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Full hydraulic Motor steering gear BZZ1-125A BZZ1-200A BZZ1-250A BZZ1-400A BZZ1-500A BZZ1-630A BZZ1-800A BZZ1-1000A
What parameter you need to send us :
If you need the gear pump , please send us the pump picture and machine model , so we can check it easily .
If you need the hydraulic pump parts , you can send us the size of the piston shoe , so we can check the parts according to the piston shoe size ,
but it will be better if you send me the nameplate of the pump and
pump picture .
Part No. | Part No. | Part No. | Part No. |
BZZ1-100A | BZZ1-200B | BZZ1-400C | BZZ5-200B |
BZZ1-100B | BZZ1-200C | BZZ1-500A | BZZ5-400B |
BZZ1-100C | BZZ1-250A | BZZ1-500B | BZZ5-500B |
BZZ1-125A | BZZ1-250B | BZZ1-500C | BZZ5-630B |
BZZ1-125B | BZZ1-250C | BZZ1-630A | BZZ5-800B |
BZZ1-125C | BZZ1-350A | BZZ1-630B | BZZ1-1000A |
BZZ1-160A | BZZ1-350B | BZZ1-630C | BZZ1-1000B |
BZZ1-160B | BZZ1-350C | BZZ1-800A | BZZ1-1000C |
BZZ1-160C | BZZ1-400A | BZZ1-800B | BZZ5-1000B |
BZZ1-200A | BZZ1-400B | BZZ1-800C |
Appliion | Used for Heli H2000 series CPCD20~30 |
Used for Heli H2000 series CPCD50~100, Baoli CPCD50~100 | |
Used for Hc H series CPCD20~35 | |
Used for Hc R series CPCD50~70 | |
Used for Hc R series CPCD40~50 | |
Used for Hc XF series CPQD30~35 | |
Used for Tcm FD20~30T6,Teu FD20~30 etc. |
The full-hydraulic steering gear is a hydraulic power steering type
which is connected between the steering wheel and the steering
control mechanism, does not need to be connected with a connecting
rod, has the advantages of light and flexible operation, simple
structure, low price, convenient installation and arrangement of
the complete machine and the like. At present, the cycloid type
full-hydraulic steering gear is widely used at home and abroad.
The full hydraulic steering gear is a kind of hydraulic power
steering type which does not need to be connected with connecting
rod between the steering wheel and the steering control mechanism.
it has the advantages of light and flexible control, simple
structure, cheap price and convenient installation and arrangement
of the whole machine. At present, cycloid full hydraulic steering
gear is widely used at home and abroad.
The operating principle of the BZZ full-hydraulic steering gear
(taking the BZZ1 type as an example) can be understood from the
hydraulic function diagram of the full hydraulic steering gear (as
shown in FIGS.1 and 2). It is easy to see that the working state of
the steering gear is divided into the neutral state from the
hydraulic function diagram. The left-turn and right-turn states are
3 working conditions.
When the steering gear is in the middle position, the valve core
and the valve sleeve are in the middle position under the action of
the spring piece, the oil from the oil pump is inserted into the
interior of the valve core through the valve sleeve and the valve
core end 2, and then flows back to the oil tank by the oil port T.
When the steering wheel turns to the right (or left), drive the
valve core to turn right (or left). Because there is a maximum
rotation of 10.5 °between the valve core and the valve sleeve, the
valve core will overcome the elasticity of the spring between the
valve core sleeve and the valve core sleeve, so the valve core will
rotate relative to the valve sleeve. At this time, the valve core
oil groove is connected to the inlet circuit of the valve sleeve,
and the oil supply of the pump flows from the valve sleeve to the
rotor and stator, pushing the rotor to rotate relative to the
stator, at the same time, The oil outlet between the rotor and the
stator passes through the valve sleeve and enters one cavity of the
steering cylinder through orifice A (or B), so that the piston rod
of the cylinder extends (shrink) and the steering wheel turns to
the right (or left), and the oil of the other cavity of the
cylinder goes from the oil orifice B (or A) to the oil orifice B
(or A). After entering the valve sleeve and passing through the
return tank of the valve core, the oil return hole of the valve
sleeve passes through the oil port T to return the fuel tank, so as
to realize the steering function.
When the relative rotation angle of the valve core valve sleeve is
about 1.5 °, the oil path begins to be turned on, and the rotation
of the rotor leads the oil to the cylinder, and the amount of oil
supplied is proportional to the rotation angle of the steering
wheel.
When the steering wheel turns to the right (or left) at the same
angle, the oil-driven rotor of the oil pump also turns to the right
(left) due to the opening of the above oil channel. When the
rotation angle of the rotor is the same as that of the steering
wheel, because the valve sleeve and rotor are connected by coupling
shaft and pin machinery, the rotor drive valve sleeve also rotates
to the right (or left) at the same angle as the steering wheel. At
this time, the valve sleeve and the valve core form a position
without relative rotation angle, the oil channel leading to the
rotor and cylinder is closed, so that the oil outlet of the oil
pump enters the valve core through the valve sleeve and the 2 rows
of small holes at the end of the valve core, and flows back to the
fuel tank through the oil return hole of the valve sleeve. At this
point, the tires Also stop the rotation, that is, hydraulic
feedback follow-up action.
When the engine flameout or the steering oil pump fails (when the
steering pump fails (when the steering wheel is turned by hand),
the steering wheel can be steering under static pressure. When the
steering wheel is turned right (left), the valve core turns at an
angle of 10.5 °, and the valve sleeve, coupling shaft and rotor are
driven by the dialing pin. When the rotor and the stator act as the
pump, the rotor will be sucked out through the oil port T, through
the one-way valve, the valve sleeve, and the valve core into the
oil inlet cavity of the rotor pump. Due to the action of the hand
rotating rotor pump, the oil produces pressure to enter one cavity
of the steering cylinder, so that the piston rod extends (shrink),
the wheel turns right (left), and the oil of the other cavity
passes through the valve sleeve from the oil port B (A), and then
the valve core. From the valve sleeve through the one-way valve to
the rotor pump oil intake cavity, constantly fill in the large
(small) cavity, to achieve steering.
Note: in order to ensure the realization of manpower steering, the
steering gear should not be installed above 0.5 m above the liquid
level of the tank in order to improve the oil absorption effect.