Pure electric tire crane

Abstract

This utility model provides a pure electric tire-mounted crane, relating to the field of engineering machinery technology. The pure electric tire-mounted crane includes: a wheeled carrier, a main winch drive unit, a luffing winch drive unit, and a slewing drive unit; the main winch drive unit, the luffing winch drive unit, and the slewing drive unit are respectively mounted on the wheeled carrier, and each of the wheeled carrier, the main winch drive unit, the luffing winch drive unit, and the slewing drive unit is driven by its corresponding electric motor. This can alleviate the technical defects of traditional tire-mounted cranes, such as low transmission efficiency, high pollution, high energy consumption, and high noise, and is conducive to energy recovery, reducing overall equipment energy consumption and operating noise.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a pure electric tire crane. Background Technology

[0002] Rubber-tired cranes are key equipment for lifting and transferring goods in ports, logistics centers, and railway freight yards. Their main operating mechanisms (including the main winch, luffing winch, and slewing mechanism) are currently generally driven by hydraulic motors. These systems typically use a traditional fuel engine to drive a hydraulic pump, which in turn powers the hydraulic motor. However, during load lowering, slewing, and braking operations of the winch mechanism, the existing fuel engine cannot effectively recover energy, resulting in low energy efficiency. Furthermore, these devices suffer from high energy consumption, severe emissions, and high operating noise, making it difficult to meet increasingly stringent environmental regulations and the requirements for green and low-carbon development. Utility Model Content

[0003] The purpose of this utility model is to provide a pure electric tire crane to alleviate the technical defects of existing tire cranes, such as high pollution and high noise.

[0004] In the first aspect, the pure electric tire crane provided by this utility model includes: a wheeled vehicle, a main winch drive unit, a luffing winch drive unit, and a slewing drive unit; The main winch drive unit, the luffing winch drive unit, and the slewing drive unit are respectively mounted on the wheeled vehicle, and the wheeled vehicle, the main winch drive unit, the luffing winch drive unit, and the slewing drive unit are each driven by their respective electric motors.

[0005] In conjunction with the first aspect, this utility model provides a first possible implementation of the first aspect, wherein the wheeled vehicle, the main winch drive unit, the luffing winch drive unit, and the slewing drive unit are respectively connected to the energy storage device.

[0006] In conjunction with the first possible implementation of the first aspect, this utility model provides a second possible implementation of the first aspect, wherein the pure electric tire crane further includes a high-voltage power distribution device, and the wheeled vehicle, the main winch drive device, the luffing winch drive device and the slewing drive device are respectively connected to the energy storage device via the high-voltage power distribution device.

[0007] In conjunction with the second possible implementation of the first aspect, this utility model provides a third possible implementation of the first aspect, wherein the wheeled vehicle is equipped with a walking motor, an automatic transmission, and a walking controller; The walking motor is connected to the automatic transmission, and the high-voltage power distribution device is connected to the walking motor via the walking controller.

[0008] In conjunction with the second possible implementation of the first aspect, this utility model provides a fourth possible implementation of the first aspect, wherein the main hoist driving device includes: a main hoist motor, a main hoist reducer, and a main hoist controller; The main winch motor is connected to the main winch reducer, and the high-voltage power distribution device is connected to the main winch motor via the main winch controller.

[0009] In conjunction with the second possible implementation of the first aspect, this utility model provides a fifth possible implementation of the first aspect, wherein the luffing winch drive device includes: a luffing winch motor, a luffing winch reducer, and a luffing winch controller; The luffing winch motor is connected to the luffing winch reducer, and the high-voltage power distribution device is connected to the luffing winch motor via the luffing winch controller.

[0010] In conjunction with the second possible implementation of the first aspect, this utility model provides a sixth possible implementation of the first aspect, wherein the rotary drive device includes: a rotary motor, a rotary reducer, and a rotary controller; The rotary motor is connected to the rotary reducer, and the high-voltage power distribution device is connected to the rotary motor via the rotary controller.

