CN112897334A - Oil-electricity hybrid power system of gantry crane and driving method - Google Patents

Oil-electricity hybrid power system of gantry crane and driving method Download PDF

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Publication number
CN112897334A
CN112897334A CN202110128319.2A CN202110128319A CN112897334A CN 112897334 A CN112897334 A CN 112897334A CN 202110128319 A CN202110128319 A CN 202110128319A CN 112897334 A CN112897334 A CN 112897334A
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CN
China
Prior art keywords
transmission shaft
clutch
rotate
bevel gear
gear
Prior art date
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Pending
Application number
CN202110128319.2A
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Chinese (zh)
Inventor
胡巳俊
郑挺
陈侠
张挺
李承钢
陈旭东
张智慧
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Ningbo Beilun Third Container Terminal Co Ltd
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Ningbo Beilun Third Container Terminal Co Ltd
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Publication date
Application filed by Ningbo Beilun Third Container Terminal Co Ltd filed Critical Ningbo Beilun Third Container Terminal Co Ltd
Priority to CN202110128319.2A priority Critical patent/CN112897334A/en
Publication of CN112897334A publication Critical patent/CN112897334A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
    • B66C9/14—Trolley or crane travel drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C11/00—Trolleys or crabs, e.g. operating above runways
    • B66C11/16—Rope, cable, or chain drives for trolleys; Combinations of such drives with hoisting gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C11/00—Trolleys or crabs, e.g. operating above runways
    • B66C11/16—Rope, cable, or chain drives for trolleys; Combinations of such drives with hoisting gear
    • B66C11/20—Arrangements, e.g. comprising differential gears, enabling simultaneous or selective operation of travelling and hoisting gear; Arrangements using the same rope or cable for both travelling and hoisting, e.g. in Temperley cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C15/00—Safety gear
    • B66C15/06—Arrangements or use of warning devices
    • B66C15/065—Arrangements or use of warning devices electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/12—Driving gear incorporating electric motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/14—Power transmissions between power sources and drums or barrels
    • B66D1/22—Planetary or differential gearings, i.e. with planet gears having movable axes of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F16H3/724—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously using external powered electric machines

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control And Safety Of Cranes (AREA)

Abstract

The invention belongs to the technical field of driving systems of gantry cranes, and particularly relates to an oil-electricity hybrid power system and a driving method of a gantry crane. The oil-electricity hybrid power system comprises a left support leg, a right support leg, a cross beam, an engine, a motor and a planet wheel. The power of the oil circuit engine is transmitted to the planet wheel through the sun wheel, the power of the circuit is also transmitted to the planet wheel through the matching of the first straight-tooth gear and the gear ring, the combination of the oil circuit and the two power of the circuit is realized, and the hybrid power is formed. And then the hybrid power is transmitted to the first transmission shaft through the planetary turntable. And then, the hybrid power is respectively transmitted to wheels, a sliding block and a lifting rope of the gantry crane, so that the overall movement of the gantry crane, the left-right translation of the lifting hook and the up-down movement of the lifting hook are realized. The power of the oil way and the electric power are combined to generate the hybrid power, so that the gantry crane can operate stably and efficiently, the oil consumption and the emission of waste gas can be reduced, the pollution to the environment is reduced, and the environment is protected.

Description

Oil-electricity hybrid power system of gantry crane and driving method
Technical Field
The invention belongs to the technical field of driving systems of gantry cranes, and particularly relates to an oil-electricity hybrid power system and a driving method of a gantry crane.
Background
The gantry crane is a variant of a bridge crane, is mainly used for cargo handling operation of outdoor goods yards and stock yards and indoor hoisting of large-scale factories, and has the characteristics of high site utilization rate, large operation range, wide application range, strong universality and the like. At present, a gantry crane widely used adopts an oil-fired engine as a driving device, so that the gantry crane has high oil consumption and great pollution to the environment, and does not accord with the development trend of energy conservation and environmental protection. Although some gantry cranes have used electric equipment as a driving device, the power consumption is very fast, and the charging is also very inconvenient, thereby reducing the overall efficiency. Therefore, a power system combining oil circuit driving and circuit driving needs to be designed, so that the effects of energy conservation and environmental protection are achieved on the premise of ensuring the working efficiency.
Disclosure of Invention
The invention provides an oil-electricity hybrid power system and a driving method of a gantry crane, aiming at solving the problem that a driving system of the gantry crane in the prior art does not have oil-electricity hybrid driving.
The technical scheme adopted by the invention is as follows:
an oil-electricity hybrid power system of a gantry crane comprises a left support leg, a right support leg and a cross beam, wherein an engine and a motor are fixed on the inner side of the top of the left support leg;
the output shaft of the engine is connected with a sun gear, and the engine drives the sun gear to rotate; a gear ring is annularly sleeved outside the sun wheel, a planet wheel is arranged between the sun wheel and the gear ring, the planet wheel is meshed with the inner side of the gear ring, and the planet wheel is meshed with the outer side of the sun wheel;
an output shaft of the motor is connected with a first straight-tooth gear, and the motor drives the first straight-tooth gear to rotate; the first straight-tooth gear is meshed with the outer side of the gear ring;
a first connecting rod is rotatably connected to one side of the right supporting leg of the planet wheel surface, and one end of the first connecting rod facing the right supporting leg is fixedly connected with a planet turntable;
a first transmission shaft is fixedly connected to one side of the right supporting leg of the planetary turntable surface, a threaded shaft is connected to one end of the first transmission shaft facing the right supporting leg, a first bevel gear and a second bevel gear are further fixed to the first transmission shaft, and the first bevel gear and the second bevel gear are both located between the planetary turntable and the threaded shaft;
the threaded shaft penetrates through the cross beam, the left end of the threaded shaft is positioned in the left support leg, and the right end of the threaded shaft is rotatably connected inside the right support leg; the threaded shaft is in threaded connection with a sliding block, and the sliding block is positioned inside the cross beam;
a third bevel gear is meshed below the first bevel gear, and the first bevel gear and the third bevel gear are vertical to each other; the bottom of the third bevel gear is vertically connected with a second transmission shaft, the bottom of the second transmission shaft is connected with a fourth bevel gear, the fourth bevel gear is meshed with a fifth bevel gear, and the center of the fifth bevel gear is fixedly provided with a wheel shaft;
a sixth bevel gear is meshed below the second bevel gear, and the second bevel gear and the sixth bevel gear are vertical to each other; the bottom of the sixth bevel gear is vertically connected with a third transmission shaft, a lifting rope is wound on the outer side of the third transmission shaft, one end of the lifting rope is fixedly connected with the third transmission shaft, and the other end of the lifting rope sequentially penetrates through the side wall of the left support leg, the side wall of the bottom of the sliding block and the lower end face of the bottom of the sliding block and is fixedly provided with a lifting hook.
