Ripper with bidirectional liquid energy accumulator
SUBSTANCE: ripper contains bidirectional liquid energy accumulator, underlying machine, framed suspension with hinged ripper tip mounted on it and elastic system. At that elastic system contains the main cylinder with piston at the rod mounted on the frame and power-operated rod passing through articulated rod and ripper tip. At that the main cylinder is divided by partition into two independent cylinders equipped with main and auxiliary cavity. In auxiliary cavities of cylinders there are installed pistons connected to hollow rods which interact with power-operated rods passing through the main cavities and fixed at inners walls of travelling barrel covering the main cylinder which is connected to ripping rack through a hinge. Auxiliary cavities of each cylinder are equipped with openings from rod side and free piston side, which interact with reversive hydro pump through bidirectional hydraulic locks and pipelines. Besides elastic system is equipped with auxiliary reversive hydro pump which outlet is connected though bidirectional hydraulic locks to openings in walls of the main cylinder cavities while its inlet is connected to pipeline with a tank for liquid storage.
EFFECT: increasing efficiency of soil ripping due to reduction of pulling force and dynamic loads acting on underlying machine and their transfer to the area of soil destruction within the wide range for forced oscillation frequencies of actuating device.
The invention relates to the construction and mining and can be used when developing a robust and frozen ground.
Known Ripper for developing durable and frozen soils, including basic machine, hinged frame with the control mechanism and loosening the rack, which is pivotally mounted on a hinged frame and connected with the latter through an adjustable spring system containing a set of concentric spaced springs (see A.S. No. 594260, IPC 02F 5/30, EPUB).
This Ripper is provided by regulation of the total height of the spring system, but the speed increases rigidity, and the law on which there is a growth stiffness remains the same (the distance between free ends of the springs relative to each other is not regulated).
However, the cutting force on the working body is dependent on the physico-mechanical properties of the developed soil, design of work equipment, modes of motion of the machine base and the other, i.e. the frequency and amplitude of changes in cutting forces can take on different meanings in a wide range of their changes. Therefore, to obtain in loosening the equipment to the desired frequency and amplitude of oscillation of the working body, corresponding to the change of external influences, it is necessary to change the characteristics of rigidity and preliminary tucked up panel is Gogo element within wide limits.
Closest to the claimed Ripper is to develop frozen and solid soils containing basic machine, parallelogram suspension frame, on which the hinge is mounted Ripper tooth, and elastic system containing fixed on the frame of the master cylinder with the piston on the rod, a power shaft, passed through the end wall of the cylinder and connected through a hinge rod from loosening tooth, (see patent No. 1176944, IPC 02F 5/30, published. 07.09.85).
This Ripper, with the aim of improving its service, the main cylinder of the elastic system (battery power) is located outside its auxiliary piston chamber which is communicated with the working cavity using is made in the case of a channel with a controlled valve, and the case of the additional cylinder is connected with the rod of his control cylinders, mounted concentric with the casing of the main cylinder and can move inside made in the rod and the piston of the last cavity, with the power rod is omitted in the cavity of the additional cylinder, which with the help of made in the case of the last hole communicated with the working cavity of the main cylinder.
This elastic system with adjustable parameters is the energy storage unilateral action. When the movement of the rack in the opposite direction, the force of the sun is animalsa elastic element, with constant stiffness. Therefore, in the case of movement Ripper hours on battery power, it's even possible to disengage the rack from the elastic system, which leads to disruption of harmonic or nearly harmonic oscillations of the working body and disturbs the steady driving mode of the base of the machine, thereby increasing the vibration of the machine base, fatigue of the operator, etc. Currently characterized by loss of part of the kinetic energy stored up in the bar, which is dissipated within the system "Ripper hour - elements of the hinge - base machine. The energy input to the destruction of the soil will decrease (see, for example, the book of A.A. Kharkevich Self-oscillations.- M: State publishing house of technical and theoretical literature, 1953.- 170 C, the book of Teodorczyk CYP self-oscillating systems.- M: Gostekhizdat, 1952. - 272, book Lozanskogo L.G. Course of theoretical mechanics. T 2. Dynamics / L.G. loitsyansky, A.I. Lurie. - M.: Nauka, 1983. - 640 (C).