[0011] In conjunction with the second possible implementation of the first aspect, this utility model provides a seventh possible implementation of the first aspect, wherein the pure electric tire crane further includes a hydraulic drive component; The hydraulic drive components include: a main pump motor, a hydraulic pump, and a hydraulic controller; The main pump motor is connected to the hydraulic pump via a drive, and the high-voltage power distribution device is connected to the main pump motor via the hydraulic controller.

[0012] In conjunction with the seventh possible implementation of the first aspect, this utility model provides an eighth possible implementation of the first aspect, wherein the wheeled vehicle is equipped with a hydraulic support device, and the hydraulic support device is in fluid communication with the hydraulic pump.

[0013] In conjunction with the first aspect, this utility model provides a ninth possible implementation of the first aspect, wherein a boom hinged about a horizontal axis is mounted on the wheeled vehicle, a first traction rope is connected to the top of the boom, and the first traction rope is connected to the luffing winch drive mechanism.

[0014] In conjunction with the ninth possible implementation of the first aspect, this utility model provides a tenth possible implementation of the first aspect, wherein a pulley is mounted on the top of the boom and a second traction rope is wound around the pulley, the second traction rope being connected to the main winch drive unit.

[0015] In conjunction with the first aspect, this utility model provides an eleventh possible implementation of the first aspect, wherein the wheeled vehicle, the main winch drive unit, the luffing winch drive unit, and the slewing drive unit are each equipped with a braking device.

[0016] The present invention provides the following beneficial effects: by mounting the main winch drive unit, the luffing winch drive unit, and the slewing drive unit on a wheeled vehicle, and by driving each of the wheeled vehicle, the main winch drive unit, the luffing winch drive unit, and the slewing drive unit by their respective electric motors, the technical defects of traditional tire cranes, such as low transmission efficiency, high pollution, high energy consumption, and high noise, can be alleviated, which is conducive to energy recovery and reducing the overall energy consumption and operating noise of the equipment.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 A schematic diagram of a pure electric tire-mounted crane provided for an embodiment of this utility model.

[0020] Icons: 100 - Wheeled vehicle; 110 - Travel motor; 120 - Automatic transmission; 130 - Travel controller; 200 - Main winch drive unit; 210 - Main winch motor; 220 - Main winch reducer; 230 - Main winch controller; 300 - Luffing winch drive unit; 310 - Luffing winch motor; 320 - Luffing winch reducer; 330 - Luffing winch controller; 400 - Slewing drive unit; 410 - Slewing motor; 420 - Slewing reducer; 430 - Slewing controller; 500 - Energy storage device; 600 - High-voltage power distribution device; 700 - Hydraulic drive unit; 710 - Main pump motor; 720 - Hydraulic pump; 730 - Hydraulic controller; 800 - Boom; 810 - First traction rope; 820 - Pulley; 830 - Second traction rope. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are only used to describe differences in name and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1 As shown, the pure electric tire crane provided in this embodiment of the present invention includes: a wheeled vehicle 100, a main winch drive unit 200, a luffing winch drive unit 300, and a slewing drive unit 400; the main winch drive unit 200, the luffing winch drive unit 300, and the slewing drive unit 400 are respectively mounted on the wheeled vehicle 100, and the wheeled vehicle 100, the main winch drive unit 200, the luffing winch drive unit 300, and the slewing drive unit 400 are each driven by their respective corresponding electric motors.

[0025] Specifically, the wheeled vehicle 100 serves as the mobile platform for the entire crane, supporting all its working mechanisms and possessing autonomous driving capabilities. The main winch drive unit 200, the luffing winch drive unit 300, and the slewing drive unit 400 are all fixedly mounted on the wheeled vehicle 100, respectively used to realize the lifting action of the hook, the pitch adjustment of the boom, and the overall slewing operation of the superstructure. The wheeled vehicle 100 adopts an all-wheel drive or rear-wheel drive electric chassis structure, powered by an on-board high-voltage power battery pack (such as a lithium-ion battery). The electric control system drives the wheel-side motors or central drive motor mounted on the axle to achieve forward, reverse, and steering functions. This electric drive method eliminates the traditional internal combustion engine-gearbox-driveshaft power transmission chain, significantly reducing mechanical transmission losses and operating noise.