The invention has the following beneficial effects: the sun wheel is driven to rotate by the engine, and then the planet wheel is driven to rotate by the sun wheel, so that the power generated by the engine is transmitted to the planet wheel; meanwhile, the motor drives the first straight-tooth gear to rotate, and then the first straight-tooth gear drives the gear ring and the planet gear to rotate, so that power generated by the motor is transmitted to the planet gear.
The two kinds of power generate hybrid power after the planetary gears converge, and then the planetary turnplate drives the first transmission shaft to rotate so as to transmit the hybrid power to the first transmission shaft.
And the first bevel gear on the first transmission shaft drives the third bevel gear, the second transmission shaft, the fourth bevel gear, the fifth bevel gear and the wheel shaft to rotate, so that the hybrid power is transmitted to wheels of the gantry crane, and the overall movement of the gantry crane is realized.
The second bevel gear on the first transmission shaft drives the sixth bevel gear and the third transmission shaft to rotate, and the lifting rope is driven to wind the third transmission shaft or to be wound on the third transmission shaft to be discharged, so that the hybrid power is transmitted to the lifting rope, and the lifting hook is moved up and down.
The first transmission shaft drives the threaded shaft to rotate and drives the sliding block to move left and right along the threaded shaft, so that the hybrid power is transmitted to the sliding block, and the sliding block drives the lifting hook to move left and right.
The power of the oil way and the electric power are combined to generate the hybrid power, so that the gantry crane can operate stably and efficiently, the oil consumption and the emission of waste gas can be reduced, the pollution to the environment is reduced, and the environment is protected.
Further, a first clutch and a fourth transmission shaft are sequentially arranged between the engine and the sun gear from left to right; an output shaft of the engine is fixedly connected with one side of the first clutch, the other side of the first clutch is fixedly connected with one end of the fourth transmission shaft, and the other end of the fourth transmission shaft is fixedly connected with the sun gear. The first clutch can be closed when the engine is required to work, and can be separated when the engine is not required to work, so that the waste of power and energy of the engine is avoided.
Further, a second clutch and a fifth transmission shaft are sequentially arranged between the motor and the first straight-tooth gear from left to right; an output shaft of the motor is fixedly connected with one side of the second clutch, the other side of the second clutch is fixedly connected with one end of the fifth transmission shaft, and the other end of the fifth transmission shaft is fixedly connected with the first straight-tooth gear. The second clutch can be closed again when the motor is needed to operate, and is separated when the motor is not needed to operate, so that the waste of power and energy of the motor is avoided.
When the first clutch is closed and the second clutch is separated, the gantry crane takes the power generated by the engine as the independent driving force.
When the first clutch is separated and the second clutch is closed, the gantry crane takes the power generated by the motor as the independent driving force.
Furthermore, a third clutch is arranged between the first transmission shaft and the threaded shaft, one side of the third clutch is fixedly connected with the first transmission shaft, and the other side of the third clutch is fixedly connected with the threaded shaft. The third clutch is used for controlling the power connection and the power disconnection between the first transmission shaft and the threaded shaft, so that the sliding block is controlled to slide left and right, and the lifting hook is driven to move left and right.
Further, a first generator is fixed on the inner side of the top of the right supporting leg, and the right end of the threaded shaft is connected with a power shaft of the first generator; the first generator is electrically connected with a storage battery and a transverse indicator light; the storage battery is fixed on the outer end face of the top of the left support leg; the transverse indicator lamps are fixed on the front end surface and the rear end surface of the cross beam. When the third clutch is closed, the threaded shaft starts to rotate, and the lifting hook is driven to move in the left-right direction. Meanwhile, the threaded shaft drives the first generator to start generating electricity. A part of the electric energy generated by the first generator enters the storage battery, and the other part of the electric energy is used for lightening the transverse indicator lamp. The transverse indicator light is turned on to warn that the lifting hook moves left and right, and surrounding operators are reminded not to approach.
Furthermore, a sixth transmission shaft and a fourth clutch are sequentially arranged between the third bevel gear and the second transmission shaft from top to bottom, and the fourth clutch is horizontally arranged; the bottom of the third bevel gear is fixedly connected with the top end of the sixth transmission shaft, the bottom end of the sixth transmission shaft is fixedly connected with the top end face of the fourth clutch, and the bottom end face of the fourth clutch is fixedly connected with the top end of the second transmission shaft. And the fourth clutch is closed to control the power connection and the power disconnection between the sixth transmission shaft and the second transmission shaft, so that the overall movement of the gantry crane is controlled.
