Suspension and spiral compression spring for suspension

FIELD: machine building.

SUBSTANCE: group of inventions relates to suspension by swinging arms. Suspension by swinging arms (11) with comprises lever element (20), spring lower seat (22), spring upper seat (23) and spiral compression spring (21), which is located between spring lower seat (22) and spring upper seat (23) and in compressed state presses lever element (20) down. Spiral spring (21) wire (40) comprises part (40a) of large diameter wire, which is located on side near turning axis (31) and has diameter (d1) of wire, which is more, than wire (40) average diameter.

EFFECT: enabling possibility of spiral compression spring uniform tension distribution.

4 cl, 6 dwg



Same patents:

Bearing assy // 2526305

FIELD: machine building.

SUBSTANCE: invention refers to a bearing assy used as a support for a tubular element, in particular, to a lower bearing of the sliding tube of shock-absorber strut of the aircraft landing gear. Bearing (2') assy comprises body (3') supporting the first and the second annular supporting portions with the supporting surfaces, which contact with inner tubular element (1') in the areas distanced from each other in the axial direction. The annular supporting portions are represented either by separate supporting rings (4") installed in body element (3') with the supporting surfaces of different diameters, or by one supporting ring (4"), which can bend in the radial direction and is supported in such a way that the second annular supporting part can bend under effect of a load in the radial direction, while its supporting surface will occupy a position with a diameter bigger than the diameter of the supporting surface of the first annular supporting part (4"). Supporting ring (4") is installed in body (3') in seat (5") with shaped base (7") or conical base (9").

EFFECT: removal of a pinpoint contact between a tubular element and a supporting ring reducing wear and pressure.

13 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: group of inventions relates to machine building. A flexible bush comprises a flexible wall, a ring reinforcing element completely embedded in the flexible wall near an open end, and a holding element. The holding element is installed so that its surface is open along the flexible wall. The outer dimension of the holding element is more than the inner dimension of the ring reinforcing element. A gas spring unit comprises the second end element shifted longitudinally from the first end element. The second end element comprises an end face wall, a side wall and a holding protrusion. The flexible bush is attached between the first and the second end elements. The open end of the flexible bush is inserted along the side wall of the second end element. An assembly method includes the following operations. Installation of the holding element along the open end of the flexible wall. Installation of the flexible wall open end and holding element near the holding protrusion of the end element. Forced movement of the flexible wall open end and holding element along the holding protrusion.

EFFECT: improved reliability of unit performance in tension mode.

17 cl, 33 dwg

FIELD: machine building.

SUBSTANCE: detection device includes hollow housing (11), in which piston (14) is tightly installed and provided with possibility of being moved with sliding. The piston receives pressure in the chamber through inlet (12) of the housing interconnected with that chamber. The piston is retained in the position of pressure overcoming by means of retention device (21). The latter has the possibility of releasing the piston when the specified pressure threshold is achieved or exceeded. The piston is moved in forced manner under action of pressure to indication position. The piston is rigidly attached to pin (27) projecting out of the housing inlet. The pin has the possibility of forced movement with force overcoming of the retention device.

EFFECT: activation of the device both in case of overpressure and collision.

5 cl, 3 dwg

FIELD: transport.

SUBSTANCE: proposed bearing 1 has top housing 3 made from synthetic resin with seat surface 10 for mount device 9 arranged on car body side and annular bottom surface 2, bottom housing 5 made from synthetic resin and annular thrust plain element 6 from synthetic resin. Annular top surface 4 is made integral with bottom housing 5 opposite surface 2, and seat surface 25 of suspended cylindrical spiral spring 7. Said housing is fitted on top housing 3 to rotate about axis O of housing 3 in direction Z. Thrust plain element 6 is arranged in annular clearance between surface 2 and surface 4 and features annular thrust surface sliding to thrust against surface 2 or surface 4. Mount surface 10, working surface and part of surface 25 where against thrusts spring 7 are fitted on bearing axle 1.

EFFECT: efficient bearing to reduce load from car body.

8 cl, 11 dwg

Hydraulic damper // 2413887

FIELD: machine building.

