Amortizing foundation rack for equipment

FIELD: construction.

SUBSTANCE: amortizing foundation rack for equipment includes a casing installed on the lower structure with a gap in relation to the upper building and a rod placed in the casing; the rack is equipped with a spring placed between the upper and the lower structures and covering the casing made from coaxial sections, the top outer one and the bottom inner one, with blocks installed on the upper end of the bottom section; the rod is made with a pivot hingedly attached to its lower end, suspended through cables enveloping the blocks to the bottom of the upper casing section. The spring, installed between the lower and upper structures of the foundation, is made in the form of a combined spring with an integrated damper, containing the lower and upper support plates, between which coaxially and concentric the external with right and internal with left angles of turns rise springs are installed. The lower support plate is the basis on which the lower flanges of springs are rigidly fastened, and between the upper support plate and the upper flange of the inner springs with left angle turns, a dry friction damper is installed consisting of two contacting with each other, lower and upper cylindrical disks. The lower disk is rigidly connected to the upper flange of the inner spring, and the upper disc is rigidly connected to the upper support plate. On the surfaces of cylindrical disks of the dry friction damper, facing each other, concentric diametric grooves are made on one of the disks, and bulges on another disk included with each other. As the materials of the lower and upper cylindrical disks of the dry friction damper, a sintered friction material based on copper may be used containing zinc, iron, lead, graphite, vermiculite, copper, chromium, antimony and silicon, with the following component ratio, by weight%: zinc 6.0÷8.0; iron 0.1÷0.2; lead 2.0÷4.0; graphite 3.0÷7.0; vermiculite 8.0÷12.0; chrome 4.0÷6.0; antimony 0.05÷0.1; silicon 2.0÷3.0; copper is the rest.

EFFECT: increased vibration damping efficiency, reduced dynamic loads on the lower structure of the foundation.

2 cl, 2 dwg

 



 

Same patents:

FIELD: construction.

SUBSTANCE: foundation of a bearing support of a carousel comprises a bearing support and a foundation arranged in soil. Besides, the foundation is made as demountable, and comprises at least three foundation slabs tightened by threaded screwed bolts, between two lower ones of which there are freely arranged spacer rings with wedges creating a closed circular system. At the same time each spacer ring is made as interacting via wedge pairs with two wedges with the possibility to increase the perimeter of the closed circular system towards the soil.

EFFECT: simplified control of a carousel from inside.

2 dwg

FIELD: electricity.

SUBSTANCE: support-bearing structure for a transportable electric discharge laser comprises a foundation block and a bath. The foundation block is made in the form of a frame from pipes of rectangular cross section, with a board placed on it and rigidly fixed with it. Pipes in the frame are arranged in longitudinal and transverse directions, besides, pipes of one direction are arranged at the distance from each other and are rigidly connected to pipes of another direction. The bath is fixed on the frame, the board is tightly fixed above the bath filled with liquid dielectric, at the same time in the board there is a through hole arranged above the bath.

EFFECT: provision of high strength and stiffness of design with minimum dimensions and weight, making it possible for a laser to operate even under intensive mechanical loads, arising in process of transportation, increased extent of mobility and functionality of a laser, increased reliability and increased resource of laser operation, provision of design manufacturability, reduced cost of manufacturing.

2 dwg

FIELD: construction.

SUBSTANCE: method of manufacturing a concrete platform for attachment of a supported object involves s stage of making a formwork including a pair of concrete side walls and concrete bottom panel which connects the pair of concrete side walls; stage of formwork mounting on multiple pillars; stage of concrete casting into the framework mounted on multiple pillars.

EFFECT: reduced labour and material consumption.

9 dwg

FIELD: construction.

SUBSTANCE: method to pour a concrete mix under process equipment at the final stage of its assembly includes installation of a curb along the foundation contour and an accumulating tray with submersible vibrators included in it. Vibration treatment of the concrete mixture in the process gap between the equipment stand and the foundation is carried out on the entire way of its movement from the accumulating tray to the vibration shell by means of rods placed along the entire area of pouring, ends of which are fixed in a rigid vibration shell, located at the equipment side opposite to the accumulating tray.

EFFECT: higher efficiency of works due to less time spent to fill a process gap with a concrete mix, provision of even distribution of density of a concrete mixture along entire area, higher strength of poured concrete, no limitations in dimensions and configuration of equipment in plan.

