Turntable

FIELD: materials handling facilities.

SUBSTANCE: invention relates to turntables of cranes and other load lifting machines. Proposed turntable consists of fixed and movable upper and lower rings and roller solids of revolution arranged in cress-cross manner and installed in raceways. Ring step formed on raceways by rollers worn along ring is eliminated by sphere of ball solids of revolution installed between roller solids of revolution.

EFFECT: increased service life turntable.

4 dwg

 

The invention relates to a support and turning circles cranes and other lifting machines.

The known reference-turntable lifting machines, as the USSR №265001, M CL 02F 9/12, comprising a fixed and movable upper and lower rings and installed in raceways (treadmills) rolling elements (rollers). The stationary ring of the circle is attached to the rotary part of the crane, moving to the rotary part.

Job description support-rotating circles hoisting machine

The transfer of loads to the load occurs through the bonded upper and lower movable ring circle on the rolling body, and then to the stationary ring of the circle and in the case of hoisting machine.

Description of the shortcomings of the support-rotating circles

In the known construction of the rolling elements (rollers), arranged crosswise relative to each other, are in constant point contact with each other and in line with treadmills. In the process, the contact of the rolling elements (rollers) is on the circle line, the entire rest of the surface is out of contact, and contact with treadmills is on the line. Therefore, in most cases, the roller bearing slewing circle, worked for 3...5 years, have wear and tear in the form of an annular groove on the surface on which they destroyed the E. At the same time an annular protrusions on the surface of treadmills, which together leads to the destruction of rotation of the circle. It is a disadvantage of the known constructions.

When using the same ball rolling bodies is point contact between rolling elements and raceways, why perimeter raceways formed spherical annular grooves. This causes wear of the support-of the turntable and is also a disadvantage.

An object of the invention is to develop a design support-turntable, allowing to increase its durability.

The technical result is achieved due to the installation of cross-country tracks at the same time the rolling bodies from point and line contact with treadmills and a point between the rolling elements, namely: the essence of the invention lies in the fact that in the turning circle, comprising a fixed and movable upper and lower rings and installed in raceways located crosswise of the roller body of the roller between the roller rolling bodies mounted ball rolling body, cleaning the area of the annular protrusion from wearing the ring roller of the rolling elements.

Figure 1 shows the cross-section rotation circle; figure 2 shows the location of wear: the surface of the roller in the form to Lavoy grooves, and on the treadmill in the form of an annular ledge; figure 3 shows the location of wear on the treadmill in the form of a spherical ring grooves; figure 4 shows a section a-a rotation of the circle with spaced cross-shaped roller rolling bodies 1 and between them the ball rolling bodies 2 (option 1 and option 2).

Due to this arrangement of the rolling elements in the functioning of the turntable begins to form an annular ledge on treadmills from a worn ring of rollers immediately removed sphere ball rolling body. This makes the process of wear of the raceway increases in time in relation to the wear tracks of the musculo-turntable when there are only roller or just the ball rolling bodies, which increases the durability of the circle as a whole.

Bearing slewing rim, comprising a fixed and movable upper and lower rings and installed in raceways cross-positioned roller rolling elements, characterized in that the annular ledge on treadmills from wearing the ring roller is removed by sphere ball rolling elements mounted between the roller rolling bodies.



 

Same patents:

Slewing circle // 2280611

FIELD: mechanical engineering.

SUBSTANCE: invention relates to slewing circles of cranes and other load-lifting machines. Proposed slewing circle consists of fixed and movable upper and lower races interconnected by bolts, and solids of revolution placed in between. Lower movable race is connected with gasket made of high-strength material installed from lower side of race. Said gasket can be sectional, with butts located in non-loaded zones and can be secured by bolts or glue.

EFFECT: increased durability of slewing circle.

3 dwg

FIELD: forestry, in particular, processing apparatuses for tree harvesting machine used in tree felling and bunching equipment.

SUBSTANCE: supporting-rotating apparatus has base and rotary platform between which are positioned three rotating wheels and two intermediate members, said intermediate members being mounted between rotating wheels. Central brake is installed on rotary platform and is cooperating with base through joining link which is connected with its upper end through Hooke's universal joint and central brake to rotary platform and with its lower end through the same Hooke's universal joint to base. Link is adapted for changing its length by means of, for example, splined joint. Intermediate and lower rotary wheels are equipped with brakes. Intermediate rotary wheel brake is mounted on upper intermediate member. Lower rotary wheel brake is mounted on lower intermediate member. Rotary wheels are arranged at an angle with respect to each other. On rotation of rotary platform, rotation mechanism cooperates with one of rotary wheels. During operation on slopes, individual members of apparatus are rotated to thereby level rotary platform until it is rotated and set in horizontal plane.

EFFECT: increased efficiency by employing machine for felling and bunching trees on uneven felling areas and on slopes, reduced labor intensity, and provision for creating comfortable working conditions for operators.

3 cl

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Bearing slewing rim // 2015264
The invention relates to the mechanisms of rotation of the platforms digging and lifting machines, and more particularly to a support and turning circles

FIELD: mechanical engineering; tower cranes.