SUBSTANCE: inside cylinder tube and hydraulic damper there are arranged inter-communicating piston cavity and controlled cavity. Both cavities are filled with oil in a pressurised state. Additionally, there is installed a piston travelling in axial direction in the piston cavity and a rod connected to the piston. A flexible element is installed in the control cavity in a position forming a reservoir in the control cavity by means of compression of oil with pressurising force; impact effect is damped so, that the flexible element is forced to elongate and contract when oil flows in/out of the reservoir due to travels of the rod.

EFFECT: simplicity and reduced dimension of design of hydraulic damper, retaining constant amount of oil in piston cavity.

10 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: invention relates to bearing structure of damper in hydraulic actuator. Structure for fixation of damper (72a, 72b) is located in hydraulic actuator. Coats (14, 16) are installed on of the cylinder (12) casing. Piston (18,) is installed inside the cylinder (12) casing. Damper groove (70a, 70b) contains the first and the second grooves. The first groove (74) is open from the side of end surface. The second groove (76) is located adjoining to the first groove (74) and expands relative to it. According to the first version damper groove (70a, 70b) is formed on the end surface of piston (18) perpendicularly to its axis and is directed to covers (14, 16). According to the second version damper groove is formed on the end surface of cover (14, 16) perpendicularly to its axis and is directed to piston (18). Damper (72a, 72b) contains basic element (80) and expanding relative to its guideline element (82).

EFFECT: creation of structure providing easy and reliably install damper on piston or covers.

7 cl, 17 dwg

FIELD: machine building.

SUBSTANCE: invention relates to plain bearing for suspension strut of four-wheel vehicle. Proposed bearing comprises upper collar (3) made in synthetic rubber and furnished with circular lower surface (2), lower collar (5) made in reinforced-synthetic rubber and applied on the said upper collar to revolve about its axis. The said lower collar has also circular upper surface (4) arranged opposite surface (2), and circular thrust part (6) made in synthetic rubber and arranged between surfaces (2) and (4). Lower collar (5) has surface (36) making a seat of cylindrical spring (61) and arranged on lower surface (25). Lower collar (5) comprises circular thrust section (12), upper cylindrical section (24), formed entirely on upper surface (23) of section (12). Surface (4) and lower cylindrical section (26) are formed on lower collar (5). The lower cylindrical section (26) is formed entirely on surface (25) of circular thrust section (22). Note here that surface (25) of section (22) arranged on radially outer surface (26) makes surface (36) of the seat of spring (61). Note also that sections (12), (24) and (26) comprise multiple tapered chambers.

EFFECT: reduced vehicle suspension weight and running gear cost.

13 cl, 6 dwg

Hydrogasifier // 2071574

FIELD: machine building.

SUBSTANCE: spring is made as cylindrical screw spring and contains two parts with opposite looking ends. First part of the spring has turns with rectangular cross-section with rounded edges, and second part is made hollow. Opposite looking end of the first part is located in cavity of the second part. Clearances of segment profile of the spring contact parts are filled with antifriction grease. At end of the second part of the spring a sealing cup is installed to prevent grease leaks. The first part of the spring is enclosed by the pipe put of the dampening material, for example, polyurethane.

EFFECT: increased efficiency of vibration isolation in resonance mode.

1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for producing springs by hot winding. Proposed method consists in using mandrel with outer surface layer made of metal that features lower heat conductance. This allows making the spring coil in tempering with metal martensite structure owing to eliminated heat removal from spring coil inner surface in contact with mandrel outer surface layer.

EFFECT: higher quality of springs.

2 cl, 2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for making high-loaded helical springs subjected to both axial and radial forces. Proposed method comprises spring coiling, thermal treatment, preparing thrust coils, cold upsetting, and shot-blast cold-hardening of spring outer surface section. Length of said section makes one fourth of spring turn circumference to half the circumference. Preset spring outer surface section is subjected to ordered shot-blast cold-hardening.

EFFECT: higher fatigue resistance, quality and strength.

4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used in devices intended for increasing spring capacity and working performances. Proposed device comprises barrel to receive inserts and spring to be tested arranged there between. Barrel ID varies from compressed spring diameter to that of coiled spring. Punch with ball surface stays in contact with ball surface of top insert attached to said punch by screw with washer to rotate and displace relative to barrel axis and allow its axis to deflect from punch axis. Spline grooves are made on punch screw and top insert central bore to arrange spring-loaded alternating friction discs jointed by splines with punch screw spline grooves and top insert spline grooves. Insert end faces are provided with surfaces with thrust that features depth making, at least spring coil height to follow profile of the spring extreme coil end faces. Overrunning coupling with screw surface is fitted inside bottom insert to interact with screw surface of the rod coupled with press bottom cylinder ejector. Rod cylindrical section has alpines or spline groove to interact with mate splines or keys of the device bottom plate.

