A hybrid oil-electric system and driving method for gantry crane

Abstract

The present invention belongs to the technical field of the driving system of a gantry crane, and specifically refers to an oil-electric hybrid power system and a driving method of a gantry crane. The oil-electric hybrid power system includes a left support leg, a right support leg and a crossbeam, an engine, a motor and a planetary gear. The power of the oil circuit engine is transmitted to the planetary gear through the sun gear, and the power of the circuit is also transmitted to the planetary gear through the cooperation of the first spur gear and the ring gear, thereby realizing the merging of the two powers of the oil circuit and the circuit to form a hybrid power. The hybrid power is then transmitted to the first transmission shaft through the planetary turntable. Then, the hybrid power is transmitted to the wheels, sliders and ropes of the gantry crane respectively, so as to realize the overall movement of the gantry crane, the left and right translation of the hook, and the up and down movement of the hook. Combining the oil circuit power and electricity to generate hybrid power can not only make the gantry crane operate stably and efficiently, but also reduce fuel consumption and exhaust emissions, reduce pollution to the environment, and is of great help to protect the environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of drive systems for gantry cranes, and specifically refers to an oil-electric hybrid power system and a drive method for a gantry crane. Background Art

[0002] Gantry crane is a variation of bridge crane, mainly used for cargo loading and unloading operations in outdoor cargo yards and material yards, as well as indoor lifting in some large factories. It has the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility. At present, the widely used gantry crane uses oil-burning engines as driving equipment, which not only consumes a lot of fuel, but also pollutes the environment greatly, which is not in line with the human development trend of energy conservation and environmental protection. Although some gantry cranes have adopted electric equipment as driving devices, the power consumption is very fast, and charging is also very inconvenient, which reduces the overall efficiency. Therefore, it is necessary to design a power system that can combine oil circuit drive and circuit drive, so as to achieve energy conservation and environmental protection under the premise of ensuring work efficiency. Summary of the invention

[0003] In order to solve the problem that the driving system of the gantry crane in the prior art has no oil-electric hybrid drive, the present invention provides an oil-electric hybrid power system and a driving method for the gantry crane.

[0004] The technical solution adopted by the present invention is:

[0005] A hybrid power system of a gantry crane comprises a left support leg, a right support leg and a crossbeam, wherein an engine and a motor are fixed to the inner side of the top of the left support leg;

[0006] The output shaft of the engine is connected to the sun gear, and the engine drives the sun gear to rotate; the outer ring of the sun gear is sleeved with a gear ring, and a planetary gear is arranged between the sun gear and the gear ring, and the planetary gear meshes with the inner side of the gear ring, and the planetary gear meshes with the outer side of the sun gear;

[0007] The output shaft of the motor is connected to the first spur gear, and the motor drives the first spur gear to rotate; the first spur gear is meshed with the outer side of the gear ring;

[0008] The side of the planetary wheel facing the right support leg is rotatably connected to the first connecting rod, and the end of the first connecting rod facing the right support leg is fixedly connected to the planetary turntable;

[0009] A first transmission shaft is fixedly connected to one side of the planetary turntable facing the right support leg, a threaded shaft is connected to one end of the first transmission shaft facing the right support leg, a first bevel gear and a second bevel gear are also fixed on the first transmission shaft, and both the first bevel gear and the second bevel gear are located between the planetary turntable and the threaded shaft;

[0010] The threaded shaft passes through the cross beam, the left end of the threaded shaft is located in the left support leg, and the right end of the threaded shaft is rotatably connected to the inside of the right support leg; a slider is threadedly connected to the threaded shaft, and the slider is located inside the cross beam;

[0011] A third bevel gear is meshed below the first bevel gear, and the first bevel gear and the third bevel gear are perpendicular to each other; a second transmission shaft is vertically connected to the bottom of the third bevel gear, a fourth bevel gear is connected to the bottom end of the second transmission shaft, a fifth bevel gear is meshed with the fourth bevel gear, and a wheel axle is fixed to the center of the fifth bevel gear;

[0012] A sixth bevel gear is meshed below the second bevel gear, and the second bevel gear and the sixth bevel gear are perpendicular to each other; a third transmission shaft is vertically connected to the bottom of the sixth bevel gear, a lifting rope is wrapped around the outside of the third transmission shaft, one end of the lifting rope is fixedly connected to the third transmission shaft, and the other end of the lifting rope passes through the side wall of the left support leg, the side wall of the bottom of the slider and the lower end face of the bottom of the slider in sequence and is fixed with a lifting hook.

[0013] The beneficial effects of the present invention are as follows: the sun gear is driven to rotate by the engine, and then the sun gear drives the planetary gear to rotate, thereby transmitting the power generated by the engine to the planetary gear; at the same time, the motor drives the first spur gear to rotate, and then the first spur gear drives the ring gear and the planetary gear to rotate, thereby transmitting the power generated by the motor to the planetary gear.

