A wheel-supported stern shaft anti-impact detection device

Abstract

The invention discloses a wheel-supported stern shaft anti-impact detection device, which relates to the technical field of stern shaft detection, and comprises a box body, a cylinder is installed on the top of the box body, an impact block is connected to the telescopic end of the cylinder, two groups of bases are symmetrically arranged on the inner wall of the bottom end of the box body, two groups of support rollers symmetrically arranged inside the two groups of bases are rotatably connected to the two groups of bases, a rotating shaft is connected between the support rollers of the two groups of bases on the same axis, an orientation adjustment mechanism is connected to one end of a group of support rollers on one group of the bases, and a pressing mechanism is arranged on the outer wall of the telescopic end of the cylinder. When the stern shaft is impacted, the invention can avoid the phenomenon of rolling deviation of the stern shaft, and after each impact, the stern shaft will automatically switch to different orientations for anti-impact detection.

Description

Technical Field

[0001] The invention relates to the technical field of stern shaft detection, and in particular to a wheel-supported stern shaft anti-impact detection device. Background Art

[0002] The stern shaft is called the tail shaft in the industry. One end of the tail shaft is connected to the propeller, and the other end is connected to the gearbox or coupling and then to the engine. The tail shaft of a large ship is installed on two bearings, one is called the tail bearing, which is the part of the hull that contacts the water, and the other is called the front bearing, which is connected to the engine room. Since ships may run aground when sailing, if there is a quality problem with the stern shaft, it is very easy to collide with the stern shaft at the bottom of the ship after running aground, causing the stern shaft to break, causing the ship to lose its mobility and unable to continue sailing. Therefore, the stern shaft needs to be tested for impact resistance after production. By applying a certain impact force to the surface of the stern shaft, it is tested whether the quality of the stern shaft meets the standard. Only qualified stern shafts can be installed and used. The impact resistance test of the stern shaft is an indispensable test indicator in the production and processing process.

[0003] The existing stern shaft anti-impact test usually supports the stern shaft and uses an impact device to apply impact force for testing. However, during the impact process, since the surface of the stern shaft is a curved surface, it is easy to cause the stern shaft to roll and deviate at the moment of impact, resulting in reduced impact detection effect and inaccurate detection results. In addition, when performing multiple orientation tests, the stern shaft needs to be manually rotated after an impact to switch the force orientation, which is troublesome to operate. Summary of the invention

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. Specifically, the purpose of the present invention is to provide a wheel-supported stern shaft anti-impact detection device to solve the problems mentioned in the above background technology that impacts can easily cause rolling deviation of the stern shaft and that manual adjustment of the stern shaft force surface is troublesome when replacing it.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wheel-supported stern shaft anti-impact detection device, comprising a box body, a cylinder is installed on the top of the box body, the telescopic end of the cylinder is connected to an impact block, two groups of bases are symmetrically arranged on the inner wall of the bottom end of the box body, two groups of support rollers are symmetrically arranged inside the two groups of bases and are rotatably connected to them, a rotating shaft is connected between the support rollers of the two groups of bases located on the same axis, one end of a group of support rollers on one of the bases is connected to an azimuth adjustment mechanism, and a pressing mechanism is arranged on the outer wall of the telescopic end of the cylinder.

[0006] Preferably, the orientation adjustment mechanism includes a connecting shaft connected to one end of the supporting roller, the outer wall of the connecting shaft is sleeved with a rotating wheel, the outer wall of the connecting shaft is provided with limiting plates at both ends of the rotating wheel, a ratchet mechanism is provided between the connecting shaft and the rotating wheel, the outer wall of the rotating wheel is provided with a guide groove, and an auxiliary drive assembly is provided on one side of the supporting roller.

[0007] Preferably, the guide groove is obliquely opened on the outer wall of the rotating wheel.

[0008] Preferably, the auxiliary drive assembly includes an elastic telescopic part fixed to the inner wall of the bottom end of the box body, the top of the elastic telescopic part is connected to a connecting plate, the side wall of the box body is provided with an inner rod below the connecting plate, the outer wall of the inner rod is provided with an outer rod slidably matched with the inner rod, a connecting rod is hinged between the outer rod and the connecting plate, and the top of the outer rod is provided with a guide column slidably matched with the guide groove.

[0009] Preferably, the elastic telescopic part includes a cylinder fixed on the inner wall of the bottom end of the box body, the inner wall of the bottom end of the cylinder is connected to a return spring, the top of the return spring is connected to a slider that slides with the cylinder, the top of the slider is connected to a connecting column, and the top of the connecting column is connected to the bottom of the connecting plate.

[0010] Preferably, the pressing mechanism includes a fixing plate fixedly arranged on the outer wall of the telescopic end of the cylinder, and a pressing column located above the connecting plate is arranged at the bottom of the fixing plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The present invention arranges four groups of support rollers and places the stern shaft in the middle of the four groups of support rollers. Since the stern shaft is limited by the support rollers on both sides, the stern shaft will not roll and deviate when impacted, thereby ensuring the accuracy of the result after the impact resistance test of the stern shaft.

