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1. 发明专利

JP2001295316A WORKING DEVICE FOR CONSTRUCTION MACHINERY 失效
公开(公告)号：JP2001295316A
公开(公告)日：2001-10-26
申请号：JP2000117029
申请日：2000-04-18
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAKUMA NORIMITSU , URASE KOHEI , SHUKUZAWA KAZUNORI , NAGAI SAORI
IPC分类号： E02F3/40
摘要： PROBLEM TO BE SOLVED: To simplify the constitution of an operating-tool connecting means while exchanging an operating tool to the operating-tool connecting means by simple works. SOLUTION: An operating tool connector 25 is composed of a hook supporter 26 installed to an arm 15, a fixed hook 30 fixed and mounted on the hook supporter 26 and engaged with the first mounting pin 40 for a bucket 38, a rotary hook 31 rotatably secured to the hook supporter 26 and engaged with the second mounting pin 41, and a latch plate 33 fitted to the hook supporter 26 and engaged with the second mounting pin 41. Thus, the operating tool connector 25 simply supports the bucket 39 firmly by a triangle formed among each hook 30, 31 and the bucket 38. When the bucket 38 is mounted and demounted, each hook 30, 31 or the like can be engaged and disengaged easily with and from the mounting pins 40, 41 from the outer circumferential side in the radial direction.

2. 发明专利

JPH06294779A ULTRASONIC APPARATUS AND METHOD FOR IMAGE INSPECTION 失效
公开(公告)号：JPH06294779A
公开(公告)日：1994-10-21
申请号：JP10623493
申请日：1993-04-08
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAKUMA NORIMITSU
IPC分类号： G01N29/04 , G01N29/22 , G01N29/44 , G01N29/10
摘要： PURPOSE:To detect a state of exfoliation or the like inside IC without necessitating skill, by generating contour data by subjecting smoothed measured data or display data to secondary differentiation, and by obtaining a clear image by adjusting the gain of an echo signal or the focus of a probe. CONSTITUTION:An ultrasonic flaw detecting part 6 transmits a transmission pulse to a probe 4, receives an echo signal from a sample 1 and sends it to a peak detecting part 7. The detecting part 7 extracts a peak value of a received echo, subjects it to A/D conversion 8 and then sends the converted value to a measured data processing device 16. After storing the sent data in a memory 14e, MPU 9 executes an image smoothing processing program 14a to remove noise and generates display data on a smoothed image. In succession, it executes an edge emphasizing processing program 14b and extracts the contour of the display data by Laplacian (secondary differentiation) so as to emphasize an edge. When a clear image is not obtained, adjustment can be executed simply by adjusting a gain or a focus. Then, an inspecting region binary-coding processing program 14c is executed, the area of a place of exfoliation is calculated and the quality of the sample is determined.

3. 发明专利

JPH04332862A ULTRASONIC IMAGE INSPECTION DEVICE 失效
公开(公告)号：JPH04332862A
公开(公告)日：1992-11-19
申请号：JP13206191
申请日：1991-05-08
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： MIYATA TORU , SAKUMA NORIMITSU , TOKUDA YASUSHI
IPC分类号： G01N29/06 , G01N29/22 , G01N29/44
摘要： PURPOSE:To prevent an image distortion which is generated due to a constant- speed scanning by enabling an ultrasonic wave to be transmitted at a scanning position which is ahead by approximately 1/2 of a time from transmission to reception and then an echo from a specimen to be received at a scanning position after approximately 1/2 of a time at each measurement-point position. CONSTITUTION:After focusing of a probe 3 is completed, a delay time T equivalent to a time t =2L/V (L; distance. V; sound speed) from transmission of an ultrasonic wave to its reception and a data at each measurement point of a specimen 22 is sampled by a constant-speed plane scanning. When a measurement point A is taken as an example, the probe 3 receives an echo at the measurement point A of the ultrasonic wave which is transmitted at T ( /2) time before reaching the measurement point A before reaching the measurement point A. Therefore, a measurement signal which is actually obtained after A/D conversion agrees with the measurement point A and a sampling positions of reciprocating measurement data do not deviate when the probe 3 performs a reciprocating scanning, thus preventing an image from being distorted.

