CN203412927U

CN203412927U - Ultra-large flexible thrust bearing

Info

Publication number: CN203412927U
Application number: CN201320433962.7U
Authority: CN
Inventors: 吴梦强; 何冠杰; 徐铮; 张锐; 贾永涛; 冯超; 黎定仕
Original assignee: China Academy of Launch Vehicle Technology CALT; Beijing Institute of Space Launch Technology
Current assignee: China Academy of Launch Vehicle Technology CALT; Beijing Institute of Space Launch Technology
Priority date: 2013-07-19
Filing date: 2013-07-19
Publication date: 2014-01-29
Anticipated expiration: 2023-07-19

Abstract

The utility model discloses an ultra-large flexible thrust bearing which comprises an upper roller path, a lower roller path, roll balls and retainers, wherein both the upper and lower roller paths are circular; an upper roll ball groove extending in the circumferential direction of the upper roller path is formed in the lower surface of the upper roller path; a lower roll ball groove extending in the circumferential direction of the lower roller path is formed in the upper surface of the lower roller path; both the upper and lower roll ball grooves are arc grooves matched with the roll balls; the retainers are cylindrical; containing grooves are formed in the two end surfaces of each retainer respectively; the roll balls and the retainers are all arranged between the upper and lower roller paths, positioned in the upper and lower roll ball grooves and arranged at intervals; the roll balls on the two sides of each retainer are arranged in the two containing grooves respectively. The ultra-large flexible thrust bearing can be used for a launching pad with large volume and high weight, so that the launching pad can stably, safely and reliably rotate.

Description

The flexible thrust bearing of super sized type

Technical field

The utility model relates to a kind of rocket launching pad equipment therefor, relates to specifically a kind of thrust bearing.

Background technique

Pad is to develop for meeting the mission need of carrier rocket, and it mainly has following functions:

1, vertical support, fixedly rocket, and the installation annex relevant with rocket;

2, coordinate pylon to complete the task of binding booster rocket;

3, rocket is carried out to perpendicularity adjustment and orientation adjustment;

The flame of ejection when 4, row leads rocket motor work.

For making pad meet above-mentioned functions, pad is designed to base and the large assembly of rotating part two, thrust bearing and driving mechanism are set between the two.Because pad rotating part diameter reaches, 13m is many, load-carrying reaches more than 800 ton, simultaneously, because pad rotating part is a cylindrical, interior side's beam type structure, after bearing the load of more than 800 ton, have local deformation, therefore need to there is certain flexibility by this thrust bearing, can adapt to the distortion of pad rotating part, not meet in the market the matured product of above-mentioned requirements.

Model utility content

The purpose of this utility model is to provide the flexible thrust bearing of a kind of super sized type, the pad that it can be large for volume, weight is large, make pad can be steadily, safety, revolution reliably.

To achieve these goals, technical solution of the present utility model is:

The flexible thrust bearing of a kind of super sized type, comprise raceway, lower raceway, ball and retainer, on, lower raceway is ring-type, the lower surface of upper raceway is provided with the upper ball grooves of circumferential extension, the upper surface of lower raceway is provided with the lower ball grooves of circumferential extension, on, lower ball grooves is the curve bath adapting with ball, retainer is cylindric, and be respectively equipped with containing groove in retainer both ends of the surface, several balls, several retainers are all arranged at, between lower raceway and ball, retainer is positioned at, in lower ball grooves, ball, retainer interval arranges, the ball of retainer both sides is located at respectively in two containing grooves.

The flexible thrust bearing of the utility model super sized type, wherein, described lower raceway is provided with positive stop lug boss, and positive stop lug boss is positioned at lower raceway upper surface outside and along the circumferential extension of lower raceway, the lower surface outer side of described upper raceway can be resisted against on positive stop lug boss.

The flexible thrust bearing of the utility model super sized type, wherein, described upper and lower ball grooves surface is quench hardened case.

The flexible thrust bearing of the utility model super sized type, wherein, is equipped with mounting hole on described upper and lower raceway.

Adopt after such scheme, because the flexible thrust bearing of the utility model super sized type comprises upper and lower raceway, upper and lower raceway is ring-type, between upper and lower raceway, be provided with ball and retainer, upper and lower raceway can be made large-size as required, therefore upper and lower raceway can be individually fixed on the rotating part and base of pad, and rotating part can be rotated relatively with base, and rotary course steadily, safely, reliably.

In addition, because lower raceway is provided with positive stop lug boss, the outer side of upper raceway can be resisted against on positive stop lug boss, guarantees that pad is in turning course, and the axial position of rotating part and base is stable, and turning course is more steady.

Also have, upper and lower ball grooves surface is quench hardened case, and the compatibility of deformation ability on upper and lower ball grooves surface is strengthened, and upper and lower raceway integrated carrying ability is strengthened.

