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11. 发明专利

JPS63103118A MANDREL PENETRATOR FOR BOARD DRAIN CONSTRUCTION WORK 失效
公开(公告)号：JPS63103118A
公开(公告)日：1988-05-07
申请号：JP24552986
申请日：1986-10-17
申请人： TOKYU KENSETSU KK , HITACHI CONSTRUCTION MACHINERY
发明人： MURAMATSU EIJIRO , TSUJI YOSHINOBU , SAITO TAKEO
IPC分类号： E02D3/10
摘要： PURPOSE:To prevent the occurrence of buckling, etc., by a method in which chucks to hold a mandrel are provided for a penetrating stand vertically movable along a guide rail, and the mandrel is vertically moved on a place near the ground's surface. CONSTITUTION:A mandrel penetrator 23 set on the lower part of a leader 2 is provided with a U-shaped penetrating stand 8, a guide gib sliding along a guide rail, and an oil-pressure cylinder 18 to vertically move the stand 8. Chucks 10A to hold a mandrel 7 are attached to the stand 8 in a freely interval regulating manner. The oil-pressure cylinder 14 of the chucks 10A is contracted, the mandrel 7 is held, the cylinder 18 is extended, and the mandrel 7 is penetrated. The cylinder 14 is then loosened to separate the mandrel 7, and the cylinder 18 is contracted to pull up the stand 8 to repeat the penetration. The buckling and deformation of the mandrel can thus be prevented.

12. 发明专利

JPS62121230A LEADER FOR PILE DRIVER 失效
公开(公告)号：JPS62121230A
公开(公告)日：1987-06-02
申请号：JP25778385
申请日：1985-11-19
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAITO TAKEO
IPC分类号： E02D7/16
摘要： PURPOSE:To perform disassembly and assembly n a short time, by a method wherein a recess section is formed on the one side connection section of respec tive single unit leaders, wherein a projection section thrust into the recess sec tion is formed on the other side connecting section to connect, both sections together, and wherein the connecting section are removably fixed via pins. CONSTITUTION:At the upper section of a lower leader 2a, a projecting bracket 9 is fixed with bolts 6 and nuts 7. At the lower section of an intermediate leader 2b, a recess bracket 8 is fixed with the bolts 6 and the nuts 7. After the recess bracket 8 and the projecting bracket 9 are connected together and the slots of the recess and projecting sections are made to coincide with each other, pins 10 are inserted into the slots to connect the lower leader 2a to the intermediate leader 2b. Besides, in the same manner, an upper leader is con nected to the intermediate leader 2b.

13. 发明专利

JPS6135329B2 失效
公开(公告)号：JPS6135329B2
公开(公告)日：1986-08-12
申请号：JP12863780
申请日：1980-09-18
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAITO TAKEO , HARA SEIICHIRO , AZEGAMI MAKOTO , OOCHI MINORU , TSUNABUCHI MASAKI
IPC分类号： E02D7/10 , F15B11/00

14. 发明专利

JPH07224424A JACK CYLINDER DEVICE OF PILE STRIKING MACHINE 失效
公开(公告)号：JPH07224424A
公开(公告)日：1995-08-22
申请号：JP3930894
申请日：1994-02-15
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAITO TAKEO
IPC分类号： E02D7/20 , E02D13/00 , F15B15/14
摘要： PURPOSE:To prevent damage of a bellow-form cover in a jack cylinder device of a pile driving machine. CONSTITUTION:The bottom of a piston rod 5c is coupled with a jack float 5d through a spherical joint. By a band 9, bolt, etc., the top of a bellow-form cover 8 is fixed to the bottom of the cylinder 5a. To the bottom of the bellow- form cover 8, a ring-shaped weight 12 is mounted with a band 13, bolt, etc., wherein the weight 12 elongates the cover 8 by its deadweight in pursuit after elongation of the piston rod 5c. The weight 12 confronts the oversurface of the jack float 5d with a certain degree of freedom.

15. 发明专利

JPH0144851B2 失效
公开(公告)号：JPH0144851B2
公开(公告)日：1989-09-29
申请号：JP12863880
申请日：1980-09-18
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAITO TAKEO , HARA SEIICHIRO , AZEGAMI MAKOTO , OOCHI MINORU , TSUNABUCHI MASAKI
IPC分类号： E02D7/10 , F15B11/00

