BG221Y1 - Bearing assembly for disc harrow - Google Patents

Abstract

The bearing assenbly is used in agricultural machines such asdisc ploughs, tillers and other machinery operating in dustyatmospheres. It ensures reliable and long operation in media ofhigh dust content and humidity at easier technical servicing. Thebearing unit consists of a bearing (1) engaged by a bearing (2)and limitation bushings (3) having supporting walls (9 & 10).Bearing (1) is engaged in the front by the bearing body (5) sidepressed by two bearing caps (4) internally and externally machinedstepping-like so as to engage the bearing body (5) and bearing(1). Between the stepping-like machined external surfaces of thecaps (4) and the supporting walls (9 & 10) there are a sealingwasher (6), revolving washer (7) and supporting washer (11) onwhich a spirng (12) is resting fixed by the supporting walls (9 &10). Spring (12) and supporting washer (11) are engaged andprotected by a connecting piece (13). L-shaped safeguards (15) arefitted by means of connection parts (14) getting across thebearing caps (4) and the bearing body (5). In the upper part ofthe supporting walls (9 & 10) one disc-like component (16) each isfitted and on it one of the sides of the safeguards (16) is lying.2 cliaims, 2 figures(11) 222

Description

The utility model relates to a disk harrow bearing assembly and may find application in mechanical engineering for the design of machines operating in highly dusty environments, in particular for agricultural machinery such as disc plows, milling machines and others operating in dusty environments.

BACKGROUND OF THE INVENTION

It is well known in the art that different machines operate in a highly dusty environment, which makes it difficult to work on separate units, including bearing units.

Many technical solutions are known to protect the bearing assembly from contamination when operating in a contaminated environment.

A disc harrow described in OF No 29 13 064-DE is known, in which a bearing assembly is used including an axle-mounted bearing consisting of an inner and outer ring. The bearing is supported on both sides by restraint bushings and its outer ring is enclosed by a compound bearing body. Elastic seals are located between the bearing body and the outer ring, whose sealing comb rests on the outer surface of the inner ring.

Also known is a disc harrow of the practice shown in FIG. 1, in which a bearing assembly is used, including a shaft-mounted bearing sleeve mounted on a shaft on which a fixed bearing is mounted. The latter is fixed laterally by a restraining sleeve. The bearing is enclosed by a bearing body to which a cap extends laterally, pressed against the bearing and the bearing body by means of a screw connection.

In the lower surfaces of the bearing body and bearing cap, grooves are formed in which radially sealing / sealing / and felt seals are disposed in the direction of the bearing outwards.

The known technical solutions described do not provide sufficiently reliable protection against contamination of the bearing unit, allowing dust to penetrate into the bearing of the bearing, which necessitates frequent shutdowns, inspections and maintenance of the machine.

The technical nature of the utility model

The task of the utility model is to create a bearing assembly that ensures reliable and long-lasting operation in an environment with high dust and humidity in light maintenance.

The problem is solved by a bearing assembly comprising a bearing partially enclosed on both sides, respectively, by a bearing and restraining sleeve, with support walls formed at one end thereof. The bearing is enclosed by the front of the bearing body, pressed laterally by the bearing cap. The bearing assembly thus provided includes sealing elements which contact laterally with the bearing.

Characteristic of the proposed bearing assembly according to the utility model is that the bearing caps are two and are shaped externally and internally so that they consistently top-down the bearing body and the bearing through its inner surface, between the degree-shaped outer surface of the bearing caps and the bearing caps. bearing, respectively bearing and restraining sleeves, are arranged in a direction from the bearing to the bearing walls of the sleeves, the washer, the washer and the washer, on which lies one end of a compression spring, the other the end of which rests on the corresponding support wall of the sleeves, wherein the spring and the support washer are secured by a protective sleeve, and to the connecting elements passing through the upper walls of the bearing caps and the bearing body are fixed fixedly D-shaped guards on one side of which rests on a disc member attached to the upper part of the support wall of the respective sleeve.

According to one embodiment of the bearing assembly, a sealing groove is provided in the sealing washer in which an elastic sealing ring is located.

