Adjustable ship shafting flange centering inspection device and inspection method

Abstract

The invention discloses an adjustable ship shafting flange centering inspection device and method, and the device comprises the steps: arranging a fixed frame on a first shafting flange, fixing a first connecting rod on the fixed frame, fixing a second connecting rod at the end part of the first connecting rod through a first support, fixing a second support at the end part of the second connecting rod, and installing a dial indicator on the second support. The pointer of the dial indicator can be adjusted from the outer circumferential surface perpendicular to the second shafting flange to the flange surface perpendicular to the second shafting flange through the cooperation of the movement of the second connecting rod and the rotation of the second support, and the detection of offset and zigzag values between different intermediate shafts and between flanges of the intermediate shafts and the tail shaft can be realized. The detection precision of the centering precision of the shaft flange is improved, and the detection efficiency is also improved.

Description

Technical Field

[0001] This invention relates to the field of shipbuilding technology, and in particular to an adjustable ship shafting flange alignment inspection device and inspection method. Background Technology

[0002] During ship construction, before connecting shaft flanges, their bend and offset values ​​are inspected. Only when the bend and offset values ​​between the shaft flanges meet the requirements are the shaft connection bolts installed. In the open shafting state, the stern shaft and intermediate shaft typically cannot rotate. Tools for inspecting the bend and offset of the shaft flanges include straightedges and feeler gauges. However, classification societies sometimes do not accept feeler gauges, only accepting dial indicators or laser measurement methods. Generally, dial indicator rotation requires a rotating shaft. However, since the intermediate shaft and stern shaft cannot rotate, the alignment accuracy of the flanges between different intermediate shafts, and between the intermediate shaft and stern shaft, cannot be measured using dial indicators. Therefore, designing a tool and method for inspecting the offset and bend values ​​of shafting flanges has become an urgent problem to be solved. Summary of the Invention

[0003] In view of this, the present invention provides an adjustable ship shafting flange alignment inspection device and inspection method to solve the problem that it is currently impossible to use a dial indicator to measure the offset and tortuosity values ​​between flanges of different intermediate shafts and between intermediate shafts and stern shafts.

[0004] An adjustable marine shafting flange alignment inspection device includes a fixed frame, a first connecting rod mounted on the fixed frame via a first fastening assembly, a first bracket mounted on the first connecting rod, a second connecting rod mounted on the first bracket via a second fastening assembly, a second bracket mounted on the second connecting rod via a third fastening assembly, and a dial indicator mounted on the second bracket. The fixing bracket is mounted on the first shaft flange, with one side of the bracket fitting against the flange face of the shaft flange and the other side fitting against the outer circumferential surface of the shaft flange. The first connecting rod is parallel to the outer circumferential surface of the first shaft flange. The second link can move relative to the first support; The second bracket can rotate relative to its connection point with the second link and move in coordination with the movement of the second link to adjust the pointer of the dial indicator from the outer circumferential surface perpendicular to the second shaft flange to the flange surface perpendicular to the second shaft flange.

[0005] Preferably, a ring is provided at the end of the first connecting rod. The first fastening assembly includes a first bolt, a first nut and a second nut screwed onto the first bolt. The first bolt is vertically fixed to the frame body of the fixing bracket that contacts the outer circumferential surface of the first shaft flange. The ring at the end of the first connecting rod is sandwiched between the first nut and the second nut.

[0006] Preferably, the second fastening assembly includes a second bolt. The first support includes a first frame and a second frame extending from the bottom of the first frame and bending upward to engage with the first frame. The lower part of the first frame and the lower part of the second frame are each provided with a semi-circular groove to form a circular clamping hole between them for the first connecting rod to pass through. A through hole for the second connecting rod to pass through is opened in the middle of the first frame. A first bolt hole for fixing a second bolt is opened on the first frame and the second frame. The first bolt hole is connected to the through hole and the center line of the bolt hole is perpendicular to the center line of the through hole.

[0007] Preferably, the third fastening component includes a third bolt. The second bracket is a T-shaped bracket, and its horizontal frame has a second bolt hole for fixing the third bolt along its length direction, and its vertical frame has a fixing hole that penetrates its thickness for the meter pointer to pass through. The center line of the second bolt hole is perpendicular to the center line of the fixing hole.

