Method of construction beam production out of modified wood
SUBSTANCE: method of construction beam production out of modified wood involves wood modification by squeezing fine metal powder into lumber cavity, with further formation of lumber face by rolling even surface before feeding it into reverse mold, where lumber is put by metal faces together. Then ultra high frequency (UHF) current is applied to beam ends to mollify metal powder, and modified materials are connected in reverse mold by pressing, at the moment of which UHF current is switched off, and obtained seam is cooled, finished beam is extracted from reverse mold freeing it for next beam pressing.
EFFECT: obtainment of construction beams of specified shape and strength properties.
1 dwg, 1 tbl
The technical field to which the invention relates.
The present invention relates to the woodworking industry and can be used to create construction timber in the form of a beam made of composite structures.
The level of technology
The authors of the famous GOST 24588-81 "Procurement of modified wood", which are obtained by thermodynamic treatment and transverse uniaxial compaction of pre-steamed wood, followed by drying, and are mainly used for various machine parts (bearings, sliders timber frames, linings and so on), and have a density of up to 1100 kg/m3that makes them very inconvenient for use in the manufacture of furniture (get serious), as well as in building structures.
The authors also known of monogram developed by Ukrniitm (see "Study the possibility of obtaining wood pulp by crushing wood for the production of new anisotropic wood materials". The Report Ukrniinti. Topic Trandenkov No. TR 0193039383. Kiev, 1966 - 107 C.).
Monograph is a material made of expanded fiber plexus substandard wood raw material formed by the thinning of the forest.
The breadboard is the first production process monodrama includes the following operations: preparation of raw materials, his razvaltsovannye on long plexus, drying, resinification plexus, pressing and polariscope processing.
Obtained in this way monograph is a very heavy material and is only suitable for certain non-critical building structures and cannot be used in the furniture industry or the finishing work inside the premises during construction.
The authors of the various known methods of making composite materials, for example, A.S. No. 1329972, CL B27N 3/02 "Method of manufacturing a composite material based on phenol-formaldehyde binder and wood filler", in order to improve fluidity, toughness and heat resistance of the material in phenol-formaldehyde binder is injected dicyandiamide in an amount of 1-12 wt.% on the number of phenol-formaldehyde binder.
The analysis showed that such a method of manufacturing a composite material suitable for use in the furniture and construction industries, as it does not work on transverse bending, badly perceives efforts buckling under vertical load and does not perceive the alternating load.
Also known "Method of manufacturing telepresence wood products" in A.S. No. 1346426, CL B27N 3/02, in order to improve the quality of wood products by increasing the fluidity of the viability of the press mass after mixing wood particles with a binder meet the protective treatment pitched particles best choice rubber latex, this phenol-formaldehyde binder take in the amount of 20-25 wt.%, and the best choice latex in the amount of 5-15 wt.% from the number of press mass.
However, such a composite material is not suitable for the manufacture of furniture and building structures as being flexible and elastic, very bad holding shock and does not provide the required surface hardness, and reacts badly to the alternating load, occurring especially in building constructions.
The authors also known application France No. 2618719 the Manufacture of extruded products", which uses wood fiber all breeds and 10% of binder resin, glue or polymersomes substances, extrude the material at a pressure of 80-500 kg/cm2.
However, this material is also not suitable for the production of furniture and building structures. Being flexible and able to absorb shock, he was quite badly perceives thrashing efforts, does not have enough stiffness to shear forces do not deform and not lose its geometric shape, which is very important for furniture, in addition, such material is not environmentally friendly.
The authors also known patent of Russia №2179923, CL 7 B27M 3/14 "Method of manufacturing cast sleepers for Railways broad gauge", inwhich the sleeper to improve performance, reduce its weight and cost are made from wood fibers of different breeds, metal wire, rubber and viscose, and wood fibers obtained from waste wood and lumber, and metal wire, rubber and viscose - from waste tires, when this composition is prepared in the proportion of wood fiber 50-70%, metal wire 30-10%, liquid rubber 5-10%, liquid viscose 5-10% of the moldable mass, the composite mass is fed into a press with a pressure of not less than 75 MPa and stand at least 1 minute at a temperature of 75-100°C with limited access of air.
