A detection device for a rudder shaft of a ship

Abstract

The application relates to the field of ship rudder shaft detection, in particular to a detection device for a ship rudder shaft. The technical problem to be solved is that the existing rudder shaft coaxiality detection devices can only perform static point-by-point measurement on a single part, and it is difficult to realize dynamic continuous acquisition, the data representativeness is poor, and the measurement precision is insufficient. The detection device for the ship rudder shaft comprises a base, a fixed frame is arranged on one side of the base, and a three-jaw chuck is rotatably arranged on the fixed frame. The three-jaw chuck and two threaded rods are synchronously driven to rotate by two output shafts of a double-shaft servo motor, the contact frame one, the contact frame two and the contact frame three are driven to contact the step part, the outer circle and the end blind hole of the rudder shaft body, three key detection parts, real-time collection and transmission of the coaxiality data of each part are realized by cooperation of three electronic micrometers, synchronous coaxiality measurement of the three detection points is effectively realized, and the detection efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ship rudder shaft detection, and particularly relates to a detection device for a ship rudder shaft. BACKGROUND

[0002] As a key component in the ship transmission system, the coaxiality between each structural part of the rudder shaft directly relates to the overall assembly accuracy and running stability, so the coaxiality of key parts such as the stepped part, the outer circle and the end blind hole of the rudder shaft needs to be detected after the rudder shaft is processed.

[0003] Most of the existing detection methods can only measure a single part statically and point by point, and it is difficult to realize synchronous detection of multiple key detection parts such as the stepped part, the outer circle and the end blind hole, resulting in long detection period, complicated operation and low detection efficiency; secondly, the traditional device usually cannot realize the axial movement of the detection mechanism under the condition that the rudder shaft body rotates, and it is difficult to perform dynamic and continuous data collection, and only partial static measurement results can be obtained, so the measurement data is not representative enough, and deviation may occur, which cannot fully reflect the overall coaxiality of the rudder shaft, and affects the accuracy and reliability of quality judgment. SUMMARY

[0004] In order to overcome the shortcomings of the existing rudder shaft coaxiality detection device that can only measure a single part statically and point by point, and is difficult to realize dynamic and continuous collection, the data is not representative enough, and the measurement accuracy is not enough, the present application provides a detection device for a ship rudder shaft, which can simultaneously detect the coaxiality of multiple key parts such as the stepped part, the outer circle and the end blind hole under the premise that the rudder shaft body is stably positioned, and can also drive the detection mechanism to move smoothly along the axial direction during the slow rotation of the rudder shaft body, so that dynamic and continuous coaxiality data collection of each detection part in the axial range is realized, thereby improving the continuity and representativeness of the detection process.

[0005] The technical scheme of the present application is as follows: a detection device for a ship rudder shaft, comprising a base, and 0 and 0, a fixed frame is installed on one side of the base, a three-jaw chuck is rotatably arranged on the fixed frame, a sliding frame is slidably arranged on the other side of the base, a detection mechanism is arranged on the sliding frame, and a contact mechanism is arranged on the detection mechanism.

[0006] In one embodiment, a double-shaft servo motor is installed on one side of the base close to the fixed frame, and a transmission assembly one is connected between one of the output shafts of the double-shaft servo motor and the three-jaw chuck.

[0007] In one embodiment, the detection mechanism comprises a cylinder, the cylinder is installed on the sliding frame, an installation frame is arranged on one side of the cylinder close to the three-jaw chuck, three electronic micrometers are installed on the installation frame, the probes of the three electronic micrometers slide through the cylinder and are located in the internal cavity of the cylinder.

[0008] In one of the embodiments, the contact mechanism comprises two horizontal shafts, a contact frame one and a contact frame two are slidingly arranged between the two horizontal shafts, two springs one are connected between the contact frame one and the inner wall of the cylinder, two springs two are connected between the contact frame two and the inner wall of the cylinder, a contact frame three is slidingly arranged on one side of the cylinder close to the three-jaw chuck, and one spring three is connected between the contact frame three and the cylinder.

