A swing test device for marine equipment

Abstract

The present invention relates to a sway test device for marine equipment. The test device comprises a bottom plate, on which a base is rotatably mounted, a driving mechanism is provided on the base, the test device comprises a test bench, the four corners of the test bench are respectively connected to the base through a servo telescopic cylinder, the upper end of the servo telescopic cylinder is connected to the test bench ball joint, the lower end of the servo telescopic cylinder is connected to the base through a universal joint, and the test device also comprises an auxiliary support, the lower end of the auxiliary support is connected to the base, and the upper end is hinged to the test bench. When the present invention is used, the driving mechanism drives the base to rotate, and the base drives the test bench to achieve bow sway; the servo telescopic cylinder and the auxiliary support jointly drive the test bench to achieve roll and pitch. The present invention can achieve roll, pitch and bow sway, and can more realistically simulate the use scenario of marine equipment. At the same time, bow sway, pitch and roll can be compounded at the same time, or can be a single independent movement, which can more realistically simulate the actual use scenario and working condition of marine equipment.

Description

Technical Field

[0001] The invention relates to the technical field of ships, and in particular to a sway test device for ship equipment. Background Art

[0002] When a ship is sailing at sea, due to external or internal forces, the buoyancy and gravity are not in line when the ship is floating upright, which will cause the ship to roll, pitch and bow, and the drafts on both sides will be different, causing the ship to tilt or heel. The swaying characteristics will cause the marine rotating mechanical power equipment to show different dynamic characteristics, affecting its stability and reliability, and even inducing failures.

[0003] In order to make the marine rotating mechanical power equipment work normally under the conditions of pitch, roll and bow pitch, test equipment is needed to carry out tests and verifications, so as to provide a basis for the design and manufacture of marine mechanical equipment.

[0004] The Chinese invention patent application with application publication number CN101221094A discloses a marine equipment sway and tilt test device and a control method thereof, the test device comprises a chassis, a pitch platform and a roll platform arranged in sequence from top to bottom, the pitch platform is movably connected with a pitch rotation axis, the two ends of the pitch rotation axis are located at the left and right sides of the pitch platform and are respectively movably connected with the upper end of the longitudinally arranged pitch support fixed at the lower end on the chassis, the roll platform is movably connected with a roll rotation axis, the two ends of the roll rotation axis are located at the front and rear sides of the roll platform and are respectively movably connected with the lower end, and the hydraulic station provides power and control. However, in order to realize the roll and pitch, the test device is respectively provided with a roll platform, a roll hydraulic cylinder, a pitch platform and a pitch hydraulic cylinder, and the structure is complicated; and the two platforms increase the difficulty of operation. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a marine equipment swing test device to solve the technical problems that the existing marine equipment swing test device has a complex structure and is difficult to operate.

[0006] The technical solution of the marine equipment swing test device of the present invention is:

[0007] A marine equipment sway test device includes a base plate, on which a base with a rotation axis extending in an up-down direction is rotatably mounted, and a driving mechanism for driving the base to rotate is provided on the base. The test device also includes a test bench located on the upper side of the base, and the four corners of the test bench are respectively connected to the base through a servo telescopic cylinder, the upper end of the servo telescopic cylinder is connected to the test bench by a ball joint, and the lower end of the servo telescopic cylinder is connected to the base through a universal joint. The test device also includes an auxiliary support for constraining the test bench, the lower end of the auxiliary support is fixedly connected to the base, and the upper end is hinged to the test bench.

[0008] As a further improvement of the above technical solution, the universal joint is a first Hooke's joint, which includes a first lower hinge seat, a first upper hinge body and a first connecting rod. The first lower hinge seat is fixedly connected to the base, the first upper hinge body is fixedly connected to the servo telescopic cylinder, the upper end of the first connecting rod is hinged to the first upper hinge body, and the lower end is hinged to the first lower hinge seat, and the rotation axis of the first connecting rod and the first lower hinge seat is perpendicular to the rotation axis of the first connecting rod and the first upper hinge body.