However, such material is not suitable for the manufacture of building structures, as it has the ability to process and making the required texture.
Authors known methods of bonding of timber on the teeth, tongue, lap, fugu (see Kovalchuk L.M., Bakakin E.N., Belozerova A.S. ' Mechanical bonding of wood on the timing thorn", Nitisastro, Moscow, 1963, p.48) (Glebov J. C., Stammina SCI "Splicing timber length", Was, Moscow, 1982, p.34).
However, such methods of gluing wood is only suitable for flat dry lumber, and impossible ways to glue raw lumber, especially round timber and sawn timber of different species.
AB is oram also known patent RF №2179923, CL MCI VM 3/14, "Method of manufacturing cast sleepers for Railways broad gauge", which made the sleepers of wood fibers of different breeds, metal wire, rubber and viscose by pressing with a pressure of not less than 75 MPa at a temperature of 75-100°C. But this method are fundamentally different composite material, which by its composition and technical characteristics different from solid wood and can not be used for bonding wood.
The authors of the famous patent USSR No. 1790487, CL VC 5/04, "the welding Method of wood", which in the junction of the surfaces under pressure from pump metal powder, after which the joined surface is placed in a chamber with carbon dioxide, and the connection they make with the help of pulse pressure cold.
This method of connection of the ends of the wood was very expensive, as it requires a special camera with carbon dioxide, working under high pressure, and a special device cold welding semimetallic all welded materials that severely limits the practical application of this method.
Authors known prototype - RF patent №2235637, where on the surface of the timber with the help of dispenser put a layer of fine metal powder and served the lumber with Poroskov press, the upper part of which is patterned matrix, and the powder is pushed into the surface of the lumber, and then lumber back to the dispenser, turn over, put on a second layer of fine metal powder and again served in the press, where presses the powder into the surface of the timber with strictly defined pattern, and for the final formation derivatices material it is passed through rollers rolling machine, with derevometallicheskie material prepared in the proportion of wood 98%, small metal filings 2% by weight of the material, and serves to press with a pressure of not less than 7 MPa with a holding time of 30 s, and rolling the resulting material force between the rolls of not more than 20 kN.
However, this method cannot be manufactured beams, precast modified materials, you can only increase the strength of plastic lumber.
In the method of production of construction timber of the modified wood is assumed that the matrix lumber is treated metal surfaces, the ends of the lumber conveyed into contact current ultra high frequency (UHF), which softens the metal on the surface of the lumber, and folded so the beam in the matrix rises up the cylinder until it stops in about rancitelli, upon contact with which the supply of the microwave is stopped, and the metal surface are compressed and cooled, and upon the return movement of the matrix down finished building the timber of the modified wood is removed at prosopagnosic, which frees a matrix for a new cycle of production of construction timber.
The presence of such distinguishing features from the prototype allows us to conclude that the proposed solution has a significant novelty.
For evidence of conformity of the proposed method the criterion of significant differences compared to the main features of the "Method of manufacturing derivatices materials" (Patent RF №2235637) and "method of production of construction timber of the modified wood".
In the result, it was found that in the prototype layer of lumber only hardened fine-grained metal powder, and such lumber may not be laminated construction timber.
The technical result, which gives a positive effect in comparison with the prototype, is determined by the properties and parameters shown in the table.
|Comparison of key indicators|
|Properties and other indicators||The inventive method||Prototype - RF patent №2235637|
|Preparation of lumber||The introduction of fine-grained powder in the faces and the rolling plasti||Rolling plasti by drawing a pattern|
|Composition of modified wood, %:|
- wood fibers;
|Method of preparation layer for bonding||Current ultra high frequency||-|
|Method of bonding timber||Pressing the softened metal powder in the matrix||-|
|Pressure||3 MPa||7 MPa|
|The pressing time||10||30|
The presence of the distinctive features of the proposed method from the prototype allows us to conclude that it meets the criterion of "substantial differences".p> Data analysis the table shows that the inventive method can be implemented, as it has all the original settings.