4. 发明专利

JPH03125961A APPARATUS FOR MEASURING UNDERSURFACE STATE USING ULTRASONIC WAVE 失效
公开(公告)号：JPH03125961A
公开(公告)日：1991-05-29
申请号：JP26297289
申请日：1989-10-11
申请人： KYUSHU ELECTRIC POWER , HITACHI CONSTRUCTION MACHINERY
发明人： KAWAKAMI SHIGEYUKI , KANETANI AKIHIRO , SAKUMA NORIMITSU , TAKISHITA TOSHIO , HAMAZAKI GIICHI
IPC分类号： G01N29/04 , G01N29/11 , G01N29/22 , G01N29/44
摘要： PURPOSE:To detect the flaw just under a surface with low frequency by irradiating an object to be inspected with a burst-like ultrasonic wave having length allowing the flaw echo and surface echo just under the surface to interfere with each other and detecting the level of the echo receiving signal obtained from the object to be inspected. CONSTITUTION:A transmission burst signal set to time length wherein a surface echo and the flaw echo obtained from the flaw under a surface is generated by a burst signal generating circuit 8 to drive a probe 1 and a part of the ultrasonic burst wave 9 generated from the probe 1 is reflected from the surface 2 of the object 3 to be inspected while a part thereof passes through the surface 2 to be reflected from the internal flaw 4 and both waves are respectively again received as the surface echo 9s and the flaw echo 9f by the probe 1. As a result, since the echo receiving signal of the interference wave synthesized by interference is obtained in a receiver 7, the presence of the flaw 4 of the object 3 to be inspected can be detected by detecting the peak level of the interference wave. At this time, when the generation length of the burst signal is changed, the position of the flaw can be also detected.

5. 发明专利

JPH01148959A CURED STATE CHECKING METHOD FOR RESIN USING ULTRASONIC WAVE 失效
公开(公告)号：JPH01148959A
公开(公告)日：1989-06-12
申请号：JP30746187
申请日：1987-12-07
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAKUMA NORIMITSU
IPC分类号： G01N29/00
摘要： PURPOSE:To make it possible to check the curing states of various kinds of resins without destruction readily, by measuring the ratio between the height of the echo of the reflected wave from the surface of the resin and the height of the echo of the reflected wave from the bottom surface of the resin. CONSTITUTION:An ultrasonic wave is projected to a resin 1 from a probe 3. The ultrasonic wave is inputted into a case 2. The wave reaches a boundary plane 4 between the inner surface of a case 2 and the surface of the resin 1 through the thickness of the case 2. A part of the wave is reflected, and the remaining part is inputted into the resin 1. The reflected wave 5 is received with the probe 3 and further received in a flaw detector as an S echo. The ultrasonic wave, which is inputted into the resin 1, is propagated in the resin and reaches a boundary plane 6 between the inner surface of the case 2 and the bottom surface of the resin 1. The most part of the wave is reflected from the boundary plane 6. The reflected wave is received in the flaw detector as a B echo through the probe 3. A ratio h1/h2 between the heights of both echoes, where h1 is the height of the received S echo and h2 is the height of the B echo, is obtained. Then correlation between the ratio h1/h2 and the mixing ratio of a curing agent, which is mixed in the resin 1, is obtained.

6. 发明专利

JPS62222160A STRENGTH MEASUREMENT OF SEAM-WELDING BY MEANS OF SUPERSONIC WAVE 失效
公开(公告)号：JPS62222160A
公开(公告)日：1987-09-30
申请号：JP6498086
申请日：1986-03-25
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAKUMA NORIMITSU
IPC分类号： G01N29/04
摘要： PURPOSE:To enable strength measurement uneffected by a welding pattern, by bringing signal sending and receiving inclined-angle probes contact with each other on material surfaces with a welding seam located inbetween and assuming a height of signal receiving echo of a transmitted wave passing through the seam as an evaluation index of the seam welding. CONSTITUTION:Inclined-angle probes 4, 5 for sending and receiving signals are located with a constant distance inbetween perpendicular to the welding line of a welding seam 3 and from the seam 3 also and brought into contact on material surfaces 1, 2 one facing against the other. And, a supersonic wave is irradiated by the probe 4 to the welding seam 3 through the material 1 and a transmitted wave 8 passing through the welding seam 3 is received by the probe 5. By measuring strength of the seam welding with a height of echo of its signal receiving transmitting wave as an evaluation index, non-destructive and easy quantitative measurements can be conducted without being affected by a pattern of the welding seam.

