CN201501751U - Heavy load large-sized pivoting support - Google Patents

Abstract

The utility model relates to a heavy load large-sized pivoting support belonging to pivoting supports. The heavy load large-sized pivoting support is characterized in that an outer ring is divided into an upper outer ring and a lower outer ring; the internally circumferential wall of the upper outer ring is sequentially provided with two-section internal stepped ring-shaped sections from bottom to top and the internal circumferential wall of the lower outer ring is sequentially provided with three-section internal stepped ring-shaped sections from top to bottom; the upper outer ring and the lower outer ring are correspondingly embedded into a whole and are fixedly connected by screwing a bolt; the externally circumferential wall of the middle part of an inner ring is turned into a ring-shaped convex ring section; three rows of rollers are installed between the inner ring and the outer ring as a rolling body; a fourth rolling raceway is arranged between the lower outer ring and a flange plate of a lower body of a crane, and is internally distributed with steel balls as rolling bodies; and the upper end part of the internal wall of the upper outer ring, the upper surface of the inner ring and the lower end section of the outer circumferential wall of the inner ring are respectively provided with a ring-shaped sealing groove, and are correspondingly provided with sealing strips. The heavy load large-sized pivoting support has safe and reliable use, large carrying capacity, and can save the mounting space and reduce the labor intensity of workers as well as the production cost.

Description

Heavy-load large-size pivoting support

Technical field

The utility model belongs to pivoting support, especially relates to a kind of large-size pivoting support.

Background technology

On the large-scale crawler crane of construction machinery and equipment, pivoting support is subjected to the axial load and the capsizing moment of heavy load, if want to improve the work load capacity of hoisting crane, reach the purpose of bearing bigger capsizing moment, the radial dimension and the axial dimension of the traditional pivoting support that uses certainly will enlarge so at present, cause installing space to become big, make that the volume of fuselage also becomes big thereupon on the hoisting crane, increased working strength of workers, the hoisting crane productive costs also just increases thereupon.

Summary of the invention

The purpose of this utility model provides a kind of heavy-load large-size pivoting support, can not only improve the load-carrying capacity of pivoting support effectively, satisfies the demand in market, and saves installing space, alleviates labor strength, reduces production costs.

The purpose of this utility model is achieved like this: a kind of heavy-load large-size pivoting support, comprise the outer ring, inner ring, roller and spacing block, inner ring is installed in the outer ring and is relatively rotated by the roller support, it is characterized in that: the outer ring is divided into outer ring and following outer ring, on the internal perisporium of last outer ring, offer step ring segment in two sections from the bottom to top successively, promptly in the internal diameter of last outer ring, offer two sections step endoporus from the bottom to top successively, and reduce from the bottom to top piecemeal in the aperture, while is the seam section under turning annular on the periphery of the bottom of last outer ring, correspondingly makes the lower end of outer ring form annular boss; And on the internal perisporium of the following outer ring that is the disc formula, offer step ring segment in three sections from top to bottom successively, promptly in the internal diameter of following outer ring, offer three sections inner bore of step from top to bottom successively, and the aperture from top to bottom increases piecemeal, inboard at following outer ring upper surface has annular convex platform, and the seam section is corresponding chimeric and on making under the annular on this annular convex platform and the last outer ring, the corresponding setting-in in following outer ring is integral, annular inner concave is also offered in bottom in following outer ring, make down the bottom of outer ring form annular ring, corresponding to last, the chimeric position of following outer ring, circumference uniform distribution on the indent formula bottom surface of following outer ring offer through on the tapped bore of outer ring, the spinning bolt will be gone up in each tapped bore, following outer ring is fastenedly connected; The upper end section of the periphery wall of inner ring being lathed the annular terrace section of appearing on the stage, the bottom of the periphery wall of inner ring is lathed annular leave from office terrace section, is the annular bead section between this upper and lower annular table terrace section; The uniform roller of installing of annular between the stepped hole in the annular of inner ring is appeared on the stage the epimere of terrace section and last outer ring, should go up roller is inlaid in the window formula spacing block, roller under the annular uniform installation between the stepped hole in the hypomere of the annular leave from office terrace section of inner ring and following outer ring, this time roller is inlaid in down in the window formula spacing block, and roller outside the annular uniform installation between the stepped hole in the epimere on annular bead section on inner ring and the following outer ring, outer roller also is inlaid in the external window type spacing block, like this, arrange rollers as rolling body with three between inner ring and the outer ring, greatly improved load-carrying capacity; In addition, the bottom of the following annular ring of outer ring and the top of fuselage flange under the hoisting crane corresponding respectively offer the semicircle cambered surface on raceway and following raceway to form the 4th road raceway, uniform installation steel ball has further improved the load-carrying capacity of whole pivoting support as rolling body in this 4th road raceway; Offer annular seal groove respectively in the upper end of last outer ring inwall with on the upper surface of inner ring and lower end section at the periphery wall of inner ring; and the corresponding respectively sealing band of installing; in addition; the both sides of the 4th road raceway are offered annular seal groove respectively on following outer ring; and the corresponding respectively seal ring of installing; prevent the leakage of grease; on last outer ring and following outer ring, offer simultaneously with the corresponding oil duct that communicates of raceway of the raceway of each roller and steel ball respectively and install zerk additional; be lubricated; protect each raceway; reduce friction, make body revolution smooth and easy, prolong raceway service life.

