JP4919004B2 - Horizontal shaft type plain bearing device - Google Patents

Description

  The present invention relates to a horizontal shaft type sliding bearing device, and more particularly to a horizontal shaft type sliding bearing device in which a bearing is lubricated with lubricating oil supplied from a forced oil supply device.

A conventional horizontal shaft type plain bearing device will be described with reference to FIGS.
6 is a front sectional view of a conventional plain bearing, and FIG. 7 is a side sectional view taken along the line IV-IV in FIG. The forced oiling device is omitted.

  As shown in FIGS. 6 and 7, in the conventional horizontal shaft type sliding bearing device, lubricating oil is supplied to the sliding bearing 2 supported by the bearing housing 1 between the shaft 3 penetrating the bearing housing 1. In order to form an oil film, the oil supply hole 2a is vertically penetrated. The oil supply hole 2a is connected to an oil supply hole 1a penetrating the bearing housing 1, and the oil supply hole 1a is connected to an oil supply pipe 4 extended from a forced oil supply device (not shown). Further, the sliding bearing 2 is provided with oil drain holes 2b extending vertically. The lubricating oil is discharged from the oil drain hole 2 b to become the drained oil 5 and remains at the bottom of the bearing housing 1 to become the residual oil 6.

An oil drain pipe 7 is connected to the bottom of the bearing housing 1, and this oil drain pipe 7 is connected to an oil drain system of a forced oil supply device (not shown), and the residual oil 6 is discharged to a forced oil supply device (not shown). In addition, oil drains 9 and 10 for preventing oil vapor and oil droplets 8 generated inside the bearing housing 1 from leaking to the outside of the bearing housing 1 are installed at locations where the shaft 3 of the bearing housing 1 passes. (See Patent Document 1).
Japanese Patent Laid-Open No. 7-123627

However, in the conventional horizontal shaft type plain bearing device having the above-described configuration, when a part of the drainage oil 5 is discharged from the drainage hole 2b provided in the bearing 2, it is in a state of being ejected at the outlet of the drainage hole 2b. The oil vapor and oil droplets 8 are scattered. Further, when the drained oil 5 is dropped on the surface of the residual oil 6, it is scattered to generate oil vapor and oil droplets 8. Since oil drains 9 and 10 for preventing such oil vapor and oil droplets 8 from leaking to the outside of the bearing housing 1 are installed, the axial length of the bearing housing 1 is increased, and the bearing housing 1 There is a disadvantage that the outer shape increases.
Furthermore, the oil drains 9 and 10 need to be installed in the bearing housing 1 so as to maintain a minute gap with the shaft 1 and there is a disadvantage that it takes time for adjustment during assembly.

  The present invention has been made in view of the above circumstances, and its problem is a horizontal axis that prevents oil vapor and oil droplets generated inside the bearing box and prevents oil leakage without increasing the outer shape. It is in providing a type | mold slide bearing apparatus.

In order to achieve the above object, according to the first aspect of the present invention, a bearing connected to a forced oil supply device is supported by a bearing box, and the bearing is lubricated with lubricating oil supplied from the forced oil supply device. the lubricating oil of the oil vapor and Aburashizukujo Ru is discharged from the oil discharge hole closure as residual oil in the bottom of the bearing housing, discharge with oil discharge tube connected to the bottom of the bearing housing to the discharge oil system of the forced lubrication device In a horizontal shaft type sliding bearing device that oils,
An oil discharge guide pipe for guiding the oil to the residual oil is connected to the oil discharge hole of the bearing in a vertical direction so that the lubricating oil discharged from the oil discharge hole is not scattered.

According to a second aspect of the present invention, a bearing connected to a forced oil supply device is supported by a bearing box, the bearing is lubricated with the lubricating oil supplied from the forced oil supply device, and discharged from an oil drain hole of the bearing. A horizontal shaft type sliding bearing device that retains oil vapor and oil-drop-like lubricating oil as residual oil at the bottom of the bearing box, and drains oil to the drainage system of the forced oiling device through an oil drain pipe connected to the bottom of the bearing box In
The oil discharge hole of the bearing, said the cover to induce the up residual oil so as not to scatter the lubricating oil vertically discharged from the oil discharge hole, and is characterized in that provided within the bearing housing.

  According to the present invention, it is possible to provide a horizontal shaft type sliding bearing device that prevents oil vapor and oil droplets generated inside the bearing box, does not increase the outer shape, and is easy to assemble.

Hereinafter, the best embodiment of the present invention will be described with reference to the drawings.
1 is a front sectional view of a horizontal shaft type plain bearing device according to a first embodiment of the present invention, FIG. 2 is a side sectional view taken along the line II in FIG. 1, and FIG. 3 is II in FIG. It is a figure which shows an example of the cross-sectional shape of the induction | guidance | derivation pipe | tube 11 by the principal part arrow sectional drawing in alignment with -II line. The same parts as those in FIG. 6 and FIG.

  The horizontal shaft type plain bearing device of the present embodiment is different from the conventional horizontal shaft type plain bearing device shown in FIGS. 6 and 7 in that the oil drain hole 2b of the bearing in the bearing box to the residual oil 6 are arranged. This is the point connected by the oil drainage guide pipe 11 and the other components are the same, so the same components will be described with the same reference numerals.