[0009] As a further improvement to the above technical solution, a ball joint seat is fixedly connected to the lower side of the test bench, and a ball head matching the ball joint seat is provided at the upper end of the servo telescopic cylinder.

[0010] As a further improvement to the above technical solution, the servo telescopic cylinder is a servo hydraulic cylinder.

[0011] As a further improvement to the above technical solution, the servo telescopic cylinder is provided with a displacement sensor for measuring the telescopic length of the servo telescopic cylinder.

[0012] As a further improvement to the above technical solution, the auxiliary support includes a telescopic rod and a support frame, the support frame is fixedly connected to the base, and the telescopic rod is fixedly mounted on the support frame.

[0013] As a further improvement of the above technical solution, the telescopic end of the telescopic rod is hinged to the test bench through a second Hooke's hinge, the second Hooke's hinge includes a second lower hinge seat, a second upper hinge body and a second connecting rod, the second lower hinge seat is fixedly connected to the base, the second upper hinge body is fixedly connected to the servo telescopic cylinder, the upper end of the second connecting rod is hinged to the second upper hinge body, and the lower end is hinged to the second lower hinge seat, and the rotation axis of the second connecting rod and the second lower hinge seat is perpendicular to the rotation axis of the second connecting rod and the second upper hinge body.

[0014] As a further improvement of the above technical solution, the driving mechanism includes a rotating shaft, a motor and a worm gear reducer transmission-connected to the motor, one end of the rotating shaft is fixedly connected to the output shaft of the worm gear reducer, and the other end is fixedly connected to the base plate.

[0015] As a further improvement of the above technical solution, the anti-rotation sleeve on the rotating shaft is provided with a connecting sleeve fixedly connected to the base, and the connecting sleeve is provided with a plane bearing and a connecting ring in sequence from top to bottom, the connecting ring is fixedly connected to the base, the upper end face of the plane bearing is fixedly connected to the connecting sleeve, and the lower end face is fixedly connected to the connecting ring.

[0016] The present invention provides a marine equipment sway test device, which has the following beneficial effects compared with the prior art:

[0017] When the marine equipment sway test device of the present invention is used, the driving mechanism drives the base to rotate, and the base drives the test bench to achieve bow roll; the servo telescopic cylinder and the auxiliary support channel work together to drive the test bench to achieve roll and pitch. The marine equipment sway test device of the present invention can achieve roll, pitch and bow roll, and can more realistically simulate the use scenario of marine equipment. At the same time, using the marine equipment sway test device of the present invention, bow roll, pitch and roll can be compounded at the same time, or can be a single independent movement, which can more realistically simulate the actual use scenario and working condition of marine equipment. Through this test device, the working characteristics of marine equipment under roll, pitch and bow roll conditions can be obtained, providing a basis for the design and manufacture of marine equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The structure of the marine equipment swing test device of the present invention is shown in FIG. Figure 1 ;

[0019] Figure 2 The structure of the marine equipment swing test device of the present invention is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a structural schematic diagram of a test bench in a marine equipment swing test device of the present invention;

[0021] Figure 4 It is a structural schematic diagram of a servo hydraulic cylinder in a marine equipment swing test device of the present invention;

[0022] Figure 5 It is a structural schematic diagram of a Hooke's hinge in a marine equipment swing test device of the present invention;

[0023] Figure 6 It is a schematic diagram of the assembly of the base and the bottom plate in the marine equipment sway test device of the present invention;

[0024] Figure 7 yes Figure 6 A cross-sectional view of the base and the bottom plate in FIG.

[0025] Figure 8 It is a structural schematic diagram of a bottom plate in a marine equipment sway test device of the present invention;

[0026] Fig. 9 It is a structural schematic diagram of a base in a marine equipment sway test device of the present invention;

[0027] Fig.10 It is a structural schematic diagram of a driving mechanism in a marine equipment swing test device of the present invention;

[0028] Fig.11 yes Fig.10 The structural diagram of the motor and reducer in FIG.

