JPS6392239U

JPS6392239U -

Info

Publication number: JPS6392239U
Application number: JP18664186U
Authority: JP
Priority date: 1986-12-03
Filing date: 1986-12-03
Publication date: 1988-06-15

Description

[Brief explanation of drawings]

第１図はこの考案の好適な試験片保護装置を装
備した油圧サーボ式高温高圧液中疲労試験機の一
例を示す一部破断正面図、第２図は同上の試験片
保護装置を拡大して示す縦断正面図である。１……機台、２……圧力容器、３……荷重負荷
軸、３―１……ストツパー、３―２……傾斜面、
３―４……ガイド筒、３―５……可動ストツパー
、３―６……傾斜面、３―７……ソレノイド、３
―８……コイルばね、４……油圧アクチユエータ
、５……サーボ弁、６……圧力検出器、７……サ
ーボ弁コントローラ、８……架台、９……試験片
。 Figure 1 is a partially cutaway front view showing an example of a servohydraulic high-temperature, high-pressure liquid fatigue tester equipped with a preferred specimen protection device of this invention, and Figure 2 is an enlarged view of the same specimen protection device. FIG. 1... Machine base, 2... Pressure vessel, 3... Load bearing shaft, 3-1... Stopper, 3-2... Inclined surface,
3-4... Guide tube, 3-5... Movable stopper, 3-6... Inclined surface, 3-7... Solenoid, 3
-8... Coil spring, 4... Hydraulic actuator, 5... Servo valve, 6... Pressure detector, 7... Servo valve controller, 8... Mount, 9... Test piece.

補正昭６２．４．６実用新案登録請求の範囲を次のように補正する
。Amendment April 6, 1982 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】試験片が圧力容器内に取付けられ、圧力容器内
圧力と外圧との差圧により試験片に生ずる荷重を
、前記差圧を圧力検出器により電気的に検出して
この信号を油圧サーボ弁に加えることにより補償
する方式の電気的圧力補償型油圧サーボ式疲労試
験機において、試験片を取付ける荷重負荷軸に傾
斜面付き固定ストツパーと、この固定ストツパー
に近接して機台側に傾斜面付き可動ストツパーを
設置し、前記可動ストツパーは通電時はソレノイ
ドに吸引され、ソレノイドＯＦＦによりソレノイ
ドと可動ストツパーを反発させるように取付けた
コイルばねにより固定ストツパー側に移動し該可
動ストツパーの傾斜面が固定ストツパーの傾斜面
と相重なるように接して荷重負荷軸の引張り方向
への移動を防止するごとく設けたことを特徴とす
る疲労試験機の試験片保護装置。[Claim for Utility Model Registration] A test piece is installed in a pressure vessel, and the load generated on the test piece due to the pressure difference between the pressure inside the pressure vessel and the external pressure is detected electrically by a pressure detector. In an electrically pressure compensated hydraulic servo fatigue testing machine that compensates by applying this signal to a hydraulic servo valve, there is a fixed stopper with an inclined surface on the load shaft on which the test piece is attached, and a machine is placed close to this fixed stopper. A movable stopper with an inclined surface is installed on the base side, and when the movable stopper is energized, it is attracted by the solenoid, and when the solenoid is turned off, the solenoid and the movable stopper are repulsed by a coil spring, which moves the movable stopper to the fixed stopper side. 1. A test piece protection device for a fatigue testing machine, characterized in that an inclined surface of a stopper is provided so as to overlap and contact an inclined surface of a fixed stopper to prevent movement of a load bearing axis in a tensile direction.

Claims

[Scope of utility model registration request]

A test piece is installed in a pressure vessel, and the load generated on the test piece due to the pressure difference between the pressure inside the pressure vessel and the outside pressure is detected electrically by a pressure detector, and this signal is applied to a hydraulic servo valve. An electrically pressure-compensated hydraulic servo fatigue testing machine that compensates for the test specimen has a fixed stopper with an inclined surface on the load shaft on which the test piece is attached, and a movable stopper with an inclined surface on the machine base adjacent to this fixed stopper. When the movable stopper is energized, it is attracted by the solenoid, and when the solenoid is turned off, the solenoid and the movable stopper are moved to the fixed stopper side by a coil spring installed to repel the solenoid and the movable stopper, so that the inclined surface of the movable stopper moves toward the fixed stopper. 1. A test piece protection device for a fatigue testing machine, characterized in that it is provided so as to overlap and contact a surface to prevent movement of a load bearing axis in a tensile direction.