CN114813034B

CN114813034B - Oblique automatic magnetic control slamming water-entering test device

Info

Publication number: CN114813034B
Application number: CN202210332531.5A
Authority: CN
Inventors: 孔祥韶; 许崇喜; 王一雯; 张涵韬; 翟金柱; 吴卫国
Original assignee: Wuhan University of Technology WUT
Current assignee: Wuhan University of Technology WUT
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2023-06-20
Anticipated expiration: 2042-03-30
Also published as: CN114813034A

Abstract

The invention relates to an oblique automatic magnetic control slamming water-entering test device, which comprises two L-shaped slotted guide rails, wherein inclined rails capable of sliding along the slotted guide rails are arranged on the slotted guide rails, heavy casters capable of braking and sliding along the slotted guide rails are arranged at two ends of each inclined rail, a slidable rigid frame is arranged on each inclined rail, a clamping and releasing device is arranged at the lower end of each rigid frame, an angle adjusting device is arranged at the lower part of each clamping and releasing device, lifting of each rigid frame is controlled by a winch device, and the rigid frame provides power for sliding along each inclined rail by a power device; the clamping release device comprises a sucker type electromagnet and a control remote switch, and the sucker type electromagnet is fixedly arranged at the bottom of the flat plate; the angle adjusting device comprises a clamp bracket. The invention can make the model obtain larger water entering speed in shorter travel, improve the accuracy of the water entering position of the model, and make the model slam into water with different transverse inclination angles and longitudinal inclination angles.

Description

Oblique automatic magnetic control slamming water-entering test device

Technical Field

The invention relates to the field of slamming water test devices, in particular to an oblique automatic magnetic control slamming water test device.

Background

When a ship encounters a large wave when traveling on the sea, the wave can cause a severe slamming phenomenon on the hull. Depending on the location of the wave slamming action, it is generally classified as out-of-band slamming, bilge slamming, side platform slamming, and wet deck slamming of a multi-hulled vessel, etc. The strong slamming action can result in damage to the local structure of the hull and even loss of strength of the main hull. The slamming problem is attracting attention, and as slamming is a complex hydrodynamic phenomenon of interaction between a ship body and waves, slamming pressure has the characteristics of locality, instantaneity, quick mobility and the like, and has considerable difficulty in researching the slamming phenomenon, and research means comprise theoretical analysis, numerical calculation, test and the like. Model testing is still the most accurate and economical means in view of the current research level. The falling body slamming test is one of the model tests, and a corresponding falling body slamming test device is needed for the falling body slamming test.

When the model slamming into water test is carried out, an automatic test device needs to be designed to solve the problems of automatic release and water inlet angle adjustment of the model, so that the accuracy of the test can be improved, and the reliability of test data is guaranteed. The slamming water test device commonly used at present has the following problems: mainly take vertical static release as the main part, can't realize the coupling of model speed in vertical and horizontal two directions, and static release's device is nimble inadequately moreover, is difficult to adapt to complicated various experimental structure of slamming into water, leads to unable standardization and automation. In addition, the angle adjusting device is complex, and the requirement of adjusting the transverse inclination angle and the longitudinal inclination angle simultaneously is difficult to meet, and water cannot enter at a given target speed and a given target angle. Accordingly, the existing devices are still in need of improvement and development.

Disclosure of Invention

The invention aims to solve the technical problem of providing the oblique automatic magnetic control slamming water inlet test device which has a reasonable structure and can meet the water inlet requirements of slamming tests with different water inlet speeds and angles.

