SU468833A1 - Device for vertical raising and lowering ships - Google Patents

Description

one

The invention relates to the field of mechanization and automation of operations for raising and lowering ships.

Devices for vertical lifting and lowering of ships are known, comprising short-stroke hydraulic jacks with load sensors, lifting traverses, support rods, traversing and frame locking devices, platforms and a hydraulic system of a drive with a mechanism for setting the working fluid flow rate.

However, the known devices do not always provide the synchronous operation of hydraulic jacks, which reduces the efficiency of the use of such devices (B.

The purpose of the invention is to optimize the processes of lifting and lowering ships.

This is achieved by the fact that the device is equipped with a functional block of reverse and counting of the unsynchronization impulses, connected from the input side through an amplifier converter to a load sensor, for example, m-agnotoelastic, and from the output side to an actuator specifying the flow rate of the working fluid in the hydraulic jack system.

FIG. 1 shows schematically in plan a device for vertical lifting and lowering of ships with a block diagram for synchronizing the stroke of a hydraulic jack; in fig. 2 is a longitudinal section along A-A in FIG. one.

Each short-stroke hydraulic jack 1 is connected simultaneously with two supporting rods 3 passing through the lifting bar. The latter are engaged with

lifting traverse 2 by means of traversing locking devices 4, and also associated with frame locking devices 5 and platforms 6.

Functional block 7 reverse and accounts

pulses desynchronization is connected from the input side through the amplifier-converter 8 to the load sensor 9, for example magneto-resistant, mounted on the spherical part of the hydraulic cylinder rod 1, and from

the inlet to the actuator 10 sets the working fluid flow rate in the hydraulic drive system 11.

The proposed device works as follows.

Before lifting the vessel, the lifting cross member 2 is set in the lower position, and the traverse locking devices 4 are brought into engagement with the support rods 3. When the working fluid is fed under pressure into the cavity of the hydraulic jack 1 corresponding to the lifting of the ship, the hydraulic jack stem 1 raises the cross bar 2, and the traverse locking devices 4, resting against the teeth of the support rods 3, lift them up and with them the vessel

to a height equal to the piston stroke

short-stroke hydraulic jack 1, and at the beginning of lifting the vessel frame locking devices 5 are automatically dissolved.

When all the hydraulic jacks 1 go uphill, the load sensor 9 of each hydraulic jack 1 produces an electrical signal proportional to the applied force, which at the output of the converter-amplifier 8 becomes equal to zero, as a result of which the reverse 7 unit and counting the out-of-sync pulses do not issue a control signal to the actuator mechanism 10 sets the working fluid flow rate.

Thus, with the synchronous operation of the hydraulic jacks, the parameters of the hydraulic system of the drive do not change.

In the case of non-synchronous progress (lag) of any jack 1, practically the force developed last will be zero, and accordingly at the output of load sensor 9 the signal will also be zero, as a result of which the amplifier-converter will give a control through the remote-control reverse relay. the signal to the actuator 10 specifying the flow rate of the working fluid, as a result of the operation of which the flow of the working fluid to the corresponding cavity of the hydraulic jack increases, thus entering it into a synchronous operation s operating in parallel with other hydraulic jacks Upon reaching synchronism hydraulic jack 1, the actuator 11 is automatically set in the normal position of supplying the working fluid.

Simultaneously with the supply of the equalizing signal, the actuator 10 sets the working fluid flow rate, the desynchronization signal arrives at the pulse counting relay of block 7, which stores the serial number of the desynchronization pulse.

When you repeat the output of the same ram 1 of synchronism, the next year will again be entered into synchronism, and the pulse counting relay of block 7 will memorize the next synchronization pulse.

The block 7 of the reverse and the desynchronization pulse counter is tuned to memorize two desynchropization pulses, and when the third pulse arrives, the reverse relay is activated, which activates the actuator 10 to increase the supply of working fluid to the corresponding cavity of the hydraulic head 1 for the entire lifting period of the vessel, thus providing way the stability of the synchronous course of the hydraulic jack 1.

If, within a specified time, block 7 of the reverse and counting of the unsynchronization pulses, which have registered the registered dissynchronization pulses in a memory for a certain Burden, does not receive the next desynchronization pulse, then previous pulses or

pulses registered in the memory of the pulse counting relay of block 7.

Further counting of the pulses begins first, from the first point of the pulse to its pulse output.

The ship is also launched cyclically, with one cycle equal to the stroke of the piston of the hydraulic jack 1.

During the descent of the ship and the synchronous course of all

jacks 1, the signal at the output of block 7 of reverse puls of the mischip stabilization will be zero, as a result of which the actuator 10 setting the working fluid flow rate set to the nominal flow position will not be subjected to a control action from the side of block 7.

In the case of a non-synchronous stroke of the hydraulic jack 1, the control signal from the output of the amplifier converter 8 through the remote-controlled reversing relay of the unit 7 is fed to the actuator 10, as a result of which the supply of the working fluid to the corresponding cavity of the hydraulic jack 1 decreases, thus entering

synchronous action with other parallel working hydramirates 1.

When a synchronous stroke is reached by the hydraulic jack 1, the actuator 10 is set to the position of the normal supply of working fluid.

During the descent of the vessel, the block 7 of the reverse and counting of the desynchronization pulses work the same as when the vessel is raised, but when the third in-count i-pulse of desynchronization arrives

the actuator 11 is turned on to reduce the supply of working fluid to the corresponding cavity of the hydraulic jack 1 for the entire period of the ship’s descent, thus ensuring the stability of the synchronous stroke of the hydraulic jack 1.

Since the lifting and onusk of the vessel occur cyclically, between idling the idling of the traverse 2 takes place, during which it is assumed

automatic shutdown of block 7 of the reverse and counting of dissynchronization pulses.

Subject invention

Device for vertical lifting and lowering of vessels, containing short-stroke hydrodookrat.kraty with load sensors, lifting traverse, support rods, traverse and paiMHbie locking devices, platforms and

The hydraulic system of the drive with a mechanism for setting the working fluid flow rate, characterized in that, in order to optimize the lifting and lowering processes, it is equipped with a functional unit for reversing and counting out-of-sync pulses that are connected from the input side through the amplifier-converter to a load sensor, for example, magneto-resistant, and from the exit side, to the executive mechanism for setting the flow rate of the liquid slave in the hydraulic drive system.

..one.

-one

t

3

Q - 7 - 10

  J

;.

4,68833.