The technical result of the invention is to increase the efficiency of loosening of the soil by reducing the dynamic loads acting on the base machine and the operator, and transmit them to the zone of destruction of soil in a wide range of changes in external loads, enabling remote control of the battery energy.
Results the t is achieved by what a Ripper with liquid energy accumulator double-acting, containing the basic machine, parallelogram suspension frame, on which the hinge is mounted Ripper tooth, and elastic system containing fixed on the frame of the master cylinder with the piston on the rod, a power shaft, passed through the end wall of the cylinder and connected through a hinge rod from loosening tooth, characterized in that the master cylinder of the elastic system is equipped with a partition dividing it into two independent cylinders, each of which is supplied the primary and secondary cavities, and in the additional cavities cylinder pistons installed, connected to a hollow rod communicating via a sealing ring, located on the free end of the hollow rod, with the power rods passed through the main cavity and secured to the inner walls of the rolling cylinder covers master cylinder, and connected via a hinge with ripping stand, with additional cavity of each of the cylinders located in the main cylinder with holes from the side of the rod and the piston is connected by pipeline with a reversible hydraulic pump and hydraulic locks double-acting, elastic system is also provided with an additional reversible hydraulic pump, the output hole of which is connected through hidrotambo double-acting with holes, made in the walls of the main cavity of the cylinder, located at the main and the inlet of the hydraulic pump are connected by a pipeline with the capacity for liquids.
The essence of the invention lies in the fact that the Ripper that includes the basic machine, hinged frame with the control mechanism and ripping rack, mounted on a hinged frame, equipped with a liquid energy accumulator that contains the master cylinder, mounted on a hinged frame and divided by a partition into two independent cylinder, equipped with primary and secondary cavities, and in the additional cavities cylinder pistons installed, connected to a hollow rod communicating via a sealing ring located on the free end of the hollow rod, with the power rods passed through the main cavity and secured to the inner walls of the rolling cylinder covers master cylinder, and connected through a hinge with ripping the counter.
To change the elastic properties of battery energy when moving the movable cylinder in the forward and reverse directions, an additional cavity of each of the cylinders located in the main cylinder with holes-side rod side of the piston and freely interacting with a reversible hydraulic pump, through hidrotambo distroname action is I and pipelines.
To create excess pressure in the main cylinder cavities located in the main cylinder, and the compensation of the leakage of fluid from the system, the energy accumulator is provided with an additional reversible hydraulic pump, the outlet of which is connected through hidrotambo double-acting with holes made in the walls of the main cavity of the cylinder, located at the main and the inlet of the hydraulic pump are connected by a pipeline with the capacity for liquids.
Supply Ripper liquid accumulator of energy, made of master cylinder, mounted on a hinged frame and divided by a partition into two independent cylinder containing primary and secondary cavity defined inside additional cavities pistons connected to a hollow rod communicating via a sealing ring located on the free end of the rod, with the power rods passed through the main cavity and secured to the inner walls of the rolling cylinder covers master cylinder, and connected via a hinge with stand Ripper, Ripper allows the rack to make resonant antiphase harmonic or nearly harmonic oscillations, which reduces vibration transmitted on a basic machine, and contributes lane is giving energy to the destruction of the soil.
The supply of additional cavities of each of the cylinder bores arranged side rod side of the piston and freely interacting with a reversible hydraulic pump, through hidrotambo double-acting and pipelines, allows you to change the elastic properties of the energy accumulator when the movement of the rolling cylinder, both in forward and reverse directions.
Supply of battery power additional reversible hydraulic pump, the outlet of which is connected through hidrotambo double-acting with holes made in the walls of the main cavity of the cylinder, and inlet - pipe with capacity for liquids, you can create excessive pressure in the main cylinder cavities located in the main cylinder, and to compensate for process fluid leakage from the system.
Figure 1 shows the Ripper liquid accumulator of energy, General view. Figure 2 - cross section a-a in figure 1. Figure 3 - liquid battery energy interacting with ripping stand through the hinge rod. Figure 4 - liquid battery power zoom.