[0009] In one of the embodiments, the reset mechanism comprises a rotating shaft, a rotating shaft is rotatably arranged on one side of the cylinder away from the three-jaw chuck, a cam one is arranged at one end of the rotating shaft, a cam two is arranged on the side wall of the cam one, the cam one and the cam two are located in the cylinder, a roller one is rotatably arranged on one side of the contact frame one and the contact frame two close to each other, the two rollers one are in contact with the two sides of the cam one respectively, a roller two is rotatably arranged on the contact frame three, and the roller two is in contact with the cam two.

[0010] In one of the embodiments, the progressive mechanism comprises two threaded rods, the two threaded rods are rotatably arranged on the base, the sliding frame is connected with the two threaded rods through threads, and a transmission assembly two is connected between the other output shaft of the double-shaft servo motor and the two threaded rods.

[0011] In one of the embodiments, the transmission assembly two comprises three transmission wheels and a toothed belt, the three transmission wheels are arranged on the other output shaft of the double-shaft servo motor and the two threaded rods respectively, and the three transmission wheels are wound with the toothed belt.

[0012] In one of the embodiments, the positioning mechanism comprises a positioning frame, the positioning frame is slidingly arranged on the fixed frame, the positioning frame is connected with a fastening bolt through threads, and the end of the fastening bolt abuts against the side wall of the fixed frame.

[0013] In one of the embodiments, the driving mechanism comprises a gear, the gear is arranged on the rotating shaft, a rack is slidingly arranged on the sliding frame, the rack is engaged with the gear, a roller shaft is rotatably arranged at the lower part of the rack, a vertical plate is arranged on the base, and a guide groove is formed in the vertical plate.

[0014] In one of the embodiments, the guide groove comprises a long groove, a short groove and an inclined groove, the inclined groove is located between the long groove and the short groove, and the roller shaft is located in the short groove.

[0015] Compared with the prior art, the present application has the following advantages: 1. The three-jaw chuck is synchronously driven to rotate by the two output shafts of the double-shaft servo motor, the two threaded rods drive the contact frame one, the contact frame two and the contact frame three to contact the stepped part, the outer circle and the end blind hole of the rudder shaft body, three electronic micrometers are used to collect and transmit the coaxiality data of each part in real time, the synchronous coaxiality measurement of the three detection points is effectively realized, the detection efficiency is significantly improved, the time waste and data error accumulation caused by the traditional point-by-point measurement are avoided, the detection result is ensured to be highly consistent and accurate, and the high-precision detection requirement is met.

[0016] 2. During the detection process, the contact frame one, the contact frame two and the contact frame three continuously move along the axial direction of the rudder shaft body as the rudder shaft body slowly rotates, the probes of the three electronic micrometers always maintain stable contact with the contact frame, dynamic and continuous coaxiality data collection is realized, and the continuity and high precision of the measurement process are ensured.

[0017] 3. The three-jaw chuck cooperates with the positioning frame and the fastening bolt to realize accurate positioning and stable clamping of the rudder shaft body, the operator can quickly complete the detection preparation work by combining automatic and manual adjustment, the artificial operation difficulty is reduced, the automation level and the reuse performance of the detection process are improved, and the stability and the operation efficiency of the overall detection system are further improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0019] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present application.

[0020] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the contact mechanism and the reset mechanism of the present application.

[0021] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the detection mechanism, the contact mechanism and the reset mechanism of the present application.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the contact mechanism, the reset mechanism and the progressive mechanism of the present application.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the detection mechanism and the contact mechanism of the present application.

[0024] Figure 7 It is a schematic diagram of the disassembled structure of the detection mechanism and the progressive mechanism of the present application.

[0025] Figure 8 It is a schematic diagram of the disassembled structure of the detection mechanism, the contact mechanism and the reset mechanism of the present application.

[0026] Figure 9 Figure 6 is a schematic diagram of the contact mechanism of the application.

[0027] Figure 10 Figure 7 is a schematic diagram of the contact mechanism and reset mechanism of the application.

