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    • 1. 发明专利
    • CHUCKING METHOD OF ROUND-ROD-SHAPED MATERIAL
    • JPH05172721A
    • 1993-07-09
    • JP34346391
    • 1991-12-25
    • TOMOEGUMI GIKEN KK
    • SAITO KAZUHIRO
    • G01N3/04G01N3/08
    • PURPOSE:To obtain a chucking method making it possible to execute chucking of a test piece of a round bar material to a chuck part reliably and firmly without machining for chucking. CONSTITUTION:A chuck part 1 is provided with a heating part 3 which can heat the whole of the chuck part to a prescribed temperature and with a hole 2 for chucking bored to be of a diameter being smaller a little than the one of a test piece 4. At the time of chucking of the test piece 4, the diameter of the hole 2 for chucking is enlarged by thermal expansion by heting the chuck part 1 by the heating part 3 and the test piece is fitted in this hole 2 of the enlarged diameter. Thereafter heating by the heating part 3 is stopped, the chuck part 1 is cooled and the diameter of the hole 2 is restored to the original one. Thereby slippage is prevented by a so-called shrinkage fit effect without machining for chucking, and thereby the test piece can be fixed surely in the hole for chucking.
    • 2. 发明专利
    • DEVICE FOR ATTACHING JOINT FLANGE
    • JPH02292137A
    • 1990-12-03
    • JP11062489
    • 1989-04-28
    • TOMOEGUMI GIKEN KK
    • TOKUMURA KANAEISOHATA NOBORUSAITO KAZUHIRO
    • B23P21/00
    • PURPOSE:To facilitate the insertion of a joint flange into a mounting jig by supporting the attachment surface of the joint flange horizontally, attaching to a flange attachment portion by inserting a dowel pin into a reference hole, and moving the flange, while holding it up-right, to an attachment position. CONSTITUTION:One of piled joint flange 2 with its attachment surface horizontal is supported in horizontal attitude as it is with supporting claws 4d of an overhead crane as transfer means, and sent into an attachment portion 6 by the crane operation to be attached with its attachment surface 11a held horizontally. Here, the attachment flange 2 is centered by inserting two dowel pins passing through reference holes in the attachment surface 11a specified according to the size of the flange and secured to the attachment surface 11a by a clamping mechanism 14. Then an attachment plate 11 is erected upright, the attachment surface of the joint flange 2 is moved to the position facing the attachment surface of a main member, and the attachment work is made by utilizing an attachment device 1.
    • 6. 发明专利
    • ELONGATION FOLLOWING APPARATUS OF TENSILE-CREEP RUPTURE TESTER
    • JPH02268247A
    • 1990-11-01
    • JP9034589
    • 1989-04-10
    • TOMOEGUMI GIKEN KK
    • WAGA KAZUOSAITO KAZUHIRO
    • G01N3/08G01N3/00
    • PURPOSE:To make the pulling speed of a test piece variable and to improve testing accuracy by using hydraulic motors for the actuator of a driving device for the test piece, and selectively using a plurality of the hydraulic motors. CONSTITUTION:A weight is loaded on one end of a test piece through a lever. The test piece is moved with a driving device 3 in the axial direction. A hydraulic motor 4 is used for an actuator for the driving device 3. A plurality of hydraulic pumps 6A and 6B having the different discharge quantities are juxtaposed in an hydraulic circuit 5. When the fact that the weight which is loaded on the test piece reaches the lower limit position is detected with a sensor in this constitution, a directional control valve 7 for speed which is provided on the side of the hydraulic pump 6B is opened and closed. The hydraulic pump 6A or the hydraulic pump 6B is selected, and the test piece is pulled down. Therefore, the pulling speed of the test piece can be changed in response to the elongating speed of the test piece readily, and the testing accuracy can be enhanced.
    • 7. 发明专利
    • EMERGENCY SHUTDOWN DEVICE FOR WORKING DEVICE
    • JPH06272390A
    • 1994-09-27
    • JP7278393
    • 1993-03-09
    • TOMOEGUMI GIKEN KKTOMOE CORP
    • ISOHATA NOBORUSAITO KAZUHIROMIURA MITSUOSATO TAKASHI
    • E04B1/35B66F3/30B66F3/46E04G21/16
    • PURPOSE:To bring a working device to an emergency halt when there occurs an emergency by connecting one end of a hydraulic cylinder to a load and the other end of the cylinder to a working device and consisting of a set of two devices where each cylinder chamber is connected with a pipeline and detecting fluctuations in s distributed load of each cylinder. CONSTITUTION:A hydraulic pressure load distributor 7 connects one end of hydraulic cylinders 41 and 42 to a load and the other end to a set of two working devices which lifts up and down the load 5 respectively and communicates and interconnects a hydraulic chamber of each cylinder by way of a pipeline 5 and seals a working solution inside. In the case when some emergency occurs or particularly when the load is tilted, and a piston 44 of one hydraulic cylinder 42 comes in contact with the upper end of the other cylinder tube 4c, the hydraulic pressure in the pipeline is decreased than a fixed value P while a distributed load W2 of one hydraulic cylinder 42 is increased than the other load W1. These troubles are detected with the hydraulic load distributor 7 and two load detectors 81 and 82. At least when it is determined that these exist fluctuations in one distributed load or in the hydraulic pressure in the pipeline, an operation controller will halt the working device 2 on an emergency.