Ripper includes the basic machine 1, the hinged frame 2 with hydraulic control and loosening the rack 3 is mounted by means of axles 4 on the frame 2. Hour 3 is connected to the frame 2 through the liquid Akku is ulator energy, enclosed in the housing 5. The energy accumulator contains the master cylinder 6 mounted in the casing 5 and are separated by a partition 7 into two separate cylinder which has a main "A" and an additional "B" cavities. Additional cavities "B" cylinder set piston 8 connected to the hollow rod 9. Hollow rods 9 interact with the power rods 10, passed through the main cavity "A", and attached on the inner wall of the movable cylinder 11, covering the main cylinder 6. The movable cylinder 11 is connected via the hinge rod 12 from loosening stand 3.
Management of the elastic properties of the battery energy is reversible hydraulic pump 13 and the double-acting hydraulic locks 14 connected by a pipe with holes "I"located in the walls of the additional cavities "B".
Creating excessive pressure in the main cavity "A" is more reversible hydraulic pump 15 connected by pipeline with a double-acting hydraulic locks 16 holes "II", made in the walls of the main cavity "A", and the capacity for liquids 17.
The Ripper works as follows.
The reaction that occurs during the development of the ground, rotates the rod Ripper 3 hours around the axis 4. During this 3 hour interacting with an articulated traction 12, the movable cylinder is om 11, power rods 10, changes the force of compression of the liquid in the hollow rod 9 and the main cavities "A", connected with the cavities in the rod 9 holes. Having elastic properties, the liquid, such as kerosene or liquid silicon-based (see the book Basta T.M. Volume hydraulic actuators / T.M. Basta - M.: Mashinostroenie, 1969. - 628, p.57), located in the main cavities "A"determines the oscillatory character of the motion Ripper 3 hours.
Management of the elastic properties of the energy accumulator (depending on the properties of the developed soil) is creating excessive pressure in the main cavity "A" by moving the hollow rod 9 connected to the piston 8. Movement of the piston 8 is flow or sampling fluid from the auxiliary cavities "B" reversible hydraulic pump 13 connected by pipeline with a double-acting hydraulic locks 14 and holes "I"located in the walls of the additional cavities "B".
Creating an excessive fluid pressure in the main cavity "A" of the cylinder, located in the main cylinder 6, and the compensation process fluid leaks from the system is more reversible hydraulic pump 15, a double-acting hydraulic locks 16 connected by piping the output holes "II", the implementation is built in the walls of the main cavity "A".
The intake of fluid and its return to the working cavity is performed using a reversible hydraulic pump 15 and the tank 16 connected by piping with holes "A".
The application of the proposed Ripper containing liquid battery energy double-acting, with simultaneous adjustment of the elastic properties and values prior tucked up liquid, depending on the properties of the developed soil can improve its efficiency and ease of use due to the maximum energy transfer to the destruction of the soil and the minimum for a basic machine.
Ripper with liquid energy accumulator double-acting, containing the basic machine, parallelogram suspension frame, on which the hinge is mounted Ripper tooth, and elastic system containing fixed on the frame of the master cylinder with the piston on the rod, a power shaft, passed through the end wall of the cylinder and connected through a hinge rod from loosening tooth, characterized in that the master cylinder of the elastic system is equipped with a partition dividing it into two independent cylinders, each of which is supplied the primary and secondary cavities, and in the additional cavities cylinder pistons installed, connected to a hollow rod communicating via a sealing ring R is polozhenie on the free end of the hollow rod, with the power rods passed through the main cavity and fixed to the inner walls of the rolling cylinder covers master cylinder and connected via a hinge with ripping stand, with additional cavity of each of the cylinders located in the main cylinder with holes from the side of the rod and the piston is connected by pipeline with a reversible hydraulic pump and hydraulic locks double-acting, elastic system is also provided with an additional reversible hydraulic pump, the outlet of which is connected through hidrotambo double-acting with holes made in the walls of the main cavity of the cylinder, located in the main cylinder and the inlet of the water pump pipe connected to capacity for liquids.