The heavy-load large-size pivoting support that the utility model proposed, rational in infrastructure, safe and reliable, load-carrying capacity is big, satisfies the demand in market, and saves installing space, alleviates labor strength, reduces production costs.

Now in conjunction with the accompanying drawings and embodiments the heavy-load large-size pivoting support that the utility model proposed is described further.

Description of drawings

Fig. 1 is the main cross-sectional schematic of the heavy-load large-size pivoting support that proposes of the utility model.

Among Fig. 1: 1, down outer ring 2, zerk 3, go up outer ring 4, outer roller 5, external window type spacing block 6, go up roller 7, go up window formula spacing block 8, roller 9, window formula spacing block 10, inner ring 11, sealing band 12, outer ring 13, hoisting crane lower part of the body flange 14, steel ball 15, seal ring 16, tie bolt down down

Specific implementation method

As can be seen from Figure 1: a kind of heavy-load large-size pivoting support, comprise outer ring 12, inner ring 10, roller and spacing block, inner ring 10 is installed in the outer ring 12 and is relatively rotated by the roller support, it is characterized in that: outer ring 12 is divided into outer ring 3 and following outer ring 1, on the internal perisporium of last outer ring 3, offer step ring segment in two sections from the bottom to top successively, promptly in the internal diameter of last outer ring 3, offer two sections step endoporus from the bottom to top successively, and reduce from the bottom to top piecemeal in the aperture, while is the seam section under turning annular on the periphery of the bottom of last outer ring 3, correspondingly makes 3 lower ends, outer ring form annular boss; And on the internal perisporium of the following outer ring 1 that is the disc formula, offer step ring segment in three sections from top to bottom successively, promptly in the internal diameter of following outer ring 1, offer three sections inner bore of step from top to bottom successively, and the aperture from top to bottom increases piecemeal, inboard at following outer ring 1 upper surface has annular convex platform, and the seam section is corresponding chimeric and on making under the annular on this annular convex platform and the last outer ring 3, following outer ring 3,1 corresponding setting-in is integral, annular inner concave is also offered in bottom in following outer ring 1, make down the bottom of outer ring 1 form annular ring, corresponding to last, following outer ring 3,1 chimeric position, circumference uniform distribution on the indent formula bottom surface of following outer ring 1 offer through on the tapped bore of outer ring, spinning tie bolt 16 will be gone up in each tapped bore, following outer ring 3,1 is fastenedly connected; The upper end section of the periphery wall of inner ring 10 being lathed the annular terrace section of appearing on the stage, the bottom of the periphery wall of inner ring 10 is lathed annular leave from office terrace section, is the annular bead section between this upper and lower annular table terrace section; The uniform roller 6 of installing of annular between the stepped hole in the annular of inner ring 10 is appeared on the stage the epimere of terrace section and last outer ring 3, should go up roller 6 is inlaid in the window formula spacing block 7, roller 8 under the annular uniform installation between the stepped hole in the hypomere of the annular leave from office terrace section of inner ring 10 and following outer ring 1, this time roller 8 is inlaid in down in the window formula spacing block 9, and roller 4 outside the annular uniform installation between the stepped hole in the epimere on annular bead section on inner ring 10 and the following outer ring 1, outer roller 4 also is inlaid in the external window type spacing block 5, like this, arrange rollers as rolling body with three between inner ring 10 and the outer ring 12, greatly improved load-carrying capacity; In addition, the bottom of the following annular ring of outer ring 1 and the top of fuselage flange 13 under the hoisting crane corresponding respectively offer the semicircle cambered surface on raceway and following raceway to form the 4th road raceway, uniform installation steel ball 14 further improves the load-carrying capacity of whole pivoting support as rolling body in this 4th road raceway; Offer annular seal groove respectively in the upper end of last outer ring 3 inwalls with on the upper surface of inner ring 10 and lower end section at the periphery wall of inner ring 10; and the corresponding respectively sealing band 11 of installing; in addition; the both sides of the 4th road raceway are offered annular seal groove respectively on following outer ring 1; and the corresponding respectively seal ring 15 of installing; prevent the leakage of grease; on last outer ring 3 and following outer ring 1, offer simultaneously with the corresponding oil duct that communicates of raceway of the raceway of each roller and steel ball 14 respectively and install zerk 2 additional; be lubricated; protect each raceway; reduce friction, make body revolution smooth and easy, prolong raceway service life.

