Impact damping apparatus

FIELD: mechanical engineering.

SUBSTANCE: impact damping apparatus has plastically deformed rod-like member connected to supporting members positioned respectively on object to be protected and protective object. Plastically deformed rod-like member is passed through openings provided through supporting members. Supporting members connected to object to be protected and supporting members connected to protective object are positioned lengthwise of plastically deformed rod-like member in next-but-one arrangement. Plastically deformed rod-like member is formed as set of joined links which are connected with one another so that upon application of impact force adjacent links move relative to one another along central axis of plastically deformed rod-like member. Adjacent supporting members are equally spaced from one another.

EFFECT: increased efficiency by optimized force characteristics.

11 cl, 9 dwg

 

The invention relates to the field of engineering, namely, devices single actions, absorbing the impact energy through plastic deformation in bending, and can be used for damping shocks in containers with radioactive materials.

The known device for damping shocks in which to absorb the impact energy applied plastically deformable upon impact elements, in particular stretchable rods of plastic metals, curving rods and plates (Kruglov Y.A., Mists Y.A Drovepast machines, equipment and apparatus. - Leningrad: Mashinostroenie, Leningrad. separa-tion, 1986, p.123-124). These devices differ exact fixation securable to the moment of impact, virtually unlimited shelf life, no special maintenance, constant availability, low cost and simplicity. They are used in engineering systems udorozhit in emergency situations.

However, optimization of power characteristics of such devices requires experimental research and testing.

Known shock resistant shock of single action for patent RU 2129229 C1 (F16F 7/12, 1999). The known device comprises an energy-absorbing elements and the base, which is fixed to the first ends of the energy absorbing elements. Ka is every energy-absorbing element is designed in the form of two plastically bent rods, facing each other, the ends of which are rigidly interconnected at one point. When this second ends of the energy absorbing elements are made with the possibility of fixing on the protected object, and the point of connection of the rods of each energy absorbing element is displaced relative to a line passing through the point of attachment of its ends. This embodiment of the shock absorber allows you to optimize the power characteristic which approaches the ideal constant force resistance to deformation.

However, the known device has limited use.

The closest to the essential characteristics of the claimed invention is a device for damping shocks contained in the description of the invention under the patent RU 2279725 C1, G21F 5/008, 2006. The known device for damping shocks contains plastically deformable rod element connected to the supporting sheet elements mounted respectively on the protected (case of spent fuel cell assemblies) and protective (metal and concrete containers for transporting and/or storage of spent fuel cell assemblies) objects. Plastically deformable core element is passed through a through hole in the support sheet items. Reference sheet items connected with a securable object, and reference sheet items connected with a protective object, the height of the body cavity of the metal and concrete containers (essentially along the length mentioned plastically deformable beam element) is installed through one. In the embodiment, plastically deformable beam elements placed evenly around the circumference around the longitudinal axis of the protected object. In case of accidental fall of the metal and concrete containers (IBC) on the side surface of the housing of the damping stroke and reducing overload acting on the case of spent fuel assemblies is due to the bending plastically deformable rod elements, the scheme bearing each of which in this case is similar to the circuit supporting multi-span beams with transverse loads between supports. Bending plastically deformable beam element occurs when the transverse displacement of the respective support plate element fixed to the protected object (the case), relative to the anchor plate element fixed to the inner wall of the body of the IBC. The deformation mentioned core elements, followed by the formation of plastic hinges in the knots of their mates with a support sheet elements, provides the necessary dempfirovany the transverse shock loads, transmitted in case the spacer bars), and provides a reduction of operating in case of congestion to an acceptable level.

In the known device the energy absorption occurs due to plastic deformation of the cylindrical rod under the curve (type multi-span beams). However, the power characteristic of the known device is characterized by a sharp increase in the efforts of the resistance to deformation in large deflections compared with the initial load corresponding to the yield stress of the material, characteristic of small displacements (deformations). The dramatic increase in the efforts of the resistance to deformation caused by the fact that along with the bending moment corresponding to the plastic deformation of the rod ("time creep"), the resistance movement has a stretching rod and emerging it "chain" efforts (similar to the force arising from the stretching of the thread or chain, located between the two supports and subjected to a transverse load). A similar increase in the efforts of the resistance to deformation may be desirable to protect (depreciable) of the object, resulting from a significant excess of this effort tolerance to load.