[0014] After the two powers converge at the planetary gear, hybrid power is generated, and then the first transmission shaft is driven to rotate through the planetary turntable, thereby transmitting the hybrid power to the first transmission shaft.

[0015] 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, thereby transmitting the hybrid power to the wheels of the gantry crane to realize the overall movement of the gantry crane.

[0016] The second bevel gear on the first transmission shaft drives the sixth bevel gear and the third transmission shaft to rotate, driving the rope to wrap around the third transmission shaft or driving the rope wrapped around the third transmission shaft to be released, thereby transmitting the hybrid power to the rope to realize the up and down movement of the hook.

[0017] The first transmission shaft drives the threaded shaft to rotate, driving the slider to move left and right along the threaded shaft, thereby transmitting the hybrid power to the slider, so that the slider drives the hook to move left and right.

[0018] Combining oil power and electricity to generate hybrid power can not only make the gantry crane operate stably and efficiently, but also reduce fuel consumption, exhaust emissions, and environmental pollution, which is of great help in protecting the environment.

[0019] Furthermore, a first clutch and a fourth transmission shaft are provided between the engine and the sun gear from left to right; the output shaft of the engine is fixedly connected to one side of the first clutch, the other side of the first clutch is fixedly connected to one end of the fourth transmission shaft, and the other end of the fourth transmission shaft is fixedly connected to the sun gear. The first clutch can be closed when the engine needs to operate, and separated when the engine does not need to operate, thereby avoiding waste of power and energy of the engine.

[0020] Furthermore, a second clutch and a fifth transmission shaft are arranged between the motor and the first spur gear from left to right; the output shaft of the motor is fixedly connected to one side of the second clutch, the other side of the second clutch is fixedly connected to one end of the fifth transmission shaft, and the other end of the fifth transmission shaft is fixedly connected to the first spur gear. The second clutch can be closed when the motor needs to operate, and separated when the motor does not need to operate, thereby avoiding the waste of power and energy of the motor.

[0021] When the first clutch is closed and the second clutch is disengaged, the gantry crane uses the power generated by the engine as the sole driving force.

[0022] When the first clutch is disengaged and the second clutch is closed, the gantry crane uses the power generated by the motor as the sole driving force.

[0023] Furthermore, a third clutch is provided between the first transmission shaft and the threaded shaft, one side of the third clutch is fixedly connected to the first transmission shaft, and the other side of the third clutch is fixedly connected to the threaded shaft. The third clutch is used to control the power connection and power disconnection between the first transmission shaft and the threaded shaft, thereby controlling the left and right sliding of the slider and driving the left and right movement of the hook.

[0024] Furthermore, a first generator is fixed to the inner side of the top of the right leg, and the right end of the threaded shaft is connected to the power shaft of the first generator; the first generator is electrically connected to a battery and a transverse indicator light; the battery is fixed to the outer end surface of the top of the left leg; and the transverse indicator light is fixed to the front and rear end surfaces of the crossbeam. When the third clutch is closed, the threaded shaft starts to rotate, driving the hook to move in the left and right directions. At the same time, the threaded shaft drives the first generator to start generating electricity. Part of the electricity generated by the first generator enters the battery, and the other part is used to light up the transverse indicator light. The transverse indicator light is on, warning that the hook is moving left and right, and reminding the surrounding operators not to get close.

[0025] Furthermore, a sixth transmission shaft and a fourth clutch are arranged in sequence from top to bottom between the third bevel gear and the second transmission shaft, and the fourth clutch is arranged horizontally; the bottom of the third bevel gear is fixedly connected to the top of the sixth transmission shaft, the bottom end of the sixth transmission shaft is fixedly connected to the top end face of the fourth clutch, and the bottom end face of the fourth clutch is fixedly connected to the top of the second transmission shaft. The closing of the fourth clutch is used to control the power connection and power disconnection between the sixth transmission shaft and the second transmission shaft, thereby controlling the overall movement of the gantry crane.

[0026] Furthermore, a second spur gear is fixed on the second transmission shaft, a third spur gear is meshed on one side of the second spur gear, a second generator is provided at the bottom of the third spur gear, a power shaft of the second generator is fixedly connected to the third spur gear, and the second generator is fixed inside the left leg; the second generator is electrically connected to the battery; the second generator is also electrically connected to the leg indicator light, which is fixed to the front and rear end surfaces of the left leg and the front and rear end surfaces of the right leg. When the fourth clutch is closed, the second transmission shaft and the fourth bevel gear start to rotate, driving the wheels of the gantry crane to rotate. At the same time, the second spur gear and the third spur gear start to rotate, driving the second generator to start generating electricity. Part of the electricity generated by the second generator enters the battery, while the other part is used to light up the leg indicator light, warning that the gantry crane as a whole is moving and reminding the surrounding operators not to get close.

