TH36680A - Hydraulic circuit system for hydraulic working machines. - Google Patents

Abstract

The DC60 (06/03/41) regulator (20) consists of a jointed piston 21 and a tilting control valve (22) which consists of cylinder (22a), spring (22b), control piston (22d). And the first stage pressure chamber (22e). With these components, the regulator (20) controls the tilting of the pump so that the intake flow of the pump Is reduced while the pressure at the receiver of the pump increases The tilting control valve (22) also includes a second pressure inlet (22f). When the gate lock lever (31) is used to slide the lock valve (30), the flow control valve (6) cannot be used. Can work And there is no movement even if the control lever (11a) is mistakenly touched and the unit will certainly not operate at the same time. The primary pilot pressure from the pilot cylinder (3) is introduced into the second pressure inlet (22f) of the tilting control valve (22), causing the pump tilt to be reduced to the lowest tilt (qmim). ), In the idle state where the operator does not intend to work, it is possible to have Minimal tilting of the hydraulic cylinder and reduced energy loss, the controller (20) consists of a jointed piston 21 and a tilting control valve (22) composed of a cylinder (22a), The spring (22b), the control piston (22d) and the first pressure inlet (22e) with these components, the regulator (20) controls the tilting of the pump by the intake flow of the pump Is reduced while the pressure at the receiver of the pump increases The tilting control valve (22) also includes a second pressure inlet (22f) when the lock lever (31) is used to slide the lock valve. (30), the flow control valve (6) will not be available. And there is no movement even if the control lever (11a) is mistakenly touched and the unit will certainly not operate at the same time. The primary pilot pressure from the pilot cylinder (3) is introduced into the second pressure inlet (22f) of the tilting control valve (22), causing the pump tilt to be reduced to the lowest tilt (qmim). ), In the idle state where the operator does not intend to work, it is possible to have Minimal tilt of the hydraulic pump and reduced energy losses.

Claims (7)

1.Hydraulic circuit system for a hydraulic operated machine consisting of a hydraulic cylinder. Click that can be scrolled multiple positions. Which is driven by preliminary motion, first stage tilt control path For controlling the movement of the hydraulic cylinder mentioned, the flow control valve to supply and receive hydraulic fluid from the hydraulic cylinder mentioned. And back from the actuator, working control method for driving the flow control valve mentioned for position change The command signals, and the safety control paths are provided within the functional control paths mentioned, especially the interference / dispenser. The signal path is mentioned where: The hydraulic circuit system is also referred to as a 2nd stage tilt control path for controlling the displacement of the hydraulic pump mentioned in the In harmony with the work of the coupled path Safety controls mentioned 2. Hydraulic circuit system for the hydraulic machine according to claim 1, where the tilting control path 2nd stage reduces the displacement of the hydraulic cylinder mentioned in In harmony with Work of the safety control system mentioned 3. Hydraulic circuit system for the hydraulic operated machine according to claim 2, where the secondary tilting control path controls the movement of the hydraulic cylinder mentioned in Synchronization With the work of the safety control methods mentioned To give the smallest value of movement In the range that can be obtained by the hydraulic cylinder mentioned 4. Hydraulic circuit system for the machine operated by hydraulic under claim 1 where the occurrence / dispenser via the mentioned command signal is cut. By means of safety control that The second stage tilting control method is mentioned, controlling the movement of the said hydraulic pump. To be less than the movement obtained from the first step tilt control path when the birth / dispenser Pass the command signal is not cut. And the flow control valve is in the middle position. 5. Hydraulic circuit system for the hydraulic operated machine according to claim 1 where the first tilting control method reduces the movement of the hydraulic pump mentioned. While the pressure at The entry of the hydraulic cylinder mentioned is increased, and the mentioned 2nd stage tilt control path controls the Controls the movement of the hydraulic pump mentioned in coordination with the operation of the control path. Safety mentioned So that less than the motion was made to happen By means of tilting control First, when the incoming pressure of the hydraulic cylinder is lowest. 6.Hydraulic circuit system for the machine operating hydraulically according to claim 1, where the mentioned step 1 tilt control path controls the movement of the hydraulic cylinder at Mention Work with the required flow rate by the mentioned flow control valve and when the flow control valve Mentioned in the middle position The control of the hydraulic pump movement mentioned makes it possible to have The flow rate in the preparation state is greater than the minimal flow of the hydraulic pump mentioned. And the mentioned 2nd stage tilt control path controls the movement of the hydraulic cylinder mentioned. In coordination with the operation of the safety control pathways discussed To be less than Displacement in which the flow rate in the prepared state is produced 7.Hydraulic circuit system for the hydraulic machine in accordance with claim 1, where such action control method is the pilot method for generating pressure. Command the signal mentioned, using pressure from the pilot hydraulic pressure source as the primary pressure, and the safety control path consists of a door lock that is activated when the operator does not. Intend to continue to use The aforementioned lever actuated lock valve was used by a regulator to cut the first stage of the pressure from the pilot hydraulic pressure source mentioned.