Method of balancing wheel

FIELD: motor industry.

SUBSTANCE: invention relates to motor transport. Method of balancing wheel includes at least steps of extrusion of a profile of uncured and/or green viscoelastic polymer, which contains at least one filler and have common density more than 0.9 kg/dm3, separations from extruded profile of forementioned polymer section, the length of which correlates with the required for balancing weight, applications of balance weight to wheel rim and solidification of balance weight on the wheel.

EFFECT: increase of strength and reduce of cost of balancing wheel.

19 cl, 6 dwg

 



 

Same patents:

FIELD: machine building.

SUBSTANCE: turbine plant comprises rotary machine (12, 14, 24) and balance weight (78). Rotary machine comprises spinning component (62) with groove (76) with base (84) and two inclined sides (86) converging in first direction (66) from base (84) to make opening (92). Balance weight (78) is arranged in said groove (76) and has body, first pair of inclined sides (94) converging in first direction and separated by first spacing (98), and second pair of inclined sides (100) converging in said first direction (66) and separated by second spacing (101), larger than said first one. Every side of first pair of inclined sides comprises flat section 96 to allow decrease in spacing (98) between sides (94). Balance weight can pass through said opening into groove (76) and turn for interaction of said inclined sides (86) with second pair of balance weight inclined sides (100).

EFFECT: simplified design of groove and balance weight.

9 cl, 10 dwg

FIELD: machine building.

SUBSTANCE: weight for reducer balancing comprises correction mass and is made as a concentric ring with a protrusion or a flat on the inner surface with radial through and non-through slots.

EFFECT: simplified mounting of the weight for reducer balancing.

2 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: rotor with out-of-balance compensator comprises an impeller of a turbomachine stage and a compensator of impeller out-of-balance in the form of a balance weight made as a segment with circular outer and inner surfaces and a lock member. At least on one side the rotor is fitted by a recess in the impeller body with annular outer and inner undercuts. An annular collar with slots is provided outside on the impeller end face opposite the outer undercut, an outer ledge - opposite the inner undercut. The segment is installed in the undercuts of the impeller recess by the outer conical and the inner surfaces and is fixed by bending the lock member into the collar slot. The slot axis is in the plane being longitudinal to the impeller axis and at an angle to the latter. In the course of the turbomachine operation the balance weight gets in sliding contact by its conical surface with the conical surface of the outer undercut of the disk recess and is reliably pressed by its end face surface to the end face surface of the impeller by centrifugal forces.

EFFECT: invention allows for the simplification of balancing a rotor, for example, an impeller of a turbomachine stage due to no necessity in dismantling it from the machine for balancing, it also provides for decrease of loads on the rotor bearings and for increase of specific speed of the turbomachine due to improved accuracy and stability of the impeller balancing, increased reliability of fixing a balance weight in the impeller and extended service life of the turbomachine impeller.

6 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: weight balance (50) is intended for aircraft turbine engine rotor disk (12, 32). Rotor disk comprises recesses (14, 34) accommodating vanes roots (16, 36) arranged in gaps there between arranged along tangential line to disk (12, 32). Recesses (14, 34) comprise two active side surfaces 4, 4). Weight balance (50) is to be arranged in said gap and comprises two pyramid-shaped end parts. Each of said parts has base, apex and mid part interconnecting two bases of both end parts. Two apices are located along lengthwise axis X. Weight balance (50) comprises two lengthwise planes of symmetry (Y, Z) and (Z, X). All faces (56) of said end parts are identical and have two active surfaces (56, 56) to come in contact with two active side surfaces (4, 4) of relevant recesses (14, 34).

EFFECT: faster and simplified balancing.

20 cl, 11 dwg

FIELD: transport.

SUBSTANCE: proposed micro balls represent proppants with smooth surface, open porosity smaller then 0.3% and Mohs micro hardness smaller than 7. Note here that proppant apparent density varies from 2.5 to 4.0 g/cm3 while sphericity and roundness of proppant exceed 0.9/0.9.

EFFECT: reduced wear.

5 cl, 1 tbl

FIELD: machine engineering, namely self-balancing rotor mechanisms with vertical rotation axis of rotor and gas-static bearing unit.

