Tow truck for towing tank

 

(57) Abstract:

The invention relates to measuring hydrodynamics of ship and floating engineering structures and for the design of equipment for carrying out hydrodynamic and ice tests of the models in the model tank. The invention consists in that the tow truck for the ice model basin containing a frame with swivel wheels mounted on the rails laid along the water tank, electric motor, and a torque setting with the possibility of fixing it tested model, measuring the speed of the truck and the detection apparatus is provided with an additional drive with the motor, gearbox as gearbox with differential, drive shafts with couplings, angular gears, lead screws with boots and bearings, and driving the screws are installed on the sides of the bogie frame parallel rails rotatably inside the shoes, housing which is mounted on rails with permutations, while the screw shafts at one end mounted on bearings fixed to the frame of the truck, and opposite ends through a clutch installed in the housing of the angular reduktoritega with differential, and the body reducers and motor mounted on the frame, and the meter is made in the form of a gauge with two spaced apart along its length electromagnetic sensors, which are fastened to the frame parallel to the driving screw, and meter time in the form of a reference frequency generator and frequency counter. 3 Il.

The invention relates to experimental hydrodynamics of ships and floating structures and relates to equipment for carrying out hydrodynamic and ice research models in the model tank.

Known tow truck for towing tank containing a frame with swivel wheels in contact with the rails laid along the water tank, electric motor, and a torque setting with the possibility of fixing it tested models, the speed sensor carts and recording equipment (prototype).

A disadvantage of known construction tow truck is a limited possibility of its use in the range of small velocities and lack of developing this traction. This is because at low speeds the truck is not provided the necessary power Prei speeds less than 20-50 mm/s (0.02 to 0.05 m/s), and develop at low speeds, the traction is very small. The result is that the cart moves evenly, smoothly, and with considerable resistance on the part of the tested models (e.g., ice) at all stops.

The objective of the invention is to increase the efficiency of the use of tow trucks, expanding its experimental capabilities at low speeds, ensuring uniformity of movement and considerable tractive effort up to speeds of 1 mm/s (0.01 m/s) and below, without which it is impossible to test models of drilling platforms and other marine engineering structures in ice.

For this tow truck is provided with an additional drive with the motor, gearbox as gearbox with differential, drive shafts with couplings, angular gears, lead screws with boots and bearings, and driving the screws are installed on the sides of the bogie frame parallel rails rotatably inside the shoes, the body of which is mounted on rails with permutations, while the screw shafts at one end mounted on bearings fixed to the frame of the truck, and protivopoloznymi with an electric motor through reducer in the form of a gearbox with differential, and the body reducers and motor mounted on the frame, and the velocity meter is made in the form of a gauge with two spaced apart along its length electromagnetic sensors, which are fastened to the frame parallel to the driving screw, and meter time in the form of a reference frequency generator and frequency counter.

In Fig. 1 shows a tow truck, side view; Fig. 2 - the same, top view; Fig. 3 - scheme of the velocity meter tow truck.

Tow truck (Fig. 1) includes a frame 1 with the traction wheels 2 mounted on the rails 3, is laid along the bowl of the water tank filled with water 4 ice cover 5, the main drive 6, a torque setting 7 to which is attached the test model 8, and the auxiliary drive comprising (Fig. 2) of the motor 9, the gear in the gearbox and differential gear 10, the drive shaft 11, a clutch 12, the angular gear 13, the two chassis screws 14, the shoes 15 and the supports 16, as well as measuring the speed of the truck, which is made in the form of a gauge 17 with two electromagnetic sensors 18 and the magnet 19, which is attached to the Shoe 15, and measuring time (Fig. 3) in the form of a reference frequency generator 20 and the frequency of the I trolley is moved from the main actuator 6. While the shoes 15 is disconnected from the rails 3; additional actuator 9 is not receiving power. In this speed range are testing ship models. Develop towing carriage (BT) force in the specified speed range is sufficient to overcome the resistance to movement of the ship from the water 4 and ice cover 5 that fills the Cup of the ice water tank.

To study the physical processes of breaking the ice and measuring forces arising on the elements of the models of drilling platforms and other marine engineering structures, from the ice when it shifts necessary to simulate very small speed of 0.05-0.001 m/s and below. In this speed range off the main motor 6, with additional motor 9 by the rotation driving of screws 14 move loosed rails shoes 15 in the extreme forward position; disconnect the motor 9; rigidly secured to the casing Shoe 15 on the rails. The auxiliary drive is ready to use. Include the motor 9, install the necessary transmission gear 10. Tow truck moves to the running rails 2 to rails 3 using thrust developed screw is considerable traction even at very low speeds, and the presence of a differential in the gearbox 10 provides equal traction on both sides of the tow truck. When passing through the first sensor 18 by magnet 19 generates a pulse that triggers the counter 21, and begins counting pulses from the oscillator 20 with the reference frequency F0(see Fig. 3). After passing the BT plot the length of S, at the moment of passage of the magnet 19 by the second sensor 18 generates a second pulse stopping by counter 21. The number of pulses counted by the counter, is inversely proportional to the speed of the BT: N = F0TMEAs.= (F0S)/V. the Length of the run BT on the secondary drive is 3 meters (slightly less than the length of the lead screw). After passing the truck specified stretch of road actuates limit switch and stops the movement of the BT. After that, disconnect the Shoe 15 of the rail, the rotation driving of screws 14 from the electric motor 9, again move the shoes in the front end position (BT fixed, as there is no rigid connection of the Shoe with rails, the motor 9 rotates idle). Disconnect the motor 9, fix shoes 15 on the rails; the auxiliary drive is ready for further use. At low soon the 000 C. It is quite sufficient to establish physical laws and dimensions of the efforts that occur on models of engineering structures. At the same time increases the efficiency of the ice field, as is the possibility of testing models in one of the ice field in a wide speed range of BT.