EFFECT: possibility of use in quantity production, ruled out hand work.

2 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building, particularly, to device for spring hardening by aging in compressed condition. Proposed device comprises top and bottom inserts, barrel to accommodate said inserts and punch with ball surface to get in contact with top insert ball surface. Bottom insert is arranged to rotate about barrel axis while top insert rotates and displaces along barrel axis and allows its axis to deviate from punch axis. Insert end face surfaces have stop with depth making at least spring turn height and follow spring extreme turn end shape. Insert stop edge is rounded at point of contact with spring first work turn to rule out dents on first turns.

EFFECT: longer life of springs.

2 dwg

FIELD: machine building.

SUBSTANCE: device includes upper and intermediate plates, punch holder attached to them and punch with lead-in and working parts. On punch there arranged is movable spring-loaded guide bushing to remove the forced spring from it. On lower plate there arranged is shell with annular insert for installation of the spring to be forced. Shell bore diametre is equal to outer diametre of compressed spring. Value of annular gap between shell bore and working part of the punch entering the spring is smaller than diametre of coil of the spring to be forced. On the punch after the working part there is stepped edge for transfer of axial force from the press through mating edge of guide bushing to the spring to be forced.

EFFECT: increasing contact and cyclic strength of springs per one stroke.

3 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: facility consists of cartridge, wherein insertions and tested between insertions spring are installed, and of puncheon. The puncheon is made with ball surface contacting ball surface of an upper insertion. The upper insertion rotates relative to axis of the cartridge, travels along axis of the cartridge and deviates with its axis from the axis of the puncheon. The upper insertion is attached to the puncheon by means of a screw with a washer. The lower insertion is rigidly joined with the immobile cartridge.

EFFECT: simplification of design and reduced number of structure components.

3 cl, 1 dwg

The invention relates to the field of engineering, namely, torsional vibration dampers and coil pressure springs, primeneniyu in torsional vibration dampers

The invention relates to mechanical engineering and can be used in any area where you want the spring high rigidity, and especially a small difference between the outer and inner diameters, i.e

FIELD: transport.

SUBSTANCE: set of inventions relates to automotive industry. The rear axle includes wheel suspension on trailing arms connected by cross member. Two rigid trailing arms for steering knuckles mounting by means of bearing bushing are pivotally connected with vehicle body. The trailing arms are interconnected y means of rigid in bending but resilient in torsion cross member and by means of articulated arms. Centre axes of bearing bushings are parallel to vertical direction (z) of vehicle. Vehicle contains the mentioned rear axle with wheel suspension on trailing arms.

EFFECT: improved vehicle turnability.

10 cl, 1 dwg

Axle support // 2404070

FIELD: transport.

SUBSTANCE: invention relates to axle support, assembly unit for mounting suspension component to asymmetrical axle and suspension system for cradling vehicle chassis. Axle support includes compression plate installed in parallel to tension plate. Each of the plates has upper and lower portions having near-by and remote edges. The axle support has projections which extend from side plates. At least one of the projections has curved or rounded corner. The inner plate has a groove to which suspension component is attached. The assembly unit includes the first and the second supports mounted at opposite sides of centre line on asymmetrical axle including differential housing. The suspension system includes laterally spaced and longitudinally directed first and second frame beams and an X-member mounted between them, as well as multifunctional (e.g. box-type) component.

EFFECT: creation of supports being able to bear loads acting in different directions.

20 cl, 17 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry. Suspension comprises torsion beam representing hollow tube with bent ends that make levers. Lever open ends receive wheel attachments and welded thereto. Said wheel attachments comprise plate with central holes intended for attachment of wheel cam. Plate central hole serves to accommodate wheel drive shaft. Beam is attached to vehicle body with help of body attachments welded to tube bends zone.

EFFECT: higher precision of producing torsion beam.

7 cl, 9 dwg