[0008] Preferably, the fixing frame is an L-shaped frame, with the inner surface of its vertical section being a plane and the inner surface of its horizontal section being an arc surface.

[0009] A method for inspecting the alignment of shaft flanges using the aforementioned device specifically includes the following steps: S1, the adjustable ship shafting flange alignment inspection device is clamped on the first shafting flange and its dial indicator pointer is in perpendicular contact with the outer circumferential surface of the second shafting flange; Using the flange face of the first shaft flange as the reference plane, the fixing bracket is rotated sequentially to the upper, lower, left, and right positions of the first shaft flange while still attached to the flange face. Based on the changes in the dial indicator readings at the upper, lower, left, and right positions, the tortuosity value of the shaft flange alignment is calculated. S2, Adjust the adjustable ship shafting flange alignment inspection device so that the pointer of its dial indicator is in perpendicular contact with the flange face of the second shafting flange; Using the flange face of the first shaft flange as the reference plane, the fixing bracket is rotated sequentially to the upper, lower, left, and right positions of the first shaft flange while still attached to the flange face. Based on the changes in the dial indicator readings at the upper, lower, left, and right positions, the offset value of the shaft flange alignment is calculated.

[0010] Preferably, the specific steps in step S1 of clamping the adjustable ship shafting flange alignment inspection device onto the first shafting flange and ensuring that the pointer of its dial indicator is in perpendicular contact with the outer circumferential surface of the second shafting flange are as follows: The mounting bracket of the adjustable ship shafting flange alignment inspection device is fastened on the first shafting flange, and the dial indicator is fixed on the second bracket. Based on the thickness of the first and second shaft flanges, adjust the length of the second connecting rod so that the pointer of the dial indicator is in perpendicular contact with the outer circumferential surface of the second shaft flange. After adjustment, tighten the first, second, and third fastening components.

[0011] Preferably, the specific steps in step S2 of adjusting the adjustable ship shafting flange alignment inspection device so that the pointer of its dial indicator is in perpendicular contact with the flange face of the second shafting flange are as follows: Loosen the second fastening assembly and move the second linkage to move the dial indicator to the side of the flange face of the second shaft flange; Loosen the third fastening assembly and rotate the second bracket so that the pointer of the dial indicator is in perpendicular contact with the flange face of the second shaft flange; Lock the second and third fastening components.

[0012] The beneficial effects of this invention are: 1. This invention, by setting a fixing frame on the first shaft flange, fixing a first connecting rod on the fixing frame, fixing a second connecting rod at the end of the first connecting rod via a first bracket, fixing a second bracket at the end of the second connecting rod, and installing a dial indicator on the second bracket, allows the pointer of the dial indicator to be adjusted from the outer circumferential surface perpendicular to the second shaft flange to the flange surface perpendicular to the second shaft flange by coordinating the movement of the second connecting rod with the rotation of the second bracket. This enables the detection of offset and tortuosity values ​​between different intermediate shafts and between the flanges of intermediate shafts and stern shafts, which not only improves the detection accuracy of shaft flange alignment but also improves the detection efficiency.

[0013] 2. This invention is applicable to all ships and has a wide range of applications. Furthermore, the adjustable ship shafting flange alignment inspection device of this invention is reusable and is not a disposable inspection tool, which can greatly reduce the cost and inspection time of ship shafting alignment inspection. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram for detecting the tortuosity value of the shaft flange alignment.

[0016] Figure 2 This is a schematic diagram of the offset values ​​for the shaft flange alignment.

[0017] Figure 3 This is a schematic diagram showing the alignment of the first shaft flange and the second shaft flange.

[0018] Figure 4 This is a top view of the mounting bracket being fastened to the first shaft flange.

[0019] Figure 5 This is a schematic diagram showing the connection between the first link, the second link, and the first support.

[0020] Figure 6 This is a top view of the second support.