The drawing shows the General scheme of the method of production of construction timber of the modified wood, over each item shows the status of the modified little metal powder wood.
Information confirming the possibility of implementation of the invention
Method for the production of structural timber from modified wood begins with the filing of the original lumber (1) reverse roller (2) of the dispenser (3) little metal powder (4). Dispenser with metal powder is moved along the plane of the lumber using a reversible conveyor (5), to which it is attached. The operator moves the adjustable slit (6) of the dispenser above the plane of the lumber, and metal powder under air pressure pressed into the fibers of the wood. As soon as the coating metal powder finishes, lumber is automatically transferred to the rolling roller (7), where the lower rollers (8) and the upper rollers (9)connected to the cylinders (10), and finally form the surface of the lumber, depending on requirements, either one layer or two. Then the lumber is passed on about eroticly roller (11), with the rotator (12), and depending on the source material forming the roller (13) collects beams (14) of two or three connected parts, and then assembled beam without stopping is transferred to the matrix (15), which is connected below with hydraulic cylinders (16), and in the upper part has a stopper (17), and in the upper part have special contacts (18), connected by wires (19) with the generator (20) high frequency, and the rod (21) contacts connected to the hydraulic cylinder (22)that through the support (23) can be pulled on the end of the rod contacts and after heating the metal powder in the joints and contact beam with stop immediately disable the generator of the microwave and remove the contacts. Upon further movement of the matrix upside cylinders is pressing structural timber, and it is removed on prosperiety (24) and out of the shop, freeing the matrix for subsequent pressing of construction timber.
Implementation of the proposed method of construction timber of the modified wood will open up new possibilities in the creation of durable derivatices beam with predetermined forms and strength. Such building boards can be used in the most responsible and stressful components of building structures. In addition to contanimation the seams of the boards can be attached to various forms and strength of embedded parts for sealing corners, frames, doors, and similar building structures.
Method for the production of structural timber from modified wood, including forcing little metal powder to the surface of lumber, car plastic rollers to create a uniform coating, the supply of treated lumber in a matrix, wherein the matrix lumber is treated metal surfaces, the ends of the lumber conveyed into contact current ultra high frequency (UHF), which softens the metal on the surface of the lumber, and folded so the beam goes up the cylinders to lock the stopper in contact with which the supply of the microwave is stopped, and the metal surface are compressed and cooled, and upon the return movement of the matrix down ready construction timber from modified wood is removed at prosopagnosic, which frees a matrix for a new cycle of production of construction timber.
SUBSTANCE: converted timber or chip plate is made of eucalyptus breeds and connected by means of binding substance containing isocyanatic or phenol polymeric compound. Eucalypti of the following species were selected: Bluegum (E. Globulus), Karri (E. Diversicolor), Sydney Bluegum (E. Saligna), Marri (E. Calophylla) or Jarrah (E. Marginata).
EFFECT: high surface strength, wet resistance and low swelling ratios.
10 cl, 1 dwg
FIELD: technological processes.
SUBSTANCE: method includes grinding of woodworking wastes or plant materials, mixing with binder and subsequent pressing. Binder is liquid sodium glass that contains dry substance of glass 30-70; water 70-130 wt parts; at that cold pressing is executed, and binder is taken in amount of 20-50 wt parts per 100 wt parts of wastes. Binder may additionally contain hardener - salts of mineral acids in amount of 3-5 wt parts, in this case liquid sodium glass is preliminarily homogenised with hardener.
EFFECT: invention makes it possible to prepare ecologically clean, thermally resistant and moisture resistant items.