[0028] Figure 11 Figure 8 is a schematic diagram of the base and progressive mechanism of the application.

[0029] Figure 12 Figure 9 is a schematic diagram of the positioning mechanism and drive mechanism of the application.

[0030] Figure 13 Figure 10 is a schematic diagram of the positioning mechanism and drive mechanism of the application.

[0031] In the figure, the following are marked: 1, base; 2, fixed frame; 3, three-jaw chuck; 4, rudder shaft body; 5, sliding frame; 51, double-shaft servo motor; 52, transmission assembly one; 61, cylinder body; 62, mounting frame; 63, electronic micrometer; 71, horizontal shaft; 721, contact frame one; 722, spring one; 731, contact frame two; 732, spring two; 741, contact frame three; 742, spring three; 81, rotating shaft; 82, cam one; 821, roller one; 83, cam two; 831, roller two; 91, threaded rod; 92, transmission assembly two; 101, positioning frame; 102, fastening bolt; 111, gear; 112, rack; 113, roller shaft; 114, vertical plate; 115, guide groove. DETAILED DESCRIPTION

[0032] Although the application can be described with respect to particular applications or industries, those skilled in the art will recognize that the application has a much broader scope. Those of ordinary skill in the art will recognize that terms such as: above, below, upper, lower, and the like are words of description used with respect to the drawings and are not intended to limit the scope of the application as defined in the appended claims. Any numerical designations such as: first or second are intended to be illustrative only and are not intended to limit the scope of the application in any way.

[0033] Example 1: A detection device for a ship rudder shaft, as shown in Figures 1-13As shown, including the base 1, 0 and 0, the base 1 side is provided with a fixed frame 2, the fixed frame 2 is rotatably provided with a three-jaw chuck 3, the three-jaw chuck 3 is clamped with a rudder shaft body 4 to be detected, the rudder shaft body 4 is provided with a stepped shaft at the end, and the end has a blind hole, the other side of the base 1 is slidably provided with a sliding frame 5, the sliding frame 5 is provided with a detection mechanism, the detection mechanism is used for synchronous detection of the coaxiality between the outer circle, the stepped portion and the blind hole inner wall of the rudder shaft body 4, and the detection mechanism is provided with a contact mechanism, which is used for contacting with the outer circle, the stepped portion and the blind hole inner wall.

[0034] A double-shaft servo motor 51 is mounted on one side of the base 1 close to the fixed frame 2, one of the output shafts of the double-shaft servo motor 51 is connected with the three-jaw chuck 3 through a transmission assembly one 52, the transmission assembly one 52 is composed of two belt pulleys and a flat belt, the two belt pulleys are connected with one of the output shafts of the double-shaft servo motor 51 and the three-jaw chuck 3 respectively, and the flat belt is wound between the two belt pulleys.

[0035] The detection mechanism includes a cylinder 61, the cylinder 61 is mounted on the sliding frame 5, the cylinder 61 is provided with a mounting frame 62 on one side close to the three-jaw chuck 3, the mounting frame 62 is mounted with three electronic micrometers 63, the probes of the three electronic micrometers 63 slide through the cylinder 61 and are located in the internal cavity of the cylinder 61.

[0036] The contact mechanism includes a horizontal shaft 71, two horizontal shafts 71 are installed in the cylinder 61, a contact frame one 721 and a contact frame two 731 are slidably arranged between the two horizontal shafts 71, two springs one 722 are connected between the contact frame one 721 and the inner wall of the cylinder 61, two springs two 732 are connected between the contact frame two 731 and the inner wall of the cylinder 61, a contact frame three 741 is slidably arranged on one side of the cylinder 61 close to the three-jaw chuck 3, a spring three 742 is connected between the contact frame three 741 and the cylinder 61, the contact frame one 721, the contact frame two 731 and the contact frame three 741 all pass through the side of the cylinder 61, the contact frame one 721, the contact frame two 731 and the contact frame three 741 move and contact with the stepped portion on the rudder shaft body 4, the outer circle of the rudder shaft body 4 and the blind hole inner wall of the rudder shaft body 4 respectively, the probes of two electronic micrometers 63 are respectively abutted on the sides away from the contact frame one 721 and the contact frame two 731, the probe of the other electronic micrometer 63 is located on one side of the contact frame three 741, and the contact frame three 741 moves and contacts with the probe of the electronic micrometer 63.