The technical scheme adopted for solving the technical problems is as follows: the oblique automatic magnetic control slamming water test device comprises two L-shaped slotted guide rails, wherein inclined rails capable of sliding along the slotted guide rails are arranged on the slotted guide rails, heavy casters capable of braking and sliding along the slotted guide rails are arranged at two ends of each inclined rail, a slidable rigid frame is arranged on each inclined rail, a clamping and releasing device is arranged at the lower end of each rigid frame, an angle adjusting device is arranged at the lower part of each clamping and releasing device, lifting of each rigid frame is controlled by a winch device, and the rigid frame provides power for sliding along each inclined rail through a power device;

the rigid frame comprises a flat plate, a first lug plate, a second lug plate, a third lug plate and a fourth lug plate are respectively and fixedly arranged at four corners of the bottom of the flat plate, a rolling bearing is arranged in the first lug plate, a spline shaft is supported, a gasket is arranged between the head of the spline shaft and the lug plate, the shaft end is connected with a coupler, a spline is arranged in the first roller, and the spline shaft is matched with the first roller through key connection; the second ear plate, the third ear plate and the fourth ear plate are provided with light holes, a supporting wheel shaft is arranged between the wheel shaft head and the ear plates, the shaft ends are provided with nuts for matching, and rolling bearings are arranged in the second roller, the third roller and the fourth roller and are respectively connected with the wheel shaft to play a supporting role;

the power device comprises a waterproof shell fixedly arranged at the bottom of the flat plate, a servo motor is fixedly arranged in the waterproof shell, the servo motor is connected with a key slot opening wheel shaft through a coupling, the servo motor realizes transmission through key connection between the key slot opening wheel shaft arranged in the first lug plate and the first roller, and the servo motor is controlled in running state by encoding a servo driver;

the clamping and releasing device comprises a sucking disc type electromagnet and a control remote control switch, wherein the sucking disc type electromagnet is fixedly arranged at the bottom of the flat plate, and the control remote control switch is used for controlling the on-off of the sucking disc type electromagnet to realize clamping or releasing and adjusting the releasing degree device;

the angle adjusting device comprises a clamp bracket which is respectively and fixedly connected with one end of a double-end stud in a detachable mode, the other end of the double-end stud is fixedly connected with a model beam in a detachable mode, a model is fixedly arranged at the lower end of the model beam, and the upper surface of the clamp bracket is matched with a sucker type electromagnet;

the hoisting device comprises a hoisting machine, a servo driver and a PC (personal computer), wherein the hoisting machine is connected with the flat plate through a traction rope, the hoisting machine controls the winding and unwinding of the traction rope through the servo driver, and the PC encodes the servo driver to control the rotating speed and the steering of the servo motor.

According to the scheme, the groove is formed in the grooved guide rail, the heavy trundle is arranged in the groove, and the end part of the inclined rail is connected with the heavy trundle through the trundle cantilever which is fixedly arranged.

According to the scheme, the sucker type electromagnet is connected to the bottom of the flat plate through bolts.

According to the scheme, the studs comprise four studs, namely a first stud, a second stud, a third stud and a fourth stud.

According to the scheme, two model cross beams are arranged, and each model cross beam is fixedly connected with two studs.

According to the scheme, the lifting hook lug plate is arranged on the side face of the flat plate, the lifting hook is arranged at the end part of the traction rope, and the lifting hook lug plate and the lifting hook are matched with each other to realize traction.

According to the scheme, the cross beam is arranged between the two grooved guide rails, the fixed pulley is fixedly arranged on the cross beam, and the traction rope bypasses the fixed pulley.

The oblique automatic magnetic control slamming water test device has the following beneficial effects:

the invention has reasonable structure, the model is fixed on the rigid frame through the clamping and releasing device, the roller on the rigid frame can lead the rigid frame to move along the inclined rail in an inclined way, the inclined rail leads the model to have transverse speed, and the coupling of speeds in different directions is realized when water is introduced; the clamping and releasing of the clamping and releasing device are controlled by the on-off of the sucker type electromagnet, and the release can be realized at a designated position; the angle adjusting device enables the model to enter water at different inclination angles, has high flexibility and compatibility, is integrally controlled by electric power, is convenient to operate, and effectively reduces labor intensity of personnel and improves test safety.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of a diagonal automated magnetic control slamming water test apparatus of the present invention;