Claims (1)

1. a heavy-load large-size pivoting support comprises outer ring (12), inner ring (10), roller and spacing block, it is characterized in that:

A, outer ring (12) are divided into outer ring (3) and following outer ring (1), on the internal perisporium of last outer ring (3), offer step ring segment in two sections from the bottom to top successively, promptly in the internal diameter of last outer ring (3), offer two sections step endoporus from the bottom to top successively, and reduce from the bottom to top piecemeal in the aperture, while is the seam section under turning annular on the periphery of the bottom of last outer ring 3, correspondingly makes lower end, outer ring (3) form annular boss;

B, on the internal perisporium of the following outer ring (1) that is the disc formula, offer step ring segment in three sections from top to bottom successively, promptly in the internal diameter of following outer ring (1), offer three sections inner bore of step from top to bottom successively, and the aperture from top to bottom increases piecemeal, inboard at following outer ring (1) upper surface has annular convex platform, and the seam section is corresponding chimeric and on making under the annular on this annular convex platform and last outer ring (3), following outer ring (3,1) corresponding setting-in is integral, annular inner concave is also offered in bottom in following outer ring (1), make down the bottom of outer ring (1) form annular ring, corresponding to last, following outer ring (3,1) chimeric position, circumference uniform distribution is offered the through tapped bore of going up the outer ring on the indent formula bottom surface of following outer ring (1), spinning tie bolt (16) will be gone up in each tapped bore, following outer ring (3,1) is fastenedly connected;

C, the upper end section of the periphery wall of inner ring (10) being lathed the annular terrace section of appearing on the stage, the bottom of the periphery wall of inner ring (10) is lathed annular leave from office terrace section, is the annular bead section between this upper and lower annular table terrace section;

D, the uniform roller (6) of installing of annular between the stepped hole in the annular of inner ring (10) is appeared on the stage the epimere of terrace section and last outer ring (3), should go up roller (6) is inlaid in the window formula spacing block (7), roller (8) under the annular uniform installation between the stepped hole in annular leave from office terrace section on inner ring (10) and the hypomere on the following outer ring (1), this time roller (8) is inlaid in down in the window formula spacing block (9), and roller (4) outside the annular uniform installation between the stepped hole in the epimere on annular bead section on inner ring (10) and the following outer ring (1), outer roller (4) is inlaid in the external window type spacing block (5);

E, in the bottom of the following annular ring of outer ring (1) and under hoisting crane corresponding respectively the last raceway of offering the semicircle cambered surface in the top of fuselage flange (13) and following raceway to form the 4th road raceway, uniform installation steel ball (14) in this 4th road raceway;

F, offer annular seal groove respectively in the upper end of last outer ring (3) inwall with on the upper surface of inner ring (10) and lower end section at the periphery wall of inner ring (10), and the corresponding respectively sealing band (11) of installing, both sides at last the 4th road raceway in following outer ring (1) are offered annular seal groove respectively, and the respectively corresponding seal ring (15) of installing, on last outer ring (3) and following outer ring (1), offer with the corresponding oil duct that communicates of raceway of the raceway of each roller and steel ball (14) respectively and install zerk (2) additional.