[0026] It should be noted that the wheeled vehicle 100, main winch drive unit 200, luffing winch drive unit 300, and slewing drive unit 400 are all powered by the same high-voltage DC power supply system. This power supply system mainly includes a power battery pack, DC / DC converter, battery management system (BMS), and power distribution unit. The start-up, stop-start, speed regulation, and energy feedback of each drive system are coordinated and managed by the central controller, realizing optimized power distribution and dynamic response matching among multiple motors. Compared with traditional diesel-powered tire cranes, the pure electric drive architecture completely eliminates the internal combustion engine and its associated fuel supply, cooling, and exhaust gas treatment systems, fundamentally eliminating carbon emissions and exhaust pollution problems. At the same time, by eliminating the complex fuel engine and hydraulic transmission, the energy conversion levels are reduced, resulting in a significant improvement in overall transmission efficiency and a significant increase in the overall energy efficiency of the machine compared to traditional models.

[0027] Furthermore, the electric drive system operates smoothly with minimal vibration and low noise. Tests show that, under typical operating conditions, the crane operating noise described in this embodiment is significantly lower than that of comparable diesel engine models, making it particularly suitable for noise-sensitive scenarios such as urban centers, residential areas, and nighttime construction.

[0028] In this embodiment of the utility model, the wheeled vehicle 100, the main winch drive unit 200, the luffing winch drive unit 300, and the slewing drive unit 400 are respectively connected to the energy storage device 500.

[0029] Among them, the energy storage device 500 can be selected from lithium-ion battery packs, supercapacitors or their hybrid energy storage systems, and is installed in the chassis frame of the wheeled vehicle 100. It has high energy density and cycle life, and is equipped with a battery management system (BMS) to ensure operational safety.

[0030] Furthermore, the pure electric tire crane also includes a high-voltage power distribution device 600, and the wheeled vehicle 100, the main winch drive device 200, the luffing winch drive device 300 and the slewing drive device 400 are respectively connected to the energy storage device 500 via the high-voltage power distribution device 600.

[0031] The energy storage device 500 supplies power to each motor through the high-voltage power distribution device 600. The high-voltage power distribution device 600 is located between the energy storage device 500 and each driving device, serving as the core node for power distribution and management. It includes components such as high-voltage contactors, fuse protection devices, current and voltage sensors, and distribution busbars. The high-voltage power distribution device 600 adopts a DC high-voltage power distribution architecture (e.g., 700V–1000V), effectively reducing line current, minimizing transmission losses, and improving overall power utilization efficiency.

[0032] During operation, when any drive device is in braking or load release mode (such as when a load is lowered, the crane boom is lowered, or the vehicle decelerates), the corresponding motor switches to generator mode. The generated regenerative energy is rectified by the inverter and returned to the high-voltage bus. The high-voltage power distribution device 600 then coordinates the charging of the energy storage device 500, achieving energy recovery and reuse. Furthermore, the pure electric tire-mounted crane can also be equipped with an energy management system (EMS) to monitor the power consumption status, battery state of charge (SOC), and temperature parameters of each subsystem in real time, dynamically optimizing power allocation strategies to ensure safe and efficient system operation.

[0033] Furthermore, the wheeled vehicle 100 is equipped with a travel motor 110, an automatic transmission 120, and a travel controller 130; the travel motor 110 is connected to the automatic transmission 120, and the high-voltage power distribution device 600 is connected to the travel motor 110 via the travel controller 130.

[0034] The travel motor 110 is a permanent magnet synchronous motor or an asynchronous motor. Its output end is connected to the input end of the automatic transmission 120 via a drive shaft. The output end of the automatic transmission 120 is connected to the axle and wheels, enabling the vehicle to move forward, backward, and adjust speed. The travel controller 130 is a dedicated motor controller (such as an IGBT inverter) that receives command signals from the vehicle control unit (VCU) and adjusts the torque and speed of the travel motor 110 to achieve precise traction control and dynamic response. During deceleration and braking, the travel motor 110 can be driven by a reverse drive to convert kinetic energy into electrical energy and store it in the energy storage device 500.

[0035] Furthermore, the main winch drive device 200 includes: a main winch motor 210, a main winch reducer 220, and a main winch controller 230; the main winch motor 210 is connected to the main winch reducer 220 in a transmission connection, and the high-voltage power distribution device 600 is connected to the main winch motor 210 via the main winch controller 230.