[0029] Fig.12 yes Fig.10 A schematic diagram of the structure of the rotating shaft in FIG.

[0030] Fig.13 yes Fig.10 Schematic diagram of the assembly of the connecting sleeve, the plane bearing and the connecting ring;

[0031] Fig.14 yes Fig.10 A schematic diagram of the structure of the connecting sleeve in FIG.

[0032] Fig.15 yes Fig.10 A schematic diagram of the structure of the connecting ring in FIG.

[0033] Fig.16 It is a structural schematic diagram of the auxiliary support in the marine equipment sway test device of the present invention;

[0034] In the figure: 1, bottom plate; 2, base; 3, air spring; 4, benchmark; 5, motor; 6, worm gear reducer; 61, socket; 7, reducer fixing seat; 8, rotating shaft; 81, small diameter section; 82, large diameter section; 83, connecting flange; 84, connecting key; 9, fixing plate; 10, connecting sleeve; 101 horizontal part; 102, vertical part; 11, plane thrust ball bearing; 12, connecting ring; 121, flange; 13, mounting plate; 14, platform Step hole; 15, fixing block; 16, test bench; 161, fixing hole; 17, servo hydraulic cylinder; 18, first Hooker hinge; 181, first lower hinge seat; 182, first connecting rod; 183, first upper hinge body; 19, cushion block; 20, support plate; 21, ball head seat; 22, fixing hole; 23, avoidance groove; 24, through hole; 25, support frame; 26, telescopic rod; 27 second lower hinge seat; 28, second connecting rod; 29, second upper hinge body. DETAILED DESCRIPTION

[0035] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] The specific embodiment of the marine equipment sway test device of the present invention is as follows: Figure 1 , Figure 2As shown, it includes a base plate 1, a base 2, a driving mechanism and a test bench 16. The base 2 is rotatably mounted on the base plate 1, and the rotation axis of the base 2 extends in the up-down direction. The driving mechanism is used to drive the base 2 to rotate relative to the base plate 1. Two parallel and spaced fixed blocks 15 are fixedly connected to the base 2, and the two ends of the fixed block 15 are respectively fixedly connected with a servo telescopic cylinder extending upward. Preferably, the servo telescopic cylinder is a servo hydraulic cylinder 17. The upper end of the servo hydraulic cylinder 17 is connected to the test bench 16.

[0037] Specifically, the lower end of the servo hydraulic cylinder 17 is fixedly connected to the base through the first Hooke's hinge 18, so that the servo hydraulic cylinder 17 can swing within a certain angle when extending and retracting. Figure 4 , Figure 5 As shown, the first Hooke's hinge 18 includes a first lower hinge seat 181, a first upper hinge body 183 and a first connecting rod 182, and the first lower hinge seat 181 is fixedly connected to the fixed block. The first lower hinge seat 181 includes two parallel connecting ears, and the connecting ears have a hinge hole. The first connecting rod 182 is hinged between the two connecting ears through a hinge rod. The first upper hinge body 183 has two, and the two first upper hinge bodies 183 are hinged on both sides of the first connecting rod 182. The rotation axis of the first upper hinge body 183 and the first connecting rod 182 and the rotation axis of the first connecting rod 182 and the first lower hinge seat 181 are perpendicular. The first upper hinge body 183 is fixedly connected to the lower end of the servo hydraulic cylinder 17 by bolts.

[0038] Reference Figure 3 As shown, the upper end of the servo hydraulic cylinder 17 is connected to the lower side of the test bench 16 by a ball joint. Specifically, the upper end of the servo hydraulic cylinder 17 has a stud, and a ball head is threadedly connected to the stud. A ball head seat 21 matching the ball head has two ears, and a fixing hole 22 is opened on the ear. The lower side of the test bench 16 has a fixing hole 161 corresponding to the fixing hole.