[0013] The present invention provides an azimuth adjustment mechanism. During the process of the cylinder extending and retracting once, the pressure column presses the connecting plate after it descends. The connecting plate drives the connecting column to move downward and causes the slider to slide downward in the cylinder. The slider squeezes the reset spring. At the same time, the connecting plate pushes the outer rod to slide rightward on the outer wall of the inner rod through the connecting rod. The guide column at the top of the outer rod slides in the guide groove. The extension and retraction distance of the cylinder is fixed, so that the movement distance of the outer rod is fixed. The guide column will slide to the end of the guide groove. Under the action of the ratchet mechanism, the guide column drives the rotating wheel to rotate clockwise on the outer wall of the connecting shaft. After the azimuth impact is completed, , the reset spring makes the connecting rod pull the outer rod back, otherwise the guide column will slide in the guide groove in the opposite direction. Under the action of the ratchet mechanism, the rotating wheel will drive the support roller to rotate counterclockwise. Since the two groups of support rollers on the same axis are connected by the rotating shaft, the two groups of support rollers rotate synchronously and the rotation angle is constant. The rotation angle can be changed according to the size of the stern shaft by replacing the rotating wheels with different angles of the guide groove. The two groups of support rollers drive the stern shaft to rotate a certain angle. After each impact, the stern shaft will rotate a certain angle, so as to switch the stern shaft to different positions for anti-impact testing, so that the anti-impact testing is more comprehensive.

[0014] In the present invention, during each impact, the rotation angle of the stern shaft can be changed according to the size of the stern shaft by replacing the rotating wheel with different guide groove opening angles, and the stern shaft will automatically adjust its position, so as to facilitate impact detection of the stern shaft in different positions, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front cross-sectional structural schematic diagram of the present invention;

[0016] Figure 2 It is a schematic diagram of the top view of the base and the support roller of the present invention;

[0017] Figure 3 For the present invention Figure 1 A in the enlarged view;

[0018] Figure 4 It is a schematic diagram of the side cross-sectional structure of the rotating wheel of the present invention;

[0019] Figure 5 It is a side structural schematic diagram of the auxiliary drive assembly of the present invention.

[0020] In the figure: 1. box body; 2. cylinder; 3. impact block; 4. base; 5. support roller; 6. rotating shaft; 7. connecting shaft; 8. rotating wheel; 9. limit plate; 10. ratchet mechanism; 11. guide groove; 12. cylinder; 13. return spring; 14. slider; 15. connecting column; 16. connecting plate; 17. inner rod; 18. outer rod; 19. connecting rod; 20. guide column; 21. fixing plate; 22. pressure column. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 5 The present invention provides a technical solution: a wheel-supported stern shaft anti-impact detection device, comprising a box body 1, a cylinder 2 is installed on the top of the box body 1, an impact block 3 is connected to the telescopic end of the cylinder 2, two groups of bases 4 are symmetrically arranged on the inner wall of the bottom end of the box body 1, two groups of support rollers 5 rotatably connected to the two groups of bases 4 are symmetrically arranged inside the two groups of bases 4, a rotating shaft 6 is connected between the support rollers 5 on the coaxial line of the two groups of bases 4, one end of a group of support rollers 5 on a group of bases 4 is connected to an orientation adjustment mechanism, and a pressing mechanism is arranged on the outer wall of the telescopic end of the cylinder 2.

[0023] The orientation adjustment mechanism includes a connecting shaft 7 connected to one end of the supporting roller 5, a rotating wheel 8 is sleeved on the outer wall of the connecting shaft 7, limiting plates 9 are arranged at both ends of the outer wall of the connecting shaft 7, a ratchet mechanism 10 is arranged between the connecting shaft 7 and the rotating wheel 8, a guide groove 11 is opened on the outer wall of the rotating wheel 8, and an auxiliary driving component is arranged on one side of the supporting roller 5.

[0024] The guide groove 11 is obliquely opened on the outer wall of the rotating wheel 8 .

[0025] The auxiliary drive assembly includes an elastic telescopic part fixed to the inner wall of the bottom end of the box body 1, and the top of the elastic telescopic part is connected to a connecting plate 16. The side wall of the box body 1 is provided with an inner rod 17 below the connecting plate 16, and the outer wall of the inner rod 17 is provided with an outer rod 18 that slides with it. A connecting rod 19 is hinged between the outer rod 18 and the connecting plate 16, and the top of the outer rod 18 is provided with a guide column 20 that slides with the guide groove 11.

[0026] The elastic telescopic part includes a cylinder 12 fixed on the inner wall of the bottom end of the box body 1, the inner wall of the bottom end of the cylinder 12 is connected to a return spring 13, the top of the return spring 13 is connected to a slider 14 that slides with the cylinder 12, the top of the slider 14 is connected to a connecting column 15, and the top of the connecting column 15 is connected to the bottom of the connecting plate 16.

[0027] The pressing mechanism includes a fixing plate 21 fixedly arranged on the outer wall of the telescopic end of the cylinder 2 , and a pressing column 22 located above the connecting plate 16 is arranged at the bottom of the fixing plate 21 .

