 0. Specifically, the outer sleeve 111 is a hollow cylinder. In this embodiment, Figure 3 As shown, four tightening flat grooves 111 a are formed on the outer peripheral surface near both ends of the outer sleeve 111.

[0035] like Figure 4As shown, the support frame 112 has an integrally formed first fixing ring portion 1121 and radial supporting legs 1122 , and the radial supporting legs 1122 are formed on the outer circumferential surface of the first fixing ring portion 1121 .

[0036] The surface of the first fixed ring portion 1121 also has a fixing threaded hole (not shown in the drawings), and the fixing threaded hole is used to set the first push screw 1121a. The outer sleeve 111 is tightened to the inside of the first fixed ring portion 1121 through the first push screw 1121a. Specifically, the first fixed ring portion 1121 is a circular ring. In this embodiment, the end of the first push screw 1121a is pressed against the tightening flat groove portion 111a, thereby tightening the outer sleeve 111.

[0037] The number of radial support legs 1122 is at least three, and all of them extend radially along the rudder system boring. In the present embodiment, the number of radial support legs 1122 is four, and the four radial support legs 1122 extend radially outward from the center of the first fixing ring portion 1121. The number of fixing threaded holes is four, and each fixing threaded hole is located between two adjacent radial support legs 1122.

[0038] The radial support leg 1122 includes a first screw barrel portion 11221 and an adjusting screw 11222 which are threadedly connected. The first screw barrel portion 11221 is integrally formed with the first fixing ring portion 1121. The adjusting screw 11222 is threadably matched with the first screw barrel portion 11221 along the radial direction of the rudder system boring hole, so that the adjusting screw 11222 can be screwed in or out relative to the first fixing ring portion 1121, thereby shortening or lengthening the radial support leg 1122 accordingly.

[0039] The rotating member 12 is arranged along the axial direction of the rudder system bore, and the rotating member 12 includes a verification shaft 121 , a measuring bracket 122 and a dial indicator 123 .

[0040] Verify that the shaft 121 coincides with the axis of the shaft system outside the rudder system bore, and verify that the shaft 121 is inserted into the outer sleeve 111. Specifically, verify that the shaft 121 and the outer sleeve 111 have a fitting clearance of 0.02mm-0.03mm, so that the shaft 121 can rotate relative to the outer sleeve 111.

[0041] like Figure 5 As shown, the measuring bracket 122 is used to set the dial indicator 123 , and the measuring bracket 122 has a second fixed ring portion 1221 , a second screw barrel portion 1222 and an adjustable fixed portion 1223 .

[0042] The second fixing ring portion 1221 is sleeved on the outside of the verification shaft 121. The surface of the second fixing ring portion 1221 also has a fixing threaded hole (not shown in the drawings), and the fixing threaded hole is used to set a second abutting screw 1221a, so that the verification shaft 121 is tightened to the inside of the second fixing ring portion 1221 through the second abutting screw 1221a. Specifically, the fixing method of the second fixing ring portion 1221 to the verification shaft 121 is the same as the fixing method of the first fixing ring portion 1121 to the outer sleeve 111.

[0043] The second screw barrel portion 1222 and the adjustable fixed sub-frame 1223 are connected by end threads, the second screw barrel portion 1222 and the second fixed ring portion 1221 are formed integrally, the adjustable fixed sub-frame 1223 is threadedly matched with the second screw barrel portion 1222 along the radial direction of the rudder system boring hole, the dial indicator 123 is detachably arranged on the adjustable fixed sub-frame 1223, and the measuring direction of the dial indicator 123 is the radial direction of the rudder system boring hole.

[0044] In this embodiment, the adjustable fixed sub-portion 1223 has a setting through hole (not shown in the drawings) for the dial indicator 123 to be inserted, and the adjustable fixed sub-portion 1223 is provided with a stop screw 1223b that can be screwed into the setting through hole. The dial indicator 123 is pushed and fixed by the stop screw 1223b, or the stop screw 1223b is loosened so that the dial indicator 123 can be removed from the setting through hole.