[0039] A displacement sensor is installed on the servo hydraulic cylinder 17 . When the servo hydraulic cylinder 17 is extended or retracted, the displacement sensor can detect the extension length of the servo hydraulic cylinder 17 , thereby accurately controlling the extension length of the servo hydraulic cylinder 17 .

[0040] like Fig.16As shown, the base is also fixedly connected with an auxiliary support for constraining the freedom of the test bench 16. The auxiliary support includes a telescopic rod 26 and a support frame 25 supported at the bottom of the telescopic rod 26. The bottom of the support frame 25 is fixedly connected to the base by screws, the telescopic rod 26 and the support frame 25 are connected and fixed by a flange, and the top of the telescopic rod 26 is connected and fixed to the test bench 16 by a second Hooke's hinge. The second Hooke's hinge includes a second lower hinge seat 27, a second upper hinge body 29 and a second connecting rod 28. The second lower hinge seat 27 is fixedly connected to the telescopic rod 26, the second upper hinge body 29 is fixedly connected to the swing platform, the upper end of the second connecting rod 28 is hinged to the second upper hinge body 29, and the lower end is hinged to the second lower hinge seat 27. The rotation axis of the second connecting rod 28 and the second lower hinge seat 27 and the rotation axis of the second connecting rod 28 and the second upper hinge body 29 are perpendicular. The second Hooke's hinge enables the test bench to swing around the top of the auxiliary support in the left and right directions and the front and back directions. In this embodiment, the telescopic rod 26 is a jack.

[0041] like Figure 6 , Figure 7 , Figure 8 As shown, the bottom plate 1 includes a frame and a panel fixedly connected to the upper side of the frame. The panel has a through hole at the center thereof penetrating the upper and lower sides of the panel, and a mounting plate is fixedly connected in the through hole. The mounting plate is provided with a step hole 14 penetrating the upper and lower sides of the mounting plate, and a plurality of fixing bolts are installed on the steps of the step hole 14. The panel is fixedly connected to the two sides of the step hole 14 with the mark rods 4 extending upward.

[0042] Reference Fig. 9 As shown, the base 2 includes a frame and an outer plate wrapped around the outside of the frame, and a through hole 24 is provided at the center of the upper outer plate, penetrating the upper and lower sides of the base 2, and the through hole 24 is correspondingly connected to the step hole 14 on the bottom plate 1. The outer plate has avoidance grooves on both sides of the through hole 24 for the pole 4 on the bottom plate 1 to pass upward.

[0043] In this embodiment, the base 2 and the bottom plate 1 are rotatably assembled through a bearing. Specifically, a fixing plate 9 is installed in the through hole of the bottom plate 1, a through hole is opened in the center of the fixing plate 9, and a connecting sleeve 10 is fixedly connected to the lower side of the fixing plate 9 by bolts. Fig.14 As shown, the connecting sleeve 10 is a T-shaped structure. The T-shaped connecting sleeve 10 includes a horizontal portion 101 and a vertical portion 102. The horizontal portion 101 has a plurality of fixing holes arranged circumferentially and penetrating the horizontal portion 101 vertically. Bolts for connecting with the fixing plate 9 are installed in the fixing holes. The center hole of the connecting sleeve 10 and the through hole of the fixing plate 9 are equidiametrically connected. A plane bearing is mounted on the vertical portion 102 of the connecting sleeve 10. Preferably, the plane bearing is a plane thrust ball bearing 11. In other embodiments, the plane thrust ball bearing can also be replaced by a plane roller bearing. The upper end surface of the plane thrust ball bearing 11 is fixedly connected to the horizontal portion 101 of the connecting sleeve 10 by bolts.

