Power supply system of tower crane and control method thereof

Abstract

The application provides a power supply system of a tower crane and a control method thereof, and comprises a tower crane, a battery box, a power distribution room and a control cabinet. A plurality of power supply platforms are arranged at intervals on the outer periphery of the tower body, and a lifting platform is arranged at the top of the tower. A lifting motor is movably arranged at the lower end of the lifting platform, and the lifting motor is provided with a lifting platform through a steel cable. The battery box can be placed on the lifting platform to complete the back-and-forth movement between the power supply platform and the ground, so as to replace the battery box. Meanwhile, a plurality of mechanisms for assisting the battery box to be pulled from the laid-down state to the vertical state are arranged on the power supply platform. The application can make part of the small and medium-sized tower cranes or the tower cranes in complex construction environments not need to be arranged with cables, and the power supply is realized by using the battery box, so that the arrangement of the cables can be effectively reduced, and the safety hidden danger caused by the failure of the rotary brake of the tower crane when the commercial power is cut off can be avoided.

Description

TECHNICAL FIELD

[0001] The application relates to a power supply system of high-altitude large construction equipment for construction power supply, in particular to a power supply system of a tower crane and a control method thereof. BACKGROUND

[0002] The tower crane is a kind of hoisting equipment most commonly used in a construction site, also known as a tower crane, and is used for hoisting construction raw materials such as steel bars, wood blocks, concrete and steel pipes by being lengthened (high) section by section (referred to as a standard section). The tower crane has a tower top installation height usually 10-20m higher than the roof of a building, and thus is a large construction equipment capable of high-altitude operation.

[0003] A power distribution room is arranged at the construction site, municipal power is provided after municipal power pipelines are introduced into the power distribution room, and power supply cables are pulled out from the power distribution room for power supply of the tower crane, are usually arranged in a ground burying mode or a high-altitude arrangement mode, are connected to a secondary power distribution box special for the tower crane, and then are connected to a power distribution cabinet of the tower crane through cables, so that the power supply system of the tower crane is built. SUMMARY

[0004] To solve the above problems, the application provides a power supply system of a tower crane, and the application is implemented as follows.

[0005] The power supply system of the tower crane comprises a tower crane, a battery box, a power distribution room and a control cabinet.

[0006] A plurality of power supply platforms are arranged at intervals on the outer periphery of the tower body of the tower crane, the power supply platform comprises a support plate fixed to the outer periphery of the tower body, a limiting support frame is arranged at the lower end of the support plate, a power supply seat is rotatably arranged on the upper end surface of the support plate, the power supply seat is electrically connected to the power distribution cabinet and the control cabinet of the tower crane, a flap is hingedly arranged at the end of the support plate away from the tower body, a first conveying belt is arranged on the flap, at least one pair of hydraulic rods is hingedly arranged above the support plate of the tower body, the hydraulic rods are hingedly connected to the flap, at least one clamping claw is hingedly arranged above the support plate of the tower body, a lifting platform is further arranged at the upper end of the tower crane, a lifting motor is movably arranged on the lifting platform, the lifting motor is connected to a lifting platform through a steel cable, and the steel cable of the lifting motor is further fixed to the lifting arm of the tower crane through a tower cap.

[0007] The battery box comprises a box body, the bottom of the box body is provided with an adapter port matched with the power supply seat, and the upper end of the battery box is provided with a fixing shaft matched with the clamping jaw;

[0008] The power distribution room is connected with the mains, and the power distribution room is provided with a charging device capable of charging the battery box, and the battery box charged in the power distribution room is transported to the construction position of the tower crane by a battery distribution vehicle;

[0009] The control cabinet is respectively connected with the turning plate, the hydraulic rod, the first conveying belt, the clamping jaw and the lifting motor, and the control cabinet is also connected with the power distribution room.

