CN217462934U - A Pitching Vertical Shaft Device Based on Combined Bearings - Google Patents

Abstract

The utility model provides a vertical swing type vertical shaft device based on a combined bearing, a chamber is provided between the casing and the vertical shaft, the upper part and the lower part of the chamber are respectively provided with a first self-aligning roller bearing and a second self-aligning roller bearing, It can ensure the concentric verticality of the vertical shaft; a tapered roller bearing is arranged between the first spherical roller bearing and the second spherical roller bearing, which can bear the axial pressure of the vertical shaft; thus avoiding the existing vertical shaft in the bearing steel. After the ball is worn, it will fall down, thereby avoiding the vertical shaft inclination and the inclination of the grinding roller assembly, so as to ensure the normal operation. In addition, the first oil seal, the second oil seal and the third oil seal can effectively prevent dust from being counted into the cavity between the vertical shaft and the housing, which can prolong the service life and reduce the maintenance and replacement cost.

Description

A Pitching Vertical Shaft Device Based on Combined Bearings

technical field

The utility model provides a vertical swing type vertical shaft device based on a combined bearing, which belongs to the technical field of mechanical equipment.

Background technique

At present, in some mechanical processing equipment, there are many grinding roller assemblies and vertical shaft devices. The common type of vertical pendulum grinding roller assembly and the connection device of the plum blossom frame as the vertical shaft device mostly adopt the bearing leakage open mechanism. The disadvantage is: because the vertical swing grinding roller assembly is in use, the swinging range of the grinding roller assembly is small, the rotation range of the bearing is limited, and the dust enters the bearing, and the local bearing wears quickly. After the upper bearing steel ball is worn, the vertical shaft device falls, causing the gap between the upper and lower bearing rings of the lower bearing to increase, and the lower bearing steel ball falls, so that the vertical shaft tilts and causes the grinding roller assembly to tilt, and finally the equipment cannot be used normally.

Utility model content

In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a vertical pendulum type vertical shaft device based on a combined bearing, so as to prolong the service life and reduce the maintenance and replacement cost.

In order to achieve the above object, the present invention is realized through the following technical solutions:

A vertical swing type vertical shaft device based on a combined bearing, comprising a vertical shaft, the vertical shaft is sleeved and mounted on a cylindrical roller through a first self-aligning roller bearing, a tapered roller bearing and a second self-aligning roller bearing arranged in sequence from top to bottom. The outer casing of the vertical shaft above the first self-aligning roller bearing is provided with a cylindrical upper pressure cover, the upper pressure cover is connected to the upper end of the casing, and the outer casing of the vertical shaft under the second self-aligning roller bearing is provided with a cylindrical lower pressure cover , the lower gland is connected to the lower end of the casing; an annular first oil seal is installed between the upper gland and the vertical shaft, and an annular second oil seal is installed between the casing and the vertical shaft, and the second oil seal is located between the tapered roller bearing and the second spherical roller bearing. Between the lower gland and the vertical shaft, an annular third oil seal is installed; a first oil injection hole and a second oil injection hole are opened on the side wall of the casing, the first oil injection hole is located at the first spherical roller bearing, and the second oil injection hole is located at Between the tapered roller bearing and the second spherical roller bearing.

Preferably, an annular spacer sleeve is arranged on the vertical shaft outer sleeve between the tapered roller bearing and the second spherical roller bearing, an annular bulky cover is arranged on the outer sleeve of the spacer sleeve, and the second oil seal is installed between the spacer sleeve and the smeared cover.

Preferably, both the first oil injection hole and the second oil injection hole are provided with sealing bolts.

Preferably, the upper gland is connected to the upper end of the casing through bolts, and the lower gland is connected to the lower end of the casing through bolts.

Preferably, an annular upper sealing cover is connected above the upper pressing cover, and an annular lower sealing cover is connected below the lower pressing cover.

Preferably, seals are provided between the upper gland and the upper sealing cover and between the lower gland and the lower sealing cover.

Preferably, the seal is a labyrinth seal.

Preferably, the labyrinth seal includes a spiral groove and a spiral protrusion, the spiral groove is arranged on one of the upper gland and the upper sealing cover, and on one of the lower gland and the lower sealing cover, and the screw The screw-type protrusion is arranged on the other of the upper pressing cover and the upper sealing cover, and on the other of the lower pressing cover and the lower sealing cover, and the screw-type protrusion is embedded and connected in the screw-type groove.

Preferably, an upper shaft sleeve is provided on the vertical shaft casing above the upper sealing cover, and a lower shaft sleeve is provided on the vertical shaft casing below the lower sealing cover.

Preferably, the housing is mounted on the bracket.

