专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPS56165790A SCREW COMPRESSOR 失效
公开(公告)号：JPS56165790A
公开(公告)日：1981-12-19
申请号：JP6783080
申请日：1980-05-23
申请人： HITACHI LTD
发明人： FUJIWARA MITSURU , KASUYA KATSUHIKO , MATSUNAGA TETSUZOU , TAKEDA FUMIO , AOKI MASAKAZU
IPC分类号： F04C18/16
摘要： PURPOSE:To maintain high efficiency of a compressor, by separting a delivery side chamber from a suction stroke operating chamber with protrusive edges, forming said edges so as to be alwasy situated in the outside of the periphery of a rotor and preventing communication of the delivery side chamber to the operating chamber. CONSTITUTION:A curve drawn from a point 51-52 is a part of a circle in larger radius than that of a circle 47 with a point 45 as its center. While a curve drawn from a point 53-54 is a part of a circle in larger radius than that of a circle 46 with a point 44 as its center. There are given a straight line drawn from the point 52- 53 and circular arcs in a small radius drawn from a point 14 to the point 51 and from the point 54-15. Accordingly, a delivery side chamber is never communicated to an operating chamber in a suction stroke, thus high efficiency of a compressor can be always maintained.

2. 发明专利

JPS56153120A VARIABLE SPEED GEAR FOR CRUSHER 失效
公开(公告)号：JPS56153120A
公开(公告)日：1981-11-27
申请号：JP5625980
申请日：1980-04-30
申请人： HITACHI LTD
发明人： KOGURE KIYOSHI , TERAMOTO HITOSHI , NAGANO SHIYUUICHI , MATSUNAGA TETSUZOU , YAMADA TOSHIHIRO
IPC分类号： F16C35/067
摘要： PURPOSE:To prevent fretting from occurring in a variable speed gear provided with a crusher body on the upper side thereof, by a method wherein oil grooves are provided on the surface of a member facing in contact with the outer race of the thrust bearing of the variable speed gear. CONSTITUTION:In the variable speed gear for a crusher, the driving force from a prime mover is tramsmitted to an output shaft 7 through a large gear 6 and then to a crusher body (not shown) installed on the upper part. Coal etc. are crushed by the operation of said crusher body and thrust load is added to a thrust bearing 11 through an output shaft 7. In such an equipment, on the surface of a lower gear casing 10 is provided oil grooves 12. Thus, through a clearance is not secured by the thrust load between the outer race 11b of the thrust bearing 11 and the lower gear casing 10, lubricating oil can be supplied sufficiently from the oil grooves 12 and seizure and fretting are prevented from occurring.

3. 发明专利

JPS55160587A DRUM TYPE FULL AUTOMATIC WASHING MACHINE 失效
公开(公告)号：JPS55160587A
公开(公告)日：1980-12-13
申请号：JP6896079
申请日：1979-06-04
申请人： HITACHI LTD
发明人： TANAKA NAOYUKI , MATSUNAGA TETSUZOU
IPC分类号： D06F23/02

4. 发明专利

JPS5371311A TIGHLY CLOSED TYPE ELECTRIC MOVING COMPRESSOR 失效
公开(公告)号：JPS5371311A
公开(公告)日：1978-06-24
申请号：JP14649276
申请日：1976-12-08
申请人： HITACHI LTD
发明人： OKAYAMA MASAO , NAKAMURA YOUZOU , MATSUNAGA TETSUZOU , KANAMORI ISAO
IPC分类号： F04B39/06 , F25B31/02
摘要： PURPOSE:Cool down the electrically moving elements forcibly by collecting oil and cooling gas which scatter from the crank shaft.