[0037] The reset mechanism is arranged on the barrel 61 and is used to drive the contact frame one 721, the contact frame two 731 and the contact frame three 741 to move and reset. The reset mechanism comprises a rotating shaft 81, the rotating shaft 81 is rotatably arranged on the barrel 61 away from the three-jaw chuck 3, one end of the rotating shaft 81 is provided with a cam one 82, the cam one 82 is provided with a cam two 83 on the side wall, the cam one 82 and the cam two 83 are located in the barrel 61, the contact frame one 721 and the contact frame two 731 are rotatably provided with a roller one 821 on the side close to each other, the two roller ones 821 are in contact with the two sides of the cam one 82 respectively, and the contact frame three 741 is rotatably provided with a roller two 831, and the roller two 831 is in contact with the cam two 83.

[0038] The progressive mechanism is arranged on the base 1, the sliding frame 5 and the double-shaft servo motor 51, and is used to drive the detection mechanism to gradually move along the rudder shaft body 4. The progressive mechanism comprises two threaded rods 91, the two threaded rods 91 are rotatably arranged on the base 1, the bottom of the sliding frame 5 is connected with the two threaded rods 91 through threads, and the other output shaft of the double-shaft servo motor 51 is connected with the two threaded rods 91 through a transmission assembly two 92.

[0039] The transmission assembly two 92 is composed of three transmission wheels and a tooth belt, the three transmission wheels are respectively arranged on the other output shaft of the double-shaft servo motor 51 and the two threaded rods 91, and the three transmission wheels are provided with the tooth belt therebetween.

[0040] The driving mechanism is arranged on the base 1, the sliding frame 5 and the rotating shaft 81, and comprises a gear 111, the gear 111 is arranged on the rotating shaft 81, the sliding frame 5 is slidably provided with a rack 112, the rack 112 is in mesh with the gear 111, the rack 112 is rotatably provided with a roller shaft 113 at the lower part, the base 1 is provided with a vertical plate 114, and the vertical plate 114 is provided with a guide groove 115.

[0041] The guide groove 115 is composed of a long groove, a short groove and an inclined groove, the inclined groove is located between the long groove and the short groove, and the roller shaft 113 is located in the short groove.