Accompanying drawing explanation

Fig. 1 is the sectional view of the flexible thrust bearing of the utility model super sized type;

Fig. 2 is the arranging structure schematic diagram of ball and retainer in the flexible thrust bearing of the utility model super sized type;

Fig. 3 is the sectional view of upper raceway in the flexible thrust bearing of the utility model super sized type;

Fig. 4 is the sectional view of lower raceway in the flexible thrust bearing of the utility model super sized type;

Fig. 5 is the sectional view of retainer in the flexible thrust bearing of the utility model super sized type;

Fig. 6 is the mounting structure schematic diagram of the flexible thrust bearing of the utility model super sized type;

Fig. 7 is the structural drawing on lower ball grooves surface in the flexible thrust bearing of the utility model super sized type.

Embodiment

As Fig. 1, shown in 2, the flexible thrust bearing of the utility model super sized type, comprise raceway 11, lower raceway 13, a plurality of balls 15 and a plurality of retainer 17, on,

lower raceway

11, 13 are ring-type, as Fig. 3, shown in 4, the lower surface of upper raceway 11 is provided with the upper ball grooves 111 of circumferential extension, the upper surface of lower raceway 13 is provided with the lower ball grooves 131 of circumferential extension, on,

lower ball grooves

111, 131 are curve bath, the equal diameters of the diameter of curve bath and ball 15, as shown in Figure 5, retainer 17 is cylindric, in retainer 17 both ends of the surface, be respectively equipped with containing

groove

171, 172, a plurality of balls 15, a plurality of retainers 17 are all arranged at, lower raceway 11, between 13 and ball 15, retainer 17 is positioned at, lower ball grooves 111, in 131, ball 15, retainer 17 intervals arrange, the ball 15 of retainer 17 both sides is located at respectively two containing grooves 171, in 172.

Upper and

lower raceway

11,13 is provided with mounting hole, as shown in Figure 6, the flexible thrust bearing of the utility model super sized type in use, upper raceway 11 is screwed onto rotating part 01 lower surface of pad, lower raceway 13 is screwed onto the upper surface of pad base 02, the quantity of ball 15, retainer 17 is selected according to actual needs, under the driving effect of drive unit, makes rotating part 01 relative to base 02, rotate to realize the revolute function of pad.

Lower raceway 13 is provided with positive stop lug boss 132, positive stop lug boss 132 is positioned at lower raceway 13 upper surfaces outsides and along the circumferential extension of lower raceway 13, the lower surface outer side of upper raceway 11 can be resisted against on positive stop lug boss 132, guarantee that pad is in turning course, the axial position of rotating part 01 and base 02 is stable, and turning course is more steady.

Upper and

lower raceway

11,13 can be selected 5CrMnMo heated die steel, upper and lower ball grooves 111,131 surfaces form quench hardened case through mid-frequency induction hardening, improve hardness and the wear resistance on upper and lower ball grooves 111,131 surfaces, the quench hardened case 130 on lower ball grooves 131 surfaces as shown in Figure 7.Because upper and lower ball grooves 111,131 surfaces are quench hardened case, quench hardened case hardness is high, toughness is low, and do not quench, region hardness is low, toughness is high, when raceway is subject to ball contact, raceway quench hardened case bulk deformation ，Er Weicui district, because toughness is larger, is similar to spring action and carries out deformation-compensated to roller surface quench-hardened case, therefore the compatibility of deformation ability of roller surface strengthens, and raceway integrated carrying ability is strengthened.

Upper and

lower raceway

11,13 also can be welded in respectively on rotating part 01 and base 02.

The above embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that the common engineers and technicians in related domain make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.

Claims

1. the flexible thrust bearing of a super sized type, it is characterized in that: comprise raceway (11), lower raceway (13), ball (15) and retainer (17), on, lower raceway (11, 13) be ring-type, the lower surface of upper raceway (11) is provided with the upper ball grooves (111) of circumferential extension, the upper surface of lower raceway (13) is provided with the lower ball grooves (131) of circumferential extension, on, lower ball grooves (111, 131) be the curve bath adapting with ball (15), retainer (17) is cylindric, and be respectively equipped with containing groove (171 in retainer (17) both ends of the surface, 172), several balls (15), several retainers (17) are all arranged at, lower raceway (11, 13) between and ball (15), retainer (17) is positioned at, lower ball grooves (111, 131) in, ball (15), retainer (17) interval arranges, the ball (15) of retainer (17) both sides is located at respectively two containing grooves (171, 172) in.

2. the flexible thrust bearing of super sized type as claimed in claim 1, it is characterized in that: described lower raceway (13) is provided with positive stop lug boss (132), positive stop lug boss (132) is positioned at lower raceway (13) upper surface outside and along the circumferential extension of lower raceway (13), the lower surface outer side of described upper raceway (11) can be resisted against on positive stop lug boss (132).

3. the flexible thrust bearing of super sized type as claimed in claim 2, is characterized in that: described upper and lower ball grooves (111,131) surface is quench hardened case.

4. the flexible thrust bearing of super sized type as claimed in claim 3, is characterized in that: described upper and lower raceway is equipped with mounting hole on (11,13).