SU1535954A1 - Method of equipment of underwater planing machine - Google Patents

Abstract

The invention relates to earthmoving machines and reduces power consumption when operating an underwater planner. The working equipment of the underwater planner contains pushing bars 1 and a blade 2 mounted on them with a cutting knife. There are holes 3 on the frontal surface of the blade. The hydraulic system for supplying water to the frontal surface of the blade 2 includes a hydraulic converter (CG) 4 in the form of two hydraulic cylinders with a common rod, successively installed two-position hydraulic distributors (CG) 12 and 13. Hydraulic cylinders-sensors are installed in the push bars x 1 (HZ) 16. During the development of the soil, force action is transmitted through the pushing bars 1 to HZ 16, which causes an increase in the pressure of the working fluid in the control chamber of the GR 13. With a certain pressure, the spool of the GR 13 rises, dynes GR 12 pressure and return gidromagistral mi. This provides automatic reciprocating movement of the pistons of the GP 4. When the piston located in cavities 7 and 8 moves, the cavity 8 is filled with water through the check valve 11 from the surrounding environment. Then the water from the cavity 8 is forced out through the check valve 6 into the cavity 9 of the blade 2. Under the action of the pressure generated by the HP 4, the water is forced out through the holes 3 in a pulsed mode onto the frontal surface of the blade 2. This reduces the swing resistance. 1 il.

Description

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two hydraulic cylinders with a common rod, successively installed two-position hydraulic distributors (GR) 12 and 13. Hydraulic cylinders-sensors (HZ) are installed in the push bars x 1 16. During the development of the ground, the HZ 16 is transmitted through the push bars 1 pressure of the working fluid in the control chamber GR 13. At a certain pressure, the spool GR-13 rises, connecting GR-12 to the pressure and discharge hoses. This is provided. The invention relates to earthmoving machines, namely to hydraulic drives of machines for underwater operations such as underwater planners.

The purpose of the invention to reduce nerge

tic costs

The drawing shows the working equipment of the underwater planning with the hydraulic system.

The working equipment of the submarine planner includes pusher bars and a blade 2 mounted on them with a cutting knife and holes 3 on the frontal surface for supplying to the upper section of the oi-vad under hydrostatic pressure. The equipment is equipped with a hydraulic system: -mon holding hydraulic power 4, you i foam in the form of two hydraulic cylinder;: 1. with on shgokom, one of which amb. By means of check valves 5, 6 with their own; cd i by them 7, 8 communicated with the internal h: .. sto 9 blades, and by means of the return gaps 10, 11 with an aqueous medium, the first 12 and second 13 in series are installed through which the cavities 14, 15 of the second hydraulic cylinder of the hydraulic unit are in communication with the pressure and discharge lines, and adopted into the push bars and hydraulic cylinders-sensors 16

The first distributor 12 has the control chambers 17, 18, which are connected to the cavities 14, 15 of the second hydraulic cylinder of the transducer 1. The second hydraulic distributor 13 has the control chamber 19, which through the adjustable throttle 20 and the valve 21 is connected to the working cavity i of the hydraulic cylinders 16 In addition, the blade 2 is made of box-shaped with an internal cavity 4, with which the holes 3 are communicated on the frontal surface. Hydrodistributor 12 has a latch 22, the Hydraulic system has adjustable chokes 23 and 24.

The work equipment of the sub-scheduler is as follows.