Further, a second straight-tooth gear is fixed on the second transmission shaft, a third straight-tooth gear is meshed with one side of the second straight-tooth gear, a second generator is arranged at the bottom of the third straight-tooth gear, a power shaft of the second generator is fixedly connected with the third straight-tooth gear, and the second generator is fixed inside the left support leg; the second generator is electrically connected with the storage battery; the second generator is also electrically connected with a support leg indicator lamp which is fixed on the front and back end surfaces of the left support leg and the front and back end surfaces of the right support leg. When the fourth clutch is closed, the second transmission shaft and the fourth bevel gear start to rotate to drive wheels of the gantry crane to rotate. Meanwhile, the second straight-tooth gear and the third straight-tooth gear start to rotate to drive the second generator to start generating electricity. And one part of the electric power generated by the second generator enters the storage battery, and the other part of the electric power is used for lightening the support leg indicating lamp to warn that the whole gantry crane moves and remind surrounding operators not to approach.
Furthermore, a seventh transmission shaft and a fifth clutch are sequentially arranged between the sixth bevel gear and the third transmission shaft from top to bottom, and the fifth clutch is horizontally arranged; the bottom of the sixth bevel gear is fixedly connected with the top end of the seventh transmission shaft, the bottom end of the seventh transmission shaft is fixedly connected with the top end face of the fifth clutch, the bottom end face of the fifth clutch is fixedly connected with the top end of the third transmission shaft, a limit baffle is fixed on the third transmission shaft, and the winding position of the lifting rope on the third transmission shaft is located between the limit baffle and the fifth clutch. And the fifth clutch is used for controlling the power connection and power disconnection of the seventh transmission shaft and the third transmission shaft so as to control the up-and-down movement of the lifting hook. The limiting baffle is used for limiting the position of the lifting rope wound on the third transmission shaft.
Further, a third generator is arranged below the third transmission shaft, the third generator is fixed inside the left support leg, and a power shaft of the third generator is fixedly connected with the bottom end of the third transmission shaft; the third generator is electrically connected with the storage battery; the third generator is also electrically connected with longitudinal indicator lights which are fixed on the front and rear end surfaces of the cross beam. When the fifth clutch is closed, the third transmission shaft starts to rotate, so that the lifting hook is driven by the lifting rope to move up and down. Meanwhile, the third transmission shaft drives the third generator to start generating electricity. And one part of the electric power generated by the third generator enters the storage battery, and the other part of the electric power is used for lightening the longitudinal indicator lamp to warn that the lifting hook moves up and down and remind surrounding workers not to approach.
A gantry crane oil-electricity hybrid power driving method comprises an oil-electricity hybrid power system of a gantry crane, and comprises the following three modes:
oil-electricity hybrid mode:
the first clutch and the second clutch are closed, and the third clutch, the fourth clutch and the fifth clutch are separated;
the storage battery provides power for the motor, and the motor drives the first straight-tooth gear to rotate; then the first straight-tooth gear drives the gear ring to rotate, so that the planet gear is driven to rotate; meanwhile, the engine drives the sun wheel to rotate, and then the sun wheel drives the planet wheel to rotate;
the power generated by the motor and the power generated by the engine are converged at the planet wheel; then the planet wheel drives the planet turntable to rotate, so as to drive the first transmission shaft to rotate;
oil path driving mode:
the first clutch is closed, and the second clutch, the third clutch, the fourth clutch and the fifth clutch are all separated;
the engine drives the sun wheel to rotate, and then the sun wheel drives the planet wheel to rotate; the planet wheel drives the planet turntable to rotate, so that the first transmission shaft is driven to rotate;
a circuit driving mode:
the second clutch is closed, and the first clutch, the third clutch, the fourth clutch and the fifth clutch are all separated;
the storage battery provides power for the motor, and the motor drives the first straight-tooth gear to rotate; then the first straight-tooth gear drives the gear ring to rotate, so that the planet gear is driven to rotate; then the planet wheel drives the planet turntable to rotate, so that the first transmission shaft is driven to rotate;
after the first transmission shaft is driven to rotate by any one of the modes:
when the gantry crane needs to move integrally, the fourth clutch is closed; the first transmission shaft drives the first bevel gear to rotate, so that the third bevel gear is driven to rotate; the third bevel gear drives the second transmission shaft to rotate, so that the fourth bevel gear is driven to rotate; then, the fourth bevel gear drives the fifth bevel gear to rotate to drive the wheel shaft to rotate, so that the wheels are driven to rotate, and the gantry crane moves integrally; meanwhile, the rotation of the second transmission shaft drives the second straight-tooth gear to rotate, so that the third straight-tooth gear is driven to rotate; the third straight-tooth gear drives a power shaft of the second generator to rotate, so that the second generator starts to generate electricity, one part of the generated electricity enters the storage battery, the other part of the generated electricity supplies power for the support leg indicating lamp, and the support leg indicating lamp is lightened;
when the lifting hook of the gantry crane needs to move left and right, the third clutch is closed; the first transmission shaft drives the threaded shaft to rotate to drive the sliding block to move left and right, so that the lifting hook is driven to move left and right; meanwhile, the threaded shaft drives a power shaft of the first generator to rotate, so that the first generator starts to generate electricity, one part of the generated electricity enters the storage battery, the other part of the generated electricity supplies power for the transverse indicator light, and the transverse indicator light is lightened;
when the lifting hook of the gantry crane needs to move up and down, the fifth clutch is closed; the first transmission shaft drives the second bevel gear to rotate, the second bevel gear drives the sixth bevel gear to rotate, so that the third transmission shaft is driven to rotate, the lifting rope wound on the outer side of the third transmission shaft is released, and the lifting hook begins to descend; otherwise, the lifting hook rises; meanwhile, the third transmission shaft drives a power shaft of the third generator to rotate, so that the third generator starts to generate electricity, one part of the generated electricity enters the storage battery, the other part of the generated electricity supplies power for the longitudinal indicator light, and the longitudinal indicator light is turned on.
Drawings
Fig. 1 is an external structural schematic diagram of a gantry crane oil-electric hybrid power system according to an embodiment of the invention.
Fig. 2 is a schematic diagram of an internal structure of a gantry crane oil-electric hybrid power system according to an embodiment of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic view of the internal structure of the left foot according to the embodiment of the invention.