[0027] Furthermore, the seventh transmission shaft and the fifth clutch are arranged in sequence from top to bottom between the sixth bevel gear and the third transmission shaft, and the fifth clutch is arranged horizontally; the bottom of the sixth bevel gear is fixedly connected to the top of the seventh transmission shaft, the bottom end of the seventh transmission shaft is fixedly connected to the top end face of the fifth clutch, the bottom end face of the fifth clutch is fixedly connected to the top 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. The fifth clutch is used to control the power connection and power disconnection between the seventh transmission shaft and the third transmission shaft, thereby controlling the up and down movement of the hook. The limit baffle is used to limit the position of the lifting rope winding on the third transmission shaft.

[0028] Furthermore, a third generator is provided below the third transmission shaft, the third generator is fixed inside the left support leg, the power shaft of the third generator is fixedly connected to the bottom end of the third transmission shaft; the third generator is electrically connected to the battery; the third generator is also electrically connected to a longitudinal indicator light, which is fixed to the front and rear end surfaces of the crossbeam. When the fifth clutch is closed, the third transmission shaft starts to rotate, thereby driving the hook to move up and down through the suspension rope. At the same time, the third transmission shaft drives the third generator to start generating electricity. Part of the electricity generated by the third generator enters the battery, while the other part is used to light up the longitudinal indicator light, warning that the hook is moving up and down, and reminding the surrounding staff not to get close.

[0029] A hybrid oil-electric driving method for a gantry crane includes the hybrid oil-electric driving system of the gantry crane, and the driving method includes the following three modes:

[0030] Hybrid mode:

[0031] The first clutch and the second clutch are both closed, and the third clutch, the fourth clutch and the fifth clutch are all disengaged;

[0032] The battery provides power to the motor, which drives the first spur gear to rotate; the first spur gear then drives the ring gear to rotate, thereby driving the planetary gear to rotate; at the same time, the engine drives the sun gear to rotate, and the sun gear then drives the planetary gear to rotate;

[0033] The power generated by the motor and the power generated by the engine converge at the planetary gear; then the planetary gear drives the planetary turntable to rotate, thereby driving the first transmission shaft to rotate;

[0034] Oil circuit drive mode:

[0035] The first clutch is closed, and the second clutch, the third clutch, the fourth clutch and the fifth clutch are all disengaged;

[0036] The engine drives the sun gear to rotate, and then the sun gear drives the planetary gear to rotate; the planetary gear drives the planetary turntable to rotate, thereby driving the first transmission shaft to rotate;

[0037] Circuit driving mode:

[0038] The second clutch is closed, and the first clutch, the third clutch, the fourth clutch and the fifth clutch are all disengaged;

[0039] The battery provides power to the motor, which drives the first spur gear to rotate; the first spur gear then drives the ring gear to rotate, thereby driving the planetary gear to rotate; then the planetary gear drives the planetary turntable to rotate, thereby driving the first transmission shaft to rotate;

[0040] After any of the above modes drives the first transmission shaft to rotate:

[0041] When the gantry crane needs to move as a whole, the fourth clutch is closed; the first transmission shaft drives the first bevel gear to rotate, thereby driving the third bevel gear to rotate; the third bevel gear drives the second transmission shaft to rotate, thereby driving the fourth bevel gear to rotate; the fourth bevel gear then drives the fifth bevel gear to rotate, driving the wheel shaft to rotate, thereby driving the wheel to rotate, so that the gantry crane moves as a whole; at the same time, the rotation of the second transmission shaft drives the second spur gear to rotate, thereby driving the third spur gear to rotate; the third spur gear drives the power shaft of the second generator to rotate, so that the second generator starts to generate electricity, part of the generated electricity enters the battery, and the other part is used to power the support foot indicator light, and the support foot indicator light lights up;

[0042] When the 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 and drive the slider to move left and right, thereby driving the hook to move left and right; at the same time, the threaded shaft drives the power shaft of the first generator to rotate, so that the first generator starts to generate electricity, and part of the generated electricity enters the battery, and the other part is used to power the horizontal indicator light, and the horizontal indicator light lights up;

[0043] When the hook of the gantry crane needs to move up and down, the fifth clutch closes; the first transmission shaft drives the second bevel gear to rotate, and the second bevel gear drives the sixth bevel gear to rotate, thereby driving the third transmission shaft to rotate, so that the lifting rope wrapped around the outside of the third transmission shaft is released, and the hook begins to descend; conversely, the hook rises; at the same time, the third transmission shaft drives the power shaft of the third generator to rotate, so that the third generator starts to generate electricity, part of the generated electricity enters the battery, and the other part is used to power the longitudinal indicator light, and the longitudinal indicator light lights up. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the external structure of an oil-electric hybrid power system of a gantry crane according to an embodiment of the present invention.