FIELD: engines and pumps.
SUBSTANCE: proposed device comprises control means and detection means. Control means serve to control engine output power for driving the machine. Detection means allow identification of reverse conditions, motion speed and preset gear ratio. In reverse, control means vary output power by control over engine shaft rpm.
EFFECT: fuel savings.
3 cl, 7 dwg
SUBSTANCE: loader boom hydraulic cylinder is proposed, comprising a body, lower and upper covers of the hydraulic cylinder, a braking device and a check valve. At the same time the check valve is made in the form of a cylindrical cap with a spring inside and an inlet nozzle installed in a separate body fixed on the hydraulic cylinder body. Besides, the specified valve communicates with the piston cavity of the hydraulic cylinder by means of an additional hole made in the hydraulic cylinder body.
EFFECT: elimination of piston strikes against a hydraulic cylinder cover as a loader boom is installed in a position of excavating start at the level of the support surface.
SUBSTANCE: collector of bulldozer equipment of an earth mover is proposed, which comprises a body with radial holes for supply and discharge of working fluid, connected as capable of rotation and axial displacement with a blade frame. Inside the body there is a part of a fixed core, installed with a gap into eyes of the blade frame and stopped by the other part against rotation in a lever of a blade lifting mechanism. Besides, the body is equipped with a leash element with a through slot. The fixed core is made with circular grooves for installation of seals and circular bores, communicated with radial holes of the body and channels of supply and discharge of working fluid in the lever of the blade lifting mechanism and axial channels for transfer of working fluid from the lever of the blade lifting mechanism to the blade frame. At the same time the specified axial channels are closed with plugs with seals at the end side of the core and are pressed with a flange on bolts. Connection of the body with the blade frame is carried out by means of a threaded element screwed into the blade frame and stretching via the central axial hole installed into a cut slot of the leash element, a stop made in the form of a four-face rod with a base in the form of a square, with a support site perpendicular to its faces. Between the leash element and the stop in the radial direction there is a gap, the value of which is more than the total value of gaps between the outer surface of the core and inner surfaces of the blade frame eyes. Height from the surface joined with the blade frame to the support site of the stop is more than the thickness of the leash element, and the width of the stop is less than the width of the slot of the leash element.
EFFECT: increased operational resource of a collector due to elimination of direct transfer of loads from a movable part of a machine towards a fixed one.
SUBSTANCE: working mechanism comprises basic mechanism, cab and cab manipulator articulated with basic mechanism designed to change the cab position relative to said basic mechanism. Note here that cab manipulator is equipped with at least one hydraulic actuator to turn the cab about horizontal axis relative to basic mechanism. Note here that said cab id coupled with said manipulator to allow the turns actuated by tilt control hydraulic drive. Besides, said working mechanism includes the cab emergent exit system incorporating one emergent tilt valve for cab tilt adjustment device designed to orient the cab in normal position in emergent exit.
EFFECT: reliable escape of engineman cab.
9 cl, 3 dwg
SUBSTANCE: device to control lifting-digging mechanisms comprises a compressor, an oil and moisture separator and a receiver, pneumatically serially connected to each other. At the same time the outlet of the receiver is pneumatically connected to inlets of adsorbers with evenly distributed heaters, and outlets of adsorbers are pneumatically connected to a load. The compressor is equipped with a suction filter, comprising a casing with a conical bottom, a nozzle of cleaned air exhaust, a condensate extractor, installed in the bottom hole, a reflecting partition and a nozzle of cleaned air supply. The filter casing is made in the form of a double-layer jacket with an air cavity connected by the nozzle of heating regenerated air supply by means of a pipeline and a control valve with adsorbers by a nozzle of heating regenerated air discharge into atmosphere. Evenly distributed heaters in adsorbers are separated by partitions from adsorbent grains. At the same time each of the partitions is made of a bimetal. Besides, the material of the bimetal at the side of the heater has a conductivity ratio that is 2.0-2.5 times higher than the material at the side of adsorbent grains.
EFFECT: maintenance of efficient operation during long-term operation of a control device of lifting-digging mechanisms, by provision of specified quality of compressed air drying due to elimination of thermal damage of adsorbent grains.
