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HYDRAULIC UNITS
HYDRAULIC PUMP
IV-8
TB53FR
OPERATION
Piston Pump
This pump is a variable displacement piston pump
with a single cylinder block, which discharges two
equal volumes.
Ten pistons (2) are installed in the cylinder block (1),
and the end surface is in contact with the valve plate
(3). The suction port C and the discharge port A of the
pump P1 and the discharge port B of the pump P2 are
arranged in the valve plate (3). On the other hand, the
swash plate (4) is fastened to the housing at a given
inclination, and the pistons (2) rotate along this swash
plate (4).
When the shaft (5) is rotated, the cylinder block (1)
rotates, the pistons (2) in the cylinder block execute
reciprocating movement along the swash plate (4),
and the pump executes suction and discharge. At this
time, the pistons in contact with the discharge port A
of the valve plate (3) operate as the pump P1, while the
pistons in contact with the discharge port B operate as
the pump P2.
In this way, the ten pistons (2) execute one suction and
discharge stroke with each revolution of the cylinder
block (1), so that suction and discharge are executed
continuously when the shaft (5) is rotated continu-
ously.
As the piston stroke displacement depends on the
inclination of the swash plate (4), the discharge flow
quantity can be changed by changing the inclination
of the awash plate (4).
Discharge volume control
The swash plate (4) is equipped with the bearings (6)
and is mounted on the housing at an inclination that
can be varied. The swash plate (4) is loaded with the
pistons (9) and the piston (10) in opposition to the
spring (7). The discharge pressures from the pumps
P1 and P2 work on the pistons (9). The discharge
pressure from the pump P3 works on the piston (10).
When the discharge pressure is below the value preset
for the spring (7), the inclination of the swash plate (4)
is fixed to the maximum value by the spring (7).
K3D111
4
2
1
3
C
A
B
P1
P2
SUCTION
DISCHARGE
SUCTION STROKE
DISCHAGE STROKE
Содержание TB53FR
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Страница 3: ...0 3 TB53FR...
Страница 6: ...0 6 TB53FR...
Страница 8: ...0 8 TB53FR...
Страница 9: ...I 1 TB53FR I GENERAL...
Страница 24: ...GENERAL I 16 TB53FR...
Страница 25: ...I 17 TB53FR II SPECIFICATIONS II 1...
Страница 53: ...II 29 TB53FR III MACHINE CONFIGURATION III 1...
Страница 60: ...MACHINE CONFIGURATION DRIVE SYSTEM III 8 TB53FR...
Страница 68: ...MACHINE CONFIGURATION TRAVEL SYSTEM III 16 TB53FR...
Страница 74: ...MACHINE CONFIGURATION UPPER FRAME III 22 TB53FR...
Страница 80: ...MACHINE CONFIGURATION CONTROL SYSTEM III 28 TB53FR...
Страница 86: ...MACHINE CONFIGURATION ATTACHMENTS III 34 TB53FR...
Страница 87: ...TB53FR HYDRAULIC SYSTEM III 35 HYDRAULIC SYSTEM HYDRAULIC CIRCUIT DIAGRAM MACHINE CONFIGURATION J1C700...
Страница 88: ...III 36 TB53FR HYDRAULIC SYSTEM MACHINE CONFIGURATION...
Страница 91: ...TB53FR ELECTRICAL SYSTEM III 39 ELECTRICAL SYSTEM ELECTRICAL WIRING DIAGRAM MACHINE CONFIGURATION J1C802...
Страница 92: ...TB53FR MACHINE CONFIGURATION ELECTRICAL SYSTEM III 40...
Страница 94: ...MACHINE CONFIGURATION ELECTRICAL SYSTEM III 42 TB53FR...
Страница 110: ...MACHINE CONFIGURATION INTERFERENCE PREVENTION SYSTEM III 58 TB53FR...
Страница 111: ...III 59 TB53FR IV HYDRAULIC UNITS IV 1...
Страница 144: ...HYDRAULIC UNITS HYDRAULIC PUMP IV 34 TB53FR...
Страница 166: ...HYDRAULIC UNITS CONTROL VALVE IV 56 TB53FR...
Страница 186: ...HYDRAULIC UNITS PILOT VALVE IV 76 TB53FR INSPECTION AND ADJUSTMENT IV 71 TROUBLESHOOTING IV 72...
Страница 267: ...IV 157 TB53FR V TROUBLESHOOTING V 1...
Страница 313: ...V 47 TB53FR VI ENGINE...
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