[0010] As a further improvement, the lifting platform specifically comprises a circular fixing plate, the lower end of the fixing plate is provided with a circumferential track, and the lifting motor is movably arranged on the circumferential track;

[0011] The lifting platform specifically comprises a rectangular carrier plate, three edges of the carrier plate except the edge close to the tower body are provided with protective fences upward, the upper end surface of the carrier plate is provided with a placing table, the upper end surface of the placing table is provided with a second conveying belt with the same transmission rate as the first conveying belt, and the carrier plate is provided with a driving motor and a signal receiving module, the signal receiving module is connected with the control cabinet, and the signal receiving module is also connected with the driving motor.

[0012] As a further improvement, at least two openable and closable buckling members are fixedly arranged on the protective fence away from the tower body among the three protective fences, the buckling members are matched with the fixing shaft, and the buckling members are connected with the driving motor.

[0013] The support plate is provided with a first distance sensor close to the lifting platform, and the carrier plate is provided with a second distance sensor matched with the first distance sensor close to the tower body.

[0014] As a further improvement, the power distribution cabinet and the control cabinet are also connected with the mains through cables, and the control cabinet is provided with a UPS uninterrupted power supply safety module and an alarm module.

[0015] As a further improvement, the support plate specifically comprises a base plate, the base plate is provided with a buckle plate groove with a semicircular cross section, a wire hole is arranged on the groove bottom of the buckle plate groove, and the power supply seat is hingedly arranged in the buckle plate groove.

[0016] As a further improvement, the groove bottom of the buckle plate groove is further provided with a telescopic limiting rod, and a limiting hole matched with the limiting rod is arranged on the arc surface of the base.

[0017] As a further improvement, the limiting support frame comprises at least one pair of main supporting rods, the upper end of the main supporting rod is fixedly connected to the lower end surface of the support plate away from the tower body, and the lower end of the main supporting rod is fixedly connected to the tower body.

[0018] The application also provides a control method of a power supply system of a tower crane, which is applied to any of the power supply systems of the tower crane and comprises the following steps:

[0019] S1. Obtain the remaining power in the battery box and send it to the control cabinet.

[0020] S2. The control cabinet sends corresponding control signals to the turnover plate, hydraulic rod, first conveying belt, second conveying belt, clamping claw, lifting motor, power supply seat and signal receiving module according to the remaining power in the battery box, and each component performs the battery replacement action according to the corresponding control signal.

[0021] As a further improvement, the step S1 specifically comprises the following steps:

[0022] S101. Give a plurality of power supply platforms independent numbers respectively.

[0023] S102. Obtain the remaining power of the battery box in a plurality of power supply platforms respectively.

[0024] The step S2 specifically comprises the following steps:

[0025] S201. The power supply platform with the remaining power in the battery box being not less than 80% is defined as a high power platform, the power supply platform with the remaining power in the battery box being 20%-80% is defined as a medium power platform, the power supply platform with the remaining power in the battery box being 5-20% is defined as a low power platform, and the power supply platform with the remaining power in the battery box being less than 5% is defined as an empty power platform.

[0026] S202. The battery box of the high power platform is used for supplying the main construction power of the tower crane, the battery box of the medium power platform is used for assisting in supplying the main construction power of the tower crane and supplying the UPS uninterrupted power supply safety module, the battery box of the low power platform is used for air conditioning / fan in the cab of the tower crane or lighting power of the tower crane, and the battery box of the empty power platform does not supply power;

[0027] S203. When the empty power platform appears, the control cabinet sends a corresponding first power exchange signal to the lifting motor and the power supply platform, the lifting motor adjusts the position according to the first power exchange signal, and lowers the lifting platform until the placing table is flush with the empty power platform, the power supply platform extends the clamping claw according to the first power exchange signal, and the power supply seat is turned over, when the box body of the empty battery box contacts the turning plate, the hydraulic rod extends to drive the turning plate to lower until it is lapped on the carrier plate, when the empty battery box is placed, the clamping claw is loosened, and the first conveying belt, the second conveying belt and the third conveying belt are simultaneously driven to convey the battery box to the placing table, and the buckling piece buckles the fixed shaft;