FIG. 2 is a schematic side view of the oblique automated magnetic control slamming water test device of the present invention;

FIG. 3 is a schematic view of the rigid frame structure of the present invention;

FIG. 4 is a schematic diagram of the power plant configuration of the present invention;

fig. 5 is a schematic view of an angle adjusting device according to the present invention.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in figures 1-5, the oblique automatic magnetic control slamming water test device comprises two L-shaped slotted guide rails 1, wherein oblique rails 2 capable of sliding along the slotted guide rails 1 are arranged on the slotted guide rails 1, heavy casters 3 capable of being braked and sliding along the slotted guide rails 1 are arranged at two ends of each oblique rail 2, grooves are formed in the slotted guide rails 1, the heavy casters 3 are arranged in the grooves, and the end parts of the oblique rails 2 are fixedly connected with the heavy casters 3 through caster cantilevers 4 fixedly arranged. The inclined rail 2 is provided with a slidable rigid frame 6, the rigid frame 6 comprises a flat plate 7, four corners of the bottom of the flat plate 7 are respectively fixedly provided with a first lug plate 17, a second lug plate 18, a third lug plate 19 and a fourth lug plate 20, the inner sides of the first lug plate 17, the second lug plate 18, the third lug plate 19 and the fourth lug plate 20 are respectively provided with a first roller 8, a second roller 9, a third roller 10 and a fourth roller 11 through rolling bearings 12 and wheel shafts 26, and the outer sides of the first rollers 8 are connected with a power device through key slot opening bearings 13; the rigid frame 6 provides power for sliding along the inclined rail 2 through a power device; the power device comprises a waterproof shell 24 fixedly arranged at the bottom of the flat plate 7, a servo motor 23 is fixedly arranged in the waterproof shell 24, the servo motor 23 is connected with a key groove bearing 13 through a coupler 25, and the servo motor 23 is controlled to be powered on and powered off through a key 14 arranged on a wheel shaft 26 in the first lug plate 17; the lower extreme of rigid frame 6 is provided with the centre gripping release, and the centre gripping release includes sucking disc formula electro-magnet 22 and control remote switch, and sucking disc formula electro-magnet 22 is fixed to be set up in dull and stereotyped 7 bottom, and sucking disc formula electro-magnet 22 bolted connection is in dull and stereotyped 7 bottom. The control remote control switch is used for controlling the on-off of the sucker type electromagnet 22 to realize clamping or releasing the release degree adjusting device 28.

The clamping release device lower part is provided with angle adjustment device 28, and angle adjustment device 28 includes anchor clamps support 29, and anchor clamps support 29 is detachable fixed connection with one end of double-end stud respectively, and the double-end stud includes four, is first double-end stud 30, second double-end stud 31, third double-end stud 32 and fourth double-end stud 33 respectively, and the other end of double-end stud is detachable fixed connection with model crossbeam 35, and model crossbeam 35 is provided with two, and every model crossbeam 35 is with two double-end stud fixed connection. The lower end of the model beam 35 is fixedly provided with a model 34, and the upper surface of the clamp bracket 29 is matched with the sucker type electromagnet 22.

The rigid frame 6 is controlled to lift through a winch device, the winch device comprises a winch 36, a servo driver 38 and a PC 39, a cross beam is arranged between the two slotted guide rails 1, a fixed pulley 5 is fixedly arranged on the cross beam, a lifting hook lug plate 21 is arranged on the side face of the flat plate 7, a traction rope of the winch 36 bypasses the fixed pulley 5, a lifting hook 37 is arranged at the end part of the traction rope, and the lifting hook lug plate 21 and the lifting hook 37 are mutually matched to realize traction. The winding machine 36 is connected with the flat plate 7 through a traction rope, the winding machine 36 controls the winding and unwinding of the traction rope through a servo driver 38, and the PC 39 controls the switching of the servo driver 38 and the servo motor 23.