5. 发明专利

JPS5958189A Screw rotor 失效
标题翻译：螺丝转子
公开(公告)号：JPS5958189A
公开(公告)日：1984-04-03
申请号：JP16651882
申请日：1982-09-27
申请人： Hitachi Ltd
发明人： KASUYA KATSUHIKO , MORI HIDETOMO , FUJIWARA MITSURU , MATSUNAGA TETSUZOU
IPC分类号： F01C1/16 , F01C1/08 , F04C18/16
CPC分类号： F01C1/084
摘要： PURPOSE:To improve the performance, efficiency, and reliability by keeping the minimum clearance over the whole range between the tooth forms in engagement by taking account of the thermal expansion in the actual operation, in the engagement between a female rotor and a male rotor. CONSTITUTION:The advance-surface flank 87 of a female rotor is formed with a smooth connection part from the secondary curves of a circular arc and a parabola, and a rtreat-surface flank is formed by the curve formed by the circular arc of the retreat-surface tooth top flanks 18 and 19 of a male rotor and the circular arc which is smaller than the circular arc at the leading tooth edge side of the advance-surface flank, and thus the service life of a tool is reduced, and the blow hole area is reduced, and the performance is improved. The rotor tooth form 48 which is changed by the thermal expansion during actual operation of rotors 1 and 2 is calculated by a definite element method etc., on the basis of the temperature distribution which is obtained through the measurement of temperature inside the rotor. The normal-temperature tooth form 50 of the female rotor 1 is obtained by restoring the rotor tooth form 49 of the female rotor 1 which is formed from the rotor tooth form 48, to the normal-temperature state through calculation.
摘要翻译：目的：通过考虑实际操作中的热膨胀，在母转子和阳转子之间的接合中，通过将啮合的齿形之间的整个范围内的最小间隙保持在最小间隙上来提高性能，效率和可靠性。构成：阴转子的前表面侧面87由圆弧和抛物线的二次曲线形成有平滑的连接部，并且由表面形成的弯曲形状的曲面侧面由回转圆弧形成阳转子的表面齿顶面18和19以及在前表面侧面的前齿缘侧比圆弧小的圆弧，因此工具的使用寿命降低，孔面积减小，性能提高。基于通过测量转子内的温度而获得的温度分布，通过确定元件法等来计算在转子1和2的实际操作期间通过热膨胀而变化的转子齿形48。母转子1的常温齿形50通过计算将由转子齿形48形成的阴转子1的转子齿形49恢复到常温状态而获得。

6. 发明专利

JPS5874889A SCREW COMPRESSOR 失效
公开(公告)号：JPS5874889A
公开(公告)日：1983-05-06
申请号：JP17212481
申请日：1981-10-29
申请人： HITACHI LTD
发明人： UCHIDA RIICHI , KASUYA KATSUHIKO , MATSUNAGA TETSUZOU , MORI HIDETOMO
IPC分类号： F04C18/16 , F04C29/00
摘要： PURPOSE:To keep the clearance at the front and rear faces of a male and a female rotors constant through the combined use of a spring member disposed at one end of a shaft of the female rotor and a thrust collar that is held in contact with the outer end faces of timing gears mounted at the end portions of the shafts of the male and the female rotors. CONSTITUTION:At the time of starting a compressor and during no-load operation of the same when the force urging a male rotor 7 from the suction side toward the discharge side of the compressor is smaller than that urging a female rotor 8 from the discharge side toward the suction side, shifting of the male rotor 7 from the suction side toward the discharge side is restricted by a gear 24 which is held in contact with a thrust collar 29 that is fixed to a gear 25 mounted on a shaft 10 of the female rotor 8. On the other hand, when the force urging the male rotor 7 from the suction side toward the discharge side is greater than that urging the female rotor 8 from the discharge side toward the suction side, the thrust collar 29 is urged toward the discharge side and the male and the female rotors 7, 8 are moved together toward the discharge side against the force of a spring 28 within the range of the axial internal clearances of ball bearings 18, 19, so that the clearances at the front and rear faces of the rotors 7, 8 can be kept constant. Therefore, the efficiency of the compressor can be increased.