7. 发明专利

JP2002339387A CONSTRUCTION EQUIPMENT EQUIPPED WITH EARTH REMOVING BLADE 失效
公开(公告)号：JP2002339387A
公开(公告)日：2002-11-27
申请号：JP2001142077
申请日：2001-05-11
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： NAGASAWA TOKUJI , SAKUMA NORIMITSU
IPC分类号： E02F3/815 , E02F9/28
摘要： PROBLEM TO BE SOLVED: To provide construction equipment equipped with a blade, which is reduced in a parts count and improved in workability at the time of assembling the same by providing a cutting edge formed like the U letter or the like, having front and rear edge portions at lower ends of the earth removing blade. SOLUTION: The blade 12 has a bottom plate 18 which has a mounting plate 22A of the cutting edge 22 attached thereto in an exchangeable manner by means of mounting screws 24, and the front and rear edge portions 22B, 22C of the cutting edge 22 are formed in a manner being continuous from respective front and rear plates 13, 15 of the blade 12 without a step. Thus, when a blade apparatus 11 is assembled, the front and rear edge portions 22B, 22C are efficiently built onto the blade 12 as the cutting edge 22 formed of a single component part. Further, when the cutting edge 2 is worn out, the cutting edge 22 can be easily exchanged without exchanging the entire blade 12.

8. 发明专利

JP2002225758A CRAWLER BELT 失效
公开(公告)号：JP2002225758A
公开(公告)日：2002-08-14
申请号：JP2001025823
申请日：2001-02-01
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAKUMA NORIMITSU
IPC分类号： B62D55/21
摘要： PROBLEM TO BE SOLVED: To provide a crawler belt which can maintain lubricity between a bush and a connection pin and enhance wear resistance and heat resistance of a sealing member. SOLUTION: A molybdenum disulfide treated layer 17 constituting a sliding layer formed of solid lubricant is provided on the inner circumferential surface 15B of the bush 15 constituting the crawler belt 11. The connection pin 16 is slidably fitted in the inner circumferential side of the bush 15 having the molybdenum disulfide treated layer 17 thereon. An annular seal 18 comprising a pair of coned disk springs 19 and 20 is provided between the inner end face 13C and the end face 15A of the bush 15 in a seal fitting hole 13B of an outer link part 13 constituting a track link 12.

9. 发明专利

JPH10181646A CRAWLER BELT 失效
公开(公告)号：JPH10181646A
公开(公告)日：1998-07-07
申请号：JP35719796
申请日：1996-12-26
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： SAKUMA NORIMITSU , MIZUSHIMA HIROSHI , NISHIMURA KOJI , TANIGAWA KATSUMI
IPC分类号： B62D55/20
摘要： PROBLEM TO BE SOLVED: To make a structure simple and lightweight by attaching rubber pads directly to small link members. SOLUTION: A mounting plate 43 extending in the right and left direction from a link member 42 is provided on each link member 42 and a bolt through hole 43A for mounting a rubber pad 44 is bored in both end sides of the mounting plate 43. Therefore, a sufficient space for mounting or dismounting a bolt 47 can be ensured around each bolt through hole 43A of the mounting plate 43 and the rubber pad 11 can be mounted on the mounting plate 43 by each bolt 47.

10. 发明专利

JPH09210048A PIVOTAL DEVICE 失效
公开(公告)号：JPH09210048A
公开(公告)日：1997-08-12
申请号：JP3428896
申请日：1996-01-30
申请人： HITACHI CONSTRUCTION MACHINERY , HOKUETSU KOGYO CO
发明人： SAKUMA NORIMITSU , NISHIMURA KOJI
IPC分类号： F16C11/04
摘要： PROBLEM TO BE SOLVED: To mount a stopper mechanism for a spindle without forming an overhanging part for outward movement at a bracket whose shaft is connected so as to make free rotation. SOLUTION: Brackets 44R, 44L vertically-formed on a base which constitutes a swing post, are formed with drilled shaft penetrating holes 45R, 45L passing through a spindle 46. A boss part 47 which has bushes 48 extended from lower boom of a boom, is fitted onto the spindle 46 so as to make free rotation. To provide a stopper means for the spindle 46, a pin penetrating hole 46a is drilled near the edge of one end of the spindle 46 so as to penetrate in the orthogonal direction to the axial line. In the bracket 44L on one side, a bottomed pin inserting hole 52 is drilled to a prescribed position beyond the shaft penetrating hole 45R from the top end. The pin inserting hole 52 is inserted from the entrance part 52a side of the pin inserting hole 52 with the pin inserting part 52 disposed in line with the pin penetrating hole 46a, and a plug 53 is screwed in the entrance part 52a.

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