The problem solved by the invention is to create a fairly simple universal device is TBA for damping shocks, where the absorption of the impact energy through plastic deformation in bending of the truss element would provide power optimization features.

This problem is solved due to the fact that the device for damping shocks, containing plastically deformable rod element connected to the support elements mounted respectively on protected and protective objects, and plastically deformable core element passed through holes in the support elements and the supporting elements connected to the protected object, and the supporting elements connected to a protective object, the length of plastically deformable beam element are in one, according to the invention plastically deformable core element made in the form of articulated links which are interconnected with the possibility of relative movement of adjacent links along the Central axis of the plastically deformable the core element upon impact (i.e. when the effects of overloads). Thus the neighboring support elements are located at the same distance from one another.

Together with this, the junction of adjacent links of the plastically deformable beam element equidistant from the respective adjacent supporting elements.

In addition, links of plastically deformable what constituent of the truss element is connected by the tightening element, which passed through the center hole, made respectively in each link plastically deformable beam element and secured to the ends of the latter.

The outer diameter of the tightening element can be equal to the inner diameter of the center hole plastically deformable core element.

In the latter case the elastic element can be made in the form of a rod with ring tabs that are located in areas where the joints of the links plastically deformable rod element and said supporting elements last, with ring tabs that are located in areas where the supporting elements are designed so that the length forming an annular protrusion is less than the thickness of the support element.

In an embodiment, the adjacent links of the plastically deformable beam element can be interconnected with the one of the adjacent links of the plastically deformable core element of the cylindrical protrusion included in the return slot on the other element plastically deformable core element.

In another embodiment, the device includes a longitudinal beam elements, the longitudinal axis of each of which is geometrically aligned with the longitudinal axis of the plastic deformation or the alignment of the truss element. Besides, the neighboring links of the latter are connected through the respective longitudinal rod element, which is placed in facing each other nests made on adjacent links of the plastically deformable beam element, and made of a material with strength, greater strength of the material plastically deformable core element.

In the last two considered versions of the neighboring links of the plastically deformable beam element can be fastened by spot welding.

In the penultimate of the above embodiments, in each of the longitudinal truss member can be made a Central opening through which omitted the corresponding pin, which is inserted in the holes of the adjacent links of the plastically deformable core element.

In an embodiment, the links plastically deformable rod element is connected by the tightening element, which passed through the center hole, made respectively in each of the longitudinal truss member and every link plastically deformable beam element and secured to the ends of the latter.

The elastic element may be in the form of a rod provided with means for engagement with an outer links PLA is almost deformable core element.

The technical result of the use of the invention is that it allows you to increase the shock resistant properties of the device for damping shocks.

1 schematically shows a device for damping shocks, General view, a longitudinal section; figure 2 - mounting the tightening element in the extreme link plastically deformable beam element, the element a in figure 1; figure 3 is the same, the element B in figure 1; figure 4 - connection of neighboring (related) links plastically deformable core member through the longitudinal truss element using the tightening rod, the element In figure 1; figure 5 - connection of neighboring (related) links plastically deformable core member through the longitudinal rod member, and a pin; figure 6 - connection of neighboring (adjacent) links plastically deformable beam element by means of a stud that is included in a cylindrical socket; figure 7 - connection of neighboring (related) links plastically deformable core member by tightening element with annular projections; Fig - metal and concrete containers for transporting and/or storage of spent assemblies fuel rod with a device for damping shocks, longitudinal section; figure 9 - fastening device for damping shocks on protected and protective objects, poperechnyy section G-G Fig.