The automatic reciprocating motion of the GP 4 pistons. When the piston located in cavities 7 and 8 moves, the cavity 8 is filled with water through

check valve 11 from the environment. Then, the water from the cavity 8 is forced out through the check valve 6 into the cavity 9 of the blade 2. Under the action of the pressure generated by the GP 4, the water is forced out through the holes 3 in a pulsed mode

frontal surface of the blade 2. This reduces the swing resistance. 1 silt

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In the initial position, the underwater planner is immobile and the force effect on the ogval 2 oi is forced, therefore

0 pressure of the working fluid in the working cavity i of the cylinder-sensors Hi and in the control chamber communicated with them is hydrodistributed 13 times zero or the composition has the most significant value for raising the water gun Zolotnik E and the federal unit 13 under the action springs trimmed down and overlaps guide robinia

When moving forward, the planner begins working on the ground, which

I exerts a force action cha dump 2 C, i your effect through the pushing Gf .p. 1 is transmitted by the hydraulic cylinders 16, which causes an increase in the pressure of the working fluid in their working areas and in the chamber with them 19

I control and distributor 13 With increasing pressure up to a given iu-speed, the valve of Eidrodistributor 13 overcomes the force of the spring and is controlled by the hydraulic distributor 12c of the pressure and drain hydrographs, which provides an automatic reciprocating pattern. E and the distributor 12 is retained by the retainer 22, then the working fluid from the pressure hydraulic line goes through the hydraulic distributors 12, 13 and the throttle into the porpper cavity 14 hydr cylinder hydraulic transducer 4, the pistons of which are lowered At the same time, the working fluid entering i into the control chamber 17, however, when the pistons are in place, its pressure is not enough to switch the spool only when the pistons of the hydraulic transducer 4 reach the stop and the pressure in the piston cavity and in the associated chamber, the control 17 is increased to a static value sufficient to overcome the clamping force. The value of the specified set pressure is greater than uiaei, the pressure corresponding to

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to the working movement of the pistons of the hydraulic converter 4. After switching the spool of the hydraulic distributor 12 up, it connects the rod cavity 15 to the pressure main and the piston cavity 14 with the drain, ensuring the pistons rise to their stop. When the piston stops, the pressure of the working fluid in the rod cavity 15 and in the control chamber 18 rises to the set value and the valve, overcoming the force of the retainer 22, switches to the initial position, i.e., lowers. Thus, the automatic switching of the direction of movement of the pistons of the transducer 4 is performed.

When the piston placed in the water cavities 7, 8 moves up the cavity 8 is filled with water through the check valve 11 from the environment, while it moves downward the water from the cavity 8 is forced out through the check valve 6 into the cavity 4 unwinds 2. Paul DEY1 by the pressure generated by the hydrofractor 4. The water from the cavity 4 of the blade is displaced through the holes 3 in the pulsed mode to the front surface of the blade 2 The water entering under pressure creates a layer of liquid lubricant between the front surface of the blade and the surface of the soil chips, which reduces It gives strength to friction and general resistance to digging, and it is perfect. reduces energy efficiency for the execution of the technological process. In addition to TCI o, the excess pressure of the wave in the cavity 4 of the blade 2, the value of which exceeds the hydrostatic pressure at a given immersion depth, prevents the soil 3 from clogging the holes 3 in the dump sheet of the blade 2. The choke 20 acts as a filter preventing accidental switching

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the spool valve 13 for short-term power effects on the blade 2. The performance of the hydraulic converter 4 is controlled by adjustable throttles 13 and 24 in accordance with the operating conditions.

Claims (1)

Invention Formula Working equipment of the underwater planner, including pushing bars and a blade installed on them with a cutting knife and holes on the frontal surface for supplying the blade to the surface under hydrostatic pressure of water from the surrounding water environment, characterized in that the blade is box-shaped with the internal cavity with which the holes on the frontal surface are communicated, and the working equipment is equipped with a hydraulic system made of a hydraulic converter in the form of two hydraulic cylinders with a common rod, The din of which, via check valves, communicate with their cavities, respectively, with the internal cavity of the blade and with the aqueous medium, from successively installed first and second two-way valves, through which the cavities of the second hydraulic cylinder of the hydraulic converters are connected with the pressure and discharge lines, and sensor cylinders, wherein the first valve is made with two control hydrochambers, which are respectively associated with cavities of the second valve Po- cylinder hydrostatic machine and a second control valve adapted to control one gidrokameroy which communicates with the working cylinders-cavities of sensors.