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4. 发明专利

JPH0230804A COMPACTION 失效
公开(公告)号：JPH0230804A
公开(公告)日：1990-02-01
申请号：JP17888088
申请日：1988-07-18
申请人： NAGANO TOSHIMI
发明人： NAGANO TOSHIMI
IPC分类号： E01B27/20 , E01C19/34
摘要： PURPOSE:To enable tamping to be effectively performed by composing the surface to be butted of the tamping plate of a rammer, of a curved surface and a plane by tamping with the curved surface at the time of tamping strongly and with the plane at the time of finishing flat. CONSTITUTION:At the end of the piston of a oil pressure rammer 1, a tamping plate 3 having plane sections a-b, c-d and a curved surface b-c is set. At the time of tamping strongly, the rammer is set in a plumb state, and rammer tamping is performed with the curved surface b-c, and at the time of finishing flat, the rammer is inclined to the left or right, and compaction is performed with the plane sections a-b, c-d. As a result, the strong tamping can be performed by the rammer tamping.

7. 发明专利

JPS639706A MULTIFUNCTION HYDRAULIC OSCILLATOR 失效
公开(公告)号：JPS639706A
公开(公告)日：1988-01-16
申请号：JP15097586
申请日：1986-06-27
申请人： NAGANO TOSHIMI
发明人： NAGANO TOSHIMI
IPC分类号： F15B11/15 , B25D9/26 , E02D3/046 , F03C1/007 , F03C1/08 , F03C1/26 , F03C1/32
摘要： PURPOSE:To make the maintenance and control easy, and make the piston stroke variable, by connecting an operating valve section and an oscillating valve section to a multifunction hydraulic oscillator, and carrying out the selecting operation of the oscillating valve section by opening and closing an oil passage of the multifunction hydraulic oscillator. CONSTITUTION:A multifunction hydraulic oscillator 1 is constituted of a hydraulic cylinder 3, a sliding sleeve 13 and a hydraulic piston 15. An oscillating valve section 4 is constituted of an oscillating spool 28, a large-diameter needle 29 and a small-diameter needle 30. The multifunction hydraulic oscillator 1 is connected through oil passages to an operating valve section 2 and the oscillating valve section 4. With this arrangement, electrical control is not required to thereby make the maintenance and control easy. Further, it is possible to easily obtain ON-OFF control of the oscillator, change in frequency, change in oscillation waveform, change in piston stroke, etc.

8. 发明专利

JPH02109690A PERCUSSION DEVICE FOR LOW NOISE 失效
公开(公告)号：JPH02109690A
公开(公告)日：1990-04-23
申请号：JP26123488
申请日：1988-10-17
申请人： NAGANO TOSHIMI
发明人： NAGANO TOSHIMI
IPC分类号： B25D17/11 , B25D17/20
摘要： PURPOSE:To reduce the percussion sound of a hammer by providing a cushioning material on the percussion face of a chisel. CONSTITUTION:A chisel 2 fitted with a cushioning material 4 is impacted by the hammer 1 of a percussion device 5. In this case, water is jetted from a nozzle 9 in the necessary number to forcibly cool the imparted face 3 of the chisel 2. Consequently the life of the cushioning material 4 can be prolonged.

9. 发明专利

JPS6390675A LIQUID PUMP 失效
公开(公告)号：JPS6390675A
公开(公告)日：1988-04-21
申请号：JP23759286
申请日：1986-10-06
申请人： NAGANO TOSHIMI
发明人： NAGANO TOSHIMI
IPC分类号： F04B1/00 , F04B1/34
摘要： PURPOSE:To provide a liquid pump which has the merits of both a plunger pump form and a double acting boosting pump form, by a method wherein a pressure governing piston and a delivery check valve is situated to a cylinder communicated to a liquid feed source, and return port is formed in a branch pipe. CONSTITUTION:A suction check valve 4 is situated in a branch pipe 2 at the outlet of a check valve 1 communicated to a liquid feed source 17, and is connected to a cylinder 3. A delivery check valve 7 is located to the cylinder 3, a delivery circuit 10 is coupled to the delivery check valve, and a return circuit is formed with a return port 11. Through the working of a pressure governing piston 5 in the cylinder 3,delivery liquid is fed with a pressure, and surplus liquid is returned to the return circuit. This constitution enables provision of the merits of both a plunger pump form and a double acting boosting pump form.

10. 发明专利

JPS62114797A OSCILLATING HYDRAULIC PRESS 失效
公开(公告)号：JPS62114797A
公开(公告)日：1987-05-26
申请号：JP25429185
申请日：1985-11-13
申请人： NAGANO TOSHIMI
发明人： NAGANO TOSHIMI
IPC分类号： B30B5/00 , B30B11/02
摘要： PURPOSE:To considerably improve a press effect by providing an oscillating piston into a hydraulic piston, exerting a static pressure to a pressure receiving body and exerting the impact pressure of the oscillating piston thereto. CONSTITUTION:A pressure receiving piston 2 and a pressurizing piston 3 are provided in a hydraulic cylinder 1. The oscillating piston 5 is freely slidably provided in the piston 3 and a spool 9 is inserted therein. The piston 2 descends to pressurize the pressure receiving body 7 when a hydraulic power is acted on a pressurized chamber 6 by a pump P in the above-mentioned constitution. The hydraulic power is supplied to an oil path 8 communicating with the chamber 6 when the oil pressure in said chamber increases further. The oil pressure is thus alternately exerted to the top and bottom of the spool 9 via a prescribed port and spring, by which the piston 5 is vigorously oscillated. The impact pressure in addition to the static pressure are, therefore, exerted to the pressure receiving body 7 and the press effect is considerably improved.

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