Fig. 5 is a partially enlarged view of B in fig. 4.
1-left leg, 2-right leg, 3-crossbeam, 4-engine, 5-motor, 6-sun gear, 7-gear ring, 8-planet gear, 9-first straight gear, 10-first connecting rod, 11-planet turntable, 12-first transmission shaft, 13-threaded shaft, 14-first bevel gear, 15-second bevel gear, 16-slider, 17-third bevel gear, 18-second transmission shaft, 19-fourth bevel gear, 20-fifth bevel gear, 21-wheel shaft, 22-sixth bevel gear, 23-third transmission shaft, 24-lifting rope, 25-first clutch, 26-fourth transmission shaft, 27-second clutch, 28-fifth transmission shaft, 29-third clutch, 30-a first generator, 31-a storage battery, 32-a transverse indicator light, 33-a sixth transmission shaft, 34-a fourth clutch, 35-a second straight-tooth gear, 36-a third straight-tooth gear, 37-a second generator, 38-a foot indicator light, 39-a seventh transmission shaft, 40-a fifth clutch, 41-a limit baffle, 42-a third generator and 43-a longitudinal indicator light.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
Examples
An oil-electricity hybrid power system of a gantry crane comprises a left support leg 1, a right support leg 2 and a cross beam 3, wherein an engine 4 and a motor 5 are fixed on the inner side of the top of the left support leg 1;
an output shaft of the engine 4 is connected with a sun gear 6, and the engine 4 drives the sun gear 6 to rotate; a gear ring 7 is annularly sleeved outside the sun gear 6, a planet gear 8 is arranged between the sun gear 6 and the gear ring 7, the planet gear 8 is meshed with the inner side of the gear ring 7, and the planet gear 8 is meshed with the outer side of the sun gear 6;
an output shaft of the motor 5 is connected with a first straight-tooth gear 9, and the motor 5 drives the first straight-tooth gear 9 to rotate; the first straight-tooth gear 9 is meshed with the outer side of the gear ring 7;
one side of the planet wheel 8 facing the right support leg 2 is rotatably connected with a first connecting rod 10, and one end of the first connecting rod 10 facing the right support leg 2 is fixedly connected with a planet turntable 11;
a first transmission shaft 12 is fixedly connected to one side of the planetary turntable 11 facing the right support leg 2, a threaded shaft 13 is connected to one end of the first transmission shaft 12 facing the right support leg 2, a first bevel gear 14 and a second bevel gear 15 are further fixed to the first transmission shaft 12, and the first bevel gear 14 and the second bevel gear 15 are both located between the planetary turntable 11 and the threaded shaft 13;
the threaded shaft 13 penetrates through the cross beam 3, the left end of the threaded shaft 13 is positioned in the left support leg 1, and the right end of the threaded shaft 13 is rotatably connected inside the right support leg 2; the threaded shaft 13 is in threaded connection with a sliding block 16, and the sliding block 16 is positioned inside the cross beam 3;
a third bevel gear 17 is meshed below the first bevel gear 14, and the first bevel gear 14 and the third bevel gear 17 are vertical to each other; the bottom of the third bevel gear 17 is vertically connected with a second transmission shaft 18, the bottom end of the second transmission shaft 18 is connected with a fourth bevel gear 19, the fourth bevel gear 19 is meshed with a fifth bevel gear 20, and a wheel shaft 21 is fixed at the center of the fifth bevel gear 20;
a sixth bevel gear 22 is meshed below the second bevel gear 15, and the second bevel gear 15 and the sixth bevel gear 22 are vertical to each other; the bottom of the sixth bevel gear 22 is vertically connected with a third transmission shaft 23, a lifting rope 24 is wound on the outer side of the third transmission shaft 23, one end of the lifting rope 24 is fixedly connected with the third transmission shaft 23, and the other end of the lifting rope 24 sequentially penetrates through the side wall of the left support leg 1, the side wall of the bottom of the sliding block 16 and the lower end face of the bottom of the sliding block 16 and is fixed with a lifting hook.
The sun wheel 6 is driven to rotate by the engine 4, and the planet wheel 8 is driven to rotate by the sun wheel 6, so that the power generated by the engine 4 is transmitted to the planet wheel 8; meanwhile, the motor 5 drives the first straight-tooth gear 9 to rotate, and the first straight-tooth gear 9 drives the gear ring 7 and the planet wheel 8 to rotate, so that power generated by the motor 5 is transmitted to the planet wheel 8.
The two kinds of power generate hybrid power after the planet wheels 8 converge, and then the planet turnplate 11 drives the first transmission shaft 12 to rotate, so that the hybrid power is transmitted to the first transmission shaft 12.
The first bevel gear 14 on the first transmission shaft 12 drives the third bevel gear 17, the second transmission shaft 18, the fourth bevel gear 19, the fifth bevel gear 20 and the wheel shaft 21 to rotate, so that the hybrid power is transmitted to wheels of the gantry crane, and the whole movement of the gantry crane is realized.
The second bevel gear 15 on the first transmission shaft 12 drives the sixth bevel gear 22 and the third transmission shaft 23 to rotate, and drives the lifting rope 24 to wind the third transmission shaft 23 or drives the lifting rope 24 wound on the third transmission shaft 23 to be discharged, so that the hybrid power is transmitted to the lifting rope 24, and the lifting hook moves up and down.
The first transmission shaft 12 drives the threaded shaft 13 to rotate, and drives the slider 16 to move left and right along the threaded shaft 13, so that the hybrid power is transmitted to the slider 16, and the slider 16 drives the lifting hook to move left and right.
The power of the oil way and the electric power are combined to generate the hybrid power, so that the gantry crane can operate stably and efficiently, the oil consumption and the emission of waste gas can be reduced, the pollution to the environment is reduced, and the environment is protected.