[0028] S204. The control cabinet sends a corresponding second power exchange signal to the power distribution room and the battery distribution vehicle, the battery distribution vehicle conveys the battery box completed in the power distribution room to the ground area of the tower crane, when the lifting platform is lowered to the ground, the empty and full battery boxes are replaced, and after the battery box replacement is completed, the ground staff sends a completion signal to the control cabinet;

[0029] S205. The control cabinet sends a corresponding third power exchange signal to the lifting motor and the power supply platform according to the completion signal, the lifting motor lifts the full battery box according to the third power exchange signal until the placing table is flush with the empty power platform and the turning plate is lapped on the carrier plate, the buckling piece is loosened, the first conveying belt, the second conveying belt and the third conveying belt are simultaneously reversely driven to convey the battery box until the power connection rod is inserted into the connection port, the clamping claw is tightly clamped on the outer periphery of the fixed shaft, and the power supply seat is reversely turned over, the clamping claw and the hydraulic rod are retracted until the full battery box is vertically placed.

[0030] The beneficial effects of the application are:

[0031] 1. By setting a plurality of power supply platforms at intervals on the outer periphery of the tower body of the tower crane, a power supply seat is arranged on the power supply platform, a battery box is detachably arranged on the power supply seat, and the power supply seat is electrically connected with the power distribution cabinet and the control cabinet of the tower crane, so that the tower crane with low power consumption requirement or the tower crane with difficult power cable arrangement can be powered by the battery box without using mains power. The arrangement of cables is reduced, and sudden power failure can be effectively prevented to cause the lifting arm to swing greatly.

[0032] 2. Since the battery box is usually in the shape of an upright hexahedron, the center of gravity is high, and if it is directly lifted, the battery box may be unstable or fall in the air due to strong wind, cable swing, tower body vibration, etc. At the same time, the installation of the traditional battery box also needs manual wire connection by workers, which causes the delay of construction period. The power supply seat is rotatably arranged on the support plate, the support plate is hingedly connected with the turning plate away from the tower body, the turning plate is connected with the tower body through at least one pair of hydraulic rods, so that the battery box can be placed on the lifting platform in a flat manner, the overall center of gravity is low, and the placement is more stable. At the same time, the clamping claw hingedly connected above the support plate of the tower body can realize the lifting of the flat placed battery box after connection until the vertical placement.

[0033] 3. By setting the control cabinet, the remaining power of each battery box is monitored, so that the tower crane can work normally and safely. And the power failure of the mains will not cause great delay of the construction period. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0035] Figure 2 It is a schematic diagram of the overall structure of the battery box of the present application.

[0036] Figure 3 It is a schematic diagram of the overall structure of the battery box when it is assembled on the power supply platform and in the battery replacement state.

[0037] Figure 4 It is a schematic diagram of the overall structure of the battery box. Figure 3 It is a schematic diagram of the overall structure of the battery box.

[0038] Figure 5 It is a schematic diagram of the overall structure of the battery box. Figure 4 It is a schematic diagram of the overall structure of the battery box.

[0039] Figure 6 It is a schematic diagram of the overall structure of the lifting platform of the present application.

[0040] Figure 7 It is a schematic diagram of the overall structure of the lifting platform of the present application. DETAILED DESCRIPTION

[0041] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0042] In the description of the present application, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0043] A power supply system of a tower crane 1, comprising a tower crane 1, a battery box 2, a power distribution room and a control cabinet 0;

