RU2473733C1 - Cable assembly for working movements of suction dredge in construction and cleaning of canal from sediments - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: cable assembly includes a frame-lifting and swing winches with programmable winding of ropes onto drums rotated with angular speed, which is directly proportional to lengths of wound cables, blocks on the frame-lifting boom of the suction dredge and life ropes with roller carriages arranged on canal shores in parallel to its longitudinal axis. The device is also equipped with a follower cable, branches of which via blocks on the frame of the snapper and the frame-lifting boom of the suction dredge are connected to the frame-lifting winch arranged in the form of two drums arranged on one shaft synchronised with a reversible programmable drive, and are fixed to life cables perpendicularly to the longitudinal axis of the canal with the help of roller carriages. Roller carriages are equipped with fixators, with which roller carriages of swing winches are also equipped.

EFFECT: by control of snapper position in a canal section in connection with suction dredge displacement along the canal axis, the specified curvilinear underwater cross section of the canal is formed, which corresponds to the stable bed of the canal, and production of works is simplified.

5 dwg

Description

The present invention relates to a device for excavation with suction dredges and can find application in the construction and cleaning of canals of sediment with the formation of a given stable curved transverse underwater channel profile.

A cable device is known for carrying out a method for constructing and cleaning channels from sediment with a dredger, including hoisting and papillage winches for rail rope fastening (Melamut D.L. Hydromechanization in land reclamation and water management. Stroyizdat, 1981, p. 28, 29, 40; Kharin A .I. Hydromechanization in land reclamation construction. M., Kolos, 1982, pp. 102-108).

A disadvantage of the known device is the impossibility of using it to form a given stable curved transverse underwater profile of the channel of the channel, it is possible to develop only the main recess of the channel.

Closest to the proposed one is a cable device for working movements of the dredger when implementing the method of building and cleaning the channel from sediment (ed. St. USSR No. 1161630, IPC E02B 5/02, E02D 17 / 16.1985), including hoisting and papillon winches and made with the possibility of software winding the cables on the drums of papillonage and hoisting winches, rotated with an angular speed directly proportional to the lengths of the wound cables. In this case, the movement of the soil sampling device in the horizontal plane is carried out by pile-rail papillonation.

The disadvantage of this method is the impossibility of forming a given stable curved transverse underwater profile of the channel of the channel. With its help, it is possible to form an underwater slope of the channel with a predetermined laying of a rectilinear type, which is less stable compared to curvilinear (parabolic).

To eliminate this drawback allows the proposed cable device for working movements of the dredger during the construction and cleaning of the channel from sediment, including hoisting and papillage winches with software winding of cables on drums rotated with an angular speed directly proportional to the length of the wound cables, blocks on the hoisting boom of the dredger and placed on the banks of the channel parallel to its longitudinal axis, rail cables with roller carriages, which according to the invention is equipped with a cable-to apyre, whose branches are connected through blocks on the frame of the soil intake and the dredger’s lifting boom to a lifting hoist made in the form of two synchronized drums placed on the same shaft with a reversible program drive and secured to the rail cables perpendicular to the longitudinal axis of the channel using roller carriages equipped with clamps, which are equipped with roller carriages and papillon winches.

The essence of the proposed technical solution lies in the fact that the use of a frame-lifting double-drum synchronized winch with a programmable reverse drive allows simultaneous winding and unwinding of the branches of the copier cable, while controlling the speed of rotation of the winch drums and, accordingly, the location and movement of the soil sampling device in a vertical plane of the cross section channel, which is necessary for the formation of a given curved underwater cross section of the channel. The use of the papillon railing method with fixing the position of the carriage of papillon cables and the copier cable allows you to move the dredger perpendicular (β = 90 °) to the longitudinal axis of the channel while maintaining a constant angular rotation speed of the papillon winches, which simplifies the work on soil development.

During the time t _x necessary for the formation of the underwater transverse profile of the channel of the channel on the drums of papillage winches, a cable of length “X” is wound and unwound, and a soil pick-up device mounted on a copier cable will also move in a horizontal plane by a distance of “X”. During the same time t _x , a copier cable of length U _{x is} unwound and unwound on the drums of a synchronized reversible hoisting winch, and the soil pickup device must go along the path U _x in a vertical plane to create a design underwater transverse channel channel profile

Wherein

where V _1x is the linear speed of winding the cable of papillonage winches; V _2x is the linear speed of reeling-unwinding of the copier cable to the drums of a synchronized reversing winch.

The winding speeds of the papillon cables and the copier cable, expressed through the angular rotation speed of the winch drums, will be:

where ω _1x is the angular velocity of rotation of the papillon winches; ω _2X - the angular speed of rotation of the drums of the synchronized reversible frame hoist winch of the copier cable; R ₁ and R ₂ are the radii of the drums of the papillon and synchronized reversing winches.