2 cl, 1 dwg

FIELD: construction.

SUBSTANCE: method for erection of foundation under machines consists in deepening of massive reinforced concrete foundation foot of rectangular or prismatic shape in plan into ground base by ≥¼ of its height, but at least 1 m, its hydraulic insulation against hazardous effect of aggressive ground waters and arrangement of centre of gravity of machine and center of gravity of foundation foot area on the same vertical line, at the same time support surface of foundation is accepted as having area calculated according to given dependence. Support surface of foundation, which is rectangular in plan, is arranged with foot of spherical convex shape, at the same time given dependences are used to identify radius, angle of sector of elastic half-contact of sphere with ground, pressure of structural strength of ground for stretching, critical pressure under center of sphere, besides sphere of foundation is deepened. Support spherical surface is prevented against displacements with slippage and against tilting under action of external dynamic load by increasing edge horizontal support part of foundation rectangular in plan, protruding beyond edges of spherical support central surface, or by anchoring foundation to soil by means of piles. Also arrangement of foundation for machines is proposed.

EFFECT: increased bearing capacity, increased service life.

4 cl, 2 ex, 15 dwg

FIELD: construction.

SUBSTANCE: inventions relate to the field of foundation engineering of deep burial for important objects, such as nuclear power plants. Method for erection of nuclear power plant foundation consists in engineering-geological survey with detection of soil foundation layers depth, which complies with depth of active compressing thickness H, its physical-mechanical properties: angle φ of inner friction, c - specific adhesion, γ - density, E0 - module of common deformation, µ0 - coefficient of Poisson, which correspond to design elastic compressing load under deep buried foundation, in erection of mine pit with shape that corresponds to foundation, filling of filled layer of soil onto mine pit bottom and its compaction, erection of curb with reinforcement frame inside and its filling with high grade concrete. Foundation, which is solid in plan, is given convex spherical shape, which is inscribed in plan into configuration of monolithic foundation by radius of circumference, radius of sphere is identified by given dependencies, as well as maximum angle of elastic semi-contact of foundation sphere with soil foundation, pressure of structural tensile strength of foundation, central critical pressure under center of sphere in maximum elastic base. Bottom of mine pit for concave foundation is arranged with response spherical groove.

EFFECT: improved bearing capacity of foundation, improved elastic contact interaction of foundation with underlying soil foundation.

2 cl, 7 dwg

FIELD: construction.

SUBSTANCE: invention is related to means of protection against hazardous effect of vibration and may be used in construction, in particular in arrangement of vibration-insulated foundations for machines and equipment with dynamic loads. Foundation on vibroprotective elements comprises bath, foundation unit arranged in it with clearance versus walls and bottom and hingedly joined to vibration isolators installed in bath bottom. Vibration isolators are joined to foundation unit by means of hinged lever, which connects foundation unit to support element of vibration isolator, which comprises elastic element, body and pendulum suspension. Body is arranged in the form of box with lower base and upper plate with hole for threaded pin of pendulum suspension, which are connected to each other by three side ribs, with creation of window for accommodation of support lever, on which vibration-insulated object is arranged. Elastic element is arranged in the form of three serially connected elements: elastic ones and elastic-damping element arranged in between. Elastic elements with one of their bases are installed in bushes, which are fixed accordingly on upper plate of body and cover, and rest against washers with their other bases, and washers are joined with elastic-damping element. Pendulum suspension is arranged in the form of threaded pin, which is connected by one end to support lever for fixation of vibration-insulated object, and by other end - to nut and thrust washer, which is joined to cover attached to elastic element. Elastic-damping element is arranged in the form of steel-wire weaving or metal thread waste.

EFFECT: increased efficiency of spatial vibration insulation and simplified design.

2 dwg

FIELD: vibration protection, particularly to erect vibroinsulated foundations for machines and equipment subjected to dynamic loads.

