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1. 发明专利

JP2000205810A STEP HEIGHT MEASURING INSTRUMENT 失效
公开(公告)号：JP2000205810A
公开(公告)日：2000-07-28
申请号：JP1124899
申请日：1999-01-20
申请人： YOSHIDA TEKKOSHO KK , SAI KENKA
发明人： TANIGUCHI HIROSHI , SAI KENKA
IPC分类号： G01B7/02 , G01B21/02 , G01D5/165
摘要： PROBLEM TO BE SOLVED: To provide a step height measuring instrument which is useful to inspect welding, etc. SOLUTION: This measuring instrument is equipped with 1st and 2nd drawing compass type rods R1 and R2 of equal effective length (a) which are made rotatable by each having one end pivoted on a 1st shaft 1 and a reference base 4 which pivots the other end of the 1st rod R1 rotatably on a 2nd shaft 2 and also has a flat base surface 3. Further, the measuring instrument is equipped with a 1st potentiometer P1 which detects the elevation angle α to the 1st rod R1 and the bottom surface 3 of the reference base 4, a 2nd potentiometer 2 which detects the opening angle β between the 1st and 2nd rods R1 and R2, a calculating circuit part which finds the elevation angle α and opening angle β by inputting the output voltages of the 1st potentiometer P1 and 2nd potentiometer P2 and calculates the step size Y' of a measurement surface S2 that a point atop of the 2nd rod R2 specifies to the reference surface S1 where the reference base 4 is placed by a preprogrammed microcomputer, and a display device which displays the calculated step size Y'.

2. 发明专利

JP2580358B2 失效
公开(公告)号：JP2580358B2
公开(公告)日：1997-02-12
申请号：JP4260490
申请日：1990-02-26
申请人： YOSHIDA TEKKOSHO KK
发明人： HARA KATSUHIRO , KATO KAZUO
IPC分类号： E02D3/12

3. 发明专利

JPH08209680A CONNECTING ROD FOR GROUND IMPROVEMENT ENGINEERING METHOD AND CONNECTING PIN THEREFOR 失效
公开(公告)号：JPH08209680A
公开(公告)日：1996-08-13
申请号：JP3779895
申请日：1995-02-03
申请人： YOSHIDA TEKKOSHO KK
发明人： MIYAMOTO SHINICHI
IPC分类号： E21B17/02 , E02D3/12
摘要： PURPOSE: To prevent run-out of the whole of a connecting rod by connecting a front tubular rod to a rear tubular rod in different positions in the direction of shaft center and in the circumferential direction to put the same in the connecting state with high coaxiality. CONSTITUTION: A coupling part 5 is provided on the rear tail end side of a front rod. A coupling peripheral surface is formed on the inner peripheral surface of the coupling part 5, and the cross section thereof is hexagonal. A coupling part 7 having a coupling peripheral surface 6 is formed on the rod head end side of the forward end part of a rear rod 2. When the rear rod 2 is inserted along the third coupling peripheral surface 8 of the coupling part 7 of the rear rod 2 in the hexagonal second coupling peripheral surface 6 of the coupling part 5, composite holes 35 are composed in two places by a second connecting pin hole and a third connecting pin hole. When an integral connecting pin 50 is inserted in the composite holes 35 in two places, the tip collides with a bolt 59, and bolts 60, 61 are screwed in from the right side.

4. 发明专利

JPH08135845A EXCAVATION PROPULSION METHOD USING SMALL DIAMETER PIPE AND EXCAVATION BIT FOR EXCAVATION PROPELLING MACHINE USING SMALL DIAMETER PIPE 失效
公开(公告)号：JPH08135845A
公开(公告)日：1996-05-31
申请号：JP30154894
申请日：1994-11-10
申请人： YOSHIDA TEKKOSHO KK
发明人： HONDA HIDEOMI
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE: To perform excavation without reducing propulsion force even if encountering a bituminous layer by theoretically determining the length of the slant face of the blade of a roller bit which rotates on its axis while revolving together with the cutter face of a guide body comprising outer and inner casings and the distance between an excavation face and the open port of a discharge guide hole. CONSTITUTION: The guide body 1 of an excavation propelling machine using a small diameter pipe comprises outer and inner casings 2 and 3 and is provided with roller bits 10 and fixed bits 11 in cutter faces 7 and 8 at the front ends of an outer casing 2a and inner casing 3a in the front section. In this case, under the condition that θis a constant, and an integral range is limited within 0 second and Δt seconds, the distance D between the open port of a discharge guide hole and an excavation face is given both of the equations are compatible, i.e., length L is determined by e+a 1-cos(kωΔt}, and D=(1/2).960.(Δt) . Where, (e), (ω) and (a) represent the length of the slant face of the blade of the roller bit in its radial direction, the revolution angle of the roller bits and radius of the roller bit respectively.