8 cl, 3 tbl
SUBSTANCE: rush stems are flattened in rolls, laid mutually perpendicular and milled into shreddings with particle size of 5-15 mm or into powder with particle size of 100-300 mm, saturated with water solution of bakelite resin in amounts of 1-2% or with water solution of wax emulsion, or mixed with heated up to liquid state bitumen or with particles of wire in amounts of 0,5-2%. Then the raw material is heated up to release of proper bonding agents, pressed either in pressing molds or through shaped hole of pressing mold with required products forming and is hold in acclimatisator until cooling.
EFFECT: invention allows for reducing energy consumption and obtaining strong, durable and ecologically clean construction materials, products and structures.
2 cl, 4 ex
SUBSTANCE: reed laminose material is made of dace or southern reed, contains odd, maximum 15, quantity of the layers executed from cut lengthways on thin strips of a reed stalks and laid in an is mutual-perpendicular direction. Strips are impregnated by carbamide, urea-formaldehyde or phenol-formaldehyde gluing compositions with hot solidification and are pressed in compression moulds at temperature 100-140°C and pressure 0.8-1.5 MPa. Equipment for manufacture of a reed-layered material has the conveyor consisting from plates for feed of a reed slab, the slab piercing gear, the directive conveyor connected to hydraulic system and executed with possibility of its movement by the rail together with a cutting frame by means of the longitudinal feed gear. Equipment also contains the horizontal dividing device for reed layer partitioning off from a total mass, directive bulwarks for the reed layer feed on a slab, glue feed system for reed impregnation by glue, the elevating device, the device for lowering of a reed layer on size of the removed layer, with possibility of feed of the received laying in system of hydraulic pressing for formation of a reed-layered material.
EFFECT: invention will allow receiving a material with high technological properties.
2 cl, 5 dwg
FIELD: wood=working industry, in particular, production of presswork from particles of vegetable origin.
SUBSTANCE: in the method for production of composite boards without addition of a binder, from a hydrolyzed lignocelluloses material, before hot pressing, the fibrous mat is formed with the use of a film of polyethylene, up to 0.2 mm thick, laid as a component of the external layers of the pressed composition. Pressing is performed at a temperature of 120 to 140 C and a unit pressure of 50 kg/sq.cm at a duration of pressing of 1 min/1 mm of the board thickness.
EFFECT: enhanced moisture resistance of composite material.
FIELD: wood-working industry, and namely the method of manufacture of the structural unit, in particular, slab of wood fiber, wood chip and/or sawdust, and pressing of fiber, chip, and/or sawdust with applied glue for formation of the structural unit, in particular, slab.
SUBSTANCE: at first the wood fiber, chip and/or sawdust are decomposed by steaming into liquid components and hard components. The liquid components are separated and cooled inside the closed hermetic system up to their discharge from the system. During this process the ecological load caused by odor is sharply reduced. The invention also includes a device for realization of the method and a structural unit manufactured on it.
EFFECT: produced an ecologically pure method for manufacture of slabs and a device for its realization.
46 cl, 3 dwg
FIELD: compositions used for manufacture of plates from wood laminate.
SUBSTANCE: composition for manufacture of plates contains rice shell or rice shell and sawdust mixture used as filler, liquid sodium glass having modulus of 2.4-3.6, and silicon dioxide. Artificial silicon dioxides or siliceous dust-like wastes of various industries may be used as silicon dioxides, with SiO2 content making at least 80%. Composition components are used in predetermined ratio.
EFFECT: improved strength and water tightness, and increased efficiency in utilization of various wastes.
FIELD: wood-working industry.
SUBSTANCE: fiber or chip is dried, then it is mixed with glue at a temperature of below 100C, and a plate is formed at a temperature above 140C, wood is decomposed into solid and liquid components that are used as the glue. The installation for manufacture of the plate has a drying device, device for application of glue onto the fiber or chip, device for compaction, transport facilities for transferring the fiber or chip from the drying device to the device for application of glue, mixer having means for cooling the body. The contents of glue in a plate obtained with the use of the installation makes up 45 to 55 kg per cubic meter of plate.