In the preferred embodiment of the invention, the device comprises an L-shaped grooved guide rail 1 and a diagonal rail 2 on two sides, wherein the grooved guide rail 1 is provided with grooves, two ends of the diagonal rail 2 are fixedly connected with heavy casters 3 through bolts, the diagonal rail 2 is used as a travel path of rollers on a rigid frame 6, the heavy casters 3 are arranged in the grooves of the grooved guide rail 1, which is an existing tool, and can be braked, the heavy casters 3 have great bearing capacity in a braking state, can play a supporting role in braking, and can cancel the braking state of the heavy casters 3 when the inclination angles and positions of the diagonal rail 2 and the rigid frame 6 need to be adjusted, so that the heavy casters 3 roll along the grooved guide rail 1, and when the tool is installed, the two groups of heavy casters 3 need to keep the braking state, and after the assembly is completed, the diagonal rail 2 is arranged in the grooved guide rail 1.

In the preferred embodiment of the invention, the rigid frame 6 comprises a flat plate 7, a first roller 8, a second roller 9, a third roller 10, a fourth roller 11, rolling bearings 12, a first ear plate 17, a second ear plate 18, a third ear plate 19, a fourth ear plate 20, a hook ear plate 21, a waterproof housing 24, an axle 26 and a gasket 27. Four otic placodes are in the four corners of dull and stereotyped 7 bottom and dull and stereotyped 7 bolt fixed connection, first gyro wheel 8, second gyro wheel 9, third gyro wheel 10 and the inside cooperation antifriction bearing 12 of fourth gyro wheel 11, shaft 26 set up in four otic placodes, open keyway bearing 13 and the inside antifriction bearing 12 fixed connection of first otic placode 17, open keyway bearing 13 connection power device, second gyro wheel 9, third gyro wheel 10, fourth gyro wheel 11 are fixed with second otic placode 18, third otic placode 19, fourth otic placode 20 respectively through the cooperation connection of shaft 26 and antifriction bearing 12. The flat plate 7 is provided with a through hole for connecting and fixing the clamping and releasing device, the lifting hook lug plate 21 is matched with the lifting hook of the winch 36, and the rigid frame 6 is braked and recovered by the winch 36. Before the test, a section of hauling rope of the winch 36 is reserved, the length of the hauling rope is equal to the travel of the rigid frame 6, the device is assembled and fixed, the clamping and releasing device is clamped and stopped by the band-type brake of the power device at the initial position, the power device is started, the rigid frame 6 is driven by the first roller 8 connected with the power device to move along the inclined rail 2, the model 34 is released to enable the model 34 to enter water before the travel is finished, the model 34 has the speeds in the vertical direction and the transverse direction, the rigid frame 6 is gradually stopped under the braking of the tensioned hauling rope of the winch 36, the power device is closed at the same time, and the winch 36 is started to recover the rigid frame 6.

In the preferred embodiment of the invention, the power device comprises a rolling bearing 12, a splined bearing 13, a key 14, a servo motor 23 and a coupling 25, wherein the splined bearing 13 and the first roller 8 are in a key 14 connection transmission mode; a waterproof housing 24 is fixed at the bottom of the flat plate 7, and the waterproof housing 24 is used for preventing water from splashing onto the servo motor 23 during test; the servo motor 23 is fixedly connected inside the waterproof shell 24 through a bolt, a motor shaft of the servo motor 23 is connected with the key slot opening bearing 13 of the first roller 8 through a coupler 25, and the coupler 25, the key slot opening bearing 13 and the first roller 8 are driven to rotate through rotation of the servo motor 23; the servo driver 38 is arranged on one side of the test device and is connected with the PC 39 for human-computer interaction control, the target speed is set through the servo driver 38 before the test starts, the brake braking state of the servo motor 23 is set, the rigid frame 6 is enabled to be static on the inclined rail 2, the brake is canceled when the test starts, the servo motor 23 is started, the servo motor 23 quickly reaches the set rotating speed, and the rigid frame 6 moves along the inclined rail 2 at a constant speed.