[0045] Figure 2 The figure is a schematic diagram of the internal structure of an oil-electric hybrid power system of a gantry crane according to an embodiment of the present invention.

[0046] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0047] Figure 4 Schematic diagram of the internal structure of the left support leg according to an embodiment of the present invention.

[0048] Figure 5 for Figure 4 A partial enlarged view of point B in the middle.

[0049] 1-left support leg, 2-right support leg, 3-crossbeam, 4-engine, 5-motor, 6-sun gear, 7-gear ring, 8-planetary gear, 9-first spur gear, 10-first connecting rod, 11-planetary 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 -sling rope, 25-first clutch, 26-fourth transmission shaft, 27-second clutch, 28-fifth transmission shaft, 29-third clutch, 30-first generator, 31-battery, 32-lateral indicator light, 33-sixth transmission shaft, 34-fourth clutch, 35-second spur gear, 36-third spur gear, 37-second generator, 38-support foot indicator light, 39-seventh transmission shaft, 40-fifth clutch, 41-limit baffle, 42-third generator, 43-longitudinal indicator light. DETAILED DESCRIPTION

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0051] Example

[0052] A hybrid power system of a gantry crane, comprising a left support leg 1, a right support leg 2 and a crossbeam 3, wherein an engine 4 and a motor 5 are fixed to the inner side of the top of the left support leg 1;

[0053] The output shaft of the engine 4 is connected to the sun gear 6, and the engine 4 drives the sun gear 6 to rotate; the sun gear 6 is sleeved with a ring gear 7 on the outer side, and a planetary gear 8 is arranged between the sun gear 6 and the ring gear 7, and the planetary gear 8 is meshed with the inner side of the ring gear 7, and the planetary gear 8 is meshed with the outer side of the sun gear 6;

[0054] The output shaft of the motor 5 is connected to the first spur gear 9, and the motor 5 drives the first spur gear 9 to rotate; the first spur gear 9 is meshed with the outer side of the ring gear 7;

[0055] The side of the planetary wheel 8 facing the right support leg 2 is rotatably connected to the first connecting rod 10, and the end of the first connecting rod 10 facing the right support leg 2 is fixedly connected to the planetary rotating disk 11;

[0056] 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 also 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;

[0057] The threaded shaft 13 passes through the cross beam 3, the left end of the threaded shaft 13 is located in the left support leg 1, and the right end of the threaded shaft 13 is rotatably connected to the inside of the right support leg 2; a slider 16 is threadedly connected to the threaded shaft 13, and the slider 16 is located inside the cross beam 3;

[0058] 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 perpendicular to each other; a second transmission shaft 18 is vertically connected to the bottom of the third bevel gear 17, and a fourth bevel gear 19 is connected to the bottom end of the second transmission shaft 18, and a fifth bevel gear 20 is meshed with the fourth bevel gear 19, and a wheel shaft 21 is fixed to the center of the fifth bevel gear 20;

[0059] 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 perpendicular to each other; a third transmission shaft 23 is vertically connected to the bottom of the sixth bevel gear 22, and a lifting rope 24 is wrapped around the outside of the third transmission shaft 23, one end of the lifting rope 24 is fixedly connected to the third transmission shaft 23, and the other end of the lifting rope 24 passes through the side wall of the left support leg 1, the bottom side wall of the slider 16 and the lower end face of the bottom of the slider 16 in sequence and is fixed with a lifting hook.

[0060] The sun gear 6 is driven by the engine 4 to rotate, and then the sun gear 6 drives the planetary gear 8 to rotate, thereby transmitting the power generated by the engine 4 to the planetary gear 8; at the same time, the motor 5 drives the first spur gear 9 to rotate, and then the first spur gear 9 drives the ring gear 7 and the planetary gear 8 to rotate, thereby transmitting the power generated by the motor 5 to the planetary gear 8.

[0061] After the two powers merge at the planetary gear 8 , a hybrid power is generated, and then the first transmission shaft 12 is driven to rotate through the planetary turntable 11 , so that the hybrid power is transmitted to the first transmission shaft 12 .

[0062] 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, thereby transmitting the hybrid power to the wheels of the gantry crane to realize the overall movement of the gantry crane.

[0063] 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, driving the rope 24 to wrap around the third transmission shaft 23 or driving the rope 24 wrapped around the third transmission shaft 23 to be released, thereby transmitting the hybrid power to the rope 24 to realize the up and down movement of the hook.

[0064] The first transmission shaft 12 drives the threaded shaft 13 to rotate, driving the slider 16 to move left and right along the threaded shaft 13, thereby transmitting the hybrid power to the slider 16, so that the slider 16 drives the hook to move left and right.