[0028] Working principle: When using the wheel-supported stern shaft anti-impact detection device, first, when performing anti-impact detection on a stern shaft, control the cylinder 2 to indirectly extend and retract, and the cylinder 2 drives the impact block 3 to impact the stern shaft placed on the support roller 5;

[0029] Then, by placing the stern shaft in the middle of the four groups of support rollers 5, since the stern shaft is limited by the support rollers 5 on both sides, the stern shaft will not roll when impacted, thereby ensuring the accuracy of the results after the stern shaft impact resistance test.

[0030] Finally, during the process of the cylinder 2 extending and retracting once, the telescopic end of the cylinder 2 drives the fixed plate 21 to descend, and the fixed plate 21 drives the pressure column 22 to descend. After descending, the pressure column 22 presses the connecting plate 16, and the connecting plate 16 drives the connecting column 15 to move downward and causes the slider 14 to slide downward in the cylinder 12, and the slider 14 squeezes the reset spring 13. At the same time, the connecting plate 16 pushes the outer rod 18 to slide to the right on the outer wall of the inner rod 17 through the connecting rod 19, and the guide column 20 at the top of the outer rod 18 slides in the guide groove 11, wherein the telescopic distance of the cylinder 2 is fixed, so that the moving distance of the outer rod 18 is fixed, and the guide column 20 will slide to the end of the guide groove 11, and under the action of the ratchet mechanism 10, the guide column 20 drives the rotating wheel 8 to rotate clockwise on the outer wall of the connecting shaft 7, and the impact in this direction After completion, the cylinder 2 drives the impact block 3 to reset, and the fixed plate 21 and the pressure column 22 are reset accordingly. Due to the large elastic force of the reset spring 13, the connecting rod 19 pulls back the outer rod 18, and vice versa, the guide column 20 will slide reversely in the guide groove 11. Under the action of the ratchet mechanism 10, the rotating wheel 8 will drive the supporting roller 5 to rotate counterclockwise. Since the two groups of supporting rollers 5 on the coaxial line are connected by the rotating shaft 6, the two groups of supporting rollers 5 rotate synchronously, and the rotation angle is constant. The rotation angle can be replaced according to the size of the stern shaft by replacing the rotating wheel 8 with different angles in the guide groove 11. The two groups of supporting rollers 5 drive the stern shaft to rotate a certain angle. After each impact, the stern shaft will rotate a certain angle, thereby switching the stern shaft to different positions for impact resistance detection, so that the impact resistance detection is more comprehensive.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wheel-supported stern shaft anti-impact detection device, comprising a box (1), characterized in that: A cylinder (2) is installed on the top of the box body (1), and the telescopic end of the cylinder (2) is connected to an impact block (3). Two groups of bases (4) are symmetrically arranged on the inner wall of the bottom end of the box body (1), and two groups of support rollers (5) rotatably connected thereto are symmetrically arranged inside the two groups of bases (4). A rotating shaft (6) is connected between the support rollers (5) on the coaxial line of the two groups of bases (4), and one end of a group of support rollers (5) on one group of bases (4) is connected to an orientation adjustment mechanism, and a pressing mechanism is arranged on the outer wall of the telescopic end of the cylinder (2); The orientation adjustment mechanism comprises a connecting shaft (7) connected to one end of the support roller (5); a rotating wheel (8) is sleeved on the outer wall of the connecting shaft (7); limit plates (9) are arranged at both ends of the rotating wheel (8) on the outer wall of the connecting shaft (7); a ratchet mechanism (10) is arranged between the connecting shaft (7) and the rotating wheel (8); a guide groove (11) is formed on the outer wall of the rotating wheel (8); and an auxiliary driving component is arranged on one side of the support roller (5); The auxiliary drive assembly comprises an elastic telescopic member fixed to the inner wall of the bottom end of the box body (1), the top of the elastic telescopic member is connected to a connecting plate (16), the side wall of the box body (1) is provided with an inner rod (17) below the connecting plate (16), the outer wall of the inner rod (17) is provided with an outer rod (18) slidably engaged with the inner rod (17), a connecting rod (19) is hinged between the outer rod (18) and the connecting plate (16), and the top of the outer rod (18) is provided with a guide column (20) slidably engaged with the guide groove (11); The pressing mechanism comprises a fixing plate (21) fixedly arranged on the outer wall of the telescopic end of the cylinder (2), and a pressing column (22) located above the connecting plate (16) is arranged at the bottom of the fixing plate (21).

2. The wheel-supported stern shaft anti-impact detection device according to claim 1 is characterized in that: The guide groove (11) is obliquely opened on the outer wall of the rotating wheel (8).

3. The wheel-supported stern shaft anti-impact detection device according to claim 1 is characterized in that: The elastic telescopic member comprises a cylinder (12) fixed to the inner wall of the bottom end of the box body (1); the inner wall of the bottom end of the cylinder (12) is connected to a return spring (13); the top of the return spring (13) is connected to a slider (14) slidably engaged with the cylinder (12); the top of the slider (14) is connected to a connecting column (15); the top of the connecting column (15) is connected to the bottom of a connecting plate (16).

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