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11. 发明专利

JP2000313595A LINEAR MEMBER LAYING AND WINDING DEVICE 失效
公开(公告)号：JP2000313595A
公开(公告)日：2000-11-14
申请号：JP11986999
申请日：1999-04-27
申请人： AICHI CORP KK
发明人： MORI KOICHIRO , OTA KAZUHIRO , OGAWA MASATO , SAITO MASANOBU , SUDA MOTOAKI
IPC分类号： B66F9/06 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To prevent a damage to a linear member projecting from a bending/ stretching boom and extendedly provided on a working table through the boom even if the boom is swung. SOLUTION: This device is provided with a boom bracket 15 pivotally connected to the front end part of an telescopic boom 9 to freely swing and pivotally connected to a leveling cylinder 27, and a parallel link mechanism 17 in the front end part of the boom bracket 15. The boom bracket 15 has a horizontally projecting connection shaft 25, while the connection shaft 25 attaches a laying and winding member 30 formed by spirally winding an elastic thin plate. A linear member 49 such as electric wire or a hose through which oil flows projecting from the front end part of the boom 9 is laid and wound once around the laying and winding member 30, is extended to the parallel link mechanism 17, and is connected to a boom operation device 47 mounted to a working table 39. The laying and winding member 30 is elastically contracted and expanded according to paying-out of the linear member 49, and is turnable around the connection shaft 25.

12. 发明专利

JP2000296723A TRAVEL CONTROL DEVICE FOR HYDRAULICALLY DRIVEN VEHICLE 失效
公开(公告)号：JP2000296723A
公开(公告)日：2000-10-24
申请号：JP10659999
申请日：1999-04-14
申请人： AICHI CORP KK
发明人： MORI KOICHIRO , OTA KAZUHIRO , OGAWA MASATO , SAITO MASANOBU , SUDA MOTOAKI
IPC分类号： B60K17/10
摘要： PROBLEM TO BE SOLVED: To provide a travel control device which controls the supply of hydraulic oil from one hydraulic pump to right and left hydraulic motors and secures straight running performance. SOLUTION: This control device controls the supply of hydraulic oil to right and left hydraulic motors for travel driving 23, 22 by means of a supply control valve 55 so as to perform travel control and steering control of a hydraulically driven vehicle. A communicating oil line connecting right and left supply oil lines which supply the hydraulic oil from the supply control valve 55 to the right and left hydraulic motors 23, 22, respectively, and an open/close control valve 57 which performs open/close control of the communicating oil line are provided, and with the operation of operating levers 32, 31, the supply of the hydraulic oil to each of the right and left hydraulic motors 23, 22 is independently controllable. When the difference between the amounts of hydraulic oil supplied to the right and left hydraulic motors 23, 22, each amount which is set by an operation of the operating levers 32, 31, is equal to or smaller than a prescribed value, the open/close control valve 57 is controlled to so as to open, while when the difference exceeds the prescribed value, the open/close control valve 57 is controlled so as to close.

13. 发明专利

JP2000272892A ELASTIC BOOM 失效
公开(公告)号：JP2000272892A
公开(公告)日：2000-10-03
申请号：JP7809499
申请日：1999-03-23
申请人： AICHI CORP KK
发明人： MORI KOICHIRO , OTA KAZUHIRO , OGAWA MASATO , SAITO MASANOBU , SUDA MOTOAKI
IPC分类号： B66F9/06 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To provide an elastic boom for previously preventing damage to an actuation control valve at an inexpensive cost. SOLUTION: An elastic boom 30 has a boom bracket 31 journaled to the tip of an elastic boom 11, a linking member 40 journaled to the bracket 31, and a tip bracket 33 journaled to the tip part of the member 40. The member 40 has a pair of lower arms 43 arranged at given gaps in a horizontal direction in the bracket 1, an upper arm 41 arranged between a pair of arms 43 in plan view, an elastic cylinder 49 pivotally connected between the bracket 31 and the arm 41, and an actuation control valve 55 fitted to the side wall of the cylinder 49. The valve 55 can not be protruded outside from the boom 30 even the cylinder 49 is elastically actuated to oscillate the boom 30 in a vertical direction to the bracket 31.