[0065] Combining oil power and electricity to generate hybrid power can not only make the gantry crane operate stably and efficiently, but also reduce fuel consumption, exhaust emissions, and environmental pollution, which is of great help in protecting the environment.

[0066] A first clutch 25 and a fourth transmission shaft 26 are provided between the engine 4 and the sun gear 6 from left to right; the output shaft of the engine 4 is fixedly connected to one side of the first clutch 25, the other side of the first clutch 25 is fixedly connected to one end of the fourth transmission shaft 26, and the other end of the fourth transmission shaft 26 is fixedly connected to the sun gear 6. The first clutch 25 can be closed when the engine 4 needs to work, and disengaged when the engine 4 does not need to work, thereby avoiding the waste of power and energy of the engine 4.

[0067] A second clutch 27 and a fifth transmission shaft 28 are provided between the motor 5 and the first spur gear 9 from left to right; the output shaft of the motor 5 is fixedly connected to one side of the second clutch 27, the other side of the second clutch 27 is fixedly connected to one end of the fifth transmission shaft 28, and the other end of the fifth transmission shaft 28 is fixedly connected to the first spur gear 9. The second clutch 27 can be closed when the motor 5 is required to operate, and can be separated when the motor 5 is not required to operate, thereby avoiding the waste of power and energy of the motor 5.

[0068] 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 the sole driving force.

[0069] When the first clutch 25 is disengaged and the second clutch 27 is closed, the gantry crane uses the power generated by the motor 5 as the sole driving force.

[0070] A third clutch 29 is provided between the first transmission shaft 12 and the threaded shaft 13, one side of the third clutch 29 is fixedly connected to the first transmission shaft 12, and the other side of the third clutch 29 is fixedly connected to the threaded shaft 13. The third clutch 29 is used to control the power connection and power disconnection between the first transmission shaft 12 and the threaded shaft 13, thereby controlling the left and right sliding of the slider 16 and driving the left and right movement of the hook.

[0071] A first generator 30 is fixed to the inner side of the top of the right leg 2, and the right end of the threaded shaft 13 is connected to the power shaft of the first generator 30; the first generator 30 is electrically connected to a battery 31 and a lateral indicator light 32; the battery 31 is fixed to the outer end surface of the top of the left leg 1; the lateral indicator light 32 is fixed to the front and rear end surfaces of the crossbeam 3. When the third clutch 29 is closed, the threaded shaft 13 starts to rotate, driving the hook to move in the left and right directions. At the same time, the threaded shaft 13 drives the first generator 30 to start generating electricity. Part of the electric energy generated by the first generator 30 enters the battery 31, and the other part is used to light up the lateral indicator light 32. The lateral indicator light 32 lights up, warning that the hook is moving left and right, and reminding the surrounding operators not to get close.

[0072] A sixth transmission shaft 33 and a fourth clutch 34 are arranged in sequence from top to bottom between the third bevel gear 17 and the second transmission shaft 18, and the fourth clutch 34 is arranged horizontally; the bottom of the third bevel gear 17 is fixedly connected to the top of the sixth transmission shaft 33, the bottom end of the sixth transmission shaft 33 is fixedly connected to the top end face of the fourth clutch 34, and the bottom end face of the fourth clutch 34 is fixedly connected to the top of the second transmission shaft 18. The closing of the fourth clutch 34 is used to control the power connection and power disconnection between the sixth transmission shaft 33 and the second transmission shaft 18, thereby controlling the overall movement of the gantry crane and realizing the forward and backward movement of the hook.

[0073] A second spur gear 35 is fixed on the second transmission shaft 18, a third spur gear 36 is meshed on one side of the second spur gear 35, a second generator 37 is provided at the bottom of the third spur gear 36, a power shaft of the second generator 37 is fixedly connected to the third spur gear 36, and the second generator 37 is fixed inside the left support leg 1; the second generator 37 is electrically connected to the battery 31; the second generator 37 is also electrically connected to the support leg indicator light 38, and the support leg indicator light 38 is fixed to the front and rear end surfaces of the left support leg 1 and the front and rear end surfaces of the right support leg 2. When the fourth clutch 34 is closed, the second transmission shaft 18 and the fourth bevel gear 19 start to rotate, driving the wheels of the gantry crane 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 electricity generated by the second generator 37 enters the battery 31, and the other part is used to light up the support leg indicator light 38, warning that the gantry crane as a whole is moving and reminding the surrounding operators not to approach.

