CN103398092A

CN103398092A - Sliding bearing hinging device with floating seal

Info

Publication number: CN103398092A
Application number: CN2013103755831A
Authority: CN
Inventors: 向上升; 冯豪; 杜杏; 蒋绍军; 沈才华; 施朝坤; 李延军
Original assignee: Guangxi Liugong Machinery Co Ltd
Current assignee: Guangxi Liugong Machinery Co Ltd
Priority date: 2013-08-27
Filing date: 2013-08-27
Publication date: 2013-11-20

Abstract

The invention discloses a sliding bearing hinging device with a floating seal, relating to the technical field of manufacturing of engineering machinery equipment. The sliding bearing hinging device comprises a movable arm and a bucket, wherein the movable arm is hinged with the bucket by a hollow hinging shaft; the two ends of the hinging shaft are respectively sleeved with a left fixed seat and a right fixed seat which are connected with the bucket; the middle section of the hinging shaft is sleeved with a shaft sleeve; the shaft sleeve is externally sleeved with a floating seat which is fixedly connected with the movable arm; grooves in the inner sides of the two ends of the floating seats and grooves in the inner sides of the left fixed seat and the right fixed seat which are close to the two ends of the floating seat are provided with floating sealing rings mounted on a floating ring. According to the sliding bearing hinging device disclosed by the invention, the problems of a sliding hinging mechanism of engineering machinery that the lubrication is not in place, small particulate matters easily enter the bearing to lose efficiency, the lubrication maintenance period of the bearing is short so that the equipment maintenance cost is high can be solved.

Description

Sliding bearing articulated mounting with floating seal

Technical field

The present invention relates to engineering mechanical device manufacturing technology field, especially a kind of articulated mechanism for connecting between swing arm on engineering machinery and scraper bowl.

Background technique

Sliding bearing articulated mechanism connecting mode is adopted in connection in engineering machinery between swing arm and scraper bowl usually, and articulated mechanism is generally by axle, axle sleeve (bearing shell), and dust ring forms, and adopts the lubricating system of lubricating grease.

The engineering machinery operating mode is abominable, and the work loads skewness easily causes the axle local pressure, adds that the mobile property of lubricating grease is poor, lubricates and is difficult to put in place, easily causes axle adhesive wear to lose efficacy.

On the other hand, swing arm and scraper bowl size are large, and accuracy of manufacturing is generally not high, and during assembling, swing arm and scraper bowl side clearance are the 5-10 millimeter, and dust ring is equipped with at the place, side clearance; Due to the non-rigid body of dust ring, scraper bowl axial float once in a while is large, but dust or small stone grain slave arm or scraper bowl side enter axle and axle sleeve, easily causes the axle abrasive wear to lose efficacy.

The time lag of construction machinery product grease up is generally 50-100 hours, when the time lag in the rugged environment such as cement or sposh, shortens to 8 hours, and the bearing lubrication maintenance period is too short, and maintenance cost is high.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of sliding bearing articulated mounting with floating seal, and it can solve lubricated not in place, the bearing of the slide hinged mechanism of engineering machinery and easily advance small particle and cause bearing failure and the short high problem of cost of equipment maintenance that causes of bearing lubrication maintenance period.

In order to address the above problem, technological scheme of the present invention is: this sliding bearing articulated mounting with floating seal includes swing arm and scraper bowl; Described swing arm is hinged by hinge and the described scraper bowl of hollow; Described hinge two ends are respectively installed with left fixed base and the right fixed base that is connected with described scraper bowl, described hinge stage casing is set with axle sleeve, be set with the floating seat that is fixedly connected with described swing arm outside described axle sleeve, inboard groove and the described left fixed base adjacent with described floating seat two ends and the inboard groove of right fixed base all are equipped with the floating seal ring that is arranged on floating ring at described floating seat two ends.

In technique scheme, more specifically scheme can also be: between described scraper bowl and described left fixed base and described right fixed base respectively by bolt with adjust pad and be fixedly connected with.

Further: be respectively arranged with the static sealing circle between described hinge and left fixed base and right fixed base.

Further: described hinge is connected an end with right fixed base and is provided with boss, and described boss matches with the keyway on being arranged on right fixed base.

Further: described swing arm is fixedly connected with floating seat by clamping bolt.

Further: described swing arm and floating seat are fixedly connected by welding.

Owing to adopting technique scheme, the present invention has following beneficial effect:

1, sliding bearing liquid lubrication of the present invention is effective, and floating seal and static sealing circle good dustproof effect, reduced adhesive wear and the abrasive wear of bearing, improves the reliability of plain bearing arrangement work;

2, maintenance period of the present invention reaches 3000-5000 hour, has improved the utilization ratio of equipment, has reduced maintenance cost, thereby alleviates user's economic burden;

3, fixed base of the present invention and floating seat and swing arm or scraper bowl adopt fixed or the assembling connecting mode, have avoided the integral body processing of swing arm or scraper bowl, have reduced the process equipment bed dimension, have simplified technique, have reduced manufacture cost;

4, fixed base of the present invention can be regulated side when assembling, the required precision in the time of can reducing the part manufacturing, thus can reduce manufacture cost.

Description of drawings

Fig. 1 is the embodiment of the present invention 1 structural representation.

Fig. 2 is A-A sectional view in Fig. 1.

Fig. 3 is the embodiment of the present invention 2 structural representations.

Fig. 4 is B-B sectional view in Fig. 3.

Fig. 5 is the partial enlarged view at C place in Fig. 1 and Fig. 3.