The vertical swing type vertical shaft device based on the combined bearing of the present invention has at least the following beneficial effects:

1. The vertical swing type vertical shaft device based on the combined bearing of the present utility model, two spherical roller bearings are arranged in the chamber between the outer casing and the vertical shaft, which can ensure the concentric verticality of the vertical shaft; A tapered roller bearing is arranged between them, which can bear the axial pressure of the vertical shaft; thus, the vertical shaft of the prior art is prevented from falling after the bearing steel ball is worn, thereby avoiding the vertical shaft inclination and the inclination of the grinding roller assembly, so as to ensure the normal operation and prolong the Long service life, reducing maintenance and replacement costs; and multiple oil seals can effectively prevent dust from being included in the vertical shaft device cavity, further prolonging the service life and further reducing maintenance and replacement costs.

2. The vertical swing type vertical shaft device based on the combined bearing of the present invention can hold the grinding roller assembly on the upper and lower shaft sleeves of the vertical shaft through the glands on the two transverse arms. Direct wear; the upper and lower shaft sleeves are pressed on the upper and lower sealing covers, and the upper and lower sealing covers and the upper and lower glands can be sealed with a return palace, combined with the internal oil seal of the gland to form a double sealing structure, which can more effectively prevent dust from entering the cavity of the vertical shaft device , to extend the service life and reduce maintenance costs.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural diagram of a vertical swing type vertical shaft device based on a combined bearing according to an embodiment of the present invention.

In the figure: 1 is the vertical shaft, 2 is the first spherical roller bearing, 3 is the tapered roller bearing, 4 is the second spherical roller bearing, 5 is the shell, 6 is the upper gland, 7 is the lower gland, 8 is the first oil seal, 9 is the second oil seal, 10 is the third oil seal, 11 is the first oil injection hole, 12 is the second oil injection hole, 13 is the spacer, 14 is the stuffy cover, 15 is the upper sealing cover, 16 is the For the lower sealing cover, 17 is the upper shaft sleeve, 18 is the lower shaft sleeve, and 19 is the bracket.

Detailed ways

In order to make the technical means, creation features, achievement goals and effects of the present invention easy to understand and understand, the present invention will be further described below with reference to the specific embodiments.

Example

As shown in Figure 1, a vertical swing type vertical shaft device based on combined bearing includes a vertical shaft 1, and the vertical shaft 1 passes through a first spherical roller bearing 2, a tapered roller bearing 3 and a second adjustable roller bearing arranged in sequence from top to bottom. The spherical roller bearing 4 is sleeved and installed in the cylindrical shell 5; the outer shell of the vertical shaft 1 above the first spherical roller bearing 2 is provided with a cylindrical upper pressure cover 6, and the upper pressure cover 6 is connected to the upper end of the outer shell 5, and the second The outer casing of the vertical shaft 1 below the spherical roller bearing 4 is provided with a cylindrical lower pressure cover 7, and the lower pressure cover 7 is connected to the lower end of the outer casing 5; an annular first oil seal 8 is installed between the upper pressure cover 6 and the vertical shaft 1, and the outer casing 5 is connected to the lower end of the outer casing 5. An annular second oil seal 9 is installed between the vertical shaft 1, the second oil seal 9 is located between the tapered roller bearing 3 and the second spherical roller bearing 4, and an annular third oil seal 10 is installed between the lower cover 7 and the vertical shaft 1 ; The side wall of the casing 5 is provided with a first oil injection hole 11 and a second oil injection hole 12, the first oil injection hole 11 is located at the first spherical roller bearing 2, and the second oil injection hole 12 is located in the tapered roller bearing 3 and the second self-aligning roller bearing. Between the roller bearings 4.

The vertical swing type vertical shaft device based on the combined bearing has a chamber between the casing 5 and the vertical shaft 1, and the upper and lower parts of the chamber are respectively provided with a first spherical roller bearing 2 and a second spherical roller bearing 4, which can Ensure the concentric verticality of the vertical shaft 1; set the tapered roller bearing 3 between the first spherical roller bearing 2 and the second spherical roller bearing 4, which can bear the axial pressure of the vertical shaft; thus avoiding the vertical shaft of the prior art After the bearing steel ball is worn out, it will fall down, thereby avoiding the vertical shaft inclination and the inclination of the grinding roller assembly, so as to ensure the normal operation. In addition, the first oil seal 8, the second oil seal 9 and the third oil seal 10 can effectively prevent dust from being counted into the cavity between the vertical shaft 1 and the housing 5, and each oil seal can be a high temperature resistant frame oil seal.

An annular spacer 13 can be sleeved outside the vertical shaft 1 between the tapered roller bearing 3 and the second spherical roller bearing 4, an annular bulky cover 14 can be sleeved outside the spacer sleeve 13, and the second oil seal 9 can be installed in the spacer. Between the sleeve 13 and the stuffy cover 14. Both the first oil injection hole 11 and the second oil injection hole 12 may be provided with sealing bolts. The upper gland 6 can be connected to the upper end of the housing 5 by bolts, and the lower gland 7 can be connected to the lower end of the housing 5 by bolts.