EFFECT: produced plate with a lower contents of glue as compared with plates produced by the known methods.
31 cl, 2 dwg
FIELD: production of plate material.
SUBSTANCE: proposed composition is made on base of dispersed raw material with modifying additive; plate material is made by molding the said composition at temperature of 160-190°C and pressure of 65-95 kg/cm2; molding time of 1 min per 1 mm of plate thickness. Used as modifying agent are acid by-products of oxidation of cyclohexane of caprolactam process at mass ratio to wood wastes of 50-70:30-50, respectively.
EFFECT: facilitated procedure of production of composition.
FIELD: manufacture of substantially flat articles, for instance particle boards and other articles of industrial wood residue or vegetable raw materials by hot pressing thereof.
SUBSTANCE: method for particle board production involves performing hot molding at temperature of 120-200°C and under pressure of 2.5 - 30.0 MPa for panel forming. Industrial waste, molasses, concentrated corn steep or mixture thereof are used as binding material, wherein lime and starch-containing materials are added to mixture including industrial wood residue or vegetable raw materials and the binding material before hot molding operation beginning.
EFFECT: increased ecological safety and increased strength of the panels.
4 cl, 1 tbl, 1 ex
FIELD: woodworking industry.
SUBSTANCE: invention relates to woodworking industry. The method implies mixing the feedstock mass with the proportion of wood pulp 80%, metal grits 10%, synthetic binding agent 10%. Then the mass is supplied to a common tube by compressed air and moved to a mixing chamber. The mass which is uniformly mixed by a screw and metal discs is supplied from the above chamber to a precompression chamber where its cross-section is formed. Afterwards the precompressed mass is moved to a final treatment unit where the cross-section is finally formed by milling cutters and forming rolls and a composite sleeper of strictly set length is cut off from the endless moving mass by a trimming saw; then the formed composite sleeper is supplied to a conveyor and moved for loading.
EFFECT: can be used in railway sleepers production.
1 dwg, 1 tbl
FIELD: woodworking industry.
SUBSTANCE: invention is related to woodworking industry and may be used in construction of plants for manufacture of composite sleepers for broad gage railway. Retort comprises body, electric motors, transporters, pneumatic pipelines, system for supply of initial raw material elements and collecting of finished produce. Upper part of retort has vertical auger that is connected by means of pneumatic line to bunker-hoppers for supply of initial raw material that consists of 80% wood fiber, 10% of metal chips and 10% of fine powder of worn car and tractor tyres. Mixing knives fill hopper with mixture via truncated cone, and mixture is further supplied to mixing chamber, and then with the help of vertical augers all strictly batched mass arrives to matrix with movable gates and hydropress that finally forms composite sleeper on metal plate, top of which is covered with driven metal tape, which carries composite sleeper out of retort to belt conveyor at open outlet gate.
EFFECT: application of retort increases efficiency of composite sleepers production, reduces operational costs.
3 dwg, 1 tbl
SUBSTANCE: invention relates to track facilities and can be used at sleeper plants for fixing the ties by wires to prevent cracking. The proposed method comprises compressing the tie by a mechanism made up of rollers till a complete snugging of wire against the tie, the wire being twisted to make a twisting assembly. The tie surface is preliminary picked-up to make the holes thereon. The extending wire ends are bent for 95° to 145° and fastened in the said holes.
EFFECT: high-quality tight framing, protection of tie outer surface against cracking.
