Plain bearing from synthetic resin

FIELD: machine building.

SUBSTANCE: thrust plain bearing (1) comprises an upper casing (2), a lower casing (3) from synthetic resin overlapped onto the upper casing (2) and able of rotation around the axis (O) along the circle (R) in respect to the upper casing (2), a unit (5) of the plain bearing from synthetic resin placed in the annular space (4) between the upper casing (2) and the lower casing (3), and a sealing element (8) from synthetic resin to seal the respective opposite protruding-to-outside ends of the gap (6) on the internal periphery side and of the gap (7) on the external periphery side in the radial direction (X) between the upper casing (2) and the lower casing (3). Therewith one annular end of the gap (6) and the gap (7) respectively is communicated with the annular space (4).

EFFECT: development of a plain bearing from synthetic resin able to prevent entering of dust onto sliding surfaces without sliding characteristics being deteriorated, resulting in reduced time for assembly and prevention of disconnection caused by vibration, thus durability and sealability are improved and steering smoothness is provided.

8 cl, 37 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: invention relates to a plain thrust bearing from synthetic resin, namely, to a plain thrust bearing used in post-type suspensions (McPherson suspension) for four-wheeled vehicle as a plain thrust bearing. The thrust plain bearing (1) comprises an upper casing (2) from synthetic resin, a lower casing (3) from synthetic resin overlapped onto the upper casing (2) and able of rotation around the axis (O) along the circle (R) in respect to the upper casing (2), a unit (5) of the thrust plain bearing from synthetic resin placed in the annular space (4) between the upper casing (2) and the lower casing (3), and a sealing element (8) from synthetic resin to seal the respective opposite protruding-to-outside ends of the gap (6) on the internal periphery side and of the gap (7) on the external periphery side in the radial direction (A) between the upper casing (2) and the lower casing (3), therewith one end with the hole of the gap (6) and the gap (7) respectively is communicated with the annular space (4).

EFFECT: design of a thrust plain bearing with more efficient assembly and replaceability, providing for additional rise of durability and sealability.

4 cl, 24 dwg

Sliding bearing // 2528246

FIELD: machine building.

SUBSTANCE: sliding bearing comprises the housing with the antifriction insert made from cermet. From the insert ends in the housing the sealing rings with an inner diameter equal to an inner diameter of the insert, made from a material with a durability not greater, than the durability of the insert material, are installed.

EFFECT: improvement of tribotechnical characteristics of the sliding bearing.

1 dwg

Friction bearing // 2427733

FIELD: machine building.

SUBSTANCE: friction bearing (1) consists of upper case (3) having lower circular surface (2), lower case (5) installed on upper case (3) rotating around axis (O) of case (3) and having upper circular surface (4) opposite to surface (2) of case (3), of circular thrust friction bearing (6) positioned at least on external periphery and/or internal surface of space (36). The packing device has multitude of through orifices made at least on external periphery and/or internal periphery of case (5), circular make-up section (34) inserted into multitude of through orifices for making-up to case (3) and flexible thin-wall circular projecting end section (37) made on section (37) and coming into a sliding contact with case (3) so, as to seal at least internal periphery and/or internal periphery of space (36).

EFFECT: high degree of long-term sealing and damping excessive noise.

11 cl, 23 dwg

Friction bearing // 2427732

FIELD: machine building.

SUBSTANCE: friction bearing (1) consists of upper case (3) having lower circular surface (2), lower case (5) installed on case (3) rotating around axis (O) of case (3) and having upper circular surface (4) opposite to surface (2) of case (3), of circular thrust friction bearing (7) positioned in circular space (6) between surface (2) and surface (4), and of packing device (9) on internal periphery of space (6). Packing device (8) has external periphery packing section (61) positioned between case (3) and case (5) so, as to seal external periphery of space (6) and flexible circular lug (62) made on lower surface of section (61) and projecting in direction of conjugated element (seat of spring) abutting against lower surface of case (5).

EFFECT: preventing penetration of dust and rain water into space between lower case and conjugated element and into space between lower and upper cases even at low accuracy of fabrication of conjugated element.

9 cl, 7 dwg

Bearing // 2415318

FIELD: machine building.

SUBSTANCE: bearing (1) consists of core (2), of bush (3) enveloping core (2) and of flexible element (4) positioned between core (2) and bush (3). Packing element (6) is located on at least one end side (5) of bearing (1). This packing element seals flexible element (4) from environment and has one first (7) and second (8) packing sections. Also, first packing section (7) pressure tight adjoins core (2), while second packing section (8) adjoins bush (3).