[0036] The main winch motor 210 is a permanent magnet synchronous motor or asynchronous motor, featuring high starting torque, a wide speed range, and excellent dynamic response performance, making it suitable for heavy-duty lifting operations under frequent start-stop and speed-changing conditions. The output of the main winch motor 210 is connected to the input of the main winch reducer 220 via a coupling or gear connection. After reduction and torque amplification, it drives the drum to rotate, realizing the winding and unwinding of the wire rope. The main winch controller 230 is a dedicated AC variable frequency speed control device. Its input is connected to the high-voltage DC power supplied by the energy storage device 500 via the high-voltage power distribution device 600. Internally integrated with an IGBT power module, it inverts the DC power into three-phase AC power with adjustable frequency and voltage, precisely controlling the speed, torque, and direction of the main winch motor 210.

[0037] More importantly, during the descent of the load, the main winch motor 210 operates in regenerative power generation mode. At this time, the drum rotates actively under the action of the load, driving the main winch motor 210 to generate electricity. The generated electrical energy is rectified and regulated by the main winch controller 230 and fed back to the high-voltage power distribution device 600, and finally fed back to the energy storage device 500 for storage. This achieves potential energy recovery and effectively reduces the overall energy consumption of the machine.

[0038] Furthermore, the luffing winch drive unit 300 includes: a luffing winch motor 310, a luffing winch reducer 320, and a luffing winch controller 330. The luffing winch motor 310 is driven by the luffing winch reducer 320, and the high-voltage power distribution device 600 is connected to the luffing winch motor 310 via the luffing winch controller 330. The output end of the high-voltage power distribution device 600 is connected to the luffing winch motor 310 via the luffing winch controller 330. The output shaft of the luffing winch motor 310 is driven by the input end of the luffing winch reducer 320, and the output end of the reducer drives the luffing wire rope drum to rotate, realizing the luffing action of the boom. The luffing winch controller 330 receives command signals from the central control system, adjusts the speed and torque of the luffing winch motor 310, and also has regenerative braking control function.

[0039] Furthermore, the slewing drive device 400 includes: a slewing motor 410, a slewing reducer 420, and a slewing controller 430; the slewing motor 410 is drive-connected to the slewing reducer 420, and the high-voltage power distribution device 600 is connected to the slewing motor 410 via the slewing controller 430. The slewing motor 410 is a permanent magnet synchronous motor, which has the advantages of high efficiency, small size, and wide speed range. Its output shaft is connected to the input end of the slewing reducer 420 via a coupling or gear transmission. The slewing reducer 420 adopts a planetary gear reduction mechanism, is fixed to the upper frame, and its output end is connected to an external gear ring or slewing bearing, thereby driving the entire upper frame to rotate. The high-voltage power distribution device 600 supplies power to the slewing motor 410 via the slewing controller 430. The slewing controller 430 receives command signals from the operating system and adjusts the motor torque and speed in real time to achieve smooth start-up, precise positioning, and stepless speed regulation. During the slewing braking phase, the slewing motor 410 can also convert kinetic energy into electrical energy through the slewing controller 430 and feed it back to the energy storage device 500. The above-mentioned energy recovery mechanism realizes the directional feedback and storage of electrical energy through the high-voltage power distribution device 600, effectively reducing energy waste and improving the overall energy efficiency.

[0040] Furthermore, the pure electric tire-mounted crane also includes a hydraulic drive unit 700; the hydraulic drive unit 700 includes: a main pump motor 710, a hydraulic pump 720, and a hydraulic controller 730; the main pump motor 710 is driven by the hydraulic pump 720, and the high-voltage power distribution device 600 is connected to the main pump motor 710 via the hydraulic controller 730. The main pump motor 710 is a high-performance permanent magnet synchronous motor, and its output shaft is rigidly connected to the hydraulic pump 720 via a coupling, forming an integrated "electric-motor-pump" power unit. The high-voltage power distribution device 600 is connected to the main pump motor 710 via the hydraulic controller 730, allowing the start / stop, pressure, and flow of the hydraulic system to be precisely controlled by the electronic control system.