A first clutch 25 and a fourth transmission shaft 26 are sequentially arranged between the engine 4 and the sun gear 6 from left to right; an output shaft of the engine 4 is fixedly connected with one side of a first clutch 25, the other side of the first clutch 25 is fixedly connected with one end of a fourth transmission shaft 26, and the other end of the fourth transmission shaft 26 is fixedly connected with the sun gear 6. The first clutch 25 can be closed when the engine 4 is required to work, and can be separated when the engine 4 is not required to work, so that the waste of power and energy of the engine 4 is avoided.
A second clutch 27 and a fifth transmission shaft 28 are sequentially arranged between the motor 5 and the first straight-tooth gear 9 from left to right; an output shaft of the motor 5 is fixedly connected with one side of the second clutch 27, the other side of the second clutch 27 is fixedly connected with one end of the fifth transmission shaft 28, and the other end of the fifth transmission shaft 28 is fixedly connected with the first straight-tooth gear 9. The second clutch 27 can be closed when the motor 5 is needed to work, and can be separated when the motor 5 is not needed to work, so that the waste of power and energy of the motor 5 is avoided.
When the first clutch 25 is closed and the second clutch 27 is disengaged, the gantry crane uses the power generated by the engine 4 as a single driving force.
When the first clutch 25 is disengaged and the second clutch 27 is closed, the gantry crane takes the power generated by the motor 5 as a single driving force.
A third clutch 29 is arranged between the first transmission shaft 12 and the threaded shaft 13, one side of the third clutch 29 is fixedly connected with the first transmission shaft 12, and the other side of the third clutch 29 is fixedly connected with the threaded shaft 13. The third clutch 29 is used for controlling the power connection and power disconnection between the first transmission shaft 12 and the threaded shaft 13, so as to control the left-right sliding of the slider 16 and drive the left-right movement of the hook.
A first generator 30 is fixed on the inner side of the top of the right support leg 2, and the right end of the threaded shaft 13 is connected with a power shaft of the first generator 30; the first generator 30 is electrically connected with a storage battery 31 and a transverse indicator lamp 32; the storage battery 31 is fixed on the top outer end face of the left leg 1; the lateral direction indicator lamps 32 are fixed to the front and rear end faces of the cross member 3. When the third clutch 29 is closed, the screw shaft 13 starts to rotate, driving the hook to move in the left-right direction. At the same time, the threaded shaft 13 drives the first generator 30 to start generating electricity. A part of the electric power generated by the first generator 30 enters the battery 31 while another part is used to light the lateral indicator lamp 32. The lateral indicator light 32 lights up to alert the hook to move left and right to remind surrounding operators not to approach.
A sixth transmission shaft 33 and a fourth clutch 34 are sequentially arranged between the third bevel gear 17 and the second transmission shaft 18 from top to bottom, and the fourth clutch 34 is horizontally arranged; the bottom of the third bevel gear 17 is fixedly connected with the top end of the sixth transmission shaft 33, the bottom end of the sixth transmission shaft 33 is fixedly connected with the top end surface of the fourth clutch 34, and the bottom end surface of the fourth clutch 34 is fixedly connected with the top end of the second transmission shaft 18. The fourth clutch 34 is closed to control the power connection and power disconnection between the sixth transmission shaft 33 and the second transmission shaft 18, so that the overall movement of the gantry crane is controlled, and the forward and backward movement of the hook is realized.
A second straight-tooth gear 35 is fixed on the second transmission shaft 18, a third straight-tooth gear 36 is meshed with one side of the second straight-tooth gear 35, a second generator 37 is arranged at the bottom of the third straight-tooth gear 36, a power shaft of the second generator 37 is fixedly connected with the third straight-tooth gear 36, and the second generator 37 is fixed inside the left leg 1; the second generator 37 is electrically connected to the battery 31; the second generator 37 is also electrically connected with foot indicator lamps 38, and the foot indicator lamps 38 are fixed on the front and rear end surfaces of the left foot 1 and the front and rear end surfaces of the right foot 2. When the fourth clutch 34 is closed, the second transmission shaft 18 and the fourth bevel gear 19 start to rotate, and the wheels of the gantry crane are driven to rotate. At the same time, the second spur gear 35 and the third spur gear 36 start to rotate, driving the second generator 37 to start generating electricity. A part of the electric power generated by the second generator 37 enters the battery 31, while the other part is used for lighting the leg indicator lamp 38, so as to warn that the whole gantry crane is moving and remind surrounding operators not to approach.
A seventh transmission shaft 39 and a fifth clutch 40 are sequentially arranged between the sixth bevel gear 22 and the third transmission shaft 23 from top to bottom, and the fifth clutch 40 is horizontally arranged; the bottom of the sixth bevel gear 22 is fixedly connected with the top end of a seventh transmission shaft 39, the bottom end of the seventh transmission shaft 39 is fixedly connected with the top end surface of a fifth clutch 40, the bottom end surface of the fifth clutch 40 is fixedly connected with the top end of a third transmission shaft 23, a limit baffle 41 is fixed on the third transmission shaft 23, and the winding position of the lifting rope 24 on the third transmission shaft 23 is located between the limit baffle 41 and the fifth clutch 40. The fifth clutch 40 is used to control the power connection and disconnection of the seventh transmission shaft 39 and the third transmission shaft 23, thereby controlling the up-and-down movement of the hook. The limit stop 41 is used for limiting the position of the lifting rope 24 wound on the third transmission shaft 23.
A third generator 42 is arranged below the third transmission shaft 23, the third generator 42 is fixed inside the left leg 1, and a power shaft of the third generator 42 is fixedly connected with the bottom end of the third transmission shaft 23; the third generator 42 is electrically connected to the battery 31; the third generator 42 is also electrically connected with longitudinal indicator lamps 43, and the longitudinal indicator lamps 43 are fixed on the front and rear end surfaces of the cross beam 3. When the fifth clutch 40 is closed, the third transmission shaft 23 starts to rotate, thereby moving the hook up and down through the lifting rope 24. At the same time, the third transmission shaft 23 drives the third generator 42 to start generating electricity. A part of the electric power generated by the third generator 42 enters the battery 31, while the other part is used to light the longitudinal indicator lamp 43, warning that the hook is moving up and down, and warning surrounding workers not to approach.