[0021] The meanings of the labels in the diagram are as follows: 1 is a fixed frame. 2 is the first bolt. 3 is the first nut. 4 is the second nut. 5 is the first shaft flange. 6 is the first link. 7 is the first support, 71 is the first frame, 72 is the second frame, 73 is a circular clamping hole, 74 is a through hole, and 75 is the first bolt hole. 8 is the second bolt. 9 is the second link. 10 is the third bolt. 11 is the second bracket, 111 is the second bolt hole, and 112 is the fixing hole. 12 represents a percentage. 13 is the second shaft flange. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0023] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0024] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms and should not be construed as indicating or implying relative importance. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0025] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0027] To better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings.

[0028] This invention provides an adjustable ship shafting flange alignment inspection device, comprising a fixed frame 1, a first connecting rod 6 mounted on the fixed frame 1 via a first fastening assembly, a first bracket 7 mounted on the first connecting rod 6, a second connecting rod 9 mounted on the first bracket 7 via a second fastening assembly, a second bracket 11 mounted on the second connecting rod 9 via a third fastening assembly, and a dial indicator 12 mounted on the second bracket 11. The fixing bracket 1 is mounted on the first shaft flange 5, with one side of the bracket fitting against the flange face of the shaft flange and the other side fitting against the outer circumferential surface of the shaft flange. The first connecting rod 6 is parallel to the outer circumferential surface of the first shaft flange 5. The second link 9 can move relative to the first bracket 7; The second bracket 11 can rotate relative to its connection point with the second link 9 and cooperate with the movement of the second link 9 to adjust the pointer of the dial indicator 12 from the outer circumferential surface perpendicular to the second shaft flange 13 to the flange surface perpendicular to the second shaft flange 13.

[0029] Specifically, the fixing frame 1 is an L-shaped frame, with the inner surface of its vertical section being a plane and the inner surface of its horizontal section being an arc surface.

[0030] The first fastening assembly includes a first bolt 2, a first nut 3 and a second nut 4 screwed onto the first bolt 2, and the first bolt 2 is vertically fixed to the horizontal section of the frame of the fixing frame 1.

[0031] The first connecting rod 6 has a ring at its end, which is sandwiched between the first nut 3 and the second nut 4. By tightening the second nut 4, the first connecting rod 6 can be fixed to the fixing frame 1.

[0032] After the first connecting rod 6 is installed, the first connecting rod 6 is parallel to the outer circumferential surface of the first shaft flange 5.

[0033] The first bracket 7 is fixed to the other end of the first connecting rod 6 opposite to the first fastening assembly. The second fastening assembly includes a second bolt 8.

[0034] The first support 7 includes a first frame 71 and a second frame 72 extending from the bottom of the first frame 71 and bending upward to engage with the first frame 71. The lower part of the first frame 71 and the lower part of the second frame 72 are each provided with a semi-circular groove to form a circular clamping hole 73 between them for the first connecting rod 6 to pass through. The middle part of the first frame 71 is provided with a through hole 74 for the second connecting rod 9 to pass through. The first frame 71 and the second frame 72 are provided with a first bolt hole 75 for fixing the second bolt 8. The first bolt hole 75 is connected to the through hole 74 and the center line of the bolt hole 75 is perpendicular to the center line of the through hole 74. When the second bolt 8 is not tightened, the first frame 71 and the second frame 72 are not in contact, and there is a certain gap between them. When the second bolt 8 is tightened, under the action of the tightening force of the second bolt 8, the first frame 71 and the second frame 72 are in close contact, which can clamp the first connecting rod 6 in the circular clamping hole 73 of the first bracket 7, that is, the first bracket 7 is firmly clamped on the first connecting rod 6. At the same time, the end of the second bolt 8 will also press against the second connecting rod 9, fixing the position of the second connecting rod 9 and preventing the position of the second connecting rod 9 from moving during subsequent use.

[0035] In this embodiment, the first bracket 7 is manufactured as a single piece, and when the manufacturing is completed, there is a certain V-shaped gap between its first frame 71 and second frame 72.

[0036] The second connecting rod 9 has a threaded hole at its end near the second shaft flange 13, and the second connecting rod 9 is fixed to the second bracket 11 by a third fastening assembly.

[0037] The third fastening component includes a third bolt 10.