In the embodiment of the invention the device for damping shocks, for example, in metal and concrete containers with spent nuclear fuel (SNF). Metal and concrete container includes a housing 1 with a bottom 2, a protective sealing cover 3-5, located one above the other on a common base (not shown)and inserted into cavity "a" of the housing 1 case (spacer bars) 6 with cells for installation of the canisters 7 of spent fuel elements. The case inside the case is installed with a clearance relative to the inner wall of the casing. Between the inner wall of the housing and cover evenly spaced around the circumference around the longitudinal axis of the cover installed device 8 for damping shocks. The gap between the cover and the inner wall of the housing is determined by the amount of movement of the cover relative to the housing, which is necessary to reduce (damping) acting on the body of the overloads to the permissible values for SNF (or canisters with SNF) in the event of a possible emergency loading metal and concrete containers. Each device 8 for damping shock contains plastically deformable core element 9, which is connected with reference, for example, sheet elements 10 and 11, mounted respectively on the cover (protected object) 6 and on the housing (protective lens is f) 1. In the embodiment of the invention, the fixed elements 10, for example, by welding, and the elements 11 with threaded connections. Plastically deformable core element 9 is passed through the corresponding holes made in the support sheet items 10 and 11. Reference sheet items 10 and 11 installed through one at a given spacing along the length of the plastically deformable rod element 9 (essentially the height of the container and parallel to the bottom of the case 1. In the embodiment of the invention, the specified distance is assigned (determined) the solution of the dynamic problem of deformation of the rod elements 9, the bearing of each of which in case of accidental fall of the metal and concrete containers on the side surface of the housing 1 is similar to the scheme bearing multispan (multisupport) beams with transverse loads between supports, the optimization of the distance between the supports (reference sheet items 10 and 11)associated with plastically deformable core element 9, and optimization of the diameters of the rod elements 9 to ensure reduction of the active on the case (the spacer grid) 6 congestion to an acceptable level. Thus, in this case, the specified distance is the distance that corresponds to the optimal distance between the supports (reference sheet items 10 and 11) multi-span beams (i.e. plastically deformable rod element 9), the numerical value of which provides the necessary damping of the shock transverse loads, which are transmitted on the case (the spacer bars), and reducing operating in case of congestion to an acceptable level. Plastically deformable rod element 9 made in the form of articulated links 12 and 13. At the same time the reference sheet elements 10, 11 are located at the same distance from one another, and the junction of adjacent links of the plastically deformable rod element 9 equidistant from the respective adjacent supporting plate element 10, 11. This embodiment ensures the equality of the values of bending moments arising in the links of the core element 9, and loads (reactions) in almost all the supporting elements of the device (except at the anchor plate element, the load which is approximately two times lower). Equality bending deformations in all cross sections curving links located at equal distances from the supports, the maximum allowable value which is determined by the physical properties of the material plastically deformable beam element, allows to optimize the device for damping shocks and minimize its weight.

The articulated links of the plastically deformarea the CSO core element 9 are connected with the possibility of relative displacement (movement) of connected neighboring (related) links along the Central axis of the plastically deformable beam element at impact (i.e. when the effects of overloads). In the embodiment of the invention neighboring (related) links plastically deformable rod element 9 are connected through the respective longitudinal beam elements 14, the longitudinal axis of each of which is geometrically aligned with the longitudinal axis 15 of plastically deformable rod element 9. Each longitudinal rod element 14 is placed in facing each other nests "b", performed on adjacent links of the plastically deformable rod element 9. Longitudinal core element 14 is made of a material with strength, greater strength of the material plastically deformable rod element 9. The links 12, 13 plastically deformable core element 9 is connected by means of the tightening element 16, which is passed through the center hole, made respectively in each of the longitudinal truss member 14 and each of the links 12, 13 plastically deformable core element 9 and attached to the ends of the latter. In the embodiment, the elastic element 16 in the form of rod (thin metal rod), provided with means for engagement with an outer links plastically deformable rod element 9. In the embodiment of the invention the means for engagement performed,for example, in the form of nuts 17, 18, interacting with the respective free ends of the extreme links of the plastically deformable rod element 9. For the convenience of handling plastically deformable core element 9, for example, when it is installed in a regular place nut 18 provided with a lifting element 19.

In the case of connecting the adjacent links by means of a longitudinal rod elements 14 in another embodiment, the neighboring (related) links plastically deformable beam element can be rigidly fastened ("stuck") by means of spot welding.