SUBSTANCE: rotor mechanism includes working organs, gas-static bearing unit with carrying surfaces having mutually corresponding shapes. Pivot of said bearing unit and working organ form rotor whose step bearing has opening for supplying gaseous working fluid to carrying surfaces. Apparatus also includes shaped framework arranged between working organ and pivot and joined with them through flexible members; unit for correcting unbalance of working organ and unit for correcting pivot unbalance. Each correcting unit includes correcting weight and flexible members that join correcting weight with working organ and pivot respectively and engaging with shaped framework. Joining places of flexible members of units for correcting unbalance of working organ and pivot respectively with working organ and with pivot are arranged nearer to rotor rotation axis than places of their engagement with shaped framework. Apparatus also includes system for supplying gas connected with opening of step bearing and drive unit with flexible mechanical transmission for imparting torque for electric motor to pivot, from pivot to shaped framework and from shaped framework to working organ. Each flexible transmission has three shafts successively joined with possibility of crossing their axes; one of said shaft is telescopic. Correcting weight of units for correcting unbalance of working organ and pivot is in the form of several weights mutually joined as ring through elastic members.

EFFECT: enhanced efficiency of self-balancing working organ and pivot due to displacing correcting weight arranged at opposite sides relative to unbalance vector of working organ and pivot by distance exceeding that of displacing working organ and pivot respectively.

2 cl, 6 dwg

FIELD: mechanical engineering.

SUBSTANCE: device comprises housing provided with the closed ring space having smooth surface. The space receives solid movable members, and the remainder space is filled with fluid. The ring space has the rectangular cross-section. The mass of the solid movable members is less than that of the fluid displaced by them.

EFFECT: simplified structure and reduced cost.

2 cl, 2 dwg

FIELD: manufacture of rotary mechanisms.

SUBSTANCE: proposed self-balancing rotary mechanism includes working member, gas-lubricated support unit with bearing surfaces corresponding to each other; its pivot is combined with working member, thus forming the rotor and step bearing has hole for delivery of gaseous working medium to bearing surfaces, gas supply system and drive. Mechanism is provided with shaped support located between working member and pivot and connected with them by means of flexible members, working member unbalance correction unit and pivot unbalance correction unit; each correction unit consists of correcting mass in form of ring and flexible members connecting the correcting mass with working member and pivot, respectively; they are engageable with shaped support; provision is made for flexible mechanical transmissions for imparting torque to shaped support from pivot and to working member from shaped support; each flexible mechanical transmission consists of three shafts connected for intersection of axes; one shaft is telescopic; points of connection of flexible members of working member and pivot unbalance correction units are located closer to axis of rotation as compared with points of their engagement with shaped base.

EFFECT: enhanced operational reliability.

4 dwg

FIELD: manufacture of rotary mechanisms, vertical rotary mechanisms with self-balancing working members in particular.

SUBSTANCE: proposed rotary mechanism has working member, shaped base, working member unbalance correction mechanism, unit for transmission of torque from shaped base to working member and drive with rigid shaft which is connected with shaped base. Working member is connected with shaped base by means of flexible members; working member unbalance correction mechanism consists of correcting mass made from solid body in form of ring and flexible members connecting the correcting mass with working member; these flexible members are engageable with shaped base; unit for transmission of torque from shaped base to working member is made in form of flexible mechanical transmission consisting of three shafts interconnected for intersection of axes; one shaft is telescopic; points of connection of flexible members of working member unbalance correction unit are located closer to axis of rotation of rotor as compared with points of their engagement with shaped base.

EFFECT: enhanced operational reliability of rotary mechanism.

4 dwg

The invention relates to mechanical engineering and can be used for multiple automatic balancing of rotors mainly for wheels of motor vehicles

FIELD: manufacture of rotary mechanisms, vertical rotary mechanisms with self-balancing working members in particular.