The third clutch 29, the fourth clutch 34 and the fifth clutch 40 can be closed individually, and the hooks can move in the left-right direction alone or in the front-back direction alone or in the up-down direction alone. And the lifting hook can be closed simultaneously, and the left and right directions, the up and down directions and the front and back directions of the lifting hook can be moved simultaneously. Any two of the lifting hooks can be closed, and the lifting hooks can move simultaneously in two directions.
A gantry crane oil-electricity hybrid power driving method comprises an oil-electricity hybrid power system of a gantry crane, and comprises the following three modes:
oil-electricity hybrid mode:
the first clutch 25 and the second clutch 27 are both closed, and the third clutch 29, the fourth clutch 34 and the fifth clutch 40 are all disengaged;
the storage battery 31 supplies power to the motor 5, and the motor 5 drives the first straight-tooth gear 9 to rotate; then the first straight-tooth gear 9 drives the gear ring 7 to rotate, so that the planet gear 8 is driven to rotate; the transmission direction of the power is motor 5, fifth transmission shaft 28, first straight-tooth gear 9, gear ring 7 and planet gear 8;
meanwhile, the engine 4 drives the sun wheel 6 to rotate, and then the sun wheel 6 drives the planet wheel 8 to rotate; the transmission direction of the power is the engine 4, the fourth transmission shaft 26, the sun wheel 6 and the planet wheel 8;
the power generated by the motor 5 and the power generated by the engine 4 are merged at the planetary gear 8; then the planet wheel 8 drives the planet turntable 11 to rotate, so as to drive the first transmission shaft 12 to rotate;
oil path driving mode:
the first clutch 25 is closed, and the second clutch 27, the third clutch 29, the fourth clutch 34 and the fifth clutch 40 are all disengaged;
the engine 4 drives the sun wheel 6 to rotate, and then the sun wheel 6 drives the planet wheel 8 to rotate; the planet wheel 8 drives the planet turntable 11 to rotate, so as to drive the first transmission shaft 12 to rotate;
a circuit driving mode:
the second clutch 27 is closed, and the first clutch 25, the third clutch 29, the fourth clutch 34 and the fifth clutch 40 are all disengaged;
the storage battery 31 supplies power to the motor 5, and the motor 5 drives the first straight-tooth gear 9 to rotate; then the first straight-tooth gear 9 drives the gear ring 7 to rotate, so that the planet gear 8 is driven to rotate; then the planet wheel 8 drives the planet turntable 11 to rotate, so as to drive the first transmission shaft 12 to rotate;
after the first transmission shaft 12 is driven to rotate by any one of the modes:
when the gantry crane needs to move integrally, the fourth clutch 34 is closed; the first transmission shaft 12 drives the first bevel gear 14 to rotate, so as to drive the third bevel gear 17 to rotate; the third bevel gear 17 drives the second transmission shaft 18 to rotate, so that the fourth bevel gear 19 is driven to rotate; then, the fourth bevel gear 19 drives the fifth bevel gear 20 to rotate to drive the wheel shaft 21 to rotate, so that the wheels are driven to rotate, and the gantry crane moves integrally; meanwhile, the rotation of the second transmission shaft 18 drives the second straight-tooth gear 35 to rotate, so as to drive the third straight-tooth gear 36 to rotate; the third straight-tooth gear 36 drives the power shaft of the second generator 37 to rotate, so that the second generator 37 starts to generate electricity, one part of the generated electricity enters the storage battery 31, the other part of the generated electricity supplies power for the support leg indicator lamp 38, and the support leg indicator lamp 38 is turned on;
when the lifting hook of the gantry crane needs to move left and right, the third clutch 29 is closed; the first transmission shaft 12 drives the threaded shaft 13 to rotate to drive the sliding block 16 to move left and right, so that the lifting hook is driven to move left and right; meanwhile, the threaded shaft 13 drives the power shaft of the first generator 31 to rotate, so that the first generator 31 starts to generate electricity, one part of the generated electricity enters the storage battery 31, the other part of the generated electricity supplies power for the transverse indicator lamp 32, and the transverse indicator lamp 32 is turned on;
when the lifting hook of the gantry crane needs to move up and down, the fifth clutch 40 is closed; the first transmission shaft 12 drives the second bevel gear 15 to rotate, the second bevel gear 15 drives the sixth bevel gear 22 to rotate, so as to drive the third transmission shaft 23 to rotate, the lifting rope wound on the outer side of the third transmission shaft 23 is released, and the lifting hook begins to descend; otherwise, the lifting hook rises; meanwhile, the third transmission shaft 23 drives the power shaft of the third generator 42 to rotate, so that the third generator 42 starts to generate electricity, one part of the generated electricity enters the storage battery 31, the other part of the generated electricity supplies power to the longitudinal indicator lamp 43, and the longitudinal indicator lamp 43 is turned on.