SUBSTANCE: vibroinsulated foundation comprises bath, foundation block arranged in the bath so that the foundation block is spaced from bath walls and bottom and is pivotally connected to vibroinsulators. Each vibroinsulator is attached to foundation block by means of pivoted lever, which connects foundation block with support member of vibroinsulator. Each vibroinsulator has pendulum hanger made as threaded rod with spherical profile on one end thereof and comprises threaded bush fastened to the rod and having spherical profile. Both spherical profiles cooperate with conical surfaces of support vibroinsulator member and upper conical bush correspondingly. The resilient member of vibroinsulator is made as a number of serially connected resilient elements secured to bush along outer diameters thereof. The bush is fixedly connected to vibroinsulator base. Inner resilient element diameters are attached to bush, which encloses rod. One bush end abuts the last resilient element, another end cooperates with upper conical bush. Each annular resilient element may be formed as at least two flat resilient coaxial rings, namely inner and outer ones, which are fastened with each other by at least three resilient flat plates or resilient rods having round or polygonal sections. Each annular resilient element may be formed of at least two flat coaxial resilient rings, namely of upper and lower ones, connected with each other by at least three resilient flat plates, which are inclined to ring axes, or resilient rods having round or polygonal sections.

EFFECT: increased efficiency of volumetric vibroinsulation and simplified structure.

3 cl, 5 dwg

FIELD: vibration protection means for building industry, particularly vibroinulated foundations for machines, engines, or ordnance.

SUBSTANCE: vibroinsulated foundation comprises bath and foundation block arranged in the bath so that the foundation block is spaced from bath walls and bottom. The foundation block is higedly connected with bumpers, which in turn are attached to foundation block by means of hinged lever. The lever connects foundation block with support member of bumper. The bumper has pendulum suspension means made as threaded rod with spherical profile on one rod end and threaded bush also having spherical profile. Both spherical profiles cooperate with conical surfaces of upper and lower plates correspondingly. Resilient member is made as serially connected resilient disc means formed as disc springs connected with each other along outer diameters by means of ring having T-shaped profile and along inner diameters by means of ring having inner surface cooperating with outer bush surface. One bush end is fixedly secured to the base, another bush end is slidably installed in guiding bush.

EFFECT: increased efficiency of three-dimensional vibration protection and simplified foundation structure.

2 dwg

FIELD: vibration protection means for building industry, particularly vibroinulated foundations for machines, engines, or ordnance.

SUBSTANCE: vibroinsulated foundation comprises bath and foundation block arranged in the bath so that the foundation block is spaced from bath walls and bottom. The foundation block is higedly connected with bumpers, which in turn are attached to foundation block by means of hinged lever. The lever connects foundation block with support member of bumper. The bumper has pendulum suspension means made as threaded rod with spherical profile on one rod end and threaded bush also having spherical profile. Both spherical profiles cooperate with conical surfaces of upper and lower plates correspondingly. Resilient member is made as serially connected resilient discs connected with outer bush surface along inner disc diameters. One bush end is fixedly secured to the base, another bush end is slidably installed in guiding bush.

EFFECT: increased efficiency of three-dimensional vibration protection and simplified foundation structure.

2 dwg

FIELD: construction, particularly new building erection and existent building reconstruction under any engineering-geological circumstances.

SUBSTANCE: foundation structure comprises shallow foundation and reinforcement members. Reinforcement members are made as vertical bars of precast or cast-in-place piles having diameters less than 200 mm and arranged along foundation perimeter. The piles are spaced a distance from outer foundation faces. The distance is equal to 0.1-0.5 of reinforcement member diameter. Distance between neighboring piles is equal to 2-4 reinforcement member diameters and reinforcement member length is 15-20 diameters thereof.

EFFECT: increased load-bearing capacity due to creating compressive operational conditions under different engineering-geological circumstances, increased dynamic rigidity of foundation base and reduced foundation deformation and vibrational amplitude.

9 dwg

FIELD: mechanical engineering, particularly large electrical machines and foundations for turbogenerator and hydraulic generators.

SUBSTANCE: foundation slab comprises stator body base including support part connected with foundation. Arranged between support part and foundation is damping panel including reinforcement formed as vertical rods. Foam plastic member is put on the vertical rods and grouted with concrete grout. Vertical rods are connected one to another in horizontal plane with wire arranged at least in two levels in vertical plane of damping panel. Vertical rods extend through support part, pass into stator body base and into foundation.

EFFECT: reduced dynamic pressure applied to foundation slab and increased structural rigidity.

1 dwg

FIELD: vibration protection means for building industry, particularly vibroinulated foundations for machines, engines, or ordnance.