SUBSTANCE: flow line incorporates tie spikes station comprising interlinked, via transverse conveyors, a tie feeder, a tie sawing unit and a tie spiky machine with an accumulating conveyor and a rejector to move the ties from aforesaid machine and an anti-crack binding section comprising the parallel lengthwise conveyors with the reversing machines arranged there between to bore holes in the ties, to cut thread and screw in the screws. The aforesaid anti-crack-binding section parallel lengthwise conveyors are arranged along the tie travel effected by the transverse conveyors and the accumulating conveyor. A rotary-distributing device is arranged between the aforesaid parallel lengthwise conveyors and the accumulating conveyor to receive the tie rejected from the tie flow on the accumulating conveyor and to turn the said tie through 90°. A receiving-rotary device is mounted at tie delivery from the parallel lengthwise conveyors to receive the ties there from, to turn them through 90° and to transfer them to the tie stacker. The rotary-distributing device represents a platform intended to receive and to transfer the rejected tie, turning through 90° relative to one of its vertical axles provided at its ends to get aligned, in turns, with one of the parallel lengthwise conveyors. The rotary-distributing device represents a platform intended to receive and to transfer the rejected tie, turning through 90° relative to one of its vertical axles and linked with the receive-and-transfer platform to receive the tie in lengthwise direction and subsequent crosswise alignment with the nest parallel lengthwise conveyor.
EFFECT: higher efficiency, reduced sizes.
5 cl, 13 dwg
SUBSTANCE: invention can be used in producing the wooden crossties for the broad gage railways. The method for preventing the crosstie butt from cracking comprises in producing the composition material which consists of 50% of filings, 30% of wood fibers and 20% of polystyrene. Such composition material is flatted and the plate is produced from which the rough workpiece is cut with press, with the size equal to that of the crosstie butt, which then put upon the crosstie butt and pressed into wood. Then, the manipulator with the help of the hydraulic motor turns the crosstie to 180°, and another crosstie butt is pressed into the rough workpiece under pressure not more than 5.0 MPa.
EFFECT: service life of crossties in broad gage railways is increased.
1 dwg, 1 tbl
FIELD: equipment for processing railway cross ties.
SUBSTANCE: product line for repair of wooden railway cross ties contains cross-section conveyors for moving cross ties across the longitudinal axis and parallel longitudinal conveyors for moving cross ties along the longitudinal axis. On cross-section conveyors installation on submission of cross ties on one of bulk cross ties is mounted. The equipment for performance in technological sequence of operations on processing cross ties includes the metal detector, installation of clearing of cross ties, installation sawing the ends of cross ties, installation of fastening of cross ties from cleaving, installation of a notch of cross ties and drilling them, installation of pressing and sealing, installation of accumulation of the repaired cross ties. Longitudinal conveyors for moving cross ties along the longitudinal axis are placed in a direction of moving of cross ties across the longitudinal axis by cross-section conveyors. Installation on submission of cross ties on one of bulk cross ties is equipped by devices canting and turn of a cross tie on 90 degrees for the further moving along the longitudinal axis. The equipment for performance in technological sequence of operations on processing cross ties is placed with an opportunity of an interitem reserve between its adjacent units along one of the parallel longitudinal conveyors, equipped by devices of transfer of rejected cross ties on the second parallel longitudinal conveyor supplied by the device of accumulation of rejected cross ties.
EFFECT: the invention allows to use effectively the process equipment of a line due to simultaneous performance of technological operations that raises its productivity, and spatial dimensions of a line promote its accommodation under of crane zone to a zone of the crane serving a line.
3 cl, 8 dwg
FIELD: wood-working industry, in particular, equipment for preimpregnation treatment of switch ties.
SUBSTANCE: the flow line for working of switch ties has a feeder, accumulator, turner, longitudinal and lateral conveyers, finished products receptacle, pricking and cracking preventing units, each having a feeding mechanism. The accumulator is installed between the units, each unit is provided with a feed control device having a beam pusher, rod made in the form of an incompletely turning shaft kinematically linked with the beam pusher and carrying a feeler mechanism that has a cylindrical surface separated into longitudinal sectors in compliance with the standard sizes of the beams, and cavities and a lug located in accordance with the plan of working of each standard size of the respective beam are made on the working surface of each sector, and a carriage with a lever switch installed for engagement with the front end of the beam, feeler mechanism and the feeding mechanism. As a modification of the invention is a feed control device having a master controller with a set of feed programs in accordance with the plans of working of all the standard sizes of the beams, and the rod is made in the form of a fixed rack carrying the feeler mechanism with the horizontal working surface with cavities made on it and positioned in accordance with the plans of working of beams of all the standard sizes, the beam pusher is provided with a program selector switch coupled to the carriage via the master controller.
