Hydraulic control device for monorail locomotive

Hydraulic control device for monorail locomotive

CN
  • CN 103,508,321 B
  • Filed: 09/22/2013
  • Issued: 06/24/2015
  • Est. Priority Date: 09/22/2013
  • Status: Active Grant
First Claim
Patent Images

1. a Hydraulic control device for monorail locomotive, comprises walking loop, Clamping Circuit, brake circuit, starting-up later time, Throttle Opening Control loop and lifting beam performance 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) produces high pressure oil for driving two way variable displacement pump (1) and slippage pump (53), two actuator ports of described two way variable displacement pump (1) are connected with the actuator port of the HM Hydraulic Motor (6) of several parallel connections, 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 by the oil outlet of DA control cock (56) with slippage pump (53), 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), first board-like ball valve (58), 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), first electro-hydraulic reversing valve (24) and the second electro-hydraulic reversing valve (46), described quantitative gear pump (2) is driven 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), first electro-hydraulic reversing valve (24) is connected with the oil inlet P of the second electro-hydraulic reversing valve (46), two actuator ports of described 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 second electro-hydraulic reversing valve (46) are connected with two hydraulic control hydraulic fluid ports of three position four-way directional control valve (57), be connected by the left side hydraulic control hydraulic fluid port of the first shuttle valve (59) with the second two four-way pilot operated directional control valves (45) simultaneously, one of them actuator ports of described the first two four-way pilot operated directional control valves (8) is connected with the import of the first board-like ball valve (58) with one of them actuator port of the second two four-way pilot operated directional control valves (45), the outlet of described 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), 3rd check valve (61), pressure sensor (27), little hydraulic accumulator (28), first by pass valve (43), clamping oil cylinder (29) and two covers pressure tester (62), two actuator ports of two way variable displacement pump (1) are connected with several clamping oil cylinders (29) with the 3rd check valve (61) respectively by the second check valve (60), pressure sensor (27) is connected with in loop, little hydraulic accumulator (28) and the first by pass valve (43), two covers pressure tester (62) are connected on the oil inlet place of clamping oil cylinder (29) respectively,Starting-up later time comprises hydraulic hand-pump (11), large hydraulic accumulator (12), pressure stop valve (13), second by pass valve (42), first two-position four-way hand valve (17), primer fluid pressure motor (18), second board-like ball valve (20), 4th check valve (63) and the 5th check valve (64), the oil outlet of hydraulic hand-pump (11) is connected by the oil inlet P of the second board-like ball valve (20) with the first two-position four-way hand valve (17), one of them actuator port of described 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) enters respectively by the 4th check valve (63) and the 5th check valve (64) and second board-like ball valve (20), 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 actuators (49), the oil outlet of described quantitative gear pump (2) is connected with the oil inlet of two Remote control valves (22) respectively by two tubular ball valves (21), 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 performance loop comprises low pressure ball valve (34), second two-position four-way hand valve (9), 6th check valve (65), 3rd by pass valve (66), 7th check valve (67) and four quick couplings (51), the oil outlet of quantitative gear pump (2) is connected by the oil inlet P of the 6th check valve (65) with the second two-position four-way hand valve (9), one of them actuator port of described second two-position four-way hand valve (9) is connected with wherein two quick couplings (51) by the 7th check valve (67), two other quick coupling (51) is connected with fuel tank (52), described 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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