Tow truck for the ice model basin containing a frame with swivel wheels mounted on the rails laid along the water tank, electric motor, and a torque setting with the possibility of fixing it tested model, measuring the speed of the truck and the detection apparatus characterized in that it is provided with an additional drive with the motor, gearbox as gearbox with differential, drive shafts with couplings, angular gears, lead screws with boots and bearings, and driving the screws are installed on the sides of the bogie frame parallel rails rotatably inside the shoes, housing which is mounted on rails with permutations, while the screw shafts at one end mounted on bearings fixed to the frame of the truck, and the opposite ends of the through coupling with weariness through the reduction gear in the form of a gearbox with differential, and the body reducers and motor mounted on the frame, and the velocity meter is made in the form of a gauge with two spaced apart along its length electromagnetic sensors, which are fastened to the frame parallel to the driving screw, and meter time in the form of a reference frequency generator and frequency counter.

 

Same patents:

The invention relates to experimental hydrodynamics of ship and for the design of the towing dynamometers for testing models of ships and self-propelled their testing in a rigid harness

The invention relates to equipment for studying processes of water erosion of soils in the laboratory

The water tank // 2058542
The invention relates to the technology of shipbuilding and for the design of devices for hydrodynamic testing models of vessels (ships, boats, boats, ferries, floating bridges, and others)

The invention relates to experimental hydrodynamics and applied to the study of the processes of immersion of solids in the liquid through its free surface

The invention relates to agriculture, in particular to the study of erosion processes occurring on the surface of the soil from runoff, snowmelt, rain and irrigation water

The invention relates to the experimental equipment used to study the hydrodynamics of the flow in the working wheels of hydraulic machines by visualizing them in the thread

The invention relates to the experimental equipment used for visual examination of the mixture flow in the working wheels of hydraulic machines

The invention relates to experimental hydrodynamics of ship and for the design of the towing dynamometers for testing models of ships and self-propelled their testing in a rigid harness

The water tank // 2058542
The invention relates to the technology of shipbuilding and for the design of devices for hydrodynamic testing models of vessels (ships, boats, boats, ferries, floating bridges, and others)

The invention relates to the field of experimental fluid mechanics and applies modeling techniques in laboratory conditions force impact of internal waves on underwater technical objects

Propeller // 2043262
The invention relates to shipbuilding, namely the ship's propeller screws

The invention relates to experimental hydrodynamics and applied to the study of the processes of immersion of solids in the liquid through its free surface

The invention relates to water transport, in particular to the stand installations to simulate the flow of water towed body

FIELD: experimental hydromechanics; designing of equipment for conducting hydrodynamic and ice searches of marine engineering facility models in model testing basins.

SUBSTANCE: proposed device includes towing trolley with frame rigidly secured on it; this frame is provided with bar which is connected with model through dynamometers and bearing plate. Dynamometers form three-support force-measuring system; they are provided in each support in form of two interconnected elastic members; one elastic member is made in form of five-rod member provided with longitudinal and lateral force sensors; it is located between two flanges. Second elastic member of dynamometer is made in form of membrane-type elastic member whose membrane is located between rigid rim and rigid central part of this member provided with threaded rod with elastic hinge mounted over vertical axis perpendicularly relative to membrane. Membrane, rim and rigid central part with threaded rod and elastic hinge are made integral. Rim of membrane elastic members is rigidly connected with one of flanges of five-rod elastic member in such way that threaded rod is located along vertical axis of support and is rigidly connected via elastic hinge with bearing plate secured on model. Membrane is provided with resistance strain gages forming vertical force measuring bridge. Second flange of each five-rod member is connected with additional bearing plate secured on bar.

EFFECT: enhanced accuracy of measuring forces and moments.

3 dwg

FIELD: transport, auxiliary ship equipment.

SUBSTANCE: proposed test pool comprises the bottom simulation plant including submerged suspended support made up of assemblage of identical support sections arranged across the channel and distributed over its length. Aforesaid sections are suspended with adjusting tie-rods jointed to their length adjustment devices arranged on the channel walls sides. False bottom is mounted and rigidly attached to the said suspended support. The bottom simulation plant can vary the false bottom inclination towards horizontal plane in both the channel lengthwise direction α° till , and crosswise direction β° till , where L is the length of assembled bottom simulator, B is the bottom simulator width, HB is channel water depth, HD is the deepest bottom point, α° and β° are the angles of inclination of false bottom in lengthwise and crosswise directions, respectively. The total area of sections across the channel of support sections of the bottom simulator makes, at least, 0.05 of false bottom area in plan, while the false bottom width does not exceed 0.75 of the channel width. The false bottom is arranged in the channel symmetrically relative to the channel lengthwise axis.

EFFECT: higher efficiency of using ice test pool.

3 cl, 2 dwg

Up!