[0042] The operator puts the rudder shaft body 4 into the three-jaw chuck 3, clamps the rudder shaft body 4 through the three-jaw chuck 3, realizes preliminary position correction, after clamping is completed, the operator starts the double-shaft servo motor 51, two output shafts of the double-shaft servo motor 51 rotate synchronously, one of the output shafts drives the three-jaw chuck 3 to rotate through the transmission assembly one 52, the other output shaft drives the two threaded rods 91 to rotate through the transmission assembly two 92, the two threaded rods 91 drive the slide frame 5, the cylinder 61, the mounting frame 62, the three electronic micrometers 63, the cross shaft 71, the contact frame one 721, the spring one 722, the contact frame two 731, the spring two 732, the contact frame three 741, the spring three 742, the rotating shaft 81, the cam one 82, the roller one 821, the cam two 83, the roller two 831, the rack 112 and the roller shaft 113 to move as a whole to the direction close to the rudder shaft body 4; initially, the spring one 722 and the spring two 732 are in compression state, and the spring three 742 is in stretching state, in the moving process, the roller shaft 113 moves from the short flat groove to the long flat groove through the inclined groove, the roller shaft 113 drives the rack 112 to move downwards, the rack 112 drives the gear 111 to rotate by ninety degrees, the gear 111 drives the rotating shaft 81, the cam one 82 and the cam two 83 to rotate by ninety degrees, under the action of the spring one 722, the spring two 732 and the spring three 742, the contact frame one 721 and the contact frame two 731 move to the direction close to each other, the contact frame three 741 moves upwards, the roller one 821 and the roller two 831 play a guiding role, the contact frame one 721 and the contact frame two 731 contact the stepped part on the rudder shaft body 4 and the outer circle of the rudder shaft body 4 respectively, after the contact frame three 741 moves, it contacts the inner wall of the blind hole at the end of the rudder shaft body 4, in the moving process of the contact frame one 721 and the contact frame two 731, the probes of two electronic micrometers 63 always contact the sides away from each other of the contact frame one 721 and the contact frame two 731 respectively, after the contact frame three 741 moves, it contacts the probe of the other electronic micrometer 63, while the rudder shaft body 4 rotates, the contact frame one 721, the contact frame two 731 and the contact frame three 741 also slowly move on the stepped part on the rudder shaft body 4, the outer circle of the rudder shaft body 4 and the inner wall of the blind hole at the end of the rudder shaft body 4 to the direction close to the three-jaw chuck 3, the electronic micrometer 63 collects displacement data in real time and transmits to the computer, realizes synchronous detection of the coaxialities of multiple key parts of the rudder shaft body 4, improves detection efficiency and accuracy.After the rudder shaft body 4 is inspected, the operator controls the two output shafts of the dual-axis servo motor 51 to rotate in opposite directions. One of the output shafts of the dual-axis servo motor 51 drives the two threaded rods 91 to rotate in opposite directions through the transmission assembly 92. The reverse rotation of the two threaded rods 91 drives the sliding frame 5, cylinder 61, mounting frame 62, three electronic dial indicators 63, horizontal shaft 71, contact frame 1 721, spring 1 722, contact frame 2 731, spring 2 732, contact frame 3 741, spring 3 742, rotating shaft 81, cam 1 82, roller 1 821, cam 2 83, roller 2 831, rack 112, and roller 113 to move away from the rudder shaft body 4 and reset. Roller 113 returns from the long horizontal groove to the short horizontal groove via the inclined groove. Roller 113 drives rack 112 to move upward. Rack 112 drives gear 111 to rotate 90 degrees in the opposite direction to reset. Gear 111 drives shaft 81, cam 1 82, and cam 2 83 to rotate 90 degrees in the opposite direction to reset. Contact frame 1 721 and contact frame 2 731 move away from each other. Under the guidance of roller 1 821, spring 1 722 and spring 2 732 return to the compressed state. Contact frame 3 741 moves downward. Roller 2 831 guides, and spring 3 742 returns to the stretched state. After the dual-axis servo motor 51 stops, the operator releases the three-jaw chuck 3 and removes the tested rudder shaft body 4.

[0043] Example 2: Based on Example 1, such as Figures 11-13 As shown, it also includes a positioning mechanism set on the fixed frame 2. The positioning mechanism is used to assist in the correction and fixation of the rudder shaft body 4. The positioning mechanism includes a positioning frame 101. A positioning frame 101 is slidably provided on the fixed frame 2. A fastening bolt 102 is threadedly connected to the positioning frame 101. The end of the fastening bolt 102 abuts against the side wall of the fixed frame 2.

[0044] When the rudder shaft body 4 is placed on the three-jaw chuck 3, the step of the rudder shaft body 4 contacts the positioning frame 101. The positioning frame 101 corrects the position of the rudder shaft body 4. After the three-jaw chuck 3 clamps the rudder shaft body 4, the operator rotates the fastening bolt 102 so that the fastening bolt 102 is no longer in contact with the fixing frame 2. Then, the positioning frame 101 and the fastening bolt 102 are moved downward, so that the positioning frame 101 is disengaged from the clamped rudder shaft body 4. After the rudder shaft body 4 is inspected and removed, the operator moves the positioning frame 101 and the fastening bolt 102 upward to reset. Then, the operator rotates the fastening bolt 102 in the opposite direction so that the fastening bolt 102 contacts the fixing frame 2 again, thereby fixing the position of the positioning frame 101.

