CN102937184A

CN102937184A - Oil path high-pressure drain plug

Info

Publication number: CN102937184A
Application number: CN201210488607XA
Authority: CN
Inventors: 毛林; 陈莹; 陆其荣
Original assignee: Canny Elevator Co Ltd
Current assignee: Canny Elevator Co Ltd
Priority date: 2012-11-27
Filing date: 2012-11-27
Publication date: 2013-02-20

Abstract

The invention discloses an oil path high-pressure drain plug, comprising a drain plug and a squeezing piece matched with the drain plug, wherein the whole body of the drain plug is in a conical structure; a conical cavity which is eccentric with the axial direction of the drain plug is milled from the bottom to the inside; a ring of grooves are arranged on the outer wall of the drain plug; the groove is internally arrayed with teeth; tip ends of the teeth are leveled with the tapered face of the drain plug; and the squeezing piece and the cavity in the squeezing piece are in interference splicing match. The oil path high-pressure drain plug is in a simple structure and ingenious in concept; a pressure expansion principle is utilized to ensure that the drain plug is expanded in a radial direction to be more closely combined with a hole on a work piece and the sealing effect is better; even if the oil path high-pressure drain plug is operated for long time, the oil path high-pressure drain plug is not loosened and the service life is greatly prolonged; and when oil needs to be discharged, the aim of detaching can be realized by forcedly drilling the bottom of the drain plug by an electric drill.

Description

A kind of oil circuit high pressure plug

Technical field

What the present invention relates to is the mechanical fitting field, is specifically related to a kind of oil circuit high pressure plug.

Background technique

The shutoff of common hydraulic circuit all is to adopt bolt and rubber washer to carry out shutoff, and in long-term using process, plug is very easily loosening, and rubber washer is also very easily aging, thereby has the phenomenon of leakage of oil.

Summary of the invention

The object of the invention provides a kind of oil circuit high pressure plug, and it can solve existing problem in the background technique effectively.

In order to solve existing problem in the background technique, it comprises plug and crowded part with matching, described plug integral body is conical structure, and inwardly mill out from the bottom and the axial cavity of concentric cone of plug, the outer wall of described plug offers a circle groove, be arranged with tooth in this groove, the tip of this tooth flushes with the conical surface of plug, and described crowded part is pegged graft with the cavity interference in the plug and cooperated.

Described crowded part is whole to be the conical structure of applying cavity inner conical surface, extends outward a circle on the conical surface of this crowded part and squeezes face, and this crowded face is corresponding with the position of plug upper groove.

The cross section of described crowded face is arc-shaped structure.

Mill out a borehole that extends to center of circle direction near the described crowded part bottom the conical surface, and mill out the grooving corresponding with borehole on the base of plug one side.

Owing to adopted above technological scheme, the present invention has following beneficial effect: simple in structure, be skillfully constructed, utilize the principle of pressure expansion to make tightr that the hole of plug radial expansion on workpiece be combined, sealing effect is better, even long time running can not become flexible yet, has increased greatly its working life, and in case need to drain the oil, only need one electric drill bored out by force from the bottom of plug can to realize the purpose of removing.

Description of drawings

In order to be illustrated more clearly in the present invention, below in conjunction with accompanying drawing embodiment is done simple introduction.

Fig. 1 is structural representation of the present invention.

Embodiment

For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with the accompanying drawing in the embodiment of the invention, the technological scheme in the embodiment of the invention is clearly and completely described.

Referring to Fig. 1, this embodiment is to be achieved by the following technical solutions, it comprises plug 1 and crowded part 2 with matching, described plug 1 integral body is conical structure, and inwardly mill out from the bottom and the axial cavity 3 of concentric cone of plug 1, the outer wall of described plug 1 offers a circle groove, is arranged with tooth 4 in this groove, the tip of this tooth 4 flushes with the conical surface of plug 1, and described crowded part 2 is pegged graft with cavity 3 interference in the plug 1 and cooperated.

Described crowded part 2 integral body are the conical structure of applying cavity 3 inner conical surfaces, should extend outward the crowded face 5 of a circle on the conical surface of crowded part 2, it is corresponding with the position of plug 1 upper groove to squeeze face 5, can make and squeeze part 2 and pushing cavity 3 when interior, tooth 4 outward radials in the groove are expanded, and the tip of tooth 4 is embedded on the workpiece inwall.

Described crowded face 5 cross sections are arc-shaped structure, the extraction behind the constructability.

Mill out a borehole 6 that extends to center of circle direction near described crowded part 2 bottoms the conical surface, and mill out the grooving 7 corresponding with borehole 6 on the base of plug 1 one sides, after plug 1 fixed, hammer drill is inserted in the borehole 6, utilizes lever principle can easily will squeeze part 2 and extract out.

Owing to adopted above technological scheme, this embodiment has following beneficial effect: simple in structure, be skillfully constructed, utilize the principle of pressure expansion to make tightr that the hole of plug radial expansion on workpiece be combined, sealing effect is better, even long time running can not become flexible yet, has increased greatly its working life, and in case need to drain the oil, only need one electric drill bored out by force from the bottom of plug can to realize the purpose of removing.

Claims

1. oil circuit high pressure plug, it is characterized in that it comprises plug and crowded part with matching, described plug integral body is conical structure, and inwardly mill out from the bottom and the axial cavity of concentric cone of plug, the outer wall of described plug offers a circle groove, be arranged with tooth in this groove, the tip of this tooth flushes with the conical surface of plug, and described crowded part is pegged graft with the cavity interference in the plug and cooperated.

2. a kind of oil circuit high pressure plug according to claim 1 is characterized in that described crowded part integral body is the conical structure of applying cavity inner conical surface, extends outward a circle on the conical surface of this crowded part and squeezes face, and this crowded face is corresponding with the position of plug upper groove.

3. a kind of oil circuit high pressure plug according to claim 2, the cross section that it is characterized in that described crowded face is arc-shaped structure.

4. a kind of oil circuit high pressure plug according to claim 1 is characterized in that milling out a borehole that extends to center of circle direction near the conical surface in described crowded part bottom, and mills out the grooving corresponding with borehole on the base of plug one side.