14. 发明专利

JP2001031399A OPERATION CONTROL DEVICE OF WORKING VEHICLE 失效
公开(公告)号：JP2001031399A
公开(公告)日：2001-02-06
申请号：JP20994199
申请日：1999-07-23
申请人： AICHI CORP KK
发明人： MORI KOICHIRO , OTA KAZUHIRO , OGAWA MASATO , MOMOSE FUMIYA , SAITO MASANOBU , SUDA MOTOAKI
IPC分类号： B66F11/04 , B66F9/24
摘要： PROBLEM TO BE SOLVED: To prevent a vehicle braking force from lowering and the possibility of turning-over of a vehicle from increasing due to rise of wheels caused when a work bench is brought into contact with the ground during the traveling of the vehicle. SOLUTION: An operation control device 40 of a working vehicle comprises a controller 45 receiving the operation information on a boom operation device 25 and controlling the operation of a derricking cylinder 19 and a telescopic cylinder 17 which are the drive source of a telescopic boom. The controller 45 further comprises a limit movement range set circuit 55 setting the limit movement range of a work bench in which the work bench provided at the tip of the telescopic boom is not brought into contact with the ground on which a vehicle body is placed, a work bench position calculation circuit 53 calculating the position of the work bench, a judgment circuit 57 judging on whether or not the position of the work bench exceeds the limit movement range, and an operation control circuit 59 controlling the operation of the derricking cylinder 19 and the telescopic cylinder 17 in the direction exceeding the limit movement range of the work bench when the judgment that the position of the work bench exceeds the limit movement range is made by the judgment circuit 57.

15. 发明专利

JP2000335899A WORK VEHICLE BOOM ACTUATION CONTROL DEVICE 失效
公开(公告)号：JP2000335899A
公开(公告)日：2000-12-05
申请号：JP14606599
申请日：1999-05-26
申请人： AICHI CORP KK
发明人： MORI KOICHIRO , OTA KAZUHIRO , OGAWA MASATO , OBA TAKAAKI , SAITO MASANOBU , SUDA MOTOAKI
IPC分类号： B66F9/24 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To horizontally or vertically move a tip part of a boom having an cylinder for telescoping provided in the boom interlocked with derricking action of the boom to move. SOLUTION: A current position determining circuit 41 of a controller 35 determines a current position of a bench based on detection values of a derricking angle sensor 31 and a telescoping quantity sensor 33, a target position of the bench is determined based on the determined current position and operation contents of a boom operation lever L1 by a target position setting circuit 43, a derricking cylinder telescoping quantity of a derricking cylinder 31 to move the bench horizontally or vertically is determined based on the determined target position by a derricking cylinder telescoping quantity determination circuit 45, and a telescoping cylinder telescoping quantity of a telescoping cylinder 17 itself added by a telescoping quantity of a straight telescoping boom by move of the straight telescoping boom of the telescoping cylinder 17 by an telescoping cylinder telescoping quantity determining circuit 47. An actuation control circuit 39 controls actuation of a derricking cylinder 21 and the telescoping cylinder 17 based on the derricking cylinder telescoping quantity and the telescoping cylinder telescoping quantity determined.

16. 发明专利

JPH11209084A TELESCOPIC BOOM 失效
公开(公告)号：JPH11209084A
公开(公告)日：1999-08-03
申请号：JP1365698
申请日：1998-01-27
申请人： AICHI CORP KK
发明人： KANAZAWA TAKAO , SAITO MASANOBU
IPC分类号： B66F9/06 , B66F11/04
摘要： PROBLEM TO BE SOLVED: To provide a boom with a link improved in balance on the strength of a parallel link by reducing the flexibility of an upper arm. SOLUTION: An end boom member 19 capable of projecting in and out of the opening 17a of an intermediate boom member 17 having an insert hole 17b is provided. The end boom member 19 includes a base 23 movable in the insert hole 17b and a parallel link 27 rotationally movable at the end of the base 23. The parallel link 27 includes a sectionally rectangular upper arm 29 with a large cross section and a lower arm 31 with a smaller cross section than that of the upper arm 29 extending in parallel to both outsides of the lower part of the upper arm 29. A pair of projections 33 put in slide contact with the inner face of the insert hole 17b when the parallel link 27 is inserted in the insert hole 17b are provided on the right and left outsides of the upper part of the upper arm 29 and slide planes are provided on the upper face and outside face of the projections 33. Slide planes put in slide contact with the bottom on the inner face of the insert hole 17b when the parallel link 27 is inserted in the insert hole 17b are provided on the outside face and the lower face of the lower arm 31.

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