[0044] A connecting ring 12 is fixedly connected to the step hole 14 of the bottom plate 1 by bolts. Fig.13 , 15 As shown, the connecting ring 12 is embedded in the large diameter section of the step hole 14, and the center of the connecting ring 12 has a center hole that is equal in diameter to the small diameter section of the step hole 14. The vertical portion 102 of the connecting sleeve 10 is embedded in the center hole of the connecting ring 12 and the small diameter section of the step hole 14. The outer peripheral wall of the connecting ring 12 has a flange 13 extending upward, and an annulus is provided between the flange 13 and the connecting sleeve 10. The lower end of the plane thrust ball bearing 11 is embedded in the annulus, and the lower end face of the plane thrust ball bearing 11 is fixedly connected to the connecting ring 12 by bolts. The base 2 is relatively fixed to the upper end face of the plane thrust ball bearing 11, and the bottom plate 1 is opposite to the lower end face of the plane thrust ball bearing 11, so as to realize the rotational assembly of the base 2 and the bottom plate 1.

[0045] In this embodiment, the driving mechanism includes a motor 5, a reducer and a rotating shaft 8. Fig.10 , Fig.11 , Fig.12 As shown, the motor 5 is connected to the reducer in a transmission manner, and the reducer is a worm gear reducer 6. The worm gear reducer 6 is fixedly connected to the base 2 through a reducer fixing seat 7, and the reducer fixing seat 7 includes a bottom plate 1, a vertical plate, and a reinforcing plate connected between the bottom plate 1 and the vertical plate. The bottom plate 1 has a connecting hole fixedly connected to the base 2, and the vertical plate has a fixing hole fixedly connected to the worm gear reducer 6. The worm gear reducer 6 is connected to the rotating shaft 8 through a key, and the output end of the worm gear reducer 6 has a socket 61, and the socket 61 has a keyway, and the rotating shaft 8 has a connecting key 84 matching the keyway. In this embodiment, the rotating shaft 8 is a variable diameter shaft, and the rotating shaft 8 includes a large diameter section, a small diameter section, and a connecting flange 83 fixedly connected to the end of the large diameter section. The small diameter section of the rotating shaft 8 is fixedly matched with the worm gear reducer 6, and the keyway is axially arranged on the small diameter section of the rotating shaft 8. The large diameter section is inserted into the connecting sleeve 10. A fixing plate 15 is fixedly connected to the lower end of the base plate 1. The middle part of the fixing plate 15 has a positioning hole that matches the positioning protrusion on the lower side of the rotating shaft 8. The fixing plate 15 has a fixing hole that passes through the connecting hole of the connecting flange 83. The connecting flange 83 and the fixing plate 15 are fixed by bolts to achieve a fixed connection between the rotating shaft 8 and the base plate 1.

[0046] In this embodiment, the avoidance groove is an arc-shaped avoidance groove 23, so that when the driving mechanism drives the base 2 to rotate, the mark rod 4 can move in the base 2. The openings of the two arc-shaped avoidance grooves 23 on the base 2 are arranged opposite to each other, and a scale is fixedly connected to the groove edge of the arc-shaped avoidance groove 23. When the base 2 and the bottom plate 1 do not rotate relative to each other, the mark rod 4 corresponds to zero degree on the scale.

[0047] In this embodiment, the base 2 and the bottom plate 1 are both rectangular structures, and air springs 3 are respectively installed at the four corners of the rectangular bottom plate 1. A support plate 20 is arranged on the lower side of the bottom plate 1, and a cushion block 19 is provided at the position of the support plate corresponding to the air spring 3.

[0048] The working principle of the marine equipment sway test device of the present invention is as follows: the driving mechanism drives the base to rotate, and the base drives the test bench to achieve bow sway; the servo telescopic cylinder and the auxiliary support jointly drive the test bench to achieve roll and pitch. Specifically, the motor 5 drives the worm gear reducer 6 to rotate. Since the rotating shaft 8 is fixedly connected to the fixed bottom plate, the worm gear reducer 6 connected to the rotating shaft 8 rotates around the rotating shaft 8, and the base fixedly connected to the worm gear reducer 6 rotates around the rotating shaft 8. During the rotation of the base 2, the scale on the base 2 and the benchmark 4 move relative to each other, so that the rotation angle of the base 2 can be obtained. The servo telescopic cylinders 17 arranged at the four corners of the test bench 16 and the auxiliary support located on the lower side of the middle part of the test bench work together to achieve the roll and pitch of the test bench 16.

