SU673191A3 - Guide roll - Google Patents

Description

I

The invention can be used in the pulp and paper industry.

A guide shaft is known comprising an internal shaft, a jacket with a hub and a means for generating pressure, which is connected to the hydraulic system 1.

However, when this shaft is operating, it is difficult to adjust the direction and magnitude of the supporting forces.

The purpose of the invention is to facilitate adjustment of the direction of the magnitude of the supporting forces.

This goal is achieved by the fact that the means for creating pressure is installed on the shaft jacket hub and is made in the form of outer and inner support rings with balls located between them, the inner support ring having radial channels connected to the hydraulic system. The outer colpo is located coaxially with the inner shaft, the inner ring is coaxial with the shaft of the shaft.

FIG. 1 shows a guide shaft; LDC) dale11.1p incision; in fig. 2 p of LL FIG. one; | n (1. 3 flexible laloc; fig. 4 -

guiding shaft, variant; in fig. 5 is a section BB of FIG. four.

The guide shaft comprises a jacket 1, which is attached to the rotating inner shaft 2 by a middle portion or near the middle portion. The inner shaft consists of tubular elements 3, end discs 4 and trunnions 5. A hub 6 is attached to the shaft of the shaft, each hub is fitted with an inner ring of the underpinner 7. The outer ring of the bearing is installed inside the means for creating pressure.

Claims (3)

Pressure generating means made up of two support rings; an inner 8 and an outer 9. In the inner ring there are a number of radial holes 10 in which there are hives 11, located at equal distance from one another. The pressurized hydraulic fluid can be injected into the cavity 12, located under the balls, through the openings 13 and 14, which are connected by pipelines 15 to the pump 16. The cavity under each ball is connected by separate pipes and a separate valve 17, which reduces pressure in the pressure pipe 18. Valves 19 provide a free flow of oil in the cavity under the balls, but limit the specified 1P) 1st oil flow in the opposite direction. The balls are mounted in such a way that they come in contact with the outer support ring, which is attached to the housing 20 of the bearing 21 mounted on the trunnion 5. The inner support ring is connected to the bearing housing with a flexible pin 22 (Fig. 3). The gap between the balls and the holes is discharged so that the balls can easily move in the holes, while oil leaks are minimal, which are returned to the hydraulic system through the hole 23 and the pipeline 24. Hydraulic fluid under pressure is injected into the cavity under the balls, which are made the role of the pistons and create radial forces between the outer and inner support rings of the means for creating pressure. If the balls have the same dimensions and are located at the same distance from one another in the means for creating pressure, the resultant force is zero when the pressure applied to each ball has the same value. If the pressure applied to the balls is not the same, there is a force that the internal bearing ring tends to displace with respect to the external support ring, i.e., a force arises that bends the shaft of the shaft. The force caused by the hydraulic pressure is transmitted to the jacket through the bearing 7. If the jacket 1 starts to vibrate, each ball and the hydraulic system located behind the ball, acts as a shock absorber, as the oil that is displaced from the cavity under the balls goes through a tapering section in the valves 19. In this way, effective damping is performed in all directions. The guide shaft can be made as follows. The tubular inner shaft 25 (fitting 4) is rotatably mounted in bearings 26, which are located in the face disks 27. The shaft sleeve 28 is attached to the inner shaft so that they can be rotated in bearings 29, which are located in the end disks 30. The tool for creating W pressure is made in the form of an outer ring, which is an inner ring 31 of the bearing and an inner support ring, made in the form of a plug 32. The plug has a number of radial holes 33 in which the balls 34 move and is rigidly attached to the bearing ring. Orpus 3S. The cavities 36 under the balls are connected to a source of hydraulic pressure through the openings 37 and 38. Such an implementation is advisable, for example, for paper guide rolls that are not connected to the drive means. In order to provide vibration damping and adjustment of the supporting forces in all directions, there must be at least three radial holes located at the same distance from one another. Claim 1. A guide shaft comprising an inner shaft, a jacket with a hub, and a means for creating pressure, connected to a hydraulic system, characterized in that, in order to facilitate adjustment of the direction and magnitude of the supporting forces, the means for creating pressure is installed on the shirt hub shaft and is made in the form of outer and inner support rings with balls located between them, and the inner support ring has radial channels connected to the hydraulic system. 2. The shaft according to claim 1, characterized in that the outer ring is coaxial with the inner shaft. 3. A shaft according to Claim 1, characterized in that the inner ring is coaxial with the shaft shaft. Sources of information taken into account in the examination 1. Patent of England No. 1270043, cl. D 2 B, 1970. 8 21 20 /, / /. Fig.1 F MJ r | Ft-dag-F