[0038] The second bracket 11 is a T-shaped bracket, with second bolt holes 111 for fixing the third bolt 10 along its length on its transverse frame, and fixing holes 112 penetrating its thickness for the pointer of the dial indicator 12 to pass through on its longitudinal frame. The center line of the second bolt hole 111 is perpendicular to the center line of the fixing hole 112. When fixing the second connecting rod 9 to the second bracket 11, align the threaded hole at the end of the second connecting rod 9 with the second bolt hole 11 on the second bracket 11, and then insert the third bolt 10 to lock it in place. After loosening the nut on the third bolt 10, the second bracket 11 can be rotated to adjust the pointer direction of the dial indicator 12 fixed on it.

[0039] The present invention also provides a method for inspecting the alignment of shaft flanges using the aforementioned device, specifically including the following steps: S1, the adjustable ship shafting flange alignment inspection device is clamped onto the first shafting flange 5, and the pointer of the dial indicator 12 is made to perpendicularly contact the outer circumferential surface of the second shafting flange 13. That is, firstly, the fixing frame 1 of the adjustable ship shafting flange alignment inspection device is clamped onto the first shafting flange 5, and the dial indicator 12 is fixed onto the second bracket 11; then, according to the thickness of the first shafting flange 5 and the second shafting flange 13, the length of the second connecting rod 9 is adjusted so that the pointer of the dial indicator 12 is perpendicularly contacting the outer circumferential surface of the second shafting flange 13. After adjustment, the first fastening component, the second fastening component and the third fastening component are locked.

[0040] Then, using the flange face of the first shaft flange 5 as the reference plane, the fixing bracket is rotated sequentially to the upper, lower, left, and right positions of the first shaft flange 5 while adhering to the flange face of the first shaft flange 5. Based on the changes in the dial gauge readings at the upper, lower, left, and right positions, the tortuosity value (SAG, where SAG is the maximum allowable radial deviation value when the two shaft flanges are aligned) of the shaft flange alignment is calculated.

[0041] S2, Adjust the adjustable ship shafting flange alignment inspection device so that the pointer of the dial indicator 12 is in perpendicular contact with the flange face of the second shafting flange 13. That is, first loosen the second fastening assembly, move the second connecting rod 9 to move the dial indicator 12 to the side of the flange face of the second shafting flange 13; then, loosen the third fastening assembly, rotate the second bracket 11 so that the pointer of the dial indicator 12 is in perpendicular contact with the flange face of the second shafting flange 13, and lock the second fastening assembly and the third fastening assembly.

[0042] Then, using the flange face of the first shaft flange 5 as the reference plane, the fixing bracket is rotated sequentially to the upper, lower, left, and right positions of the first shaft flange 5 while adhering to the flange face of the first shaft flange 5. Based on the changes in the dial gauge readings at the upper, lower, left, and right positions, the offset value (GAP, where GAP refers to the maximum allowable axial angle deviation when the two shaft flanges are aligned) of the shaft flange is calculated.

[0043] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. An adjustable ship shafting flange alignment inspection device, characterized in that, It includes a fixed frame (1), a first connecting rod (6) mounted on the fixed frame (1) by a first fastening assembly, a first bracket (7) mounted on the first connecting rod (6), a second connecting rod (9) mounted on the first bracket (7) by a second fastening assembly, a second bracket (11) mounted on the second connecting rod (9) by a third fastening assembly, and a dial indicator (12) mounted on the second bracket (11). The fixing bracket (1) is mounted on the first shaft flange (5), with one side of the bracket fitting against the flange face of the shaft flange and the other side fitting against the outer circumferential surface of the shaft flange. The first connecting rod (6) is parallel to the outer circumferential surface of the first shaft flange (5). The second link (9) can move relative to the first bracket (7); The second bracket (11) can rotate relative to its connection point with the second link (9) and cooperate with the movement of the second link (9) to adjust the pointer of the dial indicator (12) from the outer circumferential surface perpendicular to the second shaft flange (13) to the flange surface perpendicular to the second shaft flange (13).

2. The adjustable ship shafting flange alignment inspection device according to claim 1, characterized in that, The end of the first connecting rod (6) is provided with a ring. The first fastening assembly includes a first bolt (2), a first nut (3) and a second nut (4) screwed onto the first bolt (2). The first bolt (2) is vertically fixed on the frame of the fixing frame (1) that is in contact with the outer circumferential surface of the first shaft flange (5). The ring at the end of the first connecting rod (6) is sandwiched between the first nut (3) and the second nut (4).