SUBSTANCE: fluid-controlled slide valve is arranged between load mechanism hydraulic cylinder rod end and pressure valve inlet line. Control chamber of said valve is communicated with front shutter drive hydraulic cylinder chamber for it to be closed.
EFFECT: independent operation of hydraulic cylinders.
SUBSTANCE: device to control lifting-digging mechanisms comprises a compressor, an oil separator and a receiver, which are pneumatically connected to each other in series. The outlet of the receiver is pneumatically connected to inputs of adsorbers with evenly distributed heaters, and outlets of adsorbers are pneumatically connected to a consumer. The compressor is equipped with a suction filter. The filter is made in the form of a double-layer jacket with an air cavity, connected by a nozzle of input of heating regenerated air. Adsorbers are equipped with a thermoelectric generator comprising a through channel for regenerated air and a through channel for dried compressed air, inside of which there are accordingly hot and cold ends of a set of differential thermocouples.
EFFECT: reduced power inputs when producing compressed air of specified quality for a device of lifting-digging mechanisms control.
SUBSTANCE: pump-accumulator hydraulic drive to rotate an earth-mover platform comprises a controlled pump, hydraulic distributors, safety and check valves, a hydraulic accumulator, a relay controller, connected to each other by hydraulic manifolds, and a controlled hydromotor. At the same time one of hydraulic distributors is installed between the controlled pump and the controlled hydromotor of platform rotation. Safety valves are valves with two adjustment pressures. The second hydraulic distributor is arranged between the controlled pump and the first hydraulic distributor, serving to change power streams from the controlled hydraulic pump to the hydraulic accumulator.
EFFECT: maximum use of kinetic energy of a rotary platform, reduced wear and lower loads in a mechanism of earth-mover platform rotation, reduced quantity of hydraulic scheme elements.
FIELD: machine building.
SUBSTANCE: proposed device comprises first and second engine openings communication L' and N' for communication with two-way hydraulic motor D, and openings M' and O' for communication with manual-control valve H. Besides, valve device comprises normally-closed proportioning load-adjustment valve E and check valve 12 with outlet communicated with aforesaid second opening N' and inlet communicated with opening O'. Note here that check valve 12 is pre-stressed for opening solely in case its inlet exceeds preset pressure range.
EFFECT: higher reliability.
1 cl, 7 dwg
FIELD: machine building.
SUBSTANCE: proposed device comprises first and second openings L and N in two-way hydraulic motor D, tank T, pump I, manual valve H and first retaining valve 1A, 8. Note here that manual valve is arranged to communicated openings L, N with tank T and pump I. Note here said valve H has two positions. In first position, pump I is communicated via pipeline F with first opening L while tank T communicates via pipeline G with second opening N. In second position, pump I communicates via pipeline G with second opening N while tank T is communicated via pipeline F with first opening L. Note here that first retaining valve 1A, 8 is arranged between pump I and second opening N to open toward second opening N. Besides, device comprises piston 2 to control first retaining vale 3 arranged to communicate first opening L with second opening N and to open toward second opening N.
EFFECT: higher efficiency.
9 cl, 6 dwg
SUBSTANCE: ripping equipment of a bulldozer relates to suspension equipment of machines, for instance, tractors, and is designed for ripping of solid rocks and road surfaces, and may also be used for working of frozen soils. The ripping equipment of the bulldozer comprises a support frame rigidly fixed to the rear part of the tractor, on which there are elements of a parallelogram mechanism hingedly fixed, comprising upper and lower traction rods, hingedly connected with a working beam, in which there is a hole for tooth installation, at the same time ripping equipment is equipped with a hydraulic device of tooth control, which is connected by supply sleeves of high pressure with a hydraulic system of suspension equipment of the tractor and is hingedly attached to the support frame and the working beam. The equipment is equipped with the second upper traction rod, the lower traction rod is made in the form of a supporting board, combined with links adjoining its sides into a unified whole, and the hydraulic device of tooth control represents a hydraulic cylinder arranged with the stem down, which is connected with the lower part of the working beam. The supporting board of the lower traction rod has a trapezoidal cut aimed towards the working beam. The hydraulic cylinder is installed along the axis of device symmetry, and upper traction rods - symmetrically at both sides of it. On the support frame in the centre of its upper part there are two eyes rigidly fixed as distant from each other for installation of the axis of hydraulic cylinder body fixation, and at the edges of the support frame there are brackets rigidly fixed with holes on top and bottom accordingly for axes of upper traction rods and axes of links of the lower traction rod. On the working beam in the centre of its lower part there are two eyes rigidly fixed as distant from each other for installation of the axis of hydraulic cylinder stem fixation, and at the edges of the working beam there are brackets rigidly fixed with holes on top and bottom accordingly for axes of upper traction rods and axes of links of the lower traction rod.