[0045] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A detection device for a rudder shaft of a ship, characterized in that: The utility model provides a three jaw chuck detection device, including base (1), 0 and 0, one side of base (1) is equipped with a fixed frame (2), the fixed frame (2) is rotatably equipped with a three jaw chuck (3), the other side of base (1) is slidably equipped with a sliding frame (5), and the sliding frame (5) is equipped with detection mechanism, and the detection mechanism is provided with contact mechanism on it; A double-shaft servo motor (51) is installed on one side of the base (1) close to the fixed frame (2), and one of the output shafts of the double-shaft servo motor (51) is connected with the three jaw chuck (3) through a transmission assembly one (52); The detection mechanism includes a cylinder (61) mounted on the sliding frame (5), and the cylinder (61) is provided with a mounting bracket (62) on one side close to the three jaw chuck (3), and three electronic micrometers (63) are mounted on the mounting bracket (62). The probes of the three electronic micrometers (63) slide through the cylinder (61) and are located in the internal cavity of the cylinder (61). The contact mechanism includes a horizontal shaft (71), two horizontal shafts (71) are installed in the cylinder (61), and a contact frame one (721) and a contact frame two (731) are slidably arranged between the two horizontal shafts (71). Two springs one (722) are connected between the contact frame one (721) and the inner wall of the cylinder (61), two springs two (732) are connected between the contact frame two (731) and the inner wall of the cylinder (61), a contact frame three (741) is slidably arranged on one side of the cylinder (61) close to the three jaw chuck (3), and a spring three (742) is connected between the contact frame three (741) and the cylinder (61). It also includes a reset mechanism, which includes a rotating shaft (81) rotatably arranged on one side of the cylinder (61) away from the three jaw chuck (3), a cam one (82) mounted on one end of the rotating shaft (81), a cam two (83) mounted on the side wall of the cam one (82), and the cam one (82) and the cam two (83) located in the cylinder (61). A roller one (821) is rotatably arranged on one side of the contact frame one (721) and the contact frame two (731) close to each other, and the two roller ones (821) are in contact with the two sides of the cam one (82) respectively. A roller two (831) is rotatably arranged on the contact frame three (741), and the roller two (831) is in contact with the cam two (83). It also includes a gradual mechanism, which includes two threaded rods (91) rotatably arranged on the base (1), and the sliding frame (5) is connected with the two threaded rods (91) through threads. A transmission assembly two (92) is connected between the other output shaft of the double-shaft servo motor (51) and the two threaded rods (91).

2. A detection device for a rudder shaft of a marine vessel as claimed in claim 1, characterized in that: The transmission assembly two (92) is composed of three transmission wheels and a toothed belt, and the three transmission wheels are respectively mounted on the other output shaft of the double-shaft servo motor (51) and the two threaded rods (91). A toothed belt is wound between the three transmission wheels.

3. A detection device for a rudder shaft of a marine vessel as claimed in claim 1, characterized in that: It also includes a positioning mechanism, the positioning mechanism includes a positioning frame (101), fixed frame (2) on the sliding type is equipped with a positioning frame (101), positioning frame (101) is connected with a fastening bolt (102) through the thread, the end of the fastening bolt (102) against the fixed frame (2) side wall.

4. A detection device for a rudder shaft of a marine vessel as claimed in claim 3, characterized in that: It also includes a drive mechanism, the drive mechanism includes a gear (111), the rotating shaft (81) is installed with a gear (111), the sliding frame (5) on the sliding type is equipped with a rack (112), the rack (112) and the gear (111) meshing, the rack (112) lower part rotatably provided with a roller (113), the base (1) is installed with a vertical plate (114), the vertical plate (114) is opened in a guide slot (115).

5. A detection device for a rudder shaft of a marine vessel as claimed in claim 4, characterized in that: The guide slot (115) is composed of a long slot, a short slot and an inclined slot, the inclined slot is located between the long slot and the short slot, and the roller (113) is located in the short slot.

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