[0074] A seventh transmission shaft 39 and a fifth clutch 40 are arranged in sequence from top to bottom between the sixth bevel gear 22 and the third transmission shaft 23, and the fifth clutch 40 is arranged horizontally; the bottom of the sixth bevel gear 22 is fixedly connected to the top of the seventh transmission shaft 39, the bottom end of the seventh transmission shaft 39 is fixedly connected to the top end face of the fifth clutch 40, the bottom end face of the fifth clutch 40 is fixedly connected to the top of the third transmission shaft 23, a limit baffle 41 is fixed on the third transmission shaft 23, and the winding position of the suspension 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 power disconnection between the seventh transmission shaft 39 and the third transmission shaft 23, thereby controlling the up and down movement of the hook. The limit baffle 41 is used to limit the position of the suspension rope 24 winding on the third transmission shaft 23.

[0075] A third generator 42 is provided below the third transmission shaft 23. The third generator 42 is fixed inside the left support leg 1. The power shaft of the third generator 42 is fixedly connected to 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 to a longitudinal indicator light 43, which is fixed to the front and rear end surfaces of the crossbeam 3. When the fifth clutch 40 is closed, the third transmission shaft 23 starts to rotate, thereby driving the hook to move up and down through the suspension rope 24. At the same time, the third transmission shaft 23 drives the third generator 42 to start generating electricity. Part of the electricity generated by the third generator 42 enters the battery 31, while the other part is used to light up the longitudinal indicator light 43, warning that the hook is moving up and down, and reminding the surrounding staff not to get close.

[0076] The third clutch 29, the fourth clutch 34 and the fifth clutch 40 can be closed individually to achieve the hook to move in the left-right direction, the front-back direction or the up-down direction. They can also be closed simultaneously to achieve the hook to move in the left-right direction, the up-down direction and the front-back direction. Any two of them can also be closed to achieve the hook to move in the corresponding two directions simultaneously.

[0077] A hybrid oil-electric driving method for a gantry crane includes the hybrid oil-electric driving system of the gantry crane, and the driving method includes the following three modes:

[0078] Hybrid mode:

[0079] 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;

[0080] The battery 31 provides power to the motor 5, which drives the first spur gear 9 to rotate; the first spur gear 9 then drives the ring gear 7 to rotate, thereby driving the planetary gear 8 to rotate; the power transmission direction is the motor 5, the fifth transmission shaft 28, the first spur gear 9, the ring gear 7, and the planetary gear 8;

[0081] At the same time, the engine 4 drives the sun gear 6 to rotate, and the sun gear 6 then drives the planetary gear 8 to rotate; the power transmission direction is the engine 4, the fourth transmission shaft 26, the sun gear 6, and the planetary gear 8;

[0082] The power generated by the motor 5 and the power generated by the engine 4 converge at the planetary gear 8; then the planetary gear 8 drives the planetary turntable 11 to rotate, thereby driving the first transmission shaft 12 to rotate;

[0083] Oil circuit drive mode:

[0084] 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;

[0085] The engine 4 drives the sun gear 6 to rotate, and then the sun gear 6 drives the planetary gear 8 to rotate; the planetary gear 8 drives the planetary turntable 11 to rotate, thereby driving the first transmission shaft 12 to rotate;

[0086] Circuit driving mode:

[0087] 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;

[0088] The battery 31 provides power to the motor 5, which drives the first spur gear 9 to rotate; the first spur gear 9 then drives the ring gear 7 to rotate, thereby driving the planetary gear 8 to rotate; then the planetary gear 8 drives the planetary turntable 11 to rotate, thereby driving the first transmission shaft 12 to rotate;

[0089] After any of the above modes drives the first transmission shaft 12 to rotate:

[0090] When the gantry crane needs to move as a whole, the fourth clutch 34 is closed; the first transmission shaft 12 drives the first bevel gear 14 to rotate, thereby driving the third bevel gear 17 to rotate; the third bevel gear 17 drives the second transmission shaft 18 to rotate, thereby driving the fourth bevel gear 19 to rotate; the fourth bevel gear 19 then drives the fifth bevel gear 20 to rotate, driving the wheel shaft 21 to rotate, thereby driving the wheel to rotate, so that the gantry crane moves as a whole; at the same time, the rotation of the second transmission shaft 18 drives the second spur gear 35 to rotate, thereby driving the third spur gear 36 to rotate; the third spur gear 36 drives the power shaft of the second generator 37 to rotate, so that the second generator 37 starts to generate electricity, and part of the generated electricity enters the battery 31, and the other part is used to power the support foot indicator light 38, and the support foot indicator light 38 lights up;

[0091] When the 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 and drive the slider 16 to move left and right, thereby driving the hook to move left and right; at the same time, the threaded shaft 13 drives the power shaft of the first generator 30 to rotate, so that the first generator 30 starts to generate electricity, and part of the generated electricity enters the battery 31, and the other part is used to supply power to the horizontal indicator light 32, and the horizontal indicator light 32 lights up;

[0092] When the 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, and the second bevel gear 15 drives the sixth bevel gear 22 to rotate, thereby driving the third transmission shaft 23 to rotate, so that the lifting rope wrapped around the outside of the third transmission shaft 23 is released, and the hook begins to descend; conversely, the hook rises; at the same time, 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, and part of the generated electricity enters the battery 31, and the other part is used to power the longitudinal indicator light 43, and the longitudinal indicator light 43 lights up.