[0045] The two ends of the verification shaft 121 are respectively located on the two outer sides of the outer sleeve 111. The number of measuring brackets 122 and dial indicators 123 are both two. The two measuring brackets 122 are respectively installed on the verification shaft 121 on the two outer sides of the outer sleeve 111, and the two dial indicators 123 are respectively set on the two measuring brackets 122.

[0046] Thus, the two dial indicators 123 are detachably arranged on the rotating member 12, and the two dial indicators 123 are spaced apart along the axial direction of the rudder system bore.

[0047] like Figure 6 As shown, when the fixing member 11 is arranged inside the rudder system boring hole H through the radial support legs 1122, the rotating member 12 rotates to make the dial indicator 123 measure the inner wall of the entire circumference of the rudder system boring hole H, so that the axis position of the rudder system boring hole H is determined by the measurement readings of the two dial indicators 123, and the axis position is used as the assembly reference axis X of the shaft system component to the rudder system boring hole H. In this embodiment, after the assembly reference axis X is determined, the assembly reference axis X is illuminated and marked by a cross illumination target preset on the outer side of the rudder system boring hole H.

[0048] like Figure 7 As shown, the operation method S100 of the rudder system boring installation coaxiality verification device is implemented by the rudder system boring installation coaxiality verification device 100, and includes the following steps:

[0049] Step S1: placing the rudder system boring hole installation coaxiality verification device 100 inside the rudder system boring hole H.

[0050] Step S2: Rotate and adjust the adjusting screw 11222 relative to the first screw barrel portion 11221 so as to increase the length of the radial supporting foot 1122 until it is verified that the shaft 121 is coaxial with the rudder system bore H.

[0051] Step S3: Rotate and adjust the adjustable fixed sub-frame 1223b relative to the second screw barrel portion 1222, so that the length of the measuring bracket 122 increases until the measuring end of the dial indicator 123 contacts the inner wall of the rudder system boring hole H.

[0052] Step S4: applying a first torque to the verification shaft 121 , so that the verification shaft 121 rotates around the outer sleeve 111 , and the plane where the first torque is located is perpendicular to the axis of the verification shaft 121 .

[0053] Step S5: respectively record multiple characteristic readings of the two dial indicators 123 in the full rotation, and obtain the maximum fluctuation value of the readings of the two dial indicators based on the multiple characteristic readings. If the maximum fluctuation value is less than the predetermined coaxiality threshold, the axis of the shaft rod 121 verified at this time is used as the assembly reference axis X of the shaft system component for the rudder system boring H. In the full rotation, the corresponding characteristic readings are recorded corresponding to the rotation angles of the verified shaft rod of 0°, 90°, 180°, 270° and 360°.

[0054] Specifically, assuming that the characteristic readings obtained by the two dial indicators 123 are A1, A2, A3, A4, A5 and B1, B2, B3, B4, B5 respectively, the difference between the maximum and minimum values ​​in {A1, A2, A3, A4, A5} is taken as the maximum fluctuation value of one percentage reading; the difference between the maximum and minimum values ​​in {B1, B2, B3, B4, B5} is taken as the maximum fluctuation value of another percentage reading. If these two maximum fluctuation values ​​are both smaller than the predetermined coaxiality threshold, the axis of the shaft rod 121 verified at this time is taken as the assembly reference axis X of the shaft system component for the rudder system boring H.

[0055] The above-mentioned implementation modes are preferred cases of the present invention and are not used to limit the protection scope of the present invention. Various deformations or modifications that can be made by ordinary technicians in this field without creative work within the scope of the attached claims are still within the protection scope of this patent.

Claims

1. A rudder system boring installation coaxiality verification device, characterized in that: include: The verification component includes a fixed part and a rotating part coupled to each other, wherein the fixed part has at least three radial support legs extending radially of a rudder system bore, the rotating part is arranged along the axial direction of the rudder system bore, and the rotating part is detachably provided with two dial indicators, the measuring direction of the dial indicators is the radial direction of the rudder system bore, and the two dial indicators are distributed at intervals along the axial direction of the rudder system bore, when the fixed part is arranged inside the rudder system bore through the radial support legs, the rotating part rotates to make the dial indicator measure the inner wall of the entire circumference of the rudder system bore, so that the axial position of the rudder system bore is determined by the measurement readings of the two dial indicators, and the axial position is used as the assembly reference line of the shaft system components to the rudder system bore.