[0049] The present invention provides a marine equipment sway test device, which has the following advantages over the prior art: the marine equipment sway test device of the present invention can realize roll, pitch and bow, and can more realistically simulate the use scenario of marine equipment. At the same time, using the marine equipment sway test device of the present invention, bow, pitch and roll can be compounded at the same time, or can be a single independent movement, which can more realistically simulate the actual use scenario and working condition of marine equipment. The working characteristics of marine equipment under roll, pitch and bow conditions can be obtained through the test device, providing a basis for the design and manufacture of marine equipment.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A marine equipment swing test device, characterized in that: The test device comprises a bottom plate, on which a base with a rotation axis extending in the up-down direction is rotatably mounted, and a driving mechanism for driving the base to rotate is provided on the base. The test device also comprises a test bench located on the upper side of the base, and the four corners of the test bench are respectively connected to the base through a servo telescopic cylinder, the upper end of the servo telescopic cylinder is connected to the test bench ball joint, and the lower end of the servo telescopic cylinder is connected to the base through a universal joint. The test device also comprises an auxiliary support for constraining the test bench, the lower end of the auxiliary support is fixedly connected to the base, and the upper end is hinged to the test bench; The auxiliary support comprises a telescopic rod and a support frame, the support frame is fixedly connected to the base, and the telescopic rod is fixedly mounted on the support frame; The telescopic end of the telescopic rod is hinged to the test bench through a second Hooke's hinge, the second Hooke's hinge includes a second lower hinge seat, a second upper hinge body and a second connecting rod, the second lower hinge seat is fixedly connected to the base, the second upper hinge body is fixedly connected to the servo telescopic cylinder, the upper end of the second connecting rod is hinged to the second upper hinge body, and the lower end is hinged to the second lower hinge seat, and the rotation axis of the second connecting rod and the second lower hinge seat is perpendicular to the rotation axis of the second connecting rod and the second upper hinge body.

2. The marine equipment sway test device according to claim 1, characterized in that: The universal joint is a first Hooke's joint, which includes a first lower hinge seat, a first upper hinge body and a first connecting rod. The first lower hinge seat is fixedly connected to the base, the first upper hinge body is fixedly connected to the servo telescopic cylinder, the upper end of the first connecting rod is hinged to the first upper hinge body, and the lower end is hinged to the first lower hinge seat, and the rotation axis of the first connecting rod and the first lower hinge seat is perpendicular to the rotation axis of the first connecting rod and the first upper hinge body.

3. The marine equipment sway test device according to claim 1, characterized in that: A ball head seat is fixedly connected to the lower side of the test bench, and a ball head matching the ball head seat is arranged at the upper end of the servo telescopic cylinder.

4. The marine equipment sway test device according to claim 1, characterized in that: The servo telescopic cylinder is a servo hydraulic cylinder.

5. The marine equipment sway test device according to claim 1, characterized in that: The servo telescopic cylinder is provided with a displacement sensor for measuring the telescopic length of the servo telescopic cylinder.

6. The marine equipment sway test device according to any one of claims 1 to 5, characterized in that: The driving mechanism comprises a rotating shaft, a motor and a worm gear reducer transmission-connected to the motor. One end of the rotating shaft is rotationally fixedly connected to the output shaft of the worm gear reducer, and the other end is fixedly connected to the base plate.

7. The marine equipment sway test device according to claim 6, characterized in that: The anti-rotation sleeve on the rotating shaft is provided with a connecting sleeve fixedly connected to the base, and the connecting sleeve is provided with a plane bearing and a connecting ring in sequence from top to bottom, the connecting ring is fixedly connected to the base, the upper end surface of the plane bearing is fixedly connected to the connecting sleeve, and the lower end surface is fixedly connected to the connecting ring.

Images