[0093] It should be understood that although the present invention has been described in relatively detail through specific implementation methods, these descriptions are not limitations on the patent scope of the present invention. Any changes in form and details made on this basis that do not exceed the scope of protection of the claims are within the scope of protection of the present invention.

Claims

1. A hybrid electric driving method for a gantry crane, characterized in that: A hybrid power system of a gantry crane is provided, the system comprising a left support leg (1), a right support leg (2) and a crossbeam (3), wherein an engine (4) and a motor (5) are fixed to the inner side of the top of the left support leg (1); The output shaft of the engine (4) is connected to a sun gear (6), and the engine (4) drives the sun gear (6) to rotate; a ring gear (7) is sleeved on the outer side of the sun gear (6), a planetary gear (8) is arranged between the sun gear (6) and the ring gear (7), the planetary gear (8) meshes with the inner side of the ring gear (7), and the planetary gear (8) meshes with the outer side of the sun gear (6); The output shaft of the motor (5) is connected to a first spur gear (9), and the motor (5) drives the first spur gear (9) to rotate; the first spur gear (9) is meshed with the outer side of the ring gear (7); The side of the planetary wheel (8) facing the right support leg (2) is rotatably connected to a first connecting rod (10), and the end of the first connecting rod (10) facing the right support leg (2) is fixedly connected to a planetary rotating disk (11); A first transmission shaft (12) is fixedly connected to one side of the planetary turntable (11) facing the right support foot (2); an end of the first transmission shaft (12) facing the right support foot (2) is connected to a threaded shaft (13); a first bevel gear (14) and a second bevel gear (15) are also fixed to the first transmission shaft (12); 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) passes through the crossbeam (3), the left end of the threaded shaft (13) is located in the left support leg (1), and the right end of the threaded shaft (13) is rotatably connected to the inside of the right support leg (2); a slider (16) is threadedly connected to the threaded shaft (13), and the slider (16) is located inside the crossbeam (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 perpendicular to each other; a second transmission shaft (18) is vertically connected to the bottom of the third bevel gear (17), a fourth bevel gear (19) is connected to the bottom end of the second transmission shaft (18), a fifth bevel gear (20) is meshed with the fourth bevel gear (19), and a wheel shaft (21) is fixed to 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 perpendicular to each other; a third transmission shaft (23) is vertically connected to the bottom of the sixth bevel gear (22), a suspension rope (24) is wound around the outside of the third transmission shaft (23), one end of the suspension rope (24) is fixedly connected to the third transmission shaft (23), and the other end of the suspension rope (24) passes through the side wall of the left support foot (1), the side wall of the bottom of the slider (16), and the lower end surface of the bottom of the slider (16) in sequence and is fixed with a suspension hook; A first clutch (25) and a fourth transmission shaft (26) are provided between the engine (4) and the sun gear (6) from left to right; the output shaft of the engine (4) is fixedly connected to one side of the first clutch (25), the other side of the first clutch (25) is fixedly connected to one end of the fourth transmission shaft (26), and the other end of the fourth transmission shaft (26) is fixedly connected to the sun gear (6); A second clutch (27) and a fifth transmission shaft (28) are provided between the motor (5) and the first spur gear (9) from left to right; the output shaft of the motor (5) is fixedly connected to one side of the second clutch (27), the other side of the second clutch (27) is fixedly connected to one end of the fifth transmission shaft (28), and the other end of the fifth transmission shaft (28) is fixedly connected to the first spur gear (9); A third clutch (29) is provided between the first transmission shaft (12) and the threaded shaft (13); one side of the third clutch (29) is fixedly connected to the first transmission shaft (12), and the other side of the third clutch (29) is fixedly connected to the threaded shaft (13); A first generator (30) is fixed to the inner side of the top of the right support leg (2), and the right end of the threaded shaft (13) is connected to the power shaft of the first generator (30); the first generator (30) is electrically connected to a battery (31) and a transverse indicator light (32); the battery (31) is fixed to the outer end surface of the top of the left support leg (1); and the transverse indicator light (32) is fixed to the front and rear end surfaces of the crossbeam (3); A sixth transmission shaft (33) and a fourth clutch (34) are provided between the third bevel gear (17) and the second transmission shaft (18) from top to bottom, and the fourth clutch (34) is arranged horizontally; the bottom of the third bevel gear (17) is fixedly connected to the top of the sixth transmission shaft (33), the bottom end of the sixth transmission shaft (33) is fixedly connected to the top end surface of the fourth clutch (34), and the bottom end surface of the fourth clutch (34) is fixedly connected to the top of the second transmission shaft (18); A second spur gear (35) is