5. 发明专利

JPH08120664A AGITATING BLADE FOR GROUND IMPROVEMENT, AND GROUND IMPROVING METHOD EMPLOYING AGITATING BLADE 失效
公开(公告)号：JPH08120664A
公开(公告)日：1996-05-14
申请号：JP28291794
申请日：1994-10-21
申请人： YOSHIDA TEKKOSHO KK
发明人： TANAKA NORIO
IPC分类号： E02D3/12
摘要： PURPOSE: To improve efficiencies in agitation and execution of work, and to improve capacity for improving the ground. CONSTITUTION: This apparatus is composed of an agitating shaft 1, a fixed agitating blade 10, a free rotary blade 20, and nozzles 27 provided to the fixed agitating blade 10 and the free rotary blade 20 on their both sides for ejecting ground improvement agent. The ejecting directions of the ground improvement agent ejected from the nozzles 27 are set so as not to intersect the agitating shaft 1 at a right angle, and the revolution speed of the free rotary blade 20 is adjusted with the direction and the pressure of ejection changed, and thereby efficiency in agitation can be improved to its maximum extent.

6. 发明专利

JPH07331982A ROD REGRABBING CONTROL METHOD OF GROUND AMELIORATING MACHINE AND DEVICE THEREOF 失效
公开(公告)号：JPH07331982A
公开(公告)日：1995-12-19
申请号：JP15528994
申请日：1994-06-14
申请人： NIPPON KENSETSU KIKAI SHOJI KK , YOSHIDA TEKKOSHO KK
发明人： YOSHINAGA HIROSHI , HARA KATSUHIRO
IPC分类号： E21B19/06 , E02D3/12 , E21B19/08 , E21B19/086
摘要： PURPOSE:To perform the regrabbing operations of a spindle chuck and a hydraulic rod holder without any malfunction. CONSTITUTION:At a time when a swivel head reaches a bottom dead center, if a pushbutton (PB6) is pushed, a normally-closed contact (TR) is released, stopping any spindle rotation. An alternate contact 64 of an alternate relay 63 is shifted, operating an on-delay timer (HCR) 65. With this operation, a solenoid selector valve 25 is turned off and a hydraulic rod holder 8 clamps a rod. Another solenoid selector valve 22, namely, a chuck releases the rod holding. With this release, the spindle rotation is stopped, whereby the hydraulic rod holder 8 is in a state of being loosened and the chuck becomes loose too. In succession, a swivel head body is operated by a feed lever, and a manual selector valve 27 is selected and made to go up, thereby making it perform a reverse action.

7. 发明专利

JPH0791164A ROD-FEED AND-ROTATION CONTROLLER FOR FOUNDATION IMPROVING 失效
公开(公告)号：JPH0791164A
公开(公告)日：1995-04-04
申请号：JP25648993
申请日：1993-09-20
申请人： NIPPON KENSETSU KIKAI SHOJI KK , YOSHIDA TEKKOSHO KK
发明人： YOSHINAGA HIROSHI , HARA KATSUHIRO , KATOU KAZUO
IPC分类号： E21B44/06 , E02D3/12 , E02D17/13 , E02F5/02 , E21B19/08 , E21B19/086 , E21B21/08 , E21B44/00
摘要： PURPOSE:To reciprocate a rod automatically when the supply pressure water and rod-feed pressure at the time of excavation sent to a foundation improving machine are increased abnormally. CONSTITUTION:When the pressure of the supply pressure water of an excavating rod for a foundation improving machine is detected by a supply water pressure sensor 56 and an abnormal-pressure set value and detecting pressure coincide, a signal is transmitted to a sequence controller 51 by a supply water pressure setter 58, the excavating rod is reciprocated, and the state is returned to a normal state. Likewise, the pressure of the pressure oil of a feeding hydraulic cylinder forwarding a swivel head body is detected by a feeding pressure sensor 43, and a feeding pressure setter 61 reciprocates the excavating rod by the detecting value.