7. 发明专利

JPS5756610A Performance testing apparatus for turbine bypass valve 失效
标题翻译：用于涡轮旁通阀的性能测试装置
公开(公告)号：JPS5756610A
公开(公告)日：1982-04-05
申请号：JP13072680
申请日：1980-09-22
申请人： Hitachi Ltd
发明人： TANAKA YOSHITO , IWATA NAOHIKO , FUJITA ISAO , MATSUNAGA TETSUZOU , HAMANO ARATA
IPC分类号： F01K9/04 , F01D21/20 , F01K7/38
摘要： PURPOSE: To test performance with high accuracy and reliability by providing a simulating-load oil-hydraulic cylinder opposite to a turbine bypass valve and by controlling the pressure in the oil chamber, adjacent to the bypass valve, of this oil- hydraulic cylinder to follow the setting pressure of the bypass valve.
CONSTITUTION: A turbine bypass valve 2 is provided with a simulating-load oil- hydraulic cylinder 17, applying the force equivalent to an actual steam force to the bypass valve 2, through a rod 19. The oil chambers 17a and 17b, above and below the piston 18 of the cylinder 17, are connected through piping 22 and 23 and a sequence valve 21, etc. as well as piping 24 and 25 and a servo valve 26, etc. The pressure in the oil chamber 17a is held constant by the operation of the sequence valve 21, and the servo valve 26 is controlled, being based on each output deviation between a pressure detector 30, which is provided in the oil chamber 17b, and a function generator 31, which has remembered the pressure signal corresponding to the pressure force which acts in response to the predetermined opening and closing amount of the bypass valve 2, so as to apply the simulating pressure to the valve 2.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：通过提供与涡轮旁通阀相对的模拟负载油压缸并通过控制该油压缸旁边的油室中的压力来跟踪油压缸的压力，从而测试高精度和可靠性的性能旁通阀的设定压力。构成：涡轮旁通阀2设置有模拟负载油压缸17，其通过杆19将相当于实际蒸汽力的力施加到旁通阀2上。上下油箱17a和17b 气缸17的活塞18通过管道22和23以及顺序阀21等以及管道24和25以及伺服阀26等连接。油室17a中的压力由基于设置在油室17b中的压力检测器30和函数发生器31之间的每个输出偏差来控制顺序阀21和伺服阀26的操作，该函数发生器31记住了对应于响应于预定的旁通阀2的打开和关闭量而起作用的压力，以将模拟压力施加到阀2。

8. 发明专利

JPS5725898A Drum type electric washing machine 失效
标题翻译：鼓式电动洗衣机
公开(公告)号：JPS5725898A
公开(公告)日：1982-02-10
申请号：JP9992580
申请日：1980-07-23
申请人： Hitachi Ltd
发明人： TANAKA NAOYUKI , MATSUNAGA TETSUZOU
IPC分类号： D06F23/02 , D06F33/02 , D06F37/40

9. 发明专利

JPS5666296A DRUM TYPE ELECTRIC WASHING MACHINE 失效
公开(公告)号：JPS5666296A
公开(公告)日：1981-06-04
申请号：JP14132279
申请日：1979-11-02
申请人： HITACHI LTD
发明人： TANAKA NAOYUKI , MATSUNAGA TETSUZOU
IPC分类号： D06F23/02 , D06F37/04 , D06F37/40

10. 发明专利

JPS5624545A PREDICTING METHOD OF TROUBLE IN GEAR TRANSMISSION 失效
公开(公告)号：JPS5624545A
公开(公告)日：1981-03-09
申请号：JP10025779
申请日：1979-08-08
申请人： HITACHI LTD
发明人： MAEZAWA KOUICHI , MATSUNAGA TETSUZOU , ISONO MASAAKI
IPC分类号： G01M13/02
摘要： PURPOSE:To surely detect the partial contact of a gear, by bonding active strain gauges for composing a bridge circuit, on the tooth flanks of both the side portions of the gear, which do not simultaneously mesh. CONSTITUTION:Active strain gauges 1, 2 are bonded on the tooth flanks of both the side portions of a gear 5, which do not simultaneously mesh. The gauges 1,2 are connected as adjacent arms of a half of the bridge. Dummy strain gauges 3, 4 are bonded on the end faces of the gear 5 and connected as adjacent arms of the other half of the bridge. The output of the bridge is applied to a strain measuring unit. It can be discriminated in terms of the polarity of the output of the bridge at which side portion of the gear 5 strain is caused on its tooth flank. According to this method, the partial contact of the gear 5 can quantitatively detected by comparing the tooth flank strain at one side of the gear 5 with that at the other side.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式