Component title and sequence number in figure:

Scraper bowl 1; Adjust pad 2; Left fixed base 3; Bolt 4; Packing ring 5; Turnbuckle 6; Floating seal ring 7; Floating ring 8; Floating seat 9; Axle sleeve 10; Static sealing circle 11; Nut 12; Hinge 13; Right fixed base 14; Swing arm 15; Clamping bolt 16; Oil closed cavity 17.

Embodiment

The present invention is further described below in conjunction with drawings and Examples:

Embodiment 1:

The sliding bearing articulated mounting with floating seal of Fig. 1, Fig. 2, Fig. 5, the frictional force that the pretightening force that swing arm 15 applies by clamping bolt 16 produces clamps floating seat 9, and the inboard groove at floating seat 9 two ends all is equipped with floating seal ring 7 and floating ring 8; The inboard groove of left fixed base 3 and right fixed base 14 also all is equipped with floating seal ring 7 and floating ring 8; Left fixed base 3 and right fixed base 14 are assemblied on scraper bowl 1 by bolt 4 respectively; Respectively by adjusting the pad 2 contact with scraper bowl 1 separately, regulate the contact between the floating ring 8 that has assembled on the floating ring 8 that assembled on left fixed base 3 and right fixed base 14 and floating seat 9; Namely the contact between floating ring is that S is generally the 3-5 millimeter by adjusting left fixed base 3 and right fixed base 14 respectively and apart from S, the realizing of 9 of floating seats in twos.

Its contact end face forms the end face motive sealing under two contact ring 8 contact appropraite conditions, and four floating seal rings of the present embodiment 7 form static seal with the contact area of floating ring 8, floating seat 9, left fixed base 3, right fixed base 14; Be respectively arranged with static sealing circle 11 between hinge 13 and left fixed base 3 and right fixed base 14; Static sealing circle 11 forms static seal with the contact area of hinge 13, left fixed base 3, right fixed base 14.

Axle sleeve 10 and hinge 13 relative rotary motion, the keyway of the boss on hinge 13 and right fixed base 14 coordinates and stops that axle is relative to be rotated, certain adjustment amount is axially being arranged to meet the not high requirement of assembly precision, turnbuckle 6 can be adjacent to left fixed base 3 end faces hinge 13, prevents the axle loose or dislocation.

Left fixed base 3 and right fixed base 14 is suitable with apart from S1, arranging of axle sleeve 10 minimal-contact positions respectively, scraper bowl 1 and swing arm 15 shifting amount are suitable, do not affect while guaranteeing the unbalance loading operating mode that floating seal ring 7 is squeezed excessively and damage inactivation makes left fixed base 3, right fixed base 14 seldom contact or not contact with the end face of axle sleeve 10 under nominal situation.

In the present embodiment, the sliding bearing mechanism of floating seal has good lubrication effect, improves the reliability that axle and axle sleeve coordinate, and extends maintenance period; Left fixed base 3, right fixed base 14, floating seat 9 are the assembling mode, adjust simultaneously pad 2 and have reduced axial required precision, have simplified manufacturing process and process equipment.

Embodiment 2:

As Fig. 3, shown in Figure 4 and Figure 5, the present embodiment is compared with embodiment 1, and its difference is that floating seat 9 directly is welded on swing arm 15; Hinge 13 directly by on be tightly packed in packing ring 5 and the nut 12 of hinge 13 ends, thereby turnbuckle 6 is close together hinge 13 and left fixed base 3, the frictional force restriction hinge 13 that pretightening force produces is with axle sleeve 10 rotations, and other structural principles are identical with embodiment 1.

Claims

1. the sliding bearing articulated mounting with floating seal, include swing arm (15) and scraper bowl (1), it is characterized in that: described swing arm (15) is hinged with described scraper bowl (1) by the hinge (13) of hollow; Described hinge (13) two ends are respectively installed with left fixed base (3) and the right fixed base (14) that is connected with described scraper bowl (1), described hinge (13) stage casing is set with axle sleeve (10), be set with the floating seat (9) that is fixedly connected with described swing arm (15) outside described axle sleeve (10), inboard groove and the described left fixed base (3) adjacent with described floating seat (9) two ends and the inboard groove of right fixed base (14) all are equipped with the floating seal ring (7) that is arranged on floating ring (8) at described floating seat (9) two ends.

2. according to claim 1 the sliding bearing articulated mounting with floating seal is characterized in that: between described scraper bowl (1) and described left fixed base (3) and described right fixed base (14) respectively by bolt (4) with adjust pad (2) and be fixedly connected with.

3. according to claim 1 and 2 the sliding bearing articulated mounting with floating seal, is characterized in that: be respectively arranged with static sealing circle (11) between described hinge (13) and left fixed base (3) and right fixed base (14).

4. according to claim 3 the sliding bearing articulated mounting with floating seal, it is characterized in that: described hinge (13) is connected an end with right fixed base (14) and is provided with boss, and described boss matches with the keyway on being arranged on right fixed base (14).

5. according to claim 3 the sliding bearing articulated mounting with floating seal, it is characterized in that: described swing arm (15) is fixedly connected with floating seat (9) by clamping bolt (16).

6. according to claim 3 the sliding bearing articulated mounting with floating seal, it is characterized in that: described swing arm (15) is fixedly connected by welding with floating seat (9).

7. according to claim 4 the sliding bearing articulated mounting with floating seal, it is characterized in that: described swing arm (15) is fixedly connected with floating seat (9) by clamping bolt (16).

8. according to claim 4 the sliding bearing articulated mounting with floating seal, it is characterized in that: described swing arm (15) is fixedly connected by welding with floating seat (9).