EFFECT: simplified design of ripping equipment, improved efficiency and reliability.
5 cl, 4 dwg
FIELD: machine building.
SUBSTANCE: ripper contains a hinged frame and a loosening rack pivotally mounted on a hinged frame and connected to the frame through a spring-loaded energy storage device. At that the spring-loaded energy storage device comprises the body and is equipped with a central disk connected via a rod to a ripper stem. The central disk is adjoined on both sides with additional disks with the rods telescopically mounted in the central part, connected in pairs with the brackets mounted on the free ends of the rods along the diameter line, with the adjusting device in the form of hydraulic cylinders which are placed between brackets. The central disk on both sides and the additional disks on the side of the rods are equipped with the concentrically arranged coil springs, the free ends of which are connected to the internal sides of the ends of the body. The ripper is also equipped with the disk of initial spring load and the rear end of the internal side of the accumulator body and connected by means of the swing link to the disk motion control hydro cylinders installed on the body.
EFFECT: increased efficiency of soil ripping due to reduced traction and dynamic loads acting on the base machine, and their transfer to the zone of destruction of soil in a wide range of the frequency of forced oscillations.
SUBSTANCE: ripper tip includes replaceable tooth and attached seat in top cover of ripper tip. Ripper tooth is protected against rotation within the above top cover of ripper tip owing to locking heavy-shrink fitting so that the replaceable ripper tooth does not rotate when it is being used. Locking heavy-shrink fitting prevents penetration of solid particles into the gap between the walls of the above tooth and the above attached seat. Tooth has locking cone-shaped stock, and the above seat is provided with cone-shaped hole to be adjoined to the above locking cone-shaped stock. Tooth is cone-shaped and ends with a tip. Tip is made from high-strength material. Ripper tooth includes head section made at least partially from high-strength material. Top cover and ripper tooth form conjugation between seat and stock of ripper tooth having the corresponding shape; at that, seat and stock of ripper tooth have inner cone for formation of clamping cone between top cover and tooth; at that, ripper tooth is removed from cover in case of failure of clamping cone. Seat with inner cone forms some part of section for arrangement of ripper tooth in the cover, and the above stock of ripper tooth having the corresponding shape forms the part of ripper tooth. In stock of ripper tooth and section for arrangement of ripper tooth there made are through transverse channels the axial lines of which are aligned in case of fixture in the seat of stock of ripper tooth, which allows inserting the retaining pin. Head section of ripper tooth includes outward protruding arm enabling removal of ripper tooth. Section for arrangement of ripper tooth includes displacement hole that passes from external section of ripper tip to the area of base of the above seat, which allows displacing the tooth at available corresponding tool.
EFFECT: improving wear resistance and service life and economic effectiveness.
21 cl, 14 dwg
SUBSTANCE: impact ripper consists of base machine, of mounted frame 1, of hydro-cylinder and pneumatic hammer 3. Pneumatic hammer 3 contains a case with piston-die 5 and tooth 4 installed inside. The ripper is equipped with at least one beam 6 connected to mounted frame 1 by means of rotation axle 7 and balance weight 8. Also pneumatic hammer 3 and balance weight 8 are arranged on beam 6 and designed to travel along it.
EFFECT: increased efficiency of soil ripping and reduced dynamic loads affecting base machine.
