JPS6096Y2 - Suction strainer mounting device - Google Patents

Description

[Detailed description of the invention] This invention relates to a mounting device for a suction strainer for hydraulic fluid in a hydraulic operating mechanism, etc. The purpose of this invention is to ensure that the strainer body is mounted securely and firmly, while also being extremely easy to attach and detach. This simplifies assembly, maintenance and inspection of the device, and furthermore, the strainer itself can be made simpler and lighter, and a mounting structure is realized that makes it easy and convenient to replace and install strainers of different sizes without any trouble. There is a particular thing.

Hereinafter, the configuration of the present invention will be explained in detail based on specific examples shown in the drawings.

Reference numeral 1 denotes a casing, and a strainer housing 2 is provided at a required position, and an oil passage plate 3 is attached to an opening in the side wall of the casing.

The outer diameter 7 of the inward protrusion 6 of the strainer mounting seat 5 is fitted into the support hole 4 bored in the oil passage plate 3, and the mounting seat 5 is detachably attached to the casing 1 using fasteners 8, 8. Install.

The inward protrusion 6 has an oil passage 10 that communicates with the oil passage 9 of the oil passage plate 3.
is provided, and the oil passage 10 is connected to the holding hole 11 in the inner diameter of the protrusion 6.
The holding hole 11 is formed in a tapered wall surface 11a having a large diameter on the protrusion direction side and a small diameter on the inner side.

On the other hand, 12 is the strainer body, and this strainer body 1
2, a compression coil spring 15 of an appropriate diameter is interposed between the base 13 and the tip holding seat 14, and the spring 15
A filter net 16 is stretched around the outer periphery of the base 13, and both ends are fixed to the base 13 and the holding seat 14, and a screw hole 17 is provided in the center of the base 13. Appropriate oil passages 18 are bored around the periphery (Figs. 3 and 4).This strainer main body 12 has the outer diameter of the tip of the base 13 as described above. The mounting bolt 19 is fitted into the tapered wall surface 11a of the holding hole 11, and the mounting bolt 19, which is screwed into the mounting seat 5, is screwed into the screw hole 17 of the base 13 and tightened to be attached to the casing 1. .

Next, to explain the operation of the device configured in this way,
First, fit the strainer main body 12 into the tapered hole of the mounting seat 5, tighten and fix both with the mounting bolt 19, and then install the mounting seat 5 into the support hole 4 by fixing it with the fasteners 8, 8. The oil passages are in communication, so when the hydraulic mechanism etc. starts operating, the oil in the housing 2 leaks through the filter net 16, enters the strainer body, and flows into the oil passages 18, 10, and 9. It flows.

When inspecting and servicing the filter main body 12, the filter main body 12 can be easily removed by performing the operation opposite to the above-mentioned installation procedure, so the operation work is simple.
In particular, since the mounting seat 5 and the strainer base 13 are attached by tapered fitting, positioning during attachment and detachment is easy and the work can be performed even more easily.

As explained above, the present invention provides a holding hole 11 having a tapered surface 11a in the mounting seat 5 which can be attached to and detached from the casing 1.
A tapered surface formed on the outer periphery of the base 13 of the strainer body 12 is fitted into the tapered surface 11a of this holding hole, and a bolt 19 is screwed into the center of the base 13.
is supported on the mounting seat 5, and the bolt 19 is mounted on the mounting seat 5.
The tapered surface on the base 13 side is brought into pressure contact with the tapered surface 11a of the holding hole by rotating from the outside of the strainer, and the strainer body is attached to the casing in a cantilevered manner, which has the following advantages.

1. Screw the bolt 19 supported on the mounting seat 5 so that it can be rotated from the outside into the center of the base 13 of the strainer body, and turn the bolt 19 to attach the tapered surface of the outer periphery of the base to the mounting seat. It can be press-fitted into the taper hole on the 5th side, so even when replacing the strainer body with a strainer with a different diameter.
Pressure-fitting can be carried out reliably and without any trouble by allowing the tapered surface portion, and together with the fact that the strainer body is supported on a cantilever, it can be carried out extremely easily.

2. In the conventional suction strainer mounting structure (for example, the one seen in Utility Model Application Publication No. 53-77266), one end of the strainer body is supported on the mission case wall by taper fitting, and the other end is also supported on the mission case's sleeve. Since the sleeve support side is pressed by a spring and the tapered fitting side is pressed against the sleeve, the strainer as a whole must be made rigid enough to withstand the pressure of the spring. This has the disadvantage that the strainer as a whole cannot be made lighter, and since it is double-sided, both ends are supported by fitting holes when installing and removing it, making it difficult to align and allow for easy installation even if there is slight deformation. However, in the present invention, the above structure is supported on a cantilever, which eliminates the need for the strainer to be highly rigid, making it lighter and simpler, and making it extremely easy to attach and detach. In addition, since it was supported on a cantilever, it became possible to use strainers of different lengths interchangeably.

[Brief explanation of the drawing]

The drawings show a specific example of the present invention; FIG. 1 is a sectional view of the device of the present invention, FIG. 2 is a view taken along the arrow in FIG. 1, and FIGS. FIG. 3 is a cross-sectional view of the strainer base section taken along a line. 1...Casing, 5...Mounting seat, 1
1... Holding hole, 11a... Tapered surface, 12... Strainer body, 13...
Motohara.

Claims (1)

[Scope of utility model registration request] A tapered surface 1 is attached to the mounting seat 5 which can be attached to and detached from the casing 1.
A holding hole 11 having a diameter of 1a is provided, and a tapered surface formed on the outer periphery of the base 13 of the strainer body 12 is fitted into the tapered surface 11a of this holding hole, and a bolt 19 screwed into the center of the base 13 is inserted. The base 1 is supported by the mounting seat 5, and the bolt 19 is rotated from the outside of the mounting seat 5.
A suction strainer mounting device characterized in that the tapered surface on the third side is pressed into contact with the tapered surface 11a of the holding hole, and the strainer main body is mounted on the casing in a cantilevered manner.