An upper shaft sleeve 17 can be sleeved outside the vertical shaft 1 above the upper sealing cover 15 , and a lower shaft sleeve 18 can be sleeved outside the vertical shaft 1 below the lower sealing cover 16 . The housing 5 can be mounted on a bracket 19 . The bracket 19 can be provided with two transverse arms. The grinding roller assembly can be installed on the upper sleeve 17 and the lower sleeve 18 of the vertical shaft 1 through the upper pressing cover 6 and the lower pressing cover 7 on the two transverse arms, respectively. It is to reduce the direct wear of the upper gland 6 and the lower gland 7 on the vertical shaft 1 .

An annular upper sealing cover 15 can be connected to the upper surface of the upper pressing cover 6 , and an annular lower sealing cover 16 can be connected to the lower surface of the lower pressing cover 7 . The upper shaft sleeve 17 and the lower shaft sleeve 18 can be press-fitted and fixed on the upper sealing cover 15 and the lower sealing cover 16 respectively.

Seals may be provided between the upper pressing cover 6 and the upper sealing cover 15 and between the lower pressing cover 7 and the lower sealing cover 16 . The seal may be a labyrinth seal. The labyrinth seal may include a spiral groove and a spiral protrusion, and the spiral groove is provided on one of the upper gland 6 and the upper sealing cover 15, and on one of the lower gland 7 and the lower sealing cover 16. , the spiral protrusion is arranged on the other of the upper gland 6 and the upper sealing cover 15, and the other one of the lower gland 7 and the lower sealing cover 16, and the screw protrusion is embedded and connected in the spiral groove.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and does not deviate from the present invention. The present invention can be implemented in other specific forms under the condition of the spirit or basic features. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. A vertical swing type vertical shaft device based on a combined bearing, comprising a vertical shaft, characterized in that the vertical shaft passes through the first self-aligning roller bearing, the tapered roller bearing and the second self-aligning roller which are arranged in sequence from top to bottom. The sub-bearing is sleeved and installed in the cylindrical casing; the vertical shaft casing above the first spherical roller bearing is provided with a cylindrical upper pressing cover, the upper pressing cover is connected to the upper end of the casing, and the first The outer casing of the vertical shaft below the two spherical roller bearings is provided with a cylindrical lower pressure cover, and the lower pressure cover is connected to the lower end of the outer casing; an annular first oil seal is installed between the upper pressure cover and the vertical shaft, An annular second oil seal is installed between the outer casing and the vertical shaft, the second oil seal is located between the tapered roller bearing and the second spherical roller bearing, and the lower cover is connected to the vertical shaft. An annular third oil seal is installed between them; a first oil injection hole and a second oil injection hole are opened on the side wall of the casing, the first oil injection hole is located at the first spherical roller bearing, and the second oil injection hole is located at the between the tapered roller bearing and the second spherical roller bearing. 2 . The vertical swing type vertical shaft device based on the combined bearing according to claim 1 , wherein an annular spacer is provided on the vertical shaft outer sleeve between the tapered roller bearing and the second spherical roller bearing. 3 . The spacer sleeve is provided with an annular bulky cover, and the second oil seal is installed between the spacer sleeve and the bulky cover. 3 . The vertical swing type vertical shaft device based on the combined bearing according to claim 1 , wherein a sealing bolt is provided in the first oil injection hole and the second oil injection hole. 4 . 4 . The vertical swing type vertical shaft device based on combined bearing according to claim 1 , wherein the upper gland is connected to the upper end of the casing by bolts, and the lower gland is connected to the lower end of the casing through bolts. 5 . 5 . The vertical swing type vertical shaft device based on combined bearing according to claim 1 , wherein the upper pressing cover is connected with an annular upper sealing cover, and the lower pressing cover is connected with an annular lower sealing cover. 6 . 6 . The vertical swing type vertical shaft device based on combined bearing according to claim 5 , characterized in that, between the upper gland and the upper seal cover, and between the lower gland and the lower seal cover. 7 . All seals are provided. 7 . The vertical pendulum device based on combined bearing according to claim 6 , wherein the seal is a labyrinth seal. 8 . 8 . The vertical pendulum shaft device based on combined bearing according to claim 7 , wherein the labyrinth seal comprises a helical groove and a helical protrusion, and the helical groove is provided in the on one of the upper pressing cover and the upper sealing cover, and on one of the lower pressing cover and the lower sealing cover, the spiral protrusion is arranged on the upper pressing cover and the upper sealing cover The other one is on top, and the other one of the lower pressing cover and the lower sealing cover is on the other one, and the spiral protrusion is embedded and connected in the spiral groove. 9 . The vertical pendulum type vertical shaft device based on combined bearing according to claim 5 , wherein the vertical shaft casing above the upper sealing cover is provided with an upper shaft sleeve, and the vertical shaft casing under the lower sealing cover is provided with an upper shaft sleeve. 10 . Set the bushing. 10 . The vertical swing type vertical shaft device based on combined bearing according to any one of claims 1 to 9 , wherein the housing is mounted on a bracket. 11 .

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