In another embodiment, the neighboring (related) links plastically deformable rod element 9 can be connected (bonded) by means of studs 20, passed through the Central hole of the longitudinal core element 14 and installed in the corresponding threaded holes formed in the adjacent links of the plastically deformable rod element 9.

Possible implementation, when the neighboring (related) links plastically deformable rod element 9 are connected with the one of the adjacent links of the plastically deformable core element of the cylindrical projection (tenon) "C"included in the response slot "d" on another link plastically deformable CTE is newago element 9. In this embodiment, the adjacent links of the plastically deformable beam element rigidly fastened ("stuck") by means of spot welding.

In another embodiment, the links of the plastically deformable core element 9 is connected by means of the tightening element 16, which is passed through the center hole, made respectively in each link plastically deformable core element 9, and attached to the ends of the latter. In the embodiment, the outer diameter of the tightening element is equal to the inner diameter of the center hole plastically deformable rod element 9. In the embodiment, the elastic element 16 in the form of rod (thin metal rod), provided with means for engagement with an outer links plastically deformable rod element 9. In another embodiment, the tightening element 16 in the form of a rod with annular projections "e" and "f"are located at locations respectively joints of the links plastically deformable core element 9 and the supporting plate element 10, 11. When this annular projections "f", located in the locations of the anchor plate element 10, 11, designed in such a way that the length forming an annular protrusion is less than the thickness of the supporting Lis is a new element. In the above embodiments, execution, when the tightening element 16 in the form of a stick or rod with annular projections mentioned means for engagement can be performed, for example, in the form of nuts 17, 18, interacting with the respective free ends of the extreme links of the plastically deformable rod element 9. For the convenience of handling plastically deformable core element 9, for example, when it is installed in position the nut 18 may be provided with a lifting element 19.

Device for damping shocks works as follows.

In the embodiment of the invention plastically deformable core element 9 is assembled from separate parts 12, 13, which are connected through the longitudinal beam elements 14 with the tightening element 16, which is suitably sequentially passed through the center hole, made respectively in the longitudinal beam elements 14 and each of the links 12, 13. At the ends of the tightening element 16 install and tighten the nuts 17, 18 and thus form consisting of articulated links 12, 13 plastically deformable rod element 9. Each of the collected thus plastically deformable rod elements 9 is passed, for example, to lock in the bottom 2 korpusas through a corresponding number of aligned spaced holes (eyelets) in the support sheet items 10 and 11, pre suitably mounted on the cover 6 and the housing 1. Thus, between the inner wall of the housing and covering the circumference around the longitudinal axis of the cover form a system consisting of separate devices 8 for damping shock.

Under the effect of shock loads applied to the protective object, the last reported acceleration and overload, defined by a number of factors (for example, when falling metal and concrete containers in its housing (i.e. protective), reported acceleration braking overload exceeding permissible for a SNF located in the spacer grid (i.e. in the protected object). Thus there is relative movement protective and protected objects in the direction of the action of external loads. When the relative movement of these objects is the bending of the links plastically deformable rod elements 9, preventing relative movement of the protective and protecting objects with a force that depends on the geometrical and physical parameters of the device. The values of these parameters provide the amount of effort (reactions in the support elements)corresponding to the overload securable within permissible for him values and, thus, the necessary reduction of existing protected on the target overload compared with overloads, acting on the protective object.

In case of accidental fall of the metal and concrete containers (IBC) on the side surface of the housing of the damping stroke and reducing overload acting on the case of spent fuel assemblies is due to the bending plastically deformable rod elements 9, the bearing of each of which in this case is similar to the circuit supporting multi-span beams with transverse loads between supports. Bending plastically deformable rod element 9 occurs when the transverse displacement of the respective support plate element 10 mounted on the protected object (the case), relative to the anchor plate element 11 mounted on the inner wall of the housing 1 MBq. With increasing offset value of the protected object (the case of spent fuel assemblies) relative to the inner wall of the casing MBq increases the bending of the links 12, 13 plastically deformable rod element 9. By providing opportunities relative displacement of neighboring (related) links connecting the ends of the latter with increasing bending of the links apart (move along the Central axis of the core element 9), while tensile forces associated with increased length of plastically formiruemogo core element 9, virtually absent. Thus, the decreasing of the efforts of the resistance to deformation. In the power characteristics of the device approaches the ideal force of resistance to deformation with providing close to a constant value overload protected object.