SUBSTANCE: vibroinsulated foundation comprises bath and foundation block arranged in the bath so that the foundation block is spaced from bath walls and bottom. The foundation block is higedly connected with bumpers, which in turn are attached to foundation block by means of hinged lever. The lever connects foundation block with support member of bumper. The bumper has pendulum suspension means and comprises compression spring cooperating with the base and with the pendulum suspension means. The pendulum suspension means is made as threaded rod connected to spherical washer formed on one end thereof and with threaded bush also attached to spherical washer end not connected with threaded rod. The spherical washers cooperate with not less than 3 balls located on conical surfaces of support members and cooperating with upper spring end and object to be protected against vibration correspondingly. Buffer limiting elastomeric members are installed in base.

EFFECT: increased efficiency of vibration protection and simplified foundation structure.

2 dwg

FIELD: vibration protection means for building industry, particularly vibroinulated foundations for machines, engines, or ordnance.

SUBSTANCE: vibroinsulated foundation comprises bath and foundation block arranged in the bath so that the foundation block is spaced from bath walls and bottom. The foundation block is higedly connected with bumpers, which in turn are attached to foundation block by means of hinged lever. The lever connects foundation block with support member of bumper. Bumper has resilient member formed as two serially connected elastic resiliently-damping members divided with washer. Pendulum suspension means of the bumper is made as threaded pin having the first end connected to hinged lever and the second end connected to nut and thrust washer, which are connected to bush. The bush is attached to resilient member. The thrust washer is made of resilient material. Resiliently-damping member is formed as pleached strands or tangled wires.

EFFECT: increased efficiency of three-dimensional vibration protection and simplified foundation structure.

2 dwg

FIELD: vibration protection means for building industry, particularly vibroinulated foundations for machines, engines, or ordnance.

SUBSTANCE: vibroinsulated foundation comprises bath and foundation block arranged in the bath so that the foundation block is spaced from bath walls and bottom. The foundation block is higedly connected with bumpers, which in turn are attached to foundation block by means of hinged lever. The lever connects foundation block with support member of bumper. The bumper has pendulum suspension means made as threaded rod with spherical profile on one rod end and threaded bush also having spherical profile. Both spherical profiles cooperate with conical surfaces of upper and lower plates correspondingly. Resilient member is made as serially connected resilient discs connected with outer bush surface along inner disc diameters. One bush end is fixedly secured to the base, another bush end is slidably installed in guiding bush.

EFFECT: increased efficiency of three-dimensional vibration protection and simplified foundation structure.

2 dwg

FIELD: vibration protection means for building industry, particularly vibroinulated foundations for machines, engines, or ordnance.

SUBSTANCE: vibroinsulated foundation comprises bath and foundation block arranged in the bath so that the foundation block is spaced from bath walls and bottom. The foundation block is higedly connected with bumpers, which in turn are attached to foundation block by means of hinged lever. The lever connects foundation block with support member of bumper. The bumper has pendulum suspension means made as threaded rod with spherical profile on one rod end and threaded bush also having spherical profile. Both spherical profiles cooperate with conical surfaces of upper and lower plates correspondingly. Resilient member is made as serially connected resilient disc means formed as disc springs connected with each other along outer diameters by means of ring having T-shaped profile and along inner diameters by means of ring having inner surface cooperating with outer bush surface. One bush end is fixedly secured to the base, another bush end is slidably installed in guiding bush.

EFFECT: increased efficiency of three-dimensional vibration protection and simplified foundation structure.

2 dwg

FIELD: vibration protection, particularly to erect vibroinsulated foundations for machines and equipment subjected to dynamic loads.

SUBSTANCE: vibroinsulated foundation comprises bath, foundation block arranged in the bath so that the foundation block is spaced from bath walls and bottom and is pivotally connected to vibroinsulators. Each vibroinsulator is attached to foundation block by means of pivoted lever, which connects foundation block with support member of vibroinsulator. Each vibroinsulator has pendulum hanger made as threaded rod with spherical profile on one end thereof and comprises threaded bush fastened to the rod and having spherical profile. Both spherical profiles cooperate with conical surfaces of support vibroinsulator member and upper conical bush correspondingly. The resilient member of vibroinsulator is made as a number of serially connected resilient elements secured to bush along outer diameters thereof. The bush is fixedly connected to vibroinsulator base. Inner resilient element diameters are attached to bush, which encloses rod. One bush end abuts the last resilient element, another end cooperates with upper conical bush. Each annular resilient element may be formed as at least two flat resilient coaxial rings, namely inner and outer ones, which are fastened with each other by at least three resilient flat plates or resilient rods having round or polygonal sections. Each annular resilient element may be formed of at least two flat coaxial resilient rings, namely of upper and lower ones, connected with each other by at least three resilient flat plates, which are inclined to ring axes, or resilient rods having round or polygonal sections.

