Hydraulic control device for monorail locomotive

Hydraulic control device for monorail locomotive

CN
  • CN 103,508,321 A
  • Filed: 09/22/2013
  • Published: 01/15/2014
  • Est. Priority Date: 09/22/2013
  • Status: Active Application
First Claim
Patent Images

1. a monorail crane locomotive hydraulic control device, comprises walking loop, Clamping Circuit, brake circuit, startup loop, Throttle Opening Control loop and lifting beam work loop, is wherein characterised in that:

  • Described walking loop comprises diesel motor (3), two way variable displacement pump (1), slippage pump (53), stroking mechanism (54), DA control cock (56), pressure shut-off valve (68) and several HM Hydraulic Motor (6), described diesel motor (3) is for driving two way variable displacement pump (1) and slippage pump (53) to produce high pressure oil, the actuator port of the HM Hydraulic Motor (6) that two actuator ports of described two way variable displacement pump (1) are in parallel with several is connected, the swash plate of two way variable displacement pump (1) is controlled by stroking mechanism (54), two actuator ports of described stroking mechanism (54) are connected respectively at two actuator ports of three position four-way directional control valve (57), the oil inlet P of described three position four-way directional control valve (57) is connected with the oil outlet of slippage pump (53) by DA control cock (56), the oil inlet of described pressure shut-off valve (68) is connected with the oil inlet P of three position four-way directional control valve (57), the startup control port of pressure shut-off valve (68) is connected with two actuator ports of two way variable displacement pump (1) by shuttle valve, the oil outlet of described slippage pump (53) is connected with the oil inlet of low pressure relief valve (67),Braking and direction control circuit comprise quantitative gear pump (2), the first board-like ball valve (58), the first shuttle valve (59), the first two four-way pilot operated directional control valves (8), the second two four-way pilot operated directional control valves (45), brake cylinder (26), the first electro-hydraulic reversing valve (24) and the second electro-hydraulic reversing valve (46), described quantitative gear pump (2) drives by diesel motor (3), the oil outlet of quantitative gear pump (2) simultaneously with the first two four-way pilot operated directional control valves (8), the second two four-way pilot operated directional control valves (45), the oil inlet P of the first electro-hydraulic reversing valve (24) and the second electro-hydraulic reversing valve (46) is connected, two actuator ports of described the first electro-hydraulic reversing valve (24) are connected with two hydraulic control hydraulic fluid ports of the first two four-way pilot operated directional control valves (8) respectively, two actuator ports of described the second electro-hydraulic reversing valve (46) are connected with two hydraulic control hydraulic fluid ports of three position four-way directional control valve (57), by the first shuttle valve (59), be connected with the left side hydraulic control hydraulic fluid port of the second two four-way pilot operated directional control valves (45) simultaneously, one of them actuator port of one of them actuator port of described the first two four-way pilot operated directional control valves (8) and the second two four-way pilot operated directional control valves (45) is connected with the import of the first board-like ball valve (58), the outlet of described the first board-like ball valve (58) is connected with the rod chamber of some brake cylinders (26), in the rodless cavity of described brake cylinder (26), pressure spring is installed,Clamping Circuit comprises the second check valve (60), the 3rd check valve (61), pressure sensor (27), little hydraulic accumulator (28), the first by pass valve (43), clamping oil cylinder (29) and two cover pressure tester (62), two actuator ports of two way variable displacement pump (1) are connected with several clamping oil cylinders (29) by the second check valve (60) and the 3rd check valve (61) respectively, in loop, be connected with pressure sensor (27), little hydraulic accumulator (28) and the first by pass valve (43), two cover pressure tester (62) are connected on respectively the oil inlet place of clamping oil cylinder (29),Start loop and comprise hydraulic hand-pump (11), large hydraulic accumulator (12), pressure stop valve (13), the second by pass valve (42), the first two-position four-way hand valve (17), primer fluid pressure motor (18), the second board-like ball valve (20), the 4th check valve (63) and the 5th check valve (64), the oil outlet of hydraulic hand-pump (11) is connected with the oil inlet P of the first two-position four-way hand valve (17) by the second board-like ball valve (20), one of them actuator port of described the first two-position four-way hand valve (17) is connected with the oil inlet of primer fluid pressure motor (18), described large hydraulic accumulator (12) and the second by pass valve (42) are connected between hydraulic hand-pump (11) and the second board-like ball valve (20), the oil outlet of described quantitative gear pump (2) is entering by the 4th check valve (63) and the 5th check valve (64) and second board-like ball valve (20) respectively, oil outlet is connected, the oil inlet of described pressure stop valve (13) is connected with the oil outlet of quantitative gear pump (2),Throttle Opening Control loop comprises two tubular ball valves (21), two Remote control valves (22), the second shuttle valve (48) and hydraulic throttle actuator (49), the oil outlet of described quantitative gear pump (2) is connected with the oil inlet of two Remote control valves (22) by two tubular ball valves (21) respectively, and the oil outlet of two described Remote control valves (22) is connected with hydraulic throttle actuator (49) by the second shuttle valve (48);

    Lifting beam work loop comprises low pressure ball valve (34), the second two-position four-way hand valve (9), the 6th check valve (65), the 3rd by pass valve (66), the 7th check valve (67) and four quick couplings (51), the oil outlet of quantitative gear pump (2) is connected with the oil inlet P of the second two-position four-way hand valve (9) by the 6th check valve (65), one of them actuator port of described the second two-position four-way hand valve (9) is connected with two quick couplings (51) wherein by the 7th check valve (67), two other quick coupling (51) is connected with fuel tank (52), described the 3rd by pass valve (66) is connected between the 6th check valve (65) and the second two-position four-way hand valve (9).

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