[0044] A plurality of power supply platforms 3 are arranged at intervals on the outer periphery of the tower body of the tower crane 1, the power supply platform 3 comprises a support plate 31 fixed to the outer periphery of the tower body, a limiting support frame is arranged at the lower end of the support plate 31, a power supply seat 35 is rotatably arranged on the upper end surface of the support plate 31, the power supply seat 35 is electrically connected with the power distribution cabinet of the tower crane 1 and the control cabinet 0, a flap 32 is hingedly connected to the end of the support plate 31 away from the tower body, a first conveying belt 321 is arranged on the flap 32, at least one pair of hydraulic rods 33 is hingedly connected to the tower body above the support plate 31, the hydraulic rods 33 are hingedly connected with the flap 32, at least one clamping claw 34 is also hingedly connected to the tower body above the support plate 31, a lifting platform 5 is further arranged at the upper end of the tower crane 1, a lifting motor 6 is movably arranged on the lifting platform 5, the steel cable of the lifting motor 6 is connected with a lifting platform 4, and the steel cable of the lifting motor 6 is further fixedly arranged on the jib of the tower crane 1 through a tower cap;

[0045] The battery box 2 comprises a box body 21, a connecting port 24 matched with the power supply seat 35 is arranged at the bottom of the box body 21, a fixed shaft 22 is arranged at the upper end of the battery box 2, and the fixed shaft 22 is matched with the clamping claw 34;

[0046] The power distribution room is connected with the mains, and charging equipment for charging the battery box 2 is arranged in the power distribution room, the battery box 2 charged in the power distribution room is transported to the construction position of the tower crane 1 by a battery distribution vehicle;

[0047] The control cabinet 0 is electrically connected with the turnover plate 32, the hydraulic rod 33, the first conveying belt 321, the clamping jaw 34 and the lifting motor 6 respectively, and the control cabinet 0 is also communicatively connected with the power distribution room.

[0048] Specifically, the clamping jaw 34 is fixedly arranged on the output rod of another hydraulic device.

[0049] In order to facilitate the clamping jaw 34 to smoothly cooperate with the fixed shaft 22 without interfering with the box body 21 of the battery box 2, as a further improvement, the upper end of the box body 21 is provided with a gap slot 23 through which the output rod of the clamping jaw 34 passes.

[0050] As a further improvement, the lifting platform 5 specifically includes a circular fixing plate, the lower end of the fixing plate is provided with a circumferential track, and the lifting motor 6 is movably arranged on the circumferential track.

[0051] The lifting platform 4 specifically includes a rectangular carrier plate 41, three edges of the carrier plate 41 except the edge close to the tower body are all provided with protective fences upward, the upper end surface of the carrier plate 41 is provided with a placing table, the upper end surface of the placing table is provided with a second conveying belt 42 with the same transmission rate as the first conveying belt 321, the carrier plate is provided with a driving motor 44 and a signal receiving module, the signal receiving module is communicatively connected with the control cabinet 0, and the signal receiving module is also electrically connected with the driving motor 44.

[0052] As a further improvement, at least two openable and closable buckling members 43 are fixedly arranged on the protective fence away from the tower body among the three protective fences, the buckling member 43 is matched with the fixed shaft 22, the buckling member 43 is electrically connected with the driving motor 44, and the driving motor 44 is electrically connected with the signal receiving module.

[0053] The support plate 31 is provided with a first distance sensor close to one side of the lifting platform 4, and the carrier plate 41 is provided with a second distance sensor matched with the first distance sensor close to one side of the tower body.

[0054] As a further improvement, the power distribution cabinet and the control cabinet 0 are also electrically connected with the commercial power through cables, and the control cabinet 0 is provided with a UPS uninterrupted power supply safety module and an alarm module.

[0055] As a further improvement, the support plate 31 specifically comprises a base plate 311, which is provided with a buckle groove 312 in a semicircular cross-section, and a power supply seat 35 is hingedly arranged in the buckle groove 312, wherein the power supply seat 35 comprises a base in a 3 / 4 circular cross-section, and two planes on the side away from the circular surface of the base are respectively arranged as an electrical connection part 352 and a transmission part 353, the electrical connection part 352 is provided with an electrical connection rod matched with the adapter 24, and the transmission part 353 is provided with a third transmission belt 351 with the same transmission speed as the first transmission belt 321.

[0056] As a further improvement, the bottom of the buckle groove 312 is further provided with a telescopic limiting rod, and the circular surface of the base is provided with a limiting hole matched with the limiting rod.