Next, the operation of this embodiment will be described.
Lubricating oil supplied from the oil supply pipe 4 passes through the oil supply hole 1 a of the bearing housing 1 and the oil supply hole 2 a of the bearing 2, and rotates around the upper half of the shaft 3 due to the rotation of the shaft 3. To form an oil film, and the rest is discharged as oil 5 from the oil drain hole 2 b of the bearing 2. Since the drain oil 5 is pressurized by the rotation of the shaft 3, it is ejected at the outlet of the oil drain hole 2 b, the oil vapor and the oil droplets 8 are scattered, and the drain oil 5 collides with the surface of the residual oil 6. Similarly, oil vapor and oil droplets 8 are scattered.

  However, since the oil discharge hole 2b and the surface of the residual oil 6 are connected by the oil discharge guide pipe 11, the scattered oil vapor and the oil droplets 8 do not diffuse and adhere to the inside of the bearing box 1, The residual oil 6 is discharged from the oil drain pipe 7.

  Therefore, in the present embodiment, it is possible to provide a horizontal shaft type sliding bearing device that prevents the generation of oil vapor and oil droplets inside the bearing box, does not increase the outer shape, and is easy to assemble.

FIG. 4 is a side sectional view of a horizontal shaft type slide bearing device according to a second embodiment of the present invention, and FIG. 5 is a sectional view taken along the line III-III in FIG. FIG.
The configuration in which the present embodiment is different from the conventional example of FIG. 7 is that the oil drainage hole 2b of the bearing in the bearing box to the residual oil 6 are covered with the cover 12, and the other configurations are the same, so the same. Components will be described with the same reference numerals.

Next, the operation of this embodiment will be described.
The lubricating oil supplied from the oil supply pipe 4 passes through the oil supply hole 1 a of the bearing 1 and the oil supply hole 2 a of the bearing 2, and rotates around the upper half of the shaft 1 by the rotation of the shaft 1, and a part thereof is the lower half of the shaft 1. To form an oil film, and the rest is discharged as oil 5 from the oil drain hole 2 b of the bearing 2. Since the drain oil 5 is pressurized by the rotation of the shaft 1, it is ejected at the outlet of the oil drain hole 2 b, the oil vapor and the oil droplets 8 are scattered, and the drain oil 5 collides with the surface of the residual oil 6. Similarly, oil vapor and oil droplets 8 are scattered.

  However, since the space between the oil drain hole 2 b and the surface of the residual oil 6 is covered with the cover 12, the scattered oil vapor and the oil droplets 8 do not diffuse and adhere to the inside of the bearing box 1, and the residual oil 6 And discharged from the oil drain pipe 7. In addition, the cover of this embodiment has the advantage that it is easy to assemble and is less expensive than the first embodiment.

  Therefore, in the present embodiment, it is possible to provide an economical horizontal shaft type sliding bearing device that prevents the occurrence of oil vapor and oil droplets inside the bearing box, does not increase the outer shape, and is easy to assemble. it can.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front cross-sectional view of a horizontal axis plain bearing device that is a first embodiment of the present invention. Side surface arrow sectional drawing which follows the II line | wire of FIG. The principal part arrow directional cross-sectional view which follows the II-II line of FIG. Side surface sectional drawing of the horizontal axis | shaft type slide bearing apparatus which is the 2nd Embodiment of this invention. The principal part arrow directional cross-sectional view which follows the III-III line | wire of FIG. Front sectional drawing of the conventional horizontal axis | shaft type slide bearing apparatus. Side surface arrow sectional drawing which follows the IV-IV line | wire of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Bearing box, 1a ... Bearing box oil supply hole, 2 ... Bearing, 2a ... Bearing oil supply hole, 2b ... Bearing oil discharge hole, 3 ... Shaft, 4 ... Oil supply pipe, 5 ... Drain oil, 6 ... Residual oil, 7 ... Oil drain pipe, 8 ... oil vapor and oil droplets, 9 ... oil drain (outside bearing box), 10 ... oil drain, 11 ... oil drain guide pipe, 12 ... cover.

Claims (2)

Was connected to a forced lubrication system bearing is supported by a bearing housing, the bearing with lubricating oil supplied from the forced lubrication system is lubricated, the lubricating oil vapor and Aburashizukujo Ru is discharged from the oil discharge hole of the bearing In the horizontal shaft type sliding bearing device for retaining oil as residual oil at the bottom of the bearing box, and draining oil to the drainage system of the forced oiling device with an oil drain pipe connected to the bottom of the bearing box.
A horizontal shaft type plain bearing device characterized in that a drain oil guide pipe that guides to the residual oil is connected in a vertical direction to the oil drain hole of the bearing so that the lubricating oil discharged from the oil drain hole is not scattered. . The bearing connected to the forced oil supply device is supported by a bearing box, the bearing is lubricated with the lubricating oil supplied from the forced oil supply device, and the oil vapor and oil droplet-like lubrication discharged from the oil drain hole of the bearing In the horizontal shaft type sliding bearing device for retaining oil as residual oil at the bottom of the bearing box, and draining oil to the drainage system of the forced oiling device with an oil drain pipe connected to the bottom of the bearing box.
The horizontal axis, characterized in that the oil discharge hole of the bearing, said cover derived from oil discharge hole to the residual oil so as not to scatter the lubricating oil discharged vertically, and disposed in said bearing housing Type sliding bearing device.

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