Transcript Слайд 1 - PSM Hydraulics

Fixed axial piston hydraulic motors
with block of safety relieve valves BOPK.20
with block of brake valves WBV.20
Q=200 l/min
for winches
1
Description
Fixed axial piston hydraulic motor
Block of safety relieve valves
Block of brake valves
Hydraulic motor design:
- fixed displacement
- bent axis axial piston
- standard flange
- cartridge type
Parameters of safety relieve valves:
- operating pressure
- 350 bar
- max pressure
- 400 bar
Functions:
- protection of pressure circuit against overload
- smooth and fine load lowering
- reliable locking aslope
- brake control of planetary gearbox
Parameters of brake valves:
- operating pressure
- max pressure
- max flow
- 350 bar
- 400 bar
- 200 l/min
Parameters of pressure reduction valve:
- reduced pressure
– 17…70 bar
2
T1
Hydraulic circuit
S
Gext
МА (В)
A (B)
B (A)
T2
Design:
M
PV
BV
OR
RV
А, В
Т1, Т2
S
T3
Gext
МА(В)
– hydraulic motor
– relieve charge valves
– brake valves
– logic valve «OR»
– pressure reducing valve
– working lines ports
– ports of hydraulic motor drain lines
– charge line port
– drain line port of brake valves block
– port of brake control line of planetary gearbox
– operating pressure control ports
3
Load lifting
During the load lifting operation the high pressure (red marked) flows through control valve into line«В» WBV. Part of the flow
in line В through valve «OR» gets into control line of brake valves BV1 and BV2, to reducing valve RV. Reduced pressure
opens the gearbox brake. Simultaneously the main flow passes through check valve of brake valve BV2 to operating line of
hydraulic motor. Hydraulic motor equally rotates while lifting the cargo. Uniform rotation is provided with brake valve BV1.
4
Load holding
After return of the main hydraulic control valve to neutral position in lines «А» and «В» the pressure straightens by decreasing
to the minimum. As a consequence brake valves BV1 and BV2 close, the reducing valve decreases the pressure in line
«Gext». The load stops with brake valve BV2 and is latched with gearbox brake .
5
Load lowering
During the downward movement the high pressure (red marked) passes though control valve to line «А» WBV. The flow part in
line А passes through valve «OR» to control line of brake valves BV1 and BV2, and to reducing valve RV. The reduced pressure
opens gearbox brake. The main flow passes through check valve of brake valve BV1 to operating line of hydraulic motor.
Hydraulic motor equally rotates while lowering the load. Uniform rotation is provided with brake valve BV2.
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Bosch-Rexroth
PSM-Hydraulics
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Bosch-Rexroth
PSM-Hydraulics
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Bosch-Rexroth
PSM-Hydraulics
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Thank you !
PSM-Hydraulics
Bosch-Rexroth
410.0.45.W.A1.F1F.NN.F.TB1
A2FM45/61W-VZL181 + BVD20W16L…
410.0.45.W.A2.F1F.NN.F.TB1
A2FM45/61W-VAL181 + BVD20W16L…
410.1.45.W.A1.F1F.NN.F.TB1
A2FE45/61W-VZL181 + BVD20W16L…
410.1.45.W.A2.F1F.NN.F.TB1
A2FE45/61W-VAL181 + BVD20W16L…
410.0.56.W.A1.F1F.NN.F.TB1
A2FM56/61W-VZL181 + BVD20W17L…
410.0.56.W.A2.F1F.NN.F.TB1
A2FM56/61W-VAL181 + BVD20W17L…
410.1.56.W.A1.F1F.NN.F.TB1
A2FE56/61W-VZL181 + BVD20W17L…
410.1.56.W.A2.F1F.NN.F.TB1
A2FE56/61W-VAL181 + BVD20W17L…
410.0.63.W.A1.F1F.NN.F.TB1
A2FM63/61W-VZL181 + BVD20W17L…
410.0.63.W.A2.F1F.NN.F.TB1
A2FM63/61W-VAL181 + BVD20W17L…
410.1.63.W.A1.F1F.NN.F.TB1
A2FE63/61W-VZL181 + BVD20W17L…
410.1.63.W.A2.F1F.NN.F.TB1
A2FE63/61W-VAL181 + BVD20W17L…
310.4.80.0F.FE.F.TB1
A2FM80/61W-VZL181 + BVD20W27L…
310.4.80.0E.FE.F.TB1
A2FM80/61W-VAL181 + BVD20W27L…
310.1.80.0F.FE.F.TB1
A2FE80/61W-VZL181 + BVD20W27L…
310.1.80.0E.FE.F.TB1
A2FE80/61W-VAL181 + BVD20W27L…
410.0.107.W.A3.F1F.NN.F.TB1
A2FM107/61W-VZL181 + BVD20W28L…
410.0.107.W.A4.F1F.NN.F.TB1
A2FM107/61W-VAL181 + BVD20W28L…
410.1.107.W.A3.F1F.NN.F.TB1
A2FE107/61W-VZL181 + BVD20W28L…
410.1.107.W.A4.F1F.NN.F.TB1
A2FE107/61W-VAL181 + BVD20W28L…
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