[0057] As a further improvement, the limiting support frame comprises at least one pair of main support rods, the upper end of the main support rod is fixedly connected to the side of the lower end surface of the support plate 31 away from the tower body, and the lower end of the main support rod is fixedly connected to the tower body, and the lower end surface of the support plate 31 is fixedly connected with a reinforcing support rod at a position corresponding to the buckle groove 312, and the lower end of the reinforcing support rod is fixedly connected to the tower body.

[0058] In order to ensure the connection of the battery box 2, as a further improvement, the first transmission belt 321 is further provided with a pair of guide plates 322 gradually shrinking towards the base, and a plurality of guide rollers 323 are rotatably arranged on the guide plates 322.

[0059] The application also provides a control method of a power supply system of a tower crane 1, which is applied to any of the power supply systems of the tower crane 1 described above, and comprises the following steps:

[0060] S1. Obtain the remaining power in the battery box 2 and send it to the control cabinet;

[0061] S2. The control cabinet sends corresponding control signals to the flap 32, the hydraulic rod 33, the first transmission belt 321, the second transmission belt 42, the clamping jaw 34, the lifting motor 6, the power supply seat 35 and the signal receiving module according to the remaining power in the battery box 2, and each part performs the battery replacement action according to the corresponding control signal.

[0062] As a further improvement, the step S1 specifically comprises the following steps:

[0063] S101. Give a plurality of power supply platforms 3 independent numbers respectively;

[0064] S102. Obtain the remaining power of the battery box 2 in a plurality of power supply platforms 3 respectively;

[0065] The step S2 specifically comprises the following steps:

[0066] S201. The power supply platform 3 with the remaining battery capacity in the battery box 2 being not less than 80% is divided into a high power platform, the power supply platform 3 with the remaining battery capacity in the battery box 2 being 20%-80% is divided into a medium power platform, the power supply platform 3 with the remaining battery capacity in the battery box 2 being 5-20% is divided into a low power platform, and the power supply platform 3 with the remaining battery capacity in the battery box 2 being less than 5% is divided into an empty power platform;

[0067] S202. The battery box 2 in the high power platform is used to supply the main construction power of the tower crane 1, the battery box 2 in the medium power platform is used to assist in supplying the main construction power of the tower crane 1 and the power supply of the UPS uninterrupted power supply safety module, the battery box 2 in the low power platform is used to supply the air conditioner / fan in the cab of the tower crane 1 or the lighting power of the tower crane 1, and the battery box 2 in the empty power platform does not supply power;

[0068] S203. When the empty power platform appears, the control cabinet sends a corresponding first battery replacement signal to the lifting motor 6 and the power supply platform 3, the lifting motor 6 adjusts the position according to the first battery replacement signal, and lowers the lifting platform 4 until the placing table is flush with the empty power platform, the power supply platform 3 extends the clamping jaw 34 according to the first battery replacement signal, and the power supply seat 35 is flipped, when the box body 21 of the empty battery box 2 contacts the flap 32, the hydraulic rod 33 extends to drive the flap 32 to lower until it is lapped on the carrier plate 41, when the empty battery box 2 is placed flat, the clamping jaw 34 is loosened, and the first conveying belt 321, the second conveying belt 42 and the third conveying belt 351 are simultaneously driven to convey the battery box 2 to the placing table, and the buckling piece 43 buckles the fixing shaft 22;

[0069] S204. The control cabinet sends a corresponding second battery replacement signal to the power distribution room and the battery distribution vehicle, the battery distribution vehicle conveys the battery box 2 completed charging in the power distribution room to the ground area of the tower crane 1, when the lifting platform 4 is lowered to the ground, the empty and full battery boxes 2 are replaced, and after the battery box 2 replacement is completed, the control cabinet sends a completion signal to the ground staff;