It is to be understood that: although the present invention has been described in considerable detail with reference to certain embodiments thereof, it is not intended to limit the scope of the invention to the exact details described and illustrated, and it is understood that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a hybrid power system of oil electricity of portal crane, includes left branch foot (1), right branch foot (2) and crossbeam (3), its characterized in that: an engine (4) and a motor (5) are fixed on the inner side of the top of the left leg (1);
an output shaft of the engine (4) is connected with a sun gear (6), and the engine (4) drives the sun gear (6) to rotate; a gear ring (7) is sleeved on the outer side of the sun wheel (6) in a surrounding manner, a planet wheel (8) is arranged between the sun wheel (6) and the gear ring (7), the planet wheel (8) is meshed with the inner side of the gear ring (7), and the planet wheel (8) is meshed with the outer side of the sun wheel (6);
an output shaft of the motor (5) is connected with a first straight-tooth gear (9), and the motor (5) drives the first straight-tooth gear (9) to rotate; the first straight-tooth gear (9) is meshed with the outer side of the gear ring (7);
one side of the planet wheel (8) facing the right support leg (2) is rotatably connected with a first connecting rod (10), and one end of the first connecting rod (10) facing the right support leg (2) is fixedly connected with a planet turntable (11);
one side of the planetary turntable (11) facing the right supporting leg (2) is fixedly connected with a first transmission shaft (12), one end of the first transmission shaft (12) facing the right supporting leg (2) is connected with a threaded shaft (13), the first transmission shaft (12) is further fixed with a first bevel gear (14) and a second bevel gear (15), and the first bevel gear (14) and the second bevel gear (15) are both positioned between the planetary turntable (11) and the threaded shaft (13);
the threaded shaft (13) penetrates through the cross beam (3), the left end of the threaded shaft (13) is positioned in the left support leg (1), and the right end of the threaded shaft (13) is rotatably connected inside the right support leg (2); the threaded shaft (13) is in threaded connection with a sliding block (16), and the sliding block (16) is positioned inside the cross beam (3);
a third bevel gear (17) is meshed below the first bevel gear (14), and the first bevel gear (14) and the third bevel gear (17) are vertical to each other; the bottom of the third bevel gear (17) is vertically connected with a second transmission shaft (18), the bottom end of the second transmission shaft (18) is connected with a fourth bevel gear (19), the fourth bevel gear (19) is meshed with a fifth bevel gear (20), and the center of the fifth bevel gear (20) is fixedly provided with a wheel shaft (21);
a sixth bevel gear (22) is meshed below the second bevel gear (15), and the second bevel gear (15) and the sixth bevel gear (22) are vertical to each other; the bottom of the sixth bevel gear (22) is vertically connected with a third transmission shaft (23), a lifting rope (24) is wound on the outer side of the third transmission shaft (23), one end of the lifting rope (24) is fixedly connected with the third transmission shaft (23), and the other end of the lifting rope (24) sequentially penetrates through the side wall of the left support leg (1), the side wall of the bottom of the sliding block (16) and the lower end face of the bottom of the sliding block (16) and is fixed with a lifting hook.
2. The oil-electric hybrid power system of the gantry crane according to claim 1, characterized in that: a first clutch (25) and a fourth transmission shaft (26) are sequentially arranged between the engine (4) and the sun gear (6) from left to right; an output shaft of the engine (4) is fixedly connected with one side of the first clutch (25), the other side of the first clutch (25) is fixedly connected with one end of the fourth transmission shaft (26), and the other end of the fourth transmission shaft (26) is fixedly connected with the sun gear (6).
3. The oil-electric hybrid system of the gantry crane according to claim 1 or 2, characterized in that: a second clutch (27) and a fifth transmission shaft (28) are sequentially arranged between the motor (5) and the first straight-tooth gear (9) from left to right; an output shaft of the motor (5) is fixedly connected with one side of a second clutch (27), the other side of the second clutch (27) is fixedly connected with one end of a fifth transmission shaft (28), and the other end of the fifth transmission shaft (28) is fixedly connected with a first straight-tooth gear (9).
4. The oil-electric hybrid power system of the gantry crane according to claim 3, wherein: a third clutch (29) is arranged between the first transmission shaft (12) and the threaded shaft (13), one side of the third clutch (29) is fixedly connected with the first transmission shaft (12), and the other side of the third clutch (29) is fixedly connected with the threaded shaft (13).
5. The oil-electric hybrid power system of the gantry crane according to claim 4, wherein: a first generator (30) is fixed on the inner side of the top of the right support leg (2), and the right end of the threaded shaft (13) is connected with a power shaft of the first generator (30); the first generator (30) is electrically connected with a storage battery (31) and a transverse indicator lamp (32); the storage battery (31) is fixed on the outer end face of the top of the left leg (1); the transverse indicator lamps (32) are fixed on the front end surface and the rear end surface of the cross beam (3).
6. The oil-electric hybrid power system of the gantry crane according to claim 5, wherein: a sixth transmission shaft (33) and a fourth clutch (34) are sequentially arranged between the third bevel gear (17) and the second transmission shaft (18) from top to bottom, and the fourth clutch (34) is horizontally arranged; the bottom of the third bevel gear (17) is fixedly connected with the top end of a sixth transmission shaft (33), the bottom end of the sixth transmission shaft (33) is fixedly connected with the top end face of a fourth clutch (34), and the bottom end face of the fourth clutch (34) is fixedly connected with the top end of the second transmission shaft (18).
7. The oil-electric hybrid power system of the gantry crane according to claim 6, wherein: a second straight-tooth gear (35) is fixed on the second transmission shaft (18), a third straight-tooth gear (36) is meshed with one side of the second straight-tooth gear (35), a second generator (37) is arranged at the bottom of the third straight-tooth gear (36), a power shaft of the second generator (37) is fixedly connected with the third straight-tooth gear (36), and the second generator (37) is fixed inside the left support leg (1); the second generator (37) is electrically connected with the storage battery (31); the second generator (37) is also electrically connected with a support leg indicator lamp (38), and the support leg indicator lamp (38) is fixed on the front and back end surfaces of the left support leg (1) and the front and back end surfaces of the right support leg (2).