EFFECT: improvement of beating due to protection of flexible element of bearing from dirt penetration.

9 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: bearing (LAG) for bearing support of torsion spring (DSF) in roll cushioning system of rail transport facility consists of split bushing (LAB) and of split insertion (LAS) enveloping bushing (LAB) and connected to body of railcar/carriage (WAK/DGS). Also, packing couple (ADI, IDI) is located at least on one end of bearing (LAG). This couple consists of internal elastic packing (IDI) arranged on torsion spring (DSF) and external elastic packing (ADI) arranged on insertion (LAS) of bearing (LAG). Each packing of the couple contains at least one circumferential packing face (DI1, DI2; DAL), while interaction of packing faces facilitates packing.

EFFECT: increased service life due to reduced penetration of moisture and dirt and reduced probability of wedging; reduced time for assembly.

7 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: invention is related to design of roller journal bearing located on the side of sealing barrel. Design (1) of roller (2) journal bearing located on the side of sealing barrel comprises journal bushing (3) installed on roller journal (2), and bushing is matched with rotary ring (5), bearing bushing (7) is installed in bed (6), radial seals with radial jaw pieces (13, 13') matched with bed (6) via holder (11), which interact with rotary ring (5), and sealing system (16), which is installed relative to roller barrel (4). Holder (11) and radial jaw pieces (13, 13') are arranged as a whole in the form of sealing element (8) and form together with sealing jaw piece (15) of sealing system (16) single unit, which is detachably tightly fixed to bed (6). Sealing system (16) comprises L-shaped profile (17), which is mounted on end side (18) of roller (4). There is labyrinth (19) formed between shelves of L-shaped profile (17) and sealing element (8). Sealing jaw piece (15) tightly abuts shelf of L-shaped profile (17).

EFFECT: improvement and optimisation of sealing device so that it is efficiently manufactured and operated, consists of only small number of parts and provides for better sealing action.

12 cl, 4 dwg

The invention relates to the field of rolling mills, and more specifically to a sealing nodes supports rolls of rolling mills

The invention relates to mechanical engineering and can be used in rolling mills to seal bearings

The invention relates to the field of rolling mills, and more specifically to the structure of the sealing device bearings

FIELD: chemistry.

SUBSTANCE: antifriction composite material consists of a matrix in the form of a crystalline copolymer of ethylene with tetrafluoroethylene and reinforcing filler. As the crystalline copolymer of ethylene with tetrafluoroethylene fluoroplastic-40P with packed density of 0.6 g/cm3 is used and as the reinforcing filler crushed carbon cloth Ural T-22 (UTA) with thermochemical treatment of the fibres and with the following characteristics: breaking load - 1428 N (warpwise), 1071 N (fillingwise) is used. A modifier is added to the composition in the form of molybdenum disulphide (MoS2) powder, with the following ratio of components, wt %: fluoroplastic-40P - 54-55, crushed carbon cloth Ural T-22 - 35-36, molybdenum disulphide - the balance.

EFFECT: improved physical-mechanical and antifriction properties of the material, as well as reduced water absorption.

5 dwg, 1 tbl

FIELD: machine building.

SUBSTANCE: invention relates to machine building, namely, to a plain thrust bearing as well as to a combined device of the plain thrust bearing and a piston rod. The plain thrust bearing comprises a casing from artificial resin, a circular cover, a circular metal plate and a plain thrust bearing assembly. The casing includes a hollow cylindrical part with a cylindrical inner edge surface forming a through hole, a circular collar part which, as a solid unit, branches off in the radial direction outwards from the cylindrical outer edge surface and the hollow cylindrical part. The circular cover is fitted by a disk part with inner edge surface forming a through hole which is concentrical to the through hole in the bearing casing. The circular metal plate is fitted by an outer disk part turned in the radial direction outwards, the upper circular surface of the said disk part touches the lower circular surface of the disk part of the circular cover. The plain thrust bearing assembly is set between the bearing casing and the lower circular surface of the outer disk part of the circular metal plate. The combined device of the plain thrust bearing and the piston rod comprises the plain thrust bearing and the piston rod of a hydraulic damper.

EFFECT: improved design.

14 cl, 18 dwg

FIELD: machine building.

SUBSTANCE: plain thrust bearing from the synthetic resin. The bearing contains top casing out of the synthetic resin, bottom casing, thrust bearing assembly from the synthetic resin, outside resilient sealing element and internal resilient sealing element. The thrust bearing assembly from the synthetic resin is installed between top casing and bottom casing.

EFFECT: increased bearing protection against dust and dirty water ingress.

9 cl, 12 dwg

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