In the preferred embodiment of the invention, the clamping and releasing device comprises a flat plate 7 and a sucker type electromagnet 22, wherein the sucker type electromagnet 22 is fixedly connected to a through hole of the flat plate 7 by a bolt, and the sucker type electromagnet 22 realizes the function of the clamping or releasing degree adjusting device 28 by controlling a remote control switch to realize the on-off of the sucker type electromagnet 22. In the test, the suction cup type electromagnet 22 is clamped by the mold 34 by controlling the energization of the electric remote control switch, and when the rigid frame 6 moves to the specified position, the suction cup type electromagnet 22 releases the angle adjusting device 28 and the mold 34 by controlling the energization of the electric remote control switch.

In a preferred embodiment of the present invention, the angle adjustment device 28 includes a clamp bracket 29, a first stud 30, a second stud 31, a third stud 32, and a fourth stud 33. The upper parts of the first stud 30 to the fourth stud 33 are fixed with the clamp bracket 29 through threaded connection, the bottom is fixed with a model beam 35 of the model 34 through threaded connection, the upper surface of the clamp bracket 29 is matched with the sucker type electromagnet 22, and the water inlet angle of the model 34 is changed by adjusting the matching height of the first stud 30 to the fourth stud 33 and the clamp bracket 29. The first stud 30 and the fourth stud 33 can be synchronously adjusted to change the longitudinal angle of the model 34, the first stud 30 and the second stud 31 can be synchronously adjusted to change the transverse angle of the model 34, and the first stud 30 or the third stud 32 can be adjusted to change the coupling of the longitudinal angle and the transverse angle of the model 34.

In the preferred embodiment of the invention, the hoisting device comprises a hoisting machine 36, a hoisting machine lifting hook 37, a servo driver 38 and a PC 39, the target rotating speed of the servo motor 23 is set through the servo driver 38, the hoisting machine lifting hook 37 is matched with the lifting hook lug plate 21 on the flat plate 7, the stroke of the rigid frame 6 is reserved through the hoisting machine 36, the servo driver 38 controls the encoding of the servo motor 23, the joint braking of the rigid frame 6 is realized, and when the rigid frame 6 reaches the release position, the return motion of the rigid frame 6 is realized through the hoisting machine 36.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims

1. The oblique automatic magnetic control slamming water test device is characterized by comprising two L-shaped slotted guide rails, wherein inclined rails capable of sliding along the slotted guide rails are arranged on the slotted guide rails, heavy casters capable of braking and sliding along the slotted guide rails are arranged at two ends of each inclined rail, a slidable rigid frame is arranged on each inclined rail, a clamping and releasing device is arranged at the lower end of each rigid frame, an angle adjusting device is arranged at the lower part of each clamping and releasing device, lifting of each rigid frame is controlled by a winch device, and the rigid frames provide power for sliding along the inclined rails through a power device;

the hoisting device comprises a hoisting machine, a servo driver and a PC (personal computer), wherein the hoisting machine is connected with the flat plate through a traction rope, the hoisting machine controls the winding and unwinding of the traction rope through the servo driver, and the PC encodes the servo driver and controls the rotating speed and the steering of the servo motor;

the heavy trundle is arranged in the groove, the end part of the inclined rail is connected with the heavy trundle through a trundle cantilever which is fixedly arranged, and the sucker type electromagnet is connected to the bottom of the flat plate through a bolt; the studs comprise four studs, namely a first stud, a second stud, a third stud and a fourth stud;

the two model cross beams are fixedly connected with the two studs, the side surface of the flat plate is provided with a lifting hook lug plate, the end part of the traction rope is provided with a lifting hook, and the lifting hook lug plate and the lifting hook are mutually matched to realize traction; a beam is arranged between the two grooved guide rails, a fixed pulley is fixedly arranged on the beam, and the traction rope bypasses the fixed pulley.