[0070] S205. The control cabinet sends a corresponding third battery replacement signal to the lifting motor 6 and the power supply platform 3 according to the completion signal. The lifting motor 6 lifts the full battery box 2 according to the third battery replacement signal until the placement table is flush with the empty power supply platform and the flap 32 overlaps the carrier plate 41. The buckle 43 is loosened. The first conveyor belt 321, the second conveyor belt 42, and the third conveyor belt 351 are simultaneously reversely driven to transport the battery box 2 until the power connection rod is inserted into the connection port 24. The clamping jaw 34 is tightly clamped on the outer periphery of the fixed shaft 22. At the same time, the power supply seat is reversely flipped. The clamping jaw 34 and the hydraulic rod 33 are retracted until the full battery box 2 is vertically placed.

[0071] The preferred embodiments of the present application have been described above with the aid of drawings, but the present application covers any variations and modifications within the spirit and scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A power supply system for a tower crane, characterized in that, This includes tower cranes, battery boxes, power distribution rooms, and control cabinets; The tower crane has several power supply platforms spaced apart around its outer perimeter. Each power supply platform includes a support plate fixed to the outer perimeter of the tower body. A limiting support frame is provided at the lower end of the support plate. A power supply base is rotatably provided on the upper surface of the support plate. The power supply base is electrically connected to the tower crane's power distribution cabinet and control cabinet. A flap is hinged to the end of the support plate away from the tower body. A first conveyor belt is provided on the flap. At least one pair of hydraulic rods are hinged to the tower body above the support plate. The hydraulic rods are hinged to the flap. At least one clamping claw is also hinged to the tower body above the support plate. A lifting platform is also provided at the upper end of the tower crane. A lifting motor is movably mounted on the lifting platform. The lifting motor is connected to a lifting platform via a steel cable. The steel cable of the lifting motor is also fixed to the boom of the tower crane via a tower cap. The battery box includes a box body, the bottom of which is provided with a connection port adapted to the power supply base, and the upper end of the battery box is provided with a fixing shaft, which is adapted to the clamping claw. The power distribution room is connected to the mains power supply, and the power distribution room is equipped with charging equipment that can charge the battery box. The battery box that has been charged in the power distribution room is transported to the construction location of the tower crane by a battery delivery vehicle. The control cabinet is electrically connected to the flap, hydraulic rod, first conveyor belt, clamping claw and lifting motor respectively, and the control cabinet is also communicatively connected to the power distribution room; The lifting platform specifically includes a circular fixed plate, with a circumferential track at the lower end of the fixed plate, and the lifting motor is movably mounted on the circumferential track; The lifting platform specifically includes a rectangular carrier plate. The three edges of the carrier plate, except for the edge near the tower body, are provided with guardrails facing upwards. A platform is provided on the upper surface of the carrier plate. A second conveyor belt with the same transmission speed as the first conveyor belt is provided on the upper surface of the platform. A drive motor and a signal receiving module are provided inside the carrier plate. The signal receiving module is communicatively connected to the control cabinet and electrically connected to the drive motor. The support plate specifically includes a base plate, which has a recessed groove with a semi-circular cross-section. The bottom of the groove has a wire hole. The power supply base is hinged in the groove. The power supply base includes a base with a 3 / 4 circular cross-section. Two planes on the side of the base away from the circular surface are respectively set as a power receiving part and a transmission part. The power receiving part is provided with a power receiving rod adapted to the connection port. The transmission part is provided with a third transmission belt with the same transmission speed as the first transmission belt. The control cabinet is equipped with a UPS uninterruptible power supply safety module and an alarm module.

2. The power supply system for a tower crane as described in claim 1, characterized in that, At least two openable fasteners are fixedly installed on the side of the three guardrails away from the tower body. The fasteners are adapted to the fixed shaft and are electrically connected to the drive motor. A first distance sensor is provided on the side of the support plate near the lifting platform, and a second distance sensor adapted to the first distance sensor is provided on the side of the carrier plate near the tower body.