SUBSTANCE: proposed rotary mechanism has working member, shaped base, working member unbalance correction mechanism, unit for transmission of torque from shaped base to working member and drive with rigid shaft which is connected with shaped base. Working member is connected with shaped base by means of flexible members; working member unbalance correction mechanism consists of correcting mass made from solid body in form of ring and flexible members connecting the correcting mass with working member; these flexible members are engageable with shaped base; unit for transmission of torque from shaped base to working member is made in form of flexible mechanical transmission consisting of three shafts interconnected for intersection of axes; one shaft is telescopic; points of connection of flexible members of working member unbalance correction unit are located closer to axis of rotation of rotor as compared with points of their engagement with shaped base.

EFFECT: enhanced operational reliability of rotary mechanism.

4 dwg

FIELD: manufacture of rotary mechanisms.

SUBSTANCE: proposed self-balancing rotary mechanism includes working member, gas-lubricated support unit with bearing surfaces corresponding to each other; its pivot is combined with working member, thus forming the rotor and step bearing has hole for delivery of gaseous working medium to bearing surfaces, gas supply system and drive. Mechanism is provided with shaped support located between working member and pivot and connected with them by means of flexible members, working member unbalance correction unit and pivot unbalance correction unit; each correction unit consists of correcting mass in form of ring and flexible members connecting the correcting mass with working member and pivot, respectively; they are engageable with shaped support; provision is made for flexible mechanical transmissions for imparting torque to shaped support from pivot and to working member from shaped support; each flexible mechanical transmission consists of three shafts connected for intersection of axes; one shaft is telescopic; points of connection of flexible members of working member and pivot unbalance correction units are located closer to axis of rotation as compared with points of their engagement with shaped base.

EFFECT: enhanced operational reliability.

4 dwg

FIELD: mechanical engineering.

SUBSTANCE: device comprises housing provided with the closed ring space having smooth surface. The space receives solid movable members, and the remainder space is filled with fluid. The ring space has the rectangular cross-section. The mass of the solid movable members is less than that of the fluid displaced by them.

EFFECT: simplified structure and reduced cost.

2 cl, 2 dwg

FIELD: machine engineering, namely self-balancing rotor mechanisms with vertical rotation axis of rotor and gas-static bearing unit.

SUBSTANCE: rotor mechanism includes working organs, gas-static bearing unit with carrying surfaces having mutually corresponding shapes. Pivot of said bearing unit and working organ form rotor whose step bearing has opening for supplying gaseous working fluid to carrying surfaces. Apparatus also includes shaped framework arranged between working organ and pivot and joined with them through flexible members; unit for correcting unbalance of working organ and unit for correcting pivot unbalance. Each correcting unit includes correcting weight and flexible members that join correcting weight with working organ and pivot respectively and engaging with shaped framework. Joining places of flexible members of units for correcting unbalance of working organ and pivot respectively with working organ and with pivot are arranged nearer to rotor rotation axis than places of their engagement with shaped framework. Apparatus also includes system for supplying gas connected with opening of step bearing and drive unit with flexible mechanical transmission for imparting torque for electric motor to pivot, from pivot to shaped framework and from shaped framework to working organ. Each flexible transmission has three shafts successively joined with possibility of crossing their axes; one of said shaft is telescopic. Correcting weight of units for correcting unbalance of working organ and pivot is in the form of several weights mutually joined as ring through elastic members.

EFFECT: enhanced efficiency of self-balancing working organ and pivot due to displacing correcting weight arranged at opposite sides relative to unbalance vector of working organ and pivot by distance exceeding that of displacing working organ and pivot respectively.

2 cl, 6 dwg

FIELD: transport.

SUBSTANCE: proposed micro balls represent proppants with smooth surface, open porosity smaller then 0.3% and Mohs micro hardness smaller than 7. Note here that proppant apparent density varies from 2.5 to 4.0 g/cm3 while sphericity and roundness of proppant exceed 0.9/0.9.

EFFECT: reduced wear.

5 cl, 1 tbl

FIELD: machine building.

SUBSTANCE: weight balance (50) is intended for aircraft turbine engine rotor disk (12, 32). Rotor disk comprises recesses (14, 34) accommodating vanes roots (16, 36) arranged in gaps there between arranged along tangential line to disk (12, 32). Recesses (14, 34) comprise two active side surfaces 4, 4). Weight balance (50) is to be arranged in said gap and comprises two pyramid-shaped end parts. Each of said parts has base, apex and mid part interconnecting two bases of both end parts. Two apices are located along lengthwise axis X. Weight balance (50) comprises two lengthwise planes of symmetry (Y, Z) and (Z, X). All faces (56) of said end parts are identical and have two active surfaces (56, 56) to come in contact with two active side surfaces (4, 4) of relevant recesses (14, 34).