EFFECT: increased efficiency of volumetric vibroinsulation and simplified structure.

3 cl, 5 dwg

FIELD: construction.

SUBSTANCE: invention is related to means of protection against hazardous effect of vibration and may be used in construction, in particular in arrangement of vibration-insulated foundations for machines and equipment with dynamic loads. Foundation on vibroprotective elements comprises bath, foundation unit arranged in it with clearance versus walls and bottom and hingedly joined to vibration isolators installed in bath bottom. Vibration isolators are joined to foundation unit by means of hinged lever, which connects foundation unit to support element of vibration isolator, which comprises elastic element, body and pendulum suspension. Body is arranged in the form of box with lower base and upper plate with hole for threaded pin of pendulum suspension, which are connected to each other by three side ribs, with creation of window for accommodation of support lever, on which vibration-insulated object is arranged. Elastic element is arranged in the form of three serially connected elements: elastic ones and elastic-damping element arranged in between. Elastic elements with one of their bases are installed in bushes, which are fixed accordingly on upper plate of body and cover, and rest against washers with their other bases, and washers are joined with elastic-damping element. Pendulum suspension is arranged in the form of threaded pin, which is connected by one end to support lever for fixation of vibration-insulated object, and by other end - to nut and thrust washer, which is joined to cover attached to elastic element. Elastic-damping element is arranged in the form of steel-wire weaving or metal thread waste.

EFFECT: increased efficiency of spatial vibration insulation and simplified design.

2 dwg

FIELD: construction.

SUBSTANCE: inventions relate to the field of foundation engineering of deep burial for important objects, such as nuclear power plants. Method for erection of nuclear power plant foundation consists in engineering-geological survey with detection of soil foundation layers depth, which complies with depth of active compressing thickness H, its physical-mechanical properties: angle φ of inner friction, c - specific adhesion, γ - density, E0 - module of common deformation, µ0 - coefficient of Poisson, which correspond to design elastic compressing load under deep buried foundation, in erection of mine pit with shape that corresponds to foundation, filling of filled layer of soil onto mine pit bottom and its compaction, erection of curb with reinforcement frame inside and its filling with high grade concrete. Foundation, which is solid in plan, is given convex spherical shape, which is inscribed in plan into configuration of monolithic foundation by radius of circumference, radius of sphere is identified by given dependencies, as well as maximum angle of elastic semi-contact of foundation sphere with soil foundation, pressure of structural tensile strength of foundation, central critical pressure under center of sphere in maximum elastic base. Bottom of mine pit for concave foundation is arranged with response spherical groove.

EFFECT: improved bearing capacity of foundation, improved elastic contact interaction of foundation with underlying soil foundation.

2 cl, 7 dwg

FIELD: construction.

SUBSTANCE: method for erection of foundation under machines consists in deepening of massive reinforced concrete foundation foot of rectangular or prismatic shape in plan into ground base by ≥¼ of its height, but at least 1 m, its hydraulic insulation against hazardous effect of aggressive ground waters and arrangement of centre of gravity of machine and center of gravity of foundation foot area on the same vertical line, at the same time support surface of foundation is accepted as having area calculated according to given dependence. Support surface of foundation, which is rectangular in plan, is arranged with foot of spherical convex shape, at the same time given dependences are used to identify radius, angle of sector of elastic half-contact of sphere with ground, pressure of structural strength of ground for stretching, critical pressure under center of sphere, besides sphere of foundation is deepened. Support spherical surface is prevented against displacements with slippage and against tilting under action of external dynamic load by increasing edge horizontal support part of foundation rectangular in plan, protruding beyond edges of spherical support central surface, or by anchoring foundation to soil by means of piles. Also arrangement of foundation for machines is proposed.

EFFECT: increased bearing capacity, increased service life.

4 cl, 2 ex, 15 dwg

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