3. The power supply system for a tower crane as described in claim 1, characterized in that, The power distribution cabinet and the control cabinet are also electrically connected to the mains power supply via cables.

4. The power supply system for a tower crane as described in claim 1, characterized in that, The bottom of the buckle plate groove is also provided with a retractable limiting rod, and the arc surface of the base is provided with a limiting hole that matches the limiting rod.

5. The power supply system for a tower crane as described in claim 4, characterized in that, The limiting support frame includes at least one pair of main support rods. The upper end of the main support rod is fixed to the lower end surface of the support plate on the side away from the tower body, and the lower end of the main support rod is fixed to the tower body. A reinforcing support rod is fixed to the lower end surface of the support plate at the corresponding position of the buckle plate groove, and the lower end of the reinforcing support rod is fixed to the tower body.

6. A control method for the power supply system of a tower crane, characterized in that, A power supply system for a tower crane as described in any one of claims 1-5 includes the following steps: S1. Obtain the remaining power in the battery box and send it to the control cabinet; S2. The control cabinet sends corresponding control signals to the flip plate, hydraulic rod, first conveyor belt, second conveyor belt, clamping claw, lifting motor, power supply base and signal receiving module according to the remaining power in the battery box. Each component performs a power swapping operation according to the corresponding control signal.

7. The control method for the power supply system of a tower crane as described in claim 6, characterized in that, Step S1 specifically includes the following steps: S101. Assign each of the aforementioned power supply platforms an independent number; S102. Obtain the remaining power of the battery boxes in each of the power supply platforms; Step S2 specifically includes the following steps: S201. A power supply platform with a remaining battery charge of not less than 80% is designated as a high-power platform, a power supply platform with a remaining battery charge of 20% to 80% is designated as a medium-power platform, a power supply platform with a remaining battery charge of 5% to 20% is designated as a low-power platform, and a power supply platform with a remaining battery charge of less than 5% is designated as an empty-power platform. S202. The battery box of the high-power platform is used to supply the construction power of the tower crane, the battery box of the medium-power platform is used to supplement the main construction power of the tower crane and the power supply of the UPS uninterruptible power supply safety module, the battery box of the low-power platform is used for the air conditioning / fan in the operator's cab of the tower crane or the lighting of the tower crane, and the battery box of the low-power platform does not supply power. S203. When an empty battery platform appears, the control cabinet sends a corresponding first battery swapping signal to the lifting motor and the power supply platform. The lifting motor adjusts its position according to the first battery swapping signal and lowers the lifting platform until the storage platform is level with the empty battery platform. The control cabinet controls the clamping claw to extend the clamping claw, and at the same time, the power supply base flips. When the empty battery box contacts the flip plate, the hydraulic rod extends and drives the flip plate to lower until it overlaps the carrier plate. When the empty battery box is flattened, the clamping claw releases. At the same time, the first conveyor belt, the second conveyor belt, and the third conveyor belt drive simultaneously to transport the battery box to the storage platform, and the fastener fastens the fixed shaft. S204. The control cabinet sends a corresponding second battery swapping signal to the power distribution room and the battery delivery vehicle. The battery delivery vehicle transports the battery box that has been charged in the power distribution room to the ground area of ​​the tower crane. When the lifting platform is lowered to the ground, the empty and fully charged battery boxes are swapped. After the battery box swapping is completed, the ground staff sends a completion signal to the control cabinet. S205. The control cabinet sends a corresponding third battery swapping signal to the lifting motor and the power supply platform according to the completion signal. The lifting motor lifts the fully charged battery box according to the third battery swapping signal until the placement platform is flush with the empty power platform and the flip plate overlaps the carrier plate. The fastener is released, and the first, second, and third conveyor belts simultaneously reverse their rotation to transport the battery box until the power receiving rod is inserted into the docking port. The clamping claws grip the outer periphery of the fixed shaft, and at the same time, the power supply base flips in the opposite direction. The clamping claws and the hydraulic rod retract until the fully charged battery box is placed vertically.

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