EFFECT: produced a flow line for working of the switch tie beams supplied by sets, and providing a high-efficiency operation of the preimpregnation working of beams with automatization of the processes of determination of the beam standard size, adjustment of feeds and monitoring of the feed value for beams of each standard size.
2 cl, 11 dwg
FIELD: construction, particularly to built upper structures of different-purpose railroad tracks.
SUBSTANCE: method involves laying sleepers having 2.75 m lengths along each rail so that the sleepers are spaced 0.5 m apart; connecting sleepers in transversal direction by round timber bars having 30 mm diameters.
EFFECT: reduced volume of laid timber, reduced specific pressure under the same contact stress caused by car wheel acted on subgrade, reduced rail deflection.
FIELD: woodworking industry, particularly adapted to be used on permanent and temporary railroad tracks.
SUBSTANCE: wooden-and-metal sleeper has wooden battens. Support sleeper part for rail laying and for tie plate installation is round and made as two cylindrical battens having diameters of not less than 400 mm and connected one to another by metal rod with diameter of not less than 30 mm.
EFFECT: reduced sleeper mass, decreased wooden material consumption due to short wood cuts usage, increased service life, prevention of ballast tamping under medium part of the sleeper.
2 dwg, 1 tbl
FIELD: railway transport; permanent way.
SUBSTANCE: invention relates to wood-working industry and it can be used on stationary and temporary tracks. Proposed composite tie is made up of two solid wooden bars with three blind holes for thread in each bar interconnected in horizontal plane by three round wooden pegs with left-hand and right-hand thread on ends. Solid wooden bar and one end of round wooden peg in its threaded part are connected by stop wooden bushing. Cross-section of bar corresponds to cross-section of solid bar tie. Invention provides reduction of expenditure of large-size wood, improves condition of track ballast layer, reduces cost of ballast tamping, improved track characteristics, increases service life of its and provides possibility of use of logs of length up to 1 m.
EFFECT: reduced cost of track laying.
1 tbl, 6 dwg
FIELD: railway transport; tie-preparation plants.
SUBSTANCE: invention can be used for treatment of ties at tie impregnation plants. Proposed flowline contains tie-pricking including tie feeder, sawing unit and pricking machine with cross accumulation conveyor to remove ties from pricking machine, section for preventing cracking of ties including parallel longitudinal conveyors with reversible machine tools for drilling holes in ties, thread cutting and driving in screws placed between conveyors. Parallel longitudinal conveyors are arranged square to cross conveyors of tie-pricking section. Additional longitudinal conveyor is placed between parallel longitudinal conveyors being mechanically coupled with accumulation conveyor provided with tie cutoff arrangement for delivering ties one by one to additional conveyor. Additional and parallel longitudinal conveyors are furnished with device for in-turn delivery of ties from additional longitudinal conveyor to parallel longitudinal conveyors made in form of two reciprocating U-shaped receiving pockets arranged over support surface whose dimensions correspond to dimensions of tie, and distance between axes of receiving pockets corresponds to distance between axes of additional and parallel longitudinal conveyors. Cutoff arrangement includes support platform adjoining support surface of additional conveyor equipped with side limiter in slots of which rollers of two levers for engagement with side surface of tie are hinge mounted. Each lever is furnished in its middle part with power cylinder provided with support on its rod to press tie to platform.
EFFECT: provision of high capacity and efficiency of equipment.
3 cl, 5 dwg