8. 发明专利

JPH071124A FIRE-CRACKER ARC WELDING METHOD AND COATING PATCH THEREFOR 失效
公开(公告)号：JPH071124A
公开(公告)日：1995-01-06
申请号：JP13693093
申请日：1993-05-17
申请人： YOSHIDA TEKKOSHO KK , SHIKOKU YOUZAI KK
发明人： YOSHIDA YUTAKA , MURAKAMI KEIICHI , MIYAO NOBUAKI , ARAKI TAKAO , HIRAHARA TSUKASA
IPC分类号： B23K9/02 , B23K9/32 , B23K37/06 , C22C9/00
摘要： PURPOSE:To make a spatter quantity small, to obtain good welding bead and to reduce eye disorder caused by arc light by using non-magnetic alloy specifying the m.p. and the thermal conductivity as a coating patch for fire-cracker welding material. CONSTITUTION:The non-magnetic alloy having >=1022 deg.C m.p. and >=0.448cal/cm/ sec/ deg.C thermal conductivity at 20 deg.C is used as the coating patch 2 for fire- cracker welding material 1. By high m.p. and high thermal conductivity of the coating patch 2, melting and vanishing of the coating patch 2 into welding molten metal pool can be prevented. Further, high temp. attended with the welding work can quickly be dispersed into the welded part, the welded bead can be formed in the stable condition. Probability, in which the spatter spattered from the gap between the coating patch 2 and the welding base material 9 sticks on the surface of a welded base material 9, is reduced.

9. 发明专利

JPH06221075A BORING MACHINE BY DOUBLE HEADER DRILL AND SOIL IMPROVEMENT WORK METHOD 失效
公开(公告)号：JPH06221075A
公开(公告)日：1994-08-09
申请号：JP2593293
申请日：1993-01-22
申请人： YOSHIDA TEKKOSHO KK
发明人： TANAKA NORIO
IPC分类号： E02D3/12 , E21B7/04
摘要： PURPOSE:To shorten a construction period by connecting an inner rod to an outer casing, excavating various grounds and beds by adjusting freely the relative forward and backward position of them, and filling in a soil improvement agent through the inner rod. CONSTITUTION:An inner rod 8 and an outer casing 6 which are moved straight forward independently are rotated independently or simultaneously to make excavation. In this case, while slime discharged is confirmed, the inner rod 8 and outer casing 6 are moved relatively to adjust the in and out dimension of them 6 and 8. Also, while the outer casing 6 and inner rod 8 are pulled out from the ground, a hole is enlarged by the inner rod 8, and a soil improvement agent is filled into the hole through the inner rod 8. Then the pulled out outer casing 6 and inner rod 8 are removed sequentially to improve the ground.

10. 发明专利

JPH05195682A AUTOMATIC FEED CONTROL DEVICE FOR GROUND IMPROVING MACHINE 失效
公开(公告)号：JPH05195682A
公开(公告)日：1993-08-03
申请号：JP2906292
申请日：1992-01-21
申请人： NIPPON KENSETSU KIKAI SHOJI KK , YOSHIDA TEKKOSHO KK
发明人： YOSHINAGA HIROSHI , HARA KATSUHIRO
IPC分类号： E02D3/12 , E21B19/06
摘要： PURPOSE:To continuously feed a rod without interrupting the work. CONSTITUTION:The vertical shift quantity of an excavating rod is outputted by a rotary encoder 23, and output pulses are counted and detected by a digital counter 51. When the preset pulses are attained, a central processing section 52 outputs a signal to a relay circuit 60 via a D/A converter 58. The relay circuit 60 switches an electromagnetic selector valve via the output signal to control the feed of the excavating rod.

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