SUBSTANCE: invention is related to construction and mining, and may be used in development of hard rocks, firm and frozen soils. Impact ripper includes basic machine, equal-arm lever mounted on hinged frame with main and additional pneumatic hammers, cavities of which are separated with piston-strikers, and air-distributing system that contains air distributor 12 and air manifold. Air distributor is arranged in the form of body and has rotor 13, which rests with journals via bearings 14 and 15, installed in bodies of couplers 16 and body of air distributor. Inside rotor 13 there are two non-communicating holes 17, arranged along radial lines. On generatrix of rotor 13 there are grooves 18, which are connected to radial holes 17. In journals of rotor 13 there are channels 19, which connect holes 17 to bores and channels 21, arranged in bodies of couplers 16. One of rotor 13 journals is connected via flanged coupler 22 to electric motor 23.
EFFECT: improved efficiency of ripper operation, simplification and increase of operation reliability.
SUBSTANCE: invention concerns ground development by diggers and can be applied in mining, in construction for communication channel and line laying in hard and frozen soil and rock. Vibration ripper includes basic machine, parallelogram suspension, bearing beam 3, struts 5 with ripping cogs, vibration exciters. Articulated supports 8 are mounted at the top part of struts 5 and linked to resilient element 9. Resilient element is made in the form of pneumatic cylinder 9 including two equal chambers encasing force variation pistons 10 connected over stocks 11 and control rods 12 to top parts of struts 5. Each pneumatic cylinder chamber features volume variation pistons 13 connected by concentric stocks 14 over links 15 to hydraulic cylinders 16 controlling chamber volume and mounted at the ends or pneumatic cylinder 9.
EFFECT: enhanced efficiency of ground ripping.
FIELD: mining industry.
SUBSTANCE: invention can be used in working members of mining and earth-moving machines, particularly, in machines for digging hard and frozen soils. Proposed ripper point for breaking hard and frozen soils has shank with slot for fastening, and wedge-like working part formed by front end surface, two side surfaces and rear surface. Working part of front end surface located in place of intensive wear is reinforced along longitudinal axial line H-H by three of stress concentrators, being round elements projecting over front end working surface and dipped into body of point. Distance L between concentrators in row and distance 1 between rows is equal to triple value of their diameter.
EFFECT: reduced effort to applied to small soil, reduced power consumption for ripping, increased service life of ripper point.
FIELD: mechanical engineering.
SUBSTANCE: the bearing-rotary device in the engineer track vehicle is installed in the nose section of the chassis on the side of the tower of and positioned in the armored hull, it is fastened in cantilever in the tower and made in the form of a low-profile straight cylinder with a bottom shaped as a ball segment. An opening is made in the segment on the side of the tower for disposition of the drive of the bearing platform. The upper part of the portal is cylinder-shaped and provided with a boom rotation mechanism. An ogee is made on the retractable section of the boom, at the end of the projecting part positioned are ears with an axle installed on which are the excavator dipper and the tooth-ripper positioned under the excavator dipper for provision of separate or joint operation by formation of a gripping working member. The wall of the retractable section positioned on the opposite side of the ogee is additionally provided with a cargo-catching hook hanger for applying hoist slings to the cargo. Brackets are made on the lateral walls of the retractable section, fastened in whose ears are two short-range hydraulic cylinders linked with the tooth-ripper through a leverage with formation of a drive for turning and fixing the shaped cutouts for arrangement of the hydraulic cylinders of the tooth-ripper drive at a shift of the boom from the operating to traveling position are made in the lateral walls of the boom bearing section on the side of the retractable section.
EFFECT: expanded functional potentialities of the vehicle, enhanced protection of the bearing-rotary device.
6 cl, 12 dwg
FIELD: building equipment, particularly adapted to develop frozen and firm ground.
SUBSTANCE: device has tractor, executive tool formed as band with wedges secured thereto, executive tool frame, which connects the executive tool with tractor, and power source installed on executive tool frame. Device additionally comprises gantry connected to the tractor, vertical frame secured to gantry and cantledge lever. One lever end is pivotally connected to vertical frame. Central lever part is freely supported by executive tool frame through roller. Cantledge is installed on free lever end. Vibrator is rigidly secured inside executive tool frame, wherein the executive tool frame is three-dimensional and connected to vertical frame to perform rotation relative tractor in horizontal and vertical planes. Wedges are solid and cutting faces thereof are oriented along tractor travel direction axis. Band and cutting faces of the wedges form cutting disc having round continuous cutting edge.