16. 发明专利

JPS63103119A FITTING DEVICE FOR BOARD DRAIN REEL 失效
公开(公告)号：JPS63103119A
公开(公告)日：1988-05-07
申请号：JP24553086
申请日：1986-10-17
申请人： TOKYU KENSETSU KK , HITACHI CONSTRUCTION MACHINERY
发明人： MURAMATSU EIJIRO , TSUJI YOSHINOBU , SAITO TAKEO
IPC分类号： E02D3/10
摘要： PURPOSE:To prevent failure in drawing by a method in which a guider is provided for a mandrel fitting device, a remote controlled operator to attach or detach a reel stand is provided for the construction machine, the mandrel is pulled up, and board drain is exchanged on the land. CONSTITUTION:A male connector is provided for a mandrel fitting device 5 sliding along a guide rail 20, and a female connector is provided for a reel stand 6 wound with a board drain 17 in such a way as to enable them to be attached or detached by a pin 10 on a remote control basis. In supplying the drain 17, the pin 10 is pulled out, the stand 6 is removed out of the fitting device 5, and the mandrel 7 is pulled up with the device 5. A new drain 17A is attached to the stand 6 left on the land, and the stand 6 is pulled up through a guide roller 9 rolling along the mandrel 7 by a winch and connected by the pin 10 with the device 5. The failure in drawing the mandrel can thus be prevented.

17. 发明专利

JPS6135328B2 失效
公开(公告)号：JPS6135328B2
公开(公告)日：1986-08-12
申请号：JP12350380
申请日：1980-09-08
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAITO TAKEO , HARA SEIICHIRO , AZEGAMI MAKOTO , OOCHI MINORU , TSUNABUCHI MASAKI
IPC分类号： E02D7/10 , F15B11/00

18. 发明专利

JPH08144680A LEADER SUPPORT STRUCTURE FOR WORK MACHINE 失效
公开(公告)号：JPH08144680A
公开(公告)日：1996-06-04
申请号：JP28362794
申请日：1994-11-17
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAITO TAKEO
IPC分类号： E21B15/00 , E02D7/16
摘要： PURPOSE: To improve work efficiency by a method wherein when the opposite ends of a supporting pin inserted into the lower end of a leader are supported by a bracket on the side of a work machine, an open groove opened in a pin diameter direction is provided in a fitting part of at least one of the leader and bracket. CONSTITUTION: While a supporting pin 6 is mounted to one of a leader bracket provided on a work machine and a leader 2, the other one of the bracket and leader is moved along an open groove 21c to engage the pin 6 with the groove 21c or to disengage the pin from the groove, thereby engaging the leader 2 with the bracket or disengaging the leader from the bracket. Next, as required, a limiting member is mounted to the opening of the groove 21c to prevent the pin 6 from slipping from the end of the opening of the groove 21c. And when the groove 21c is provided so as to be opened at the lower end surface of the leader 2, if the leader 2 is lifted or lowered while the pin 6 is mounted to the bracket, the pin 6 is engaged with the leader 2 or disengaged therefrom through the groove 21c. As a result, the leader can be disassembled or assembled by means of one crane and work efficiency can be improved.

19. 发明专利

JPH0754340A PILE DRIVER 失效
公开(公告)号：JPH0754340A
公开(公告)日：1995-02-28
申请号：JP22668693
申请日：1993-08-20
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAITO TAKEO
IPC分类号： E02D7/16
摘要： PURPOSE:To lift the position of a top sheave block easily and in its turn improve the stability of a pile driver by connecting a sliding member under the top sheave block to a top-leader by an expansion hydraulic cylinder. CONSTITUTION:A sliding member 9 is fixed to the lower end face part of a top sheave block 7, and at the same time, the sliding member 9 is slidably inserted in a top leader 2a. One end part of a hydraulic cylinder 10 for elevating the sliding member 9 is connected to an optional part in the top leader 2a, and the other end part of the hydraulic cylinder 10, that is, the tip part of a piston rod 10a, is connected to an optional part in a sliding part by a pin 11B. At the time of assembling and disassembling a leader 2, the hydraulic cylinder 10 is placed in the shortest state. The top sheave block 7 is pushed up by elongating the hydraulic cylinder 10 as occasion calls, and work is performed in this state.

20. 发明专利

JPH06116954A POSITIONING DEVICE FOR PILE AND METHOD THEREOF 失效
公开(公告)号：JPH06116954A
公开(公告)日：1994-04-26
申请号：JP28930292
申请日：1992-10-02
申请人： HITACHI CONSTRUCTION MACHINERY
发明人： SAITO TAKEO
IPC分类号： E02D7/16
摘要： PURPOSE:To make it possible to position the lower end of a pile to a driving position efficiently, accurately and safely in the case the pile is driven and to make it possible to drive the pile with high degree of accuracy of vertical. CONSTITUTION:To link pile holder members 1A and 1B consisting of first links 10a and 10b capable of turning horizontally against a leader 5 and second links 12a and 12b capable of turning horizontally against the first links 10a and 10b are mounted to both sides of the lower end of the leader 5 of a pile driver 1. Pile holding rollers 13 contacted with sides of a pile are mounted to the pile holder members 1A and 1B. A guide device 15 guiding a rope 4a wound on a winch 4 mounted on a body of the pile driver 1 and used for drawing the pile near is provided on at least the pile holder member 1B. The pile 8 is drawn near to two pile holding rollers 13 by the rope 4a to position.

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