JPH08218424A - Level gauge device for lubricating oil for turn reduction gear in construction machine - Google Patents

Abstract

PURPOSE: To easily inspect a lubricating oil level in a turn reduction gear installed at a position which is difficult to approach because of location in the middle part of the rotary body of a construction machine and of disturbance made by piping and covers. CONSTITUTION: A hole 5a communicating with the inside is provided in the lower peripheral wall of a turn reduction gear 5, and a connecting pipe 13 for a pipe or a hose led to a position where an inspecter can approach easily is connected to the hole 5a. A perspective level gauge 15 fitted in height to the position of the normal lubricating oil level of the turn reduction gear 5 on a flat ground is provided in a perpendicular part at the tip of the connecting pipe 13, and the cocks 14A, 14B are severally attached to the upper and lower ends of the perspective level gauge 15. The inspection of the lubricating oil level is carried out with both the upper and lower cocks 14A, 14B being opened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating oil level gauge device for a slewing speed reducer which is installed at a position which is an intermediate portion of a slewing body of a construction machine and which is difficult to approach due to being obstructed by a cover and piping.

[0002]

2. Description of the Related Art First, an example of a conventional swing structure of a construction machine will be described with reference to FIGS.

A turning main frame 1 is rotatably mounted on a track frame 3 via turning wheels 2. A swing speed reducer 5 driven by a swing motor 6 is fixed to an intermediate portion of the swing main frame 1, and the swing pinion 4 which is a component of the swing speed reducer 5 is a track frame 3
It meshes with the internal gear fixed to.

Generally, a hole is provided in the upper part of the turning speed reducer 5, and a suitable pipe 7 is attached to the hole. The pipe 7 has a level gauge 8 sufficient to reach the normal level of the lubricating oil stored in the swing reduction gear 6.
Is plugged in. Pull out this level gauge 8,
Based on the gauge length of the portion where the oil adheres to the lower surface, it is confirmed whether or not a proper amount of lubricating oil is inside the swing reduction gear 5.

[0005]

As shown in FIG. 5, the hydraulic pipe 10 and the cover 11 connected to the control valve 9 are provided above the swing speed reducer 5, and it is difficult to approach the swing speed reducer 5. In such a case, it is conceivable to lengthen the pipe 7 and the level gauge 8 to detect the lubricating oil level from the cover 11. However, as the machine becomes larger, the pipe 7 and the level gauge 8 become larger and heavier, which makes it difficult to pull out the level gauge 8 and damages the level gauge 8 due to vibration. Therefore, extra parts such as a steady rest clamp for suppressing vibration must be provided. Further, during the inspection, there is a problem that the oil attached to the level gauge 8 drops and stains the hands of the inspector and the vicinity of the upper opening of the pipe 7.

The present invention has been made in view of the above, and is a level at which a lubricating oil level of a swing speed reducer, which has a hydraulic pipe and a cover provided above and is difficult to approach, can be easily detected. An object is to provide a gauge device.

[0007]

According to the present invention, a connecting pipe is provided from a lower portion of a swing speed reducer installed at a position which is an intermediate portion of a revolving structure and which is difficult to approach due to being hindered by a pipe and a cover, to a place easily approaching. A transparent level gauge whose height is adjusted to the normal lubricating oil level position of the swing speed reducer on a flat ground at the end of the connecting pipe, and cocks are placed above and below the transparent level gauge. It is characterized by being attached.

[0008]

The function of the lubricating oil level of the swing reduction gear is to check the oil level inside the transparent level gauge by opening both cocks at the upper and lower ends of the transparent level gauge on a flat ground. After completing the inspection, close the cocks at the upper and lower ends of the transparent level gauge together.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
This will be described below. In those figures, FIG. 4 and FIG.
The same members as those shown in FIG.

When the temperature of the lubricating oil in the swing speed reducer 5 rises, the internal air expands. The swing speed reducer 5 is provided with an air breather 12 for bleeding air in order to suppress the increase in internal pressure. The conventional level gauge 8
, There is a hole with a similar function in the knob on the top.