8. The oil-electric hybrid power system of the gantry crane according to claim 7, wherein: a seventh transmission shaft (39) and a fifth clutch (40) are sequentially arranged between the sixth bevel gear (22) and the third transmission shaft (23) from top to bottom, and the fifth clutch (40) is horizontally arranged; the bottom of the sixth bevel gear (22) is fixedly connected with the top end of the seventh transmission shaft (39), the bottom end of the seventh transmission shaft (39) is fixedly connected with the top end face of the fifth clutch (40), the bottom end face of the fifth clutch (40) is fixedly connected with the top end of the third transmission shaft (23), a limit baffle (41) is fixed on the third transmission shaft (23), and the winding position of the lifting rope (24) on the third transmission shaft (23) is located between the limit baffle (41) and the fifth clutch (40).
9. The oil-electric hybrid power system of the gantry crane according to claim 8, wherein: a third generator (42) is arranged below the third transmission shaft (23), the third generator (42) is fixed inside the left support leg (1), and a power shaft of the third generator (42) is fixedly connected with the bottom end of the third transmission shaft (23); the third generator (42) is electrically connected with the storage battery (31); the third generator (42) is also electrically connected with longitudinal indicator lights (43), and the longitudinal indicator lights (43) are fixed on the front end face and the rear end face of the cross beam (3).
10. A method for driving a gantry crane by oil-electricity hybrid power is characterized by comprising the following steps: the hybrid power system of oil and electricity including a gantry crane according to claim 9, wherein the driving method includes the following three modes:
oil-electricity hybrid mode:
the first clutch (25) and the second clutch (27) are closed, and the third clutch (29), the fourth clutch (34) and the fifth clutch (40) are separated;
the storage battery (31) provides power for the motor (5), and the motor (5) drives the first straight-tooth gear (9) to rotate; then the first straight-tooth gear (9) drives the gear ring (7) to rotate, so that the planet gear (8) is driven to rotate;
meanwhile, the engine (4) drives the sun wheel (6) to rotate, and then the sun wheel (6) drives the planet wheel (8) to rotate;
the power generated by the motor (5) and the power generated by the engine (4) are converged at the planetary gear (8); then the planet wheel (8) drives the planet turntable (11) to rotate, so that the first transmission shaft (12) is driven to rotate;
oil path driving mode:
the first clutch (25) is closed, and the second clutch (27), the third clutch (29), the fourth clutch (34) and the fifth clutch (40) are all separated;
the engine (4) drives the sun wheel (6) to rotate, and then the sun wheel (6) drives the planet wheel (8) to rotate; the planet wheel (8) drives the planet turntable (11) to rotate, so that the first transmission shaft (12) is driven to rotate;
a circuit driving mode:
the second clutch (27) is closed, and the first clutch (25), the third clutch (29), the fourth clutch (34) and the fifth clutch (40) are all separated;
the storage battery (31) provides power for the motor (5), and the motor (5) drives the first straight-tooth gear (9) to rotate; then the first straight-tooth gear (9) drives the gear ring (7) to rotate, so that the planet gear (8) is driven to rotate; then the planet wheel (8) drives the planet turntable (11) to rotate, so that the first transmission shaft (12) is driven to rotate;
after the first transmission shaft (12) is driven to rotate by any one of the modes:
when the gantry crane needs to move integrally, the fourth clutch (34) is closed; the first transmission shaft (12) drives the first bevel gear (14) to rotate, so that the third bevel gear (17) is driven to rotate; the third bevel gear (17) drives the second transmission shaft (18) to rotate, so that the fourth bevel gear (19) is driven to rotate; then, a fifth bevel gear (20) is driven to rotate by a fourth bevel gear (19) to drive a wheel shaft (21) to rotate, so that wheels are driven to rotate, and the gantry crane moves integrally; meanwhile, the rotation of the second transmission shaft (18) drives the second straight-tooth gear (35) to rotate, so that the third straight-tooth gear (36) is driven to rotate; the third straight-tooth gear (36) drives a power shaft of the second generator (37) to rotate, so that the second generator (37) starts to generate electricity, one part of the generated electricity enters the storage battery (31), the other part of the generated electricity supplies power to the support leg indicator lamp (38), and the support leg indicator lamp (38) is turned on;
when the lifting hook of the gantry crane needs to move left and right, the third clutch (29) is closed; the first transmission shaft (12) drives the threaded shaft (13) to rotate to drive the sliding block (16) to move left and right, so that the lifting hook is driven to move left and right; meanwhile, the threaded shaft (13) drives a power shaft of the first generator (31) to rotate, so that the first generator (31) starts to generate electricity, one part of the generated electricity enters the storage battery (31), the other part of the generated electricity supplies power for the transverse indicator lamp (32), and the transverse indicator lamp (32) is lightened;
when the lifting hook of the gantry crane needs to move up and down, the fifth clutch (40) is closed; the first transmission shaft (12) drives the second bevel gear (15) to rotate, the second bevel gear (15) drives the sixth bevel gear (22) to rotate, so that the third transmission shaft (23) is driven to rotate, a lifting rope wound on the outer side of the third transmission shaft (23) is released, and the lifting hook begins to descend; otherwise, the lifting hook rises; meanwhile, the third transmission shaft (23) drives the power shaft of the third generator (42) to rotate, so that the third generator (42) starts to generate electricity, one part of the generated electricity enters the storage battery (31), the other part of the generated electricity supplies power to the longitudinal indicator lamp (43), and the longitudinal indicator lamp (43) is turned on.
CN202110128319.2A 2021-01-29 2021-01-29 Oil-electricity hybrid power system of gantry crane and driving method Pending CN112897334A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110128319.2A CN112897334A (en) 2021-01-29 2021-01-29 Oil-electricity hybrid power system of gantry crane and driving method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110128319.2A CN112897334A (en) 2021-01-29 2021-01-29 Oil-electricity hybrid power system of gantry crane and driving method

Publications (1)

Publication Number Publication Date
CN112897334A true CN112897334A (en) 2021-06-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110128319.2A Pending CN112897334A (en) 2021-01-29 2021-01-29 Oil-electricity hybrid power system of gantry crane and driving method

Country Status (1)

Country Link
CN (1) CN112897334A (en)

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