EFFECT: increased capabilities due to possibility of ground cutting parameters regulation.
FIELD: mining and building, particularly for layered ground cutting by impulse compressed gas pressure application to the ground.
SUBSTANCE: device has load-bearing frame with vertical guiding shafts and cams connected thereto, gas-dynamic rippers with tubular rods. Connected to rods are screw heads with exhaust orifices, discharge bushes, working chambers, annular cases of gas-distribution units connected to vertical guiding shafts by means of brackets and enclosing vertical guiding shafts of sliding bushes. The device also has protective screen composed of several sections located at different levels along device height, movably connected to lower ends of vertical guiding shafts and eccentrically located relative central orifices adapted to receive tubular rods of gas-dynamic rippers formed in each protective screen section. Device also has supply system for -dynamic rippers. Upper parts of vertical guiding shafts may perform rotation through 0°-360° with fixation thereof and are installed in concentric orifices formed in load-bearing frame. Each cam has orifice for cam fixing in determined position. The orifices are eccentric to longitudinal vertical guiding shaft axis. Load-bearing frame also has concentric orifices formed with regard to each concentric orifice adapted for vertical guiding shaft installation. Concentric orifices of load-bearing frame are used for fixed cam connection with load-bearing frame. The connection is made as locking bolt installed in cam orifice and in one concentric orifice of loaf-bearing frame.
EFFECT: increased capacity.
2 cl, 6 dwg
FIELD: mining industry; civil engineering.
SUBSTANCE: invention can be used in rippers of gas-dynamic action for loosening firm and frozen soils. Proposed gas-dynamic ripper has hollow rod housing installed coaxially and connected mechanically with housing of screw head with exhaust holes, vertically installed gui9de shaft for fastening on frame of base machine on which bracket is installed for longitudinal displacement with fitted-on bushings for connection with shaft, cocks to control delivery of compressed gas and pipelines to deliver compressed gas from supply source to gas distributor made in form of pneumatic accumulator with hollow shank secured on hollow rod housing, and ring housing with three ring channels in its wall rigidly connected with bracket, coaxially installed inner and outer supply pipes, exhaust control valve installed in screw head installed for limited axial displacement inside housing of screw head and interacting with seat for communicating ring clearance between seat and inner supply pipe with exhaust holes in housing of screw head are provided with control space and inner supply pipe arranged in control space, spring to press valve to seat, and piston for forced displacement of gas installed inside hollow rod housing for limited axial displacement. One of ring channels in wall of ring housing communicates through cock with pipeline to deliver compressed gas from supply source, and it communicates through radial channels made in ring housing through inner supply pipe with valve control space to communicate ring clearance between seat and inner supply pipe with exhaust holes in screw head housing. Space of pneumatic accumulator communicates with atmosphere and with supply source through compressed gas supply control cock, pipelines, ring channel with radial channels in wall of ring housing, radial channels and inner space in shank. Ring clearance between seat and inner supply pipe communicates with supply source through compressed gas supply cock, pipelines, ring channel with radial channels in wall of ring housing and outer supply pipe. Housing of pneumatic accumulator is made in form of hollow cylinder with lower and upper flanged parts provided with concentric holes for coaxial fastening of upper flanged part of pneumatic accumulator to flanged part of hollow shank, for coaxial fastening of lower flanged part of pneumatic accumulator to flanged part of hollow rod housing made at a distance from its upper end face equal to height of housing of pneumatic accumulator. Seat installed on upper end face of hollow rod housing for limiting upwards movement of forced gas displacement piston. Spring for limiting downward movement of forced gas displacement piston is installed on upper end face of seat to limit upward movement exhaust control valve. Outer supply pipe is installed in central hole of forced gas displacement piston.
EFFECT: increased efficiency.