The lower peripheral wall portion of the slewing reducer 5 is provided with a hole 5a formed therein, and a pipe or a hose which is guided to a position where an inspector can easily approach the hole 5a. The connecting pipe 13 is connected. A vertical level portion of the connecting pipe 13 is provided with a transparent level gauge 15 whose height is adjusted to the normal lubricating oil level position of the swing speed reducer 5 on a flat ground. Transparent level gauge 15
Is made of, for example, a transparent synthetic resin. Cocks 14A and 14B are attached to the upper and lower ends of the transparent level gauge 15, respectively.

The inspection of the oil level in the turning speed reducer 5 is carried out on a flat ground as shown in FIG. 2 by the upper and lower cocks 14A, 14B.
Open together. Since the inside of the swing speed reducer 5 is open to the atmosphere by the air breather 12, and the inside of the level gauge 15 is also opened to the atmosphere by the cock 14A on the upper end side, the oil level in the level gauge 15 is swung down and slowed down. The height L is the same as the oil level inside the machine 5, and the level gauge 1
By visually observing 5 from the outside, the lubricating oil level in the swing reduction gear 5 can be confirmed. Since the level gauge 15 is provided at a position where an inspector can approach it, a certain distance must be set in the horizontal direction with respect to the turning reduction gear 5. On the other hand, in the vertical direction, in order to have the above-mentioned function, the level gauge 15
Needs to match the normal level of lubricating oil of the swing reducer 5.

Construction machines generally operate on sloping terrain due to their use. FIG. 3 shows a case where the level gauge 15 side is lower than the turning speed reducer 5 due to the inclination. L1 is the inclination θ
Shows the lubricating oil level in the swing speed reducer 5 at .degree., And L2 shows the lubricating oil level in the level gauge 15 at the inclination .theta..degree ..
Cocks 14A, 14B at the upper and lower ends of the level gauge 15
Opens only when checking the lubricating oil level and closes as shown in Fig. 3 after checking. As a result, even when the vehicle body is tilted at an angle of θ, it is possible to prevent the lubricating oil from flowing into the level gauge 15 from the turning reduction gear 5, and to prevent the lubricating oil in the level gauge 15 from spilling to the outside due to the shaking of the vehicle body. It can be prevented.

[0014]

As described above, according to the present invention, it is possible to easily confirm the lubricating oil level of the swing speed reducer which is difficult to approach, and the confirmation is made by visually observing the level gauge from the outside. By doing so, oil stains can be prevented. Further, a long level gauge, a pipe, and parts for preventing vibration thereof are unnecessary, and the structure is simplified.

[Brief description of drawings]

FIG. 1 is a side view showing one embodiment of the present invention;

2 is an enlarged sectional side view showing a state in which a cock of the level gauge of FIG. 1 is opened,

3 is a sectional side view showing a state in which the cock of the level gauge of FIG. 2 is closed,

FIG. 4 is a cross-sectional side view showing an example of a conventional slewing reducer for a construction machine,

FIG. 5 is a side view showing an example of a swing structure of a conventional construction machine.

[Explanation of symbols]

 1 Swing Main Frame 5 Swing Reducer 5a Hole 6 Swing Motor 10 Hydraulic Piping 11 Cover 12 Air Breather 13 Connecting Pipe 14A Cock 14B Cock 15 Level Gauge

Claims (1)

[Claims] 1. A connecting pipe is guided from a lower portion of a slewing reducer installed at a position which is in the middle of a revolving structure and is obstructed by a pipe and a cover so that it is difficult to approach, and an end of the connecting pipe. The construction features a transparent level gauge whose height is adjusted to the normal lubricating oil level position of the swing reducer on a flat surface, and cocks are attached to the upper and lower parts of the transparent level gauge, respectively. Lubricating oil level gauge device for swing reducer in machinery.