Deformation of rod elements 9, followed by the formation of plastic hinges in the knots of their mates with a support sheet items, respectively 10 and 11, provides the necessary damping of the shock transverse loads, which are transmitted on the case (the spacer bars) reduces operating in case of congestion to an acceptable level.

Thus, due to the performance characteristics of the device for damping shocks the invention allows to create a simple universal device, in which the absorption of the impact energy through plastic deformation in bending of the truss element is ensured optimization of power characteristics, which improves shock resistant properties.

1. Device for damping shocks, containing plastically deformable rod element connected to the support elements mounted respectively on protected and protective objects, and plastically deformable rod e is ment passed through holes in the support elements, and the supporting elements connected to the protected object, and the supporting elements connected to a protective object, the length of plastically deformable beam element are in one, characterized in that the plastically deformable core element made in the form of articulated links which are interconnected with the possibility of relative movement of adjacent links along the Central axis of the plastically deformable core element upon impact, while the adjacent supporting elements are located at the same distance from one another.

2. The device according to claim 1, characterized in that the junction of adjacent links of the plastically deformable beam element equidistant from the respective adjacent supporting elements.

3. The device according to claim 1, characterized in that the links plastically deformable rod element is connected by the tightening element, which passed through the center hole, made respectively in each link plastically deformable beam element and secured to the ends of the latter.

4. The device according to claim 3, characterized in that the outer diameter of the tightening element is equal to the inner diameter of the center hole plastically deformable core element.

5. The device according to claim 4, characterized in that the banner is covering element made in the form of a rod with annular projections, located in the locations of the joints of the links plastically deformable rod element and said supporting elements last, with ring tabs that are located in areas where the supporting elements are designed so that the length forming an annular protrusion is less than the thickness of the support element.

6. The device according to claim 1, characterized in that adjacent links of the plastically deformable beam element interconnected with the one of the adjacent links of the plastically deformable core element of the cylindrical protrusion included in the return slot on the other element plastically deformable core element.

7. The device according to claim 1, characterized in that it comprises a longitudinal beam elements, the longitudinal axis of each of which is geometrically aligned with the longitudinal axis of the plastically deformable core member, the adjacent links of the latter are connected through the respective longitudinal rod element, which is placed in facing each other nests made on adjacent links of the plastically deformable beam element, and made of a material with strength, greater strength of the material plastically deformable core element.

8. The device according to claim 6 or 7, the tives such as those that the adjacent links are rigidly fastened together by means of spot welding.

9. The device according to claim 7, characterized in that each longitudinal truss member is made of a Central hole through which omitted the corresponding pin, which is inserted in the holes of the adjacent links of the plastically deformable core element.

10. The device according to claim 7, characterized in that the links plastically deformable rod element is connected by the tightening element, which passed through the center hole, made respectively in each of the longitudinal truss member and every link plastically deformable beam element and secured to the ends of the latter.

11. The device according to claim 3 or 10, characterized in that the elastic element is made in the form of a rod provided with means for engagement with an outer links plastically deformable core element.



 

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3 cl, 9 dwg

FIELD: transport engineering; car protective devices.

