JPH02225885A - Front-chamber protection body of slide ring packing - Google Patents

Abstract

PURPOSE: To lengthen the useful period of a slide ring packing by filling a clearance range between the slide ring packing and the periphery of a machine with paste-like lubricant and sealing it in relation to the outside by a friction ring supported in it in the floating state. CONSTITUTION: In slide ring packing 1, 2, oil 6 is supplied through a conduit 5 between a fixed shaft 3 and a roller 4, and a clearance starts from the packings 1, 2 and is communicated with the outside in order to separate the fixed shaft and the roller 4. In this case, foreign fine particulate enter in the direction of the packings 1, 2 and break an oil films on the front surfaces of side rings 7, 8, the slide rings are broken, the oil 6 for sliding a bearing of the roller 4 is eliminated by the clearance, and the bearing is broken. This clearance range is filled with paste-like lubricant, lubricant is sealed through a friction ring 10 supported to the outside in the floating state and completely embedded in the lubricant, and a problem is resolved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a front chamber protector that protects a sliding ring gasket of a rotary traveling mechanism of a construction machine against foreign objects that enter through a gap.

[Conventional technology]

The running mechanism of construction machinery can get very dirty depending on how it is used.When the running motion of the work equipment, especially rotational motion, is under high pressure, particles of dirt can get into the storage compartments and gaps that are difficult to obtain due to the structure. I get pushed into it. As a result, the sliding ring seals installed in the guide wheels, the running rollers and the carrier rollers are put at considerable risk, so that these parts fail after a very short service life.

If we succeed in preventing the foreign matter from entering or spreading to the sliding ring seal, this condition can be significantly improved; however, if we are unsuccessful, the sliding ring seal between the rotating parts may be destroyed. , this causes a spillage of the oil used for lubrication purposes, with irreversible consequences.

[Problem to be solved by the invention]

The object of the invention is to prevent solid objects such as sand, minerals, ± and other similar substances from entering the sealing rings and running paths of the sliding ring packing, in order to achieve a high service life of the sliding ring packing. The goal is to prevent this from happening. At the same time, it is ensured that even if the originally small dimensional differences in gaps and openings increase, for example due to wear or elastic deformation, the above objectives are not equally affected.

[Means for solving the problem] The above problem can be solved by a wear system in which the gap space between the sliding ring packing and the surroundings of the machine is filled with a paste-like lubricant and is supported floating therein. This problem is solved by being sealed from the outside by a ring.

Effect: The wear ring is then fixed in its position by means of a retaining ring or in a form-locking manner in a manner known per se.

The wear ring must be slightly more resistant to wear than the wall part in order to prevent penetration into the wall part surrounding the ring.

It is further advantageous to arrange this ring displaceably within the gap space so that when the width of the resulting gap space changes, the position of the retaining ring can be adapted to this change.

Furthermore, the use of the interstitial space between the sliding ring seal and the machine surroundings by the front chamber protector makes it possible, for example, if a part of the running mechanism is damaged, to later machine such an additional seal in this part. You get the advantage of having one. Along with this, repair or remodeling becomes possible.

The amount of lubricant is such that the wear ring is surrounded by it, so that wear and intrusion by fine dust are blocked by the lubricant. In that case, such foreign objects do not penetrate under the sealing ring and destroy it, so that the sealing ring of the lubricating oil chamber is not endangered.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

In FIG. 1, a support roller, known per se, of a running mechanism of a construction machine is shown. Sliding ring padskin (1
, 2) are supplied with an oil flow (6) via a conduit (5) between the fixed shaft (3) and the roller (4).

To separate the fixed shaft (3) and the movable roller (4), starting from the sliding ring seal (I2),
The gap extends outward to the outside world. Due to this gap, when the construction machine is actually used for work, fine foreign particles enter in the direction of the sliding ring packing (1, 2), and these particles form an oil film on the surface of the sliding ring (7, 8). and thus also the sliding rings (7, 8) themselves. Oil flow for lubricating the bearings of the support rollers (6)
is lost through the gap. This will destroy the bearing.

According to the invention, this is avoided by filling the interstitial space (9) and the interstitial space with pasty lubricant and sealing the lubricant to the outside via the wear ring (10).

The latter is fixed in its position by means of a retaining ring (11) in a manner known per se, as shown. FIG. 2 shows a similar support roller, in which the function of adapting the wear ring is indicated by a dished ring (12). When this supporting roller is initially in the position shown, the wear material settles down in the interstitial space and
This ensures that this airspace is sealed. Even if the interstitial space changes, for example due to wear, such a dish-shaped ring can adapt to the function of a wear ring by displacement.

The wear ring (10) illustrated in FIG. 1 is not only floatingly supported, but also completely embedded in the lubricant. The countersunk ring (12) shown in FIG. 2, on the other hand, merely has a floating bearing.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a support roller of a traveling mechanism of a construction machine, and FIG. 2 is a longitudinal sectional view of a support roller of a traveling mechanism of a construction machine having a dish-shaped ring. Reference numerals in the figure 1.2...Sliding ring packing 3,...
・・・・Shaft 4・・・・・・・・・・O-Lar− 5・・・・・・・・・・・・Pipe 6・・・・・・・・・・Oil Ryube 7.8...
・・Sliding ring 9・・・・・・・・・Gap space

Claims (5)

[Claims] (1) In the front chamber protector that protects the sliding ring packing of the rotary traveling mechanism of construction machinery from foreign objects that enter through the gap, the gap space between the sliding ring packing (1, 2) and the surroundings of the machine ( 9) is sealed from the outside by a wear ring (10) filled with a pasty lubricant and supported in suspension therein. . (2) The front chamber protector according to claim (1), characterized in that the wear ring (10) is fixed in the position of the retaining ring by a retaining ring (11). (3) Claim (1) characterized in that the wear ring (10) is fixed in its position by means of a one-piece formation.
Front chamber protector as described in section. (4) The vestibule protector according to claim 1, characterized in that the wear ring (10) has a lower wear resistance than the wall portion surrounding the wear ring. 5. Front chamber protection according to claim 1, characterized in that the wear ring (10) is arranged to be easily displaced into the interstitial space with respect to the cross-sectional profile of the space.