1. A lifting machinery of two reel differential type for two 40 feet container shore crane, comprising:
a motor;
a reductor and a high speed brake, said reductor connects to the motor;
a reel provided on the output end of the reductor; and
a reel brake connects to the reel;
wherein,
at least one motor is provided;
said reductor is a planetary differential reductor connects to the output end of the motor, said planetary differential reductor has a high speed input shaft, a low speed output shaft and a differential project shaft controlling power distribution; the output shaft of said motor connects to the high speed input shaft of the planetary differential reductor, at least one high speed brake is provided on the high speed input shaft of the planetary differential reductor;
said reel comprises a land side reel and sea side reel the two reels connect to the two speed output shafts of the planetary differential reductor, respectively; at least one reel brake is provided on each reel; and
a differential shaft brake controlling the power distribution of the planetary differential reductor, said differential shaft brake connects to the differential project shaft of the planetary differential reductor.
2. The lifting machinery of claim 1, wherein,
said land side reel andor said sea side reel is a four project rope reel having four project ropes;
wherein said land side four project rope reel connects to the land side low speed output shaft of the planetary differential reductor, the four project ropes of the land side four project rope reel connects to a hanger tool; and
said sea side four project rope reel connects to the sea side low speed output shaft of the planetary differential reductor, the four project ropes of the sea side four project rope reel connect to another hanger tool.
3. The lifting machinery of claim 1, wherein,
two motors are provided, one is the first motor and the other is the second motor;
the output end of the first motor connects to a high speed input shaft of the planetary differential reductor, two high speed brakes are provided on said high speed input shaft of the planetary differential reductor; and
the output end of the second motor connects to another high speed input shaft of the planetary differential reductor, two high speed brakes are provided on the high speed input shaft of the planetary differential reductor.
4. The lifting machinery of claim 1, wherein,
one motor is provided as the motor, the output end of the motor connects to a high speed input shaft of the planetary differential reductor; two high speed brake are provided on the high speed input shaft of the planetary differential reductor.
5. The lifting machinery of claim 1, wherein,
two reel brakes are provided on said land side four project rope reel; and
two reel brakes are provided on said sea side four project rope reel.
6. The lifting machinery of claim 1, wherein,
said differential shaft brake has a first differential shaft brake and a second differential shaft brake controlling the power distribution of the planetary differential reductor, the two differential shaft brakes connect to two differential project shaft of the planetary differential reductor, respectively.
7. The lifting machinery of claim 2, wherein,
two reel brakes are provided on said land side four project rope reel; and
two reel brakes are provided on said sea side four project rope reel.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A digital phase detector for the generation of a digital phase detection signal (PD_OUT), which specifies the phasing of an input clock signal (PD_IN) supplied to the phase detector with reference to a higher frequency sampling clock signal (CK_0, CK_90) supplied to the phase detector, comprising:
a digital adjustable phase displacement device (12) for the generation of an auxiliary sampling clock signal (CK<1:8>) as a digital adjusted phase displaced version of the sampling clock signal (CK_0, CK_90), wherein the auxiliary sampling clock signal (CK<1:8>) is adjustable in steps which in each case are smaller than one period of the sampling clock signal (CK_0, CK_90),
a sampling device (14) for the sampling of the input clock signal (PD_IN) with the auxiliary sampling clock signal (CK<1:8>), in order to generate a first, more significant digital component (OUT1 <9:0>) of the phase detection signal (PD_OUT),
an evaluation device (20, 22) for the evaluation of the first digital component (OUT1<9:0>) and for the generation of a digital control signal (s) on the basis of the evaluation result, by means of which the adjustable phase displacement device (12) is adjusted, and a second, less significant digital component (OUT2<12:0>) of the phase detection signal (PD_OUT) is generated,
an adding device (18) for the generation of the phase detection signal (PD OUT) by an addition of the first and second digital components (OUT1<9:0>, OUT2<12:0>) inputted to the adding device (18).
2. The phase detector according to claim 1, wherein the frequency of the sampling clock signal (CK_0, CK_90) is greater by at least a factor 101, than the frequency anticipated for the input clock signal (PD_IN).
3. The phase detector according to claim 1, wherein the auxiliary sampling clock signal (CK<1:8>) is provided with a plurality of phases (CK<1>, CK<2>, . . . ) in order to increase the phase resolution in the generation of the first digital component (PD_OUT<9:0>).
4. The phase detector according to claim 3, wherein the plurality of auxiliary sampling clock signal phases (CK<1>, CK<2>, . . . ) are equidistant from one another.
5. The phase detector according to claim 4, wherein each adjustment step of the phase displacement corresponds to a whole number fraction of the phase difference between auxiliary sampling clock signal phases (CK<1>, CK<2>, . . . ) that are adjacent to each other.
6. The phase detector according to claim 1, wherein each adjustment step of the phase displacement corresponds to a whole number fraction of the sampling signal period.
7. The phase detector according to claim 1, wherein the sampling clock signal (CK_0, CK_90) is provided with a plurality of sampling phases and the phase displacement device (12) is designed as a phase interpolator for the digitally adjustable interpolation between the sampling phases (CK_0, CK_90).
8. The phase detector according to claim 1, wherein the adjustment of the phase displacement is prescribed by an output signal (PHI<4:0>) of a modulo-integrator (24), to which is inputted the digital control signal (s) generated by the evaluation device (20).
9. The phase detector according to claim 1, wherein the evaluation device (20, 22) comprises a sign detector (20) to determine a sign of the first digital component (OUT1<9:0>).
10. A method for the generation of a digital phase detection signal (PD_OUT), which specifies the phasing of an input clock signal (PD_IN) with reference to a higher frequency sampling clock signal (CK_0, CK_90), comprising the steps:
generation of an auxiliary sampling clock signal (CK<1:8>) as a digitally adjusted phase displaced version of the sampling clock signal (CK_0, CK_90), wherein the auxiliary sampling clock signal (CK<1:8>) is adjustable in steps which in each case are smaller than one period of the sampling clock signal (CK_0, CK_90),
sampling of the input clock signal (PD_IN) with the auxiliary sampling clock signal (CK<1:8>), in order to generate a first, more significant digital component (OUT1<9:0>) of the phase detection signal (PD_OUT),
evaluation of the first digital component (OUT1 <9:0>) and generation of a digital control signal (s) on the basis of the evaluation result, by means of which the adjustable phase displacement provided by the generation of the auxiliary sampling clock signal (CK<1:8>) is adjusted, and a second, less significant digital component (OUT2<12:0>) of the phase detection signal (PD_OUT) is generated,
addition of the first and second digital components (OUT1<9:0>, OUT2<12:0>), in order to generate the digital phase detection signal (PD OUT).