SUBSTANCE: invention relates to devices aimed at protection of cars in case of collisions and it can be used to protect side surfaces of cars, microbuses and other vehicles together with front and rear bumpers. Proposed buffer contains two protective sections arranged at one level with bumpers, each being connected to car body load-carrying members and provided with support surface in form of U-shaped section, and energy-absorbing devices connected to U-shaped section being uniformly arranged over its length at a distance from each other. Each energy-absorbing device includes definite number of adjoining energy-absorbing members, each being mirror reflection of adjacent one, made integral from cut of round metal rod and includes base, jumper and brace located in relatively perpendicular planes. Bases of energy-absorbing members are connected to outer surface of U-shaped section. Jumpers of energy-absorbing members are arranged coaxially and they interact with outer surface of section. Bases and braces of energy-absorbing members are arranged horizontally, and jumpers, vertically. Each energy-absorbing device is furnished with movable base plate made integral with leaf spring. Braces of all energy-absorbing devices of buffer sections are tilted at preset angle, respectively, in direction from front to rear bumper. Each section of buffer includes also foamed shock-absorbing material units placed in spaces between adjacent energy-absorbing devices, and outer sheath connected to bent off parts of U-shaped section and it can be additionally provided with safety strip connected to its outer surface. Invention provides protection of car body side surface at collision with obstacle to other car. It provides high energy-absorbing capacity and stability of shock-absorbing characteristics of car.

EFFECT: improved protection of cars.

3 cl, 7 dwg

Damper // 2245469

FIELD: mechanical engineering.

SUBSTANCE: damper comprises flexible members and bearing plates assembled in a structure with interference. The flexible members are made of a system of flexible half-rings and flexible damper interposed between the bearing plates and clamped with at least one guiding column and threaded joint, which allows the value of interference and rigidity of the damper to be adjusted. The ends of the flexible half-rings abut against the bearing plates. The cylindrical surface of the half-rings faces toward the interior of the damper and abut against the flexible damper.

EFFECT: enhanced damping capabilities.

13 cl, 7 dwg

FIELD: rail vehicles and different industries.

SUBSTANCE: proposed device contains energy absorbing part, movable and stationary support plates. Energy absorbing part can be made up of metal plate members, thickness from 2 to 10 mm, extreme ones being secured on support plates with flat section and camber section and forming cellular structure in section consisting of great number of hexahedrons in section by planes passing through vector of external resultant force with provision of impact energy absorbing owing to flexural strains in metal plate members mainly on chamber sections. Energy absorbing part can contain great number of cells, each formed by two flat metal plates, thickness from 2 to 10 mm, arranged square to external force vector, and two metal plates, thickness from 2 to 10 mm, placed in between, with initial camber in direction square to vector of external force and thrusting against middle of flat metal plates of adjacent cells. Extreme metal plates are secured to support plates with provision of absorption of impact energy owing to flexible strains of metal plates in places of maximum camber and flexural strains of flat metal plates in places of butt-joining of metal plates. Energy absorbing part can be made in form of cellular structure consisting of great number of rectangles made up of metal plate members, thickness from 2 to 10 mm, extreme ones being secured on support plates. Some metal plate members coincide with direction of external force and thrust against middle of metal plate members of adjacent cells arranged square to vector of external force with provision of impact energy absorbing owing to flexural strains in units of intersection of metal plate members. Device provides absorption of impact energy of the order of 0.5-2.5 MJ.

EFFECT: provision of effective absorption if impact energy at relatively uniform overloads to which passengers are subjected.

4 cl, 3 dwg

Ring damper // 2259504

FIELD: mechanical engineering.

SUBSTANCE: ring damper comprises flexible cylindrical rings secured to the housing. The housing is made of panel whose face grooves receive cylindrical rings fitted with interference so that the projecting parts of the flexible cylindrical rings from both sides of the panel define flexible bearing arcs of the damper which are in a contact with the surfaces of the object to be damped and bearing surfaces of the vehicle or construction structure, or foundation. The heights of the flexible bearing arcs are controlled by means of flexible semirings that are set with interference in the space between the flexible bearing arcs of the flexible cylindrical rings and panel surfaces. The peripheral planks secured to the panel prevent the flexible cylindrical rings and flexible semirings against falling out of the face grooves.

EFFECT: improved and simplified structure and expanded functional capabilities.

15 cl, 12 dwg

FIELD: transport engineering; trucks.