Taking R ₁ = R ₂ , the formula (1) can be converted:

From formula (4) it can be seen that the angular rotation speed ω _2X of the drums of the synchronized hoisting winch differs from the angular rotation speed of papillon winches and is directly proportional to the lengths of the wound - unwound sections of the copier cable.

But for the formation of a given curved (parabolic) stable underwater channel profile, the angular rotation speed of the drums of the synchronized hoisting winch should be a variable:

where N _to - the depth of the water in the channel on the axis of the channel;

h _vak is the minimum water depth at which the vacuum of the soil pump does not break off;

N _kx - the depth of the water in the channel at a distance of "X" from the vertical axis of the channel.

From formula (6) it can be seen that at a constant angular rotation speed of papillage winches ω _{1x, the} angular velocity ω _{2x of the} rotation of the drums of a synchronized hoisting winch is variable (unlike the prototype) and depends on the location of the soil intake device in the cross section of the channel.

Thus, with a projected channel cross-section and angular rotation speed of papillage winches, construction and cleaning of the channel of sediment by a dredger with the formation of a given stable curved underwater transverse profile of the channel are possible by programmatically winding the cables on the drums of the papillon winches and sequential winding - unwinding the copier cable onto the synchronized drums reversible winch, rotated with an angular speed directly proportional to the lengths of the winded and unwound cables.

The essence of the invention is illustrated by drawings, where figure 1 shows a diagram (plan) of cleaning the channel from sediment using the proposed cable device; figure 2 is a section aa of figure 1; figure 3 is a section bB of figure 1; figure 4 is a design diagram; figure 5 - arrangement of the cable device for the working movements of the dredger and soil sampling device.

The proposed cable device includes a cable copier 9, the branches of which through blocks 12 on the frame 13 of the soil intake device 14, the blocks 15 of the lifting boom 16 of the dredger 3 are connected to the lifting hoist 17, made in the form of two synchronized drums with a reversible program drive located on one shaft , and fixed to the rail cables 5 perpendicular to the longitudinal axis 4 of the channel 1 using roller carriages 11 provided with clamps. To the guide ropes 5 using roller carriages 6, also equipped with clamps, perpendicular to the longitudinal axis of the channel are attached bow 7 and stern 8 ropes of papillon winches 18.

The work of the proposed cable device when cleaning the channel from sediment is as follows.

The process of cleaning the channel 1 channel of the sediment 2 begins with the installation of a dredger 3 on the longitudinal axis 4 of the channel and the device on its banks of the wire rope 5. To the wire rail 5 of the cable carriages 6 with clamps perpendicular to the longitudinal axis 4 of the channel 1 are attached bow 7 and feed 8 cables papillon winches 18. The maximum length of the copier cable 9 is determined based on the maximum depth h _{to the} inset 10 of the channel 1 of the channel 1 and the location on the banks of the cable rails 5. The branches of the copier cable 9 are connected by roller carriages 11 with clamps to the rail and cables 5 and through blocks 12 on the frame 13 of the soil-intake device 14 and blocks 15 of the boom 16 with a double-drum reversed synchronized hoist winch 17 with a program drive that simultaneously winds and unwinds the branches of the copier cable 9. A double-drum reversible synchronized winch 17 is equipped to control the speed of rotation.

Directly cleaning or developing the channel of channel 1 from sediment 2 is carried out by multiple reciprocating movements of the dredger 3 perpendicular to the longitudinal axis 4 of the channel using papilage winches 18, rotated at a constant speed, while simultaneously lifting and lowering the frame 13 of the soil sampling device according to the formula (6) 14 synchronized reversing winch 17.

After working off the specified cross-section of channel 1 in this position, the dredger 3 and the cable copier 9 are moved with trosoleier papillon along the channel axis 4 to a distance equal to the width of the developed strip 19, the position of the roller carriages 6 and 11 is fixed on the rail cables 5 and the soil development process is repeated and etc.

Thus, the proposed cable device by adjusting the position of the soil sampling device in the channel section in conjunction with the movement of the dredger allows the formation of a given curved underwater cross-section of the channel corresponding to a stable channel of the channel, and simplifies the work.

Claims (1)

A cable device for the working movements of the dredger during the construction and cleaning of the channel from sediment, including hoisting and papillage winches with programmed winding of cables on drums rotating at an angular speed directly proportional to the length of the winded cables, blocks on the hoisting boom of the dredger and located on the banks of the channel parallel to its longitudinal axle rail cables with roller carriages, characterized in that the device is equipped with a copier cable, the branches of which through blocks on the frame of the soil intake and ramop the dredger’s boom arms are connected to a frame hoist winch made in the form of two synchronized drums placed on the same shaft with a reversible program drive, and secured to the wire ropes perpendicular to the channel’s longitudinal axis using roller carriages equipped with clamps, which also provide roller carriages of papillon winches.

Images