3. The adjustable ship shafting flange alignment inspection device according to claim 1, characterized in that, The second fastening assembly includes a second bolt (8). The first bracket (7) includes a first frame (71) and a second frame (72) extending from the bottom of the first frame (71) and bending upward to engage with the first frame (71). The lower part of the first frame (71) and the lower part of the second frame (72) are provided with a semi-circular groove to form a circular clamping hole (73) between them for the first connecting rod (6) to pass through. The middle part of the first frame (71) is provided with a through hole (74) for the second connecting rod (9) to pass through. The first frame (71) and the second frame (72) are provided with a first bolt hole (75) for fixing the second bolt (8). The first bolt hole (75) is connected to the through hole (74) and the center line of the bolt hole (75) is perpendicular to the center line of the through hole (74).

4. The adjustable ship shafting flange alignment inspection device according to claim 1, characterized in that, The third fastening component includes a third bolt (10). The second bracket (11) is a T-shaped bracket, and its horizontal frame has a second bolt hole (111) for fixing the third bolt (10) along its length direction, and its vertical frame has a fixing hole (112) that penetrates its thickness for the pointer of the dial indicator (12) to pass through. The center line of the second bolt hole (111) is perpendicular to the center line of the fixing hole (112).

5. The adjustable ship shafting flange alignment inspection device according to claim 1, characterized in that, The fixing frame (1) is an L-shaped frame, with the inner surface of its vertical section being a plane and the inner surface of its horizontal section being an arc surface.

6. A method for inspecting the alignment of shaft flanges using the apparatus according to any one of claims 1-5, characterized in that, Specifically, the following steps are included: S1, the adjustable ship shafting flange alignment inspection device is clamped on the first shafting flange (5) and the pointer of its dial indicator (12) is perpendicular to the outer circumferential surface of the second shafting flange (13); Using the flange face of the first shaft flange (5) as the reference plane, the fixing bracket is rotated to the upper, lower, left and right positions of the first shaft flange (5) in sequence while adhering to the flange face of the first shaft flange (5). The tortuosity value of the shaft flange alignment is calculated based on the changes in the dial gauge readings at the upper, lower, left and right positions. S2, Adjust the adjustable ship shafting flange alignment inspection device so that the pointer of its dial indicator (12) is in vertical contact with the flange face of the second shafting flange (13); Using the flange face of the first shaft flange (5) as the reference plane, the fixing bracket is rotated sequentially to the upper, lower, left and right positions of the first shaft flange (5) while adhering to the flange face of the first shaft flange (5). The offset value of the shaft flange alignment is calculated based on the changes in the dial gauge readings at the upper, lower, left and right positions.

7. The method according to claim 6, characterized in that, The specific steps in step S1 of clamping the adjustable ship shafting flange alignment inspection device onto the first shafting flange (5) and ensuring that the pointer of its dial indicator (12) is in perpendicular contact with the outer circumference of the second shafting flange (13) are as follows: The mounting bracket (1) of the adjustable ship shaft flange alignment inspection device is fastened on the first shaft flange (5), and the dial indicator (12) is fixed on the second bracket (11). Based on the thickness of the first shaft flange (5) and the second shaft flange (13), adjust the length of the second connecting rod (9) so that the pointer of the dial indicator (12) is in perpendicular contact with the outer circumferential surface of the second shaft flange (13). After adjustment, tighten the first fastening assembly, the second fastening assembly and the third fastening assembly.

8. The method according to claim 6, characterized in that, The specific steps for adjusting the adjustable ship shafting flange alignment inspection device in step S2, so that the pointer of its dial indicator (12) is in perpendicular contact with the flange face of the second shafting flange (13), are as follows: Loosen the second fastening assembly and move the second link (9) to move the dial indicator (12) to the side of the flange face of the second shaft flange (13); Loosen the third fastening assembly and rotate the second bracket (11) so that the pointer of the dial indicator (12) is in perpendicular contact with the flange face of the second shaft flange (13); Lock the second and third fastening components.

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