SUBSTANCE: invention relates to means of tightening bolts or nuts of larger-size bolted joints. Method includes manual turning in and off of bolt of bolted joint by rotating bolt head by lever wrench until definite axial force appears in threaded joint with subsequent tightening of bolt by mechanical tightening member. Prior to tightening bolt or prior to its backing off, wrench is connected with first bolt of bolted joint of slewing circle, and then lever of member is connected with second bolt of bolted joint, then lever of member and lever of wrench are connected in plane of arrangement of bolt heads. Wrench and member lever are locked to prevent displacement in vertical direction, and then distance between lever of wrench and second bolt of bolted joint is decreased or increased. Invention provides three design versions of device for implementing the method.

EFFECT: provision of compact device for use in confined spaces.

5 cl, 9 dwg

Slewing circle // 2280611

FIELD: mechanical engineering.

SUBSTANCE: invention relates to slewing circles of cranes and other load-lifting machines. Proposed slewing circle consists of fixed and movable upper and lower races interconnected by bolts, and solids of revolution placed in between. Lower movable race is connected with gasket made of high-strength material installed from lower side of race. Said gasket can be sectional, with butts located in non-loaded zones and can be secured by bolts or glue.

EFFECT: increased durability of slewing circle.

3 dwg

FIELD: forestry, in particular, processing apparatuses for tree harvesting machine used in tree felling and bunching equipment.

SUBSTANCE: supporting-rotating apparatus has base and rotary platform between which are positioned three rotating wheels and two intermediate members, said intermediate members being mounted between rotating wheels. Central brake is installed on rotary platform and is cooperating with base through joining link which is connected with its upper end through Hooke's universal joint and central brake to rotary platform and with its lower end through the same Hooke's universal joint to base. Link is adapted for changing its length by means of, for example, splined joint. Intermediate and lower rotary wheels are equipped with brakes. Intermediate rotary wheel brake is mounted on upper intermediate member. Lower rotary wheel brake is mounted on lower intermediate member. Rotary wheels are arranged at an angle with respect to each other. On rotation of rotary platform, rotation mechanism cooperates with one of rotary wheels. During operation on slopes, individual members of apparatus are rotated to thereby level rotary platform until it is rotated and set in horizontal plane.

EFFECT: increased efficiency by employing machine for felling and bunching trees on uneven felling areas and on slopes, reduced labor intensity, and provision for creating comfortable working conditions for operators.

3 cl

FIELD: materials handling facilities.

SUBSTANCE: invention relates to devices for taking loose materials from pile and stowing them in layers differing in content of useful component in each layer with simultaneous averaging in process of taking material from pile and it can be used in open stores. Proposed loose material stower-gripper has boom of gripper and boom of stower of lift-lower type turnable in horizontal plane by slewing circle installed on base and drives to turn booms of gripper and stower. Slewing circle is made in form of fixed rings rigidly secured to each other and to frame of base, two coaxially arranged movable rings with gear rims resting of fixed rings through solids of revolution. Movable rings are non-connected mechanically, one movable ring being furnished with external teeth rim coupled with gripper boom turning drive, and the other is provided with internal teeth rim coupled with stower boom turning drive. Each toothed rim has independent self-contained system to regulate geometrical parameters of mating of solids of revolution with movable and fixed rings. Base be made in form of self-propelled chassis or stationary portal. Gripper boom has gripping member of rotary or scraper type.

EFFECT: reduced overall dimensions of stower-gripper, facilitated maintenance.

4 cl, 4 dwg

The invention relates to hoisting and transport machinery

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The invention relates to hoisting and transport machinery, namely the support-rotating devices crane-manipulator units of high capacity, placed mainly on chassis vehicles

The invention relates to hoisting and transport machinery, in particular to the equipment forestry machines manipulator type, and can be used, for example, in the timber industry

The invention relates to the technical equipment forestry machines manipulator type, namely the support-rotating devices, and can be used in the forest industry and forestry

FIELD: materials handling facilities.

SUBSTANCE: invention relates to devices for taking loose materials from pile and stowing them in layers differing in content of useful component in each layer with simultaneous averaging in process of taking material from pile and it can be used in open stores. Proposed loose material stower-gripper has boom of gripper and boom of stower of lift-lower type turnable in horizontal plane by slewing circle installed on base and drives to turn booms of gripper and stower. Slewing circle is made in form of fixed rings rigidly secured to each other and to frame of base, two coaxially arranged movable rings with gear rims resting of fixed rings through solids of revolution. Movable rings are non-connected mechanically, one movable ring being furnished with external teeth rim coupled with gripper boom turning drive, and the other is provided with internal teeth rim coupled with stower boom turning drive. Each toothed rim has independent self-contained system to regulate geometrical parameters of mating of solids of revolution with movable and fixed rings. Base be made in form of self-propelled chassis or stationary portal. Gripper boom has gripping member of rotary or scraper type.

EFFECT: reduced overall dimensions of stower-gripper, facilitated maintenance.

4 cl, 4 dwg

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