The proposed bearing assembly has a reliable bearing protection against contamination when operating in environments with high dust or humidity. The bearing is protected by a labyrinth seal formed between the bearing bushing, bearing cap and guard, as well as by a front seal with a sealing washer, pressed in constant force by a cuffed spring. The proposed bearing assembly has a technological and service-friendly construction, which makes it possible to use it in a variety of heavy duty agricultural machines, including high dust levels. The proposed construction also allows for a suitable suspension of the bearing assembly, thereby achieving the correct load on the bearing body.

Description of the attached figures

An exemplary embodiment of the bearing assembly subject to the utility model is presented in detail with the accompanying figures, of which:

Figure 1 is a longitudinal sectional view of a prior art bearing assembly of the technique;

2 is a longitudinal sectional view of a bearing assembly according to the utility model.

Exemplary implementation of the utility model

The description will provide an exemplary embodiment of a bearing assembly, a disc harrow that can be used in attached, hinged or semi-mounted disc harrows, as well as in other agricultural machinery operating in a highly dusty or humid environment.

The bearing assembly consists of a bearing 1 mounted on a stepped bearing bushing 2 and supported in part by the face of a restraining sleeve 3. The bearing 1 is pressed on both sides by two steppedly shaped bearing caps 4, such as the lower inner the extent enclosing bearing 1 and, in the upper position, the enclosing bearing body 5. between the inside and the outside, the sealing washer 6 and the rotating washer 7. There is a shaped groove in the front surface of the sealing washer 6, which houses an elastic annular sealing element 8. In the space between the second externally formed degree of the bearing caps 4 and the bearing caps 4 and 4 and 10, respectively, of the bearing 2 and restrictive sleeve 3, are arranged alternately from the inside to the outer washer 11 and the pressure spring 12, one end of which rests on the supporting washer 11 and the other end rests on the corresponding supporting wall 9,10. The spring 12 and the support washer 11 are covered by a protective sleeve 13, preferably of elastic material.

Through the upper part of the bearing caps 4 and the bearing body 5 pass fasteners 14, for example bolts, through which, on the outside of the two ends of the bearing caps 4, the L-shaped fuses 15 are fixed, one wall of the fuse lying above the disk-shaped element 16, secured in the upper part of the respective support wall 9, 10. a seal 17 is inserted between the inner surface of the upper stage of the bearing caps 4 and the bearing body. At one end of the bearing sleeve 2 there is a shaped groove in which a locking spring n asten 18. The disclosed bearing assembly is secured by a suitably shaped bracket to the disc harrow section. When operating in a highly dusty field environment, the bearing assembly is reliably protected from the labyrinth seal formed between the bearing bushing 2, the bearing cap 4 and the fuse 15. Additionally, the bearing is secured against dust by the friction seal between the fixed mounting washer and the shaft 6 7, which are pressed continuously by the cuff 13 protected by the spring 12. Such construction ensures long-term use of the machine and prolongs the time between separate maintenance operations.

Claims

Claims (2)

1. A disk harness bearing assembly consisting of a bearing partially enclosed on both sides, respectively, of a bearing and restriction sleeve with support walls formed at one end thereof, the bearing being enclosed first by a bearing body pressed laterally by a bearing cap, such that the bearing assembly thus provided has sealing elements in contact sideways with the bearing, characterized in that the bearing caps (4) are two and formed externally and internally in degrees so as to consistently extend from top to bottom the bearing body / 5 / and lag a / 1 / through their inner surface, 5 between which the outer outer surface of the bearing caps / 4 / and the support walls / 9 and 10 / respectively of the bearing bushing / 2 / and the limiting bushing / 3 / are arranged in the direction of the bearing / 1 / to the bearing walls / 9 and 10 / of the bushes / 2 and 3 / sealing washer / 6 /, rotating washer / 7 / and bearing washer / 11 / on which lies one end of the spring / 12 / the other end of which rests on the respective support wall / 9, 10 / of the bushings / 2, 3), and the spring (12) and the washer (11) are enclosed by a protective sleeve (13) and to connecting elements (14) passing through the upper walls of the bearing caps (4) and the bearing body (5). fixed fixed fuses / 15 /, one side of which rests on a disk member / 16 / fixed at the top of the support wall / 9, 10 / of the respective bushing / 2,3 /. Bearing assembly according to claim 1, characterized in that there is a shaped groove in the head of the sealing washer (6) in which an elastic sealing ring (8) is located.