[0041] The hydraulic controller 730 can be a programmable logic controller (PLC) or a dedicated hydraulic electronic control unit (HECU). It receives command signals from the operating handle, sensors, and central control system to adjust the speed and torque of the main pump motor 710, thereby achieving the energy-saving control effect of a variable pump. Compared with the traditional method of using an engine to drive a constant-speed oil pump, this implementation avoids overflow losses and no-load power consumption, significantly improving the energy utilization efficiency of the hydraulic system.

[0042] Furthermore, the wheeled vehicle 100 is equipped with hydraulic support devices, which are fluidly connected to the hydraulic pump 720. These hydraulic support devices (such as hydraulic outrigger cylinders) are located at the four corners of the wheeled vehicle 100 and are fluidly connected to the hydraulic pump 720 via high-pressure hydraulic lines. When the crane enters the working state, the hydraulic controller 730 starts the main pump motor 710, driving the hydraulic pump 720 to supply oil to the outrigger cylinders, completing the automatic leveling and support actions.

[0043] Furthermore, a boom 800, hinged around a horizontal axis, is mounted on the wheeled vehicle 100. A first traction rope 810 is connected to the top of the boom 800, and the first traction rope 810 is connected to the luffing winch drive unit 300. The base of the boom 800 is connected to a support on the vehicle body via a pin structure, forming a stable luffing hinge point. A pulley system is installed at the top of the boom 800. One end of the first traction rope 810 is fixed to a drum connected to the output shaft of the luffing winch reducer 320. After being led out through the pulley system, it is anchored at a suitable position at the front or middle of the boom, thereby achieving the luffing operation of the boom 800 by winding and unwinding the first traction rope 810.

[0044] Furthermore, a pulley 820 and a second traction rope 830 are installed at the top of the boom 800, and the second traction rope 830 is connected to the main winch drive unit 200. The second traction rope 830 is wound around the pulley 820, with one end fixedly connected to the drum of the main winch drive unit 200, and the other end connected to the hook assembly. When the main winch motor 210 rotates in both directions, it drives the drum to rotate through the main winch reducer 220, thereby winding and unwinding the second traction rope 830, realizing the vertical lifting and lowering movement of the suspended load.

[0045] Furthermore, the wheeled vehicle 100, main winch drive unit 200, luffing winch drive unit 300, and slewing drive unit 400 are each equipped with braking devices, such as disc brakes or electromagnetic brakes. These braking devices are connected to the vehicle control system, enabling rapid dynamic braking and parking locking during operation. More importantly, each motor has regenerative braking capability. During load descent (such as lowering a heavy object or lowering the boom) or deceleration, potential or kinetic energy can be converted into electrical energy through reverse power generation by the motor. This electrical energy is then fed back to the onboard energy storage device (such as a lithium-ion battery pack or supercapacitor) via an inverter, thereby achieving energy recovery and utilization.

[0046] The pure electric tire-mounted crane described in the above embodiments utilizes an electric motor to directly drive the wheeled vehicle, main winch, luffing, and slewing mechanisms, completely eliminating the traditional power transmission path of an internal combustion engine + gearbox + drive shaft. This reduces frictional losses and no-load power consumption in multi-stage mechanical transmissions, significantly improving overall transmission efficiency. The entire machine can adopt a 700V~1000V high-voltage DC power distribution architecture (through high-voltage power distribution device 600), effectively reducing line current, minimizing cable heating and transmission losses under high-power conditions, and improving energy utilization. The drive system is powered by a single energy storage device 500 (such as a lithium battery pack or hybrid energy storage), and the power distribution of each subsystem is coordinated by a central controller to avoid local overload or resource waste, achieving dynamic response matching and load balancing. When the wheeled vehicle 100 decelerates, the travel motor 110 can generate electricity in reverse, feeding the kinetic energy back to the energy storage device 500. During the descent of the load, the main winch drive unit 200's main winch motor 210 enters power generation mode, converting potential energy into electrical energy. When the boom 800 is lowered, the luffing winch drive unit 300's luffing motor 310 performs regenerative braking, recovering gravitational potential energy. During braking, the slewing drive unit 400's slewing motor 410 can also feed back kinetic energy and convert it into electrical energy, storing it in the energy storage device 500. All four operating conditions described above can convert mechanical energy into electrical energy and store it in the energy storage device 500, forming a closed-loop energy cycle, reducing overall energy consumption and saving operating costs.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pure electric tire-mounted crane, characterized in that, include: Wheeled vehicle (100), main winch drive unit (200), luffing winch drive unit (300) and slewing drive unit (400). The main winch drive unit (200), the luffing winch drive unit (300), and the slewing drive unit (400) are respectively mounted on the wheeled vehicle (100), and the wheeled vehicle (100), the main winch drive unit (200), the luffing winch drive unit (300), and the slewing drive unit (400) are each driven by their respective electric motors.