SUBSTANCE: proposed energy-absorbing buffer of truck relates to collision protective means of vehicles and it can be used in front and rear bumpers of trucks, buses and other vehicles of different types. Buffer connected to front of rear bumper is arranged lower than bumper and includes energy-absorbing devices united into sections arranged at a distance from each other. Energy-absorbing devices in each section are butt-joined and connected to each other. Each energy absorbing device consists of two energy-absorbing members, being mirror-like relative to each other, made integral of tubular blank cut and including bases, bridges and main and additional struts located in relatively perpendicular planes. Bases of energy-absorbing members are connected to outer surface of bumper, bridges of energy-absorbing members are arranged coaxially relative to each other, some engaging with outer surface of bumper, and others, with support plate. Each energy-absorbing device is furnished with leaf-springs and members made of elastic material arranged around additional struts which are united in each section by C-shaped section. Invention prevents getting of passenger car under truck frame, thus providing passive safety. It is reusable device featuring high energy-absorbing properties and stability of shock-absorbing characteristics which can be set within wide ranges. It has simple design and reduced aerodynamic drag which provides economy of fuel.

EFFECT: improved safety, reduced aerodynamic drag and fuel consumption.

3 cl, 7 dwg

FIELD: mechanical engineering; seismic protection.

SUBSTANCE: proposed device contains deformable plastic member. Said member is made in form of frame made of channel elements connected, with flanges outwards, with formation of upper and lower support planes furnished with fastening units arranged on opposite sides of each plane. Fastening units are provided with cone-like elements, for instance, cone-like washers adjoining support plane and orientated towards each other by narrow part.

Fastening units of one support plane are displaced relative to fastening units of other plane through 90°.

EFFECT: protection of equipment from seismic shocks of 15-20 g and higher in any direction.

2 dwg

FIELD: transport engineering; automobile protection means.

SUBSTANCE: proposed bumper connected to load-bearing structure of automobile includes two sections arranged at a distance from each other and energy-absorbing device adjoining each other. Each energy-absorbing device consists of two interconnected energy-absorbing members, each being mirror image of the other and made as integral part from cut of round metal bar including base, additional base, near, additional and far bridges interconnected by main and additional braces and located in relatively perpendicular planes. Bases of energy-absorbing members are arranged vertically and connected to support surface, bridges of energy-absorbing members are arranged horizontally coaxially relative to each other, main and additional braces of energy-absorbing members of each section are arranged lower than support surface being inter connected by rigid plates. Each section of bumper is provided with guard made up of interconnected vertical and horizontal tubular members connected to additional bases of energy-absorbing devices and shock-absorbing devices connected to tubular members of guard and load-bearing structure of automobile and made integral of two leaf springs. Bumper includes outer sheathing with thinning sections to provide order destruction in preset places and elastic resilient members in form of cylinders connected to tubular members of guard.

EFFECT: simplified design, provision of high energy-absorbing properties and stability of shock absorbing, possibility of repeated use of structure.

3 cl; 6 dwg

FIELD: mechanical engineering.

SUBSTANCE: shock-absorbing device comprises housing made of a closed chamber filled with deformable members. The deformable members are made of hollow unclosed members whose strength is less or equal to that of the housing and glass hollow microscopic spheres. The inner spaces of the closed chamber and hollow members are filler with the glass hollow microscopic spheres.

EFFECT: enhanced efficiency.

1 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to collision protective devices and it can be used as front and rear bumpers of different passenger cars, minibuses and other vehicles. proposed buffer to be connected to bearing structure of car has common outer sheathing and central and side sections whose support surfaces are connected to each other through connecting energy-absorbing devices with leaf springs. Main energy-absorbing devices are connected to support surfaces of sections being uniformly spaced and including definite number of interconnected absorbing mirror-like members. Each energy-absorbing member is made integral from section of round metal bar and provided with base, bridge and brace arranged in relatively perpendicular planes. Braces of main energy-absorbing devices are arranged horizontally, being connected to plates of movable bases made integral with leaf springs. Braces of main energy-absorbing devices of left-hand and right-hand parts of buffer are pointed to different sides, respectively, in directions from middle to edges of buffer. Buffer is furnished additionally with energy-absorbing devices made in similar manner, connected to bearing structure of car and interacting through braces with rear surface of corresponding side section of buffer.

EFFECT: high energy absorbing capacity and stability of shock absorbing characteristics with possibility of repeated use.

3 cl, 8 dwg

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