EFFECT: faster and simplified balancing.

20 cl, 11 dwg

FIELD: machine building.

SUBSTANCE: rotor with out-of-balance compensator comprises an impeller of a turbomachine stage and a compensator of impeller out-of-balance in the form of a balance weight made as a segment with circular outer and inner surfaces and a lock member. At least on one side the rotor is fitted by a recess in the impeller body with annular outer and inner undercuts. An annular collar with slots is provided outside on the impeller end face opposite the outer undercut, an outer ledge - opposite the inner undercut. The segment is installed in the undercuts of the impeller recess by the outer conical and the inner surfaces and is fixed by bending the lock member into the collar slot. The slot axis is in the plane being longitudinal to the impeller axis and at an angle to the latter. In the course of the turbomachine operation the balance weight gets in sliding contact by its conical surface with the conical surface of the outer undercut of the disk recess and is reliably pressed by its end face surface to the end face surface of the impeller by centrifugal forces.

EFFECT: invention allows for the simplification of balancing a rotor, for example, an impeller of a turbomachine stage due to no necessity in dismantling it from the machine for balancing, it also provides for decrease of loads on the rotor bearings and for increase of specific speed of the turbomachine due to improved accuracy and stability of the impeller balancing, increased reliability of fixing a balance weight in the impeller and extended service life of the turbomachine impeller.

6 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: weight for reducer balancing comprises correction mass and is made as a concentric ring with a protrusion or a flat on the inner surface with radial through and non-through slots.

EFFECT: simplified mounting of the weight for reducer balancing.

2 cl, 4 dwg

FIELD: machine building.

SUBSTANCE: turbine plant comprises rotary machine (12, 14, 24) and balance weight (78). Rotary machine comprises spinning component (62) with groove (76) with base (84) and two inclined sides (86) converging in first direction (66) from base (84) to make opening (92). Balance weight (78) is arranged in said groove (76) and has body, first pair of inclined sides (94) converging in first direction and separated by first spacing (98), and second pair of inclined sides (100) converging in said first direction (66) and separated by second spacing (101), larger than said first one. Every side of first pair of inclined sides comprises flat section 96 to allow decrease in spacing (98) between sides (94). Balance weight can pass through said opening into groove (76) and turn for interaction of said inclined sides (86) with second pair of balance weight inclined sides (100).

EFFECT: simplified design of groove and balance weight.

9 cl, 10 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to tyre balancing, which eliminates imbalance in automobile wheels. Gel composition for tyre balancing contains 1) 85-97 wt % of glycolic ether component, which contains mixture of two ethers of ethylene/propyleneglycol copolymer of general formula (I) or general formula (II) or their mixture R-O{[CH(CH3)CH2-O-]m[CH2-CH2-O]n}H (I), R1-O{[CH(CH3)CH2-O-]m[CH2-CH2-O]n}H2 (II), where R represents hydrogen or alkyl group of 2-8 carbon atoms; R1 represents alkylene component of 2-8 carbon atoms, in which one and the same carbon atom does not carry two substituents; m represents percent wt % of propyleneglycol in component or components of ethylene/propyleneglycol copolymer and n represents wt % of ethyleneglycol in component or components of ethylene/propyleneglycol copolymer, wherein n:m ratio is in the range from 35:65 to 80:20; each glycol copolymer compound has number average molecular weight 2000-10000; and 2) 3-15 wt % of gel-generating silicagel substance. Balancing composition is viscoelastic and has accumulation modulus (G'), constituting from 1500 Pa to 5000 Pa at 22C, loss modulus (G"), lower than accumulation modulus up to transition frequency, constituting 10-40 Hz, and critical fluidity tension higher than 2 Pa.

EFFECT: invention improves balancing quality.

8 cl, 5 dwg, 2 tbl

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