2. The pure electric tire-mounted crane according to claim 1, characterized in that, The wheeled vehicle (100), the main winch drive unit (200), the luffing winch drive unit (300), and the slewing drive unit (400) are respectively connected to the energy storage device (500).

3. The pure electric tire-mounted crane according to claim 2, characterized in that, The pure electric tire crane also includes a high-voltage power distribution device (600), and the wheeled vehicle (100), the main winch drive device (200), the luffing winch drive device (300) and the slewing drive device (400) are respectively connected to the energy storage device (500) via the high-voltage power distribution device (600).

4. The pure electric tire-mounted crane according to claim 3, characterized in that, The wheeled vehicle (100) is equipped with a travel motor (110), an automatic transmission (120), and a travel controller (130). The walking motor (110) is connected to the automatic transmission (120) for transmission, and the high-voltage power distribution device (600) is connected to the walking motor (110) via the walking controller (130).

5. The pure electric tire-mounted crane according to claim 3, characterized in that, The main winch drive device (200) includes: a main winch motor (210), a main winch reducer (220), and a main winch controller (230). The main winch motor (210) is connected to the main winch reducer (220) for transmission, and the high voltage power distribution device (600) is connected to the main winch motor (210) via the main winch controller (230).

6. The pure electric tire-mounted crane according to claim 3, characterized in that, The luffing winch drive device (300) includes: a luffing winch motor (310), a luffing winch reducer (320), and a luffing winch controller (330). The luffing winch motor (310) is connected to the luffing winch reducer (320) for transmission, and the high-voltage power distribution device (600) is connected to the luffing winch motor (310) via the luffing winch controller (330).

7. The pure electric tire-mounted crane according to claim 3, characterized in that, The rotary drive device (400) includes: a rotary motor (410), a rotary reducer (420), and a rotary controller (430). The rotary motor (410) is connected to the rotary reducer (420) for transmission, and the high-voltage power distribution device (600) is connected to the rotary motor (410) via the rotary controller (430).

8. The pure electric tire-mounted crane according to claim 3, characterized in that, The pure electric tire crane also includes a hydraulic drive unit (700). The hydraulic drive device (700) includes: a main pump motor (710), a hydraulic pump (720), and a hydraulic controller (730). The main pump motor (710) is connected to the hydraulic pump (720) via a drive, and the high-voltage power distribution device (600) is connected to the main pump motor (710) via the hydraulic controller (730).

9. The pure electric tire-mounted crane according to claim 8, characterized in that, The wheeled vehicle (100) is equipped with a hydraulic support device, which is in fluid communication with the hydraulic pump (720).

10. The pure electric tire-mounted crane according to claim 1, characterized in that, The wheeled vehicle (100) is equipped with a boom (800) hinged around a horizontal axis, and a first traction rope (810) is connected to the top of the boom (800). The first traction rope (810) is connected to the luffing winch drive unit (300).

11. The pure electric tire-mounted crane according to claim 10, characterized in that, The top of the boom (800) is equipped with a pulley (820) and a second traction rope (830) wound around the pulley (820), the second traction rope (830) being connected to the main winch drive unit (200).

12. The pure electric tire-mounted crane according to any one of claims 1 to 11, characterized in that, The wheeled vehicle (100), the main winch drive unit (200), the luffing winch drive unit (300), and the slewing drive unit (400) are each equipped with braking devices.

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