fixed on the second transmission shaft (18); a third spur gear (36) is meshed on one side of the second spur gear (35); a second generator (37) is provided at the bottom of the third spur gear (36); a power shaft of the second generator (37) is fixedly connected to the third spur gear (36); the second generator (37) is fixed inside the left support leg (1); the second generator (37) is electrically connected to the battery (31); the second generator (37) is also electrically connected to a support leg indicator light (38); the support leg indicator light (38) is fixed to the front and rear end surfaces of the left support leg (1) and the front and rear end surfaces of the right support leg (2); A seventh transmission shaft (39) and a fifth clutch (40) are arranged in sequence from top to bottom between the sixth bevel gear (22) and the third transmission shaft (23), and the fifth clutch (40) is arranged horizontally; the bottom of the sixth bevel gear (22) is fixedly connected to the top of the seventh transmission shaft (39), the bottom end of the seventh transmission shaft (39) is fixedly connected to the top end surface of the fifth clutch (40), the bottom end surface of the fifth clutch (40) is fixedly connected to the top of the third transmission shaft (23), a limit baffle (41) is fixed on the third transmission shaft (23), and the winding position of the sling (24) on the third transmission shaft (23) is located between the limit baffle (41) and the fifth clutch (40); A third generator (42) is provided below the third transmission shaft (23); the third generator (42) is fixed inside the left support leg (1); a power shaft of the third generator (42) is fixedly connected to 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 to a longitudinal indicator light (43); the longitudinal indicator light (43) is fixed to the front and rear end surfaces of the crossbeam (3); The driving method includes the following three modes: 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 battery (31) provides power to the motor (5), and the motor (5) drives the first spur gear (9) to rotate; the first spur gear (9) then drives the ring gear (7) to rotate, thereby driving the planetary gear (8) to rotate; At the same time, the engine (4) drives the sun gear (6) to rotate, and the sun gear (6) then drives the planetary gear (8) to rotate; The power generated by the motor (5) and the power generated by the engine (4) are combined at the planetary gear (8); then the planetary gear (8) drives the planetary turntable (11) to rotate, thereby driving the first transmission shaft (12) to rotate; Oil circuit drive 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 gear (6) to rotate, and the sun gear (6) then drives the planetary gear (8) to rotate; the planetary gear (8) drives the planetary turntable (11) to rotate, thereby driving the first transmission shaft (12) to rotate; 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) provides power to the motor (5), and the motor (5) drives the first spur gear (9) to rotate; the first spur gear (9) then drives the ring gear (7) to rotate, thereby driving the planetary gear (8) to rotate; then the planetary gear (8) drives the planetary turntable (11) to rotate, thereby driving the first transmission shaft (12) to rotate; After any of the above modes drives the first transmission shaft (12) to rotate: When the gantry crane needs to move as a whole, the fourth clutch (34) is closed; the first transmission shaft (12) drives the first bevel gear (14) to rotate, thereby driving the third bevel gear (17) to rotate; the third bevel gear (17) drives the second transmission shaft (18) to rotate, thereby driving the fourth bevel gear (19) to rotate; the fourth bevel gear (19) then drives the fifth bevel gear (20) to rotate, driving the wheel shaft (21) to rotate, thereby driving the wheel to rotate, so that the gantry crane moves as a whole; at the same time, the rotation of the second transmission shaft (18) drives the second spur gear (35) to rotate, thereby driving the third spur gear (36) to rotate; the third spur gear (36) drives the power shaft of the second generator (37) to rotate, thereby causing the second generator (37) to start generating electricity, part of the generated electricity enters the storage battery (31), and the other part is used to supply power to the support foot indicator light (38), and the support foot indicator light (38) lights up; When the 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 and drive the slider (16) to move left and right, thereby driving the hook to move left and right; at the same time, the threaded shaft (13) drives the power shaft of the first generator (30) to rotate, so that the first generator (30) starts to generate electricity, and part of the generated electricity enters the battery (31), and the other part is used to supply power to the lateral indicator light (32), and the lateral indicator light (32) lights up; When the 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, and the second bevel gear (15) drives the sixth bevel gear (22) to rotate, thereby driving the third transmission shaft (23) to rotate, so that the rope wound around the outside of the third transmission shaft (23) is released, and the hook begins to descend; conversely, the hook rises; at the same time, 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, and part of the generated electricity enters the battery (31), and the other part is used to power the longitudinal indicator light (43), and the longitudinal indicator light (43) lights up.

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