2. The rudder system boring installation coaxiality verification device according to claim 1, characterized in that: in, The fixing member comprises an outer sleeve and a support frame, wherein the outer sleeve is hollow and open at both ends, and the angle between the extension direction and the axis of the rudder system bore hole is 0, and the support frame comprises an integrally formed first fixing ring portion and the radial support legs, wherein the radial support legs are formed on the outer surface of the first fixing ring portion, The surface of the first fixing ring portion also has a fixing threaded hole, and the fixing threaded hole is used to set a first abutting screw. The outer sleeve is tightened to the inside of the first fixing ring portion through the first abutting screw.

3. The rudder system boring installation coaxiality verification device according to claim 2, characterized in that: in, The radial support leg comprises a first screw barrel portion and an adjusting screw connected by threads, the first screw barrel portion is integrally formed with the first fixing ring portion, and the adjusting screw is threadedly matched with the first screw barrel portion along the radial direction of the rudder system bore.

4. The rudder system boring installation coaxiality verification device according to claim 2 or 3, characterized in that: in, The rotating member comprises a verification shaft and a measuring bracket, wherein the verification shaft coincides with the axis of the shaft system component and is inserted into the outer sleeve, and the measuring bracket is used to set the dial indicator, and the measuring bracket has a second fixing ring portion, The second fixing ring portion is sleeved on the outside of the verification shaft rod, and the surface of the second fixing ring portion also has a fixing threaded hole, which is used to set a second abutting screw, so that the verification shaft rod is tightened against the inside of the second fixing ring portion through the second abutting screw.

5. The rudder system boring installation coaxiality verification device according to claim 4, characterized in that: in, The measuring bracket includes a second screw barrel portion and an adjustable fixed sub-frame which are threadedly connected. The second screw barrel portion and the second fixed ring portion are integrally formed. The adjustable fixed sub-frame is threadedly matched with the second screw barrel portion along the radial direction of the rudder system boring hole. The dial indicator is detachably arranged on the adjustable fixed sub-frame.

6. The rudder system boring installation coaxiality verification device according to claim 4, characterized in that: in, The two ends of the verification shaft rod are respectively located at the two outer sides of the outer sleeve, the number of the measuring brackets is two, the two measuring brackets are respectively located at the two outer sides of the outer sleeve, and the two dial indicators are respectively arranged on the two measuring brackets.

7. An operating method of a rudder system boring installation coaxiality verification device, implemented by the device of claim 6, characterized in that: The following steps are involved: Step S1: placing the rudder system boring hole installation coaxiality verification device inside the rudder system boring hole; Step S2: rotating and adjusting the adjusting screw relative to the first screw barrel sub-portion, so that the length of the radial supporting foot increases until the verification shaft is coaxial with the rudder system boring hole; Step S3: rotating and adjusting the adjustable fixed sub-frame relative to the second screw barrel sub-section, so that the length of the measuring bracket increases until the measuring end of the dial indicator contacts the inner wall of the rudder system boring hole; Step S4: applying a first torque to the verification shaft rod, so that the verification shaft rod rotates around the outer sleeve, and the plane where the first torque is located is perpendicular to the axis of the verification shaft rod; Step S5: respectively record multiple characteristic readings of the two dial indicators during the full rotation, and obtain the maximum fluctuation value of the readings of the two dial indicators based on the multiple characteristic readings. If the maximum fluctuation value is less than a predetermined coaxiality threshold, the axis of the verification shaft rod is used as the assembly reference line for the shaft system components to bore the rudder system.

8. The operating method of the rudder system boring installation coaxiality verification device according to claim 7 is characterized by: in, In step S5, in a full rotation, the characteristic readings are recorded corresponding to the rotation angles of the verification shaft of 0°, 90°, 180°, 270° and 360°.

Images