Liquid cooling traction machine system

Abstract

The utility model relates to the technical field of elevator traction machines, and discloses a liquid cooling traction machine system which comprises a traction wheel, a liquid cooling device and a liquid cooling device. The traction wheel driving and braking assembly is connected with the traction wheel, the traction wheel driving and braking assembly is provided with a first liquid cooling channel, and the traction wheel driving and braking assembly is used for driving the traction wheel to rotate or braking the traction wheel; the liquid cooling radiator is connected with a first liquid cooling channel of the traction wheel driving brake assembly so as to carry out heat dissipation on the traction wheel driving brake assembly; the liquid cooling radiator is arranged on one side of the traction wheel and radiates heat through airflow generated by rotation of the traction wheel. An electronic fan is omitted, cost is saved, the problem of extra noise caused by abrasion of a fan bearing is fundamentally solved, and using comfort is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator traction machine technology, specifically to a liquid-cooled traction machine system. Background Technology

[0002] As the core power component of an elevator system, the traction machine is responsible for driving the elevator car up and down. The working principle of the traction machine is that the motor drives the traction sheave to rotate, and the friction between the traction rope and the traction sheave realizes the up and down movement of the car, thereby driving the elevator.

[0003] Liquid-cooled traction machine systems utilize the flow of coolant to remove the heat generated during traction machine operation. These systems are typically equipped with radiator assemblies for effective heat dissipation. The radiator assembly includes the radiator itself, an electric fan, and a fan shroud. However, after prolonged operation, the electric fan generates additional noise due to bearing wear, thus affecting user comfort. Utility Model Content

[0004] In view of this, the present invention provides a liquid-cooled traction machine system to solve the problem that the current heat sink components equipped with electric fans will generate additional noise.

[0005] This utility model provides a liquid-cooled traction machine system, including:

[0006] Traction wheel;

[0007] A traction sheave drive and brake assembly is connected to the traction sheave. The traction sheave drive and brake assembly has a first liquid cooling channel. The traction sheave drive and brake assembly is used to drive the traction sheave to rotate or to brake the traction sheave.

[0008] A liquid-cooled radiator is connected to the first liquid-cooled channel of the traction wheel drive brake assembly to dissipate heat from the traction wheel drive brake assembly.

[0009] The liquid-cooled heat sink is located on one side of the traction sheave and uses the airflow generated by the rotation of the traction sheave for heat dissipation.

[0010] The beneficial effects of the aforementioned liquid-cooled traction machine system are as follows: by utilizing the traction sheave to increase the airflow velocity around the liquid-cooled radiator, a cooling effect comparable to that of an electric fan is achieved. Furthermore, this system eliminates the need for an electric fan, fundamentally eliminating the additional noise problem caused by fan bearing wear, thus improving the quietness of elevator operation and enhancing user comfort.

[0011] Furthermore, eliminating the electric fan, fan cover, and associated circuitry reduced the failure rate of system components. The liquid-cooled radiator is arranged coaxially with the traction sheave, saving the axial space occupied by traditional fan modules. Eliminating the fan assembly reduced the overall system weight and lowered the load on the shaft.

[0012] In one alternative embodiment, at least one rib is provided on the end face of the traction sheave facing the liquid-cooled radiator.

[0013] The beneficial effects of the above technical solution are as follows: when the rib rotates with the traction wheel, its structure is similar to a fan blade, which can actively cut the air and form a directional airflow, directly impacting the surface of the liquid-cooled radiator 1, significantly enhancing the air velocity and flow rate, thereby improving the heat exchange efficiency of the radiator.

[0014] In one alternative embodiment, the traction sheave is provided with at least one through hole.

[0015] The beneficial effects of the above technical solution are as follows: the through hole forms a through airflow channel when the traction wheel rotates, which promotes the flow of air from one side of the traction wheel to the other side, enhances the airflow velocity around the traction wheel, enhances the air convection efficiency on the surface of the liquid-cooled radiator, and thus improves the heat exchange efficiency.

[0016] In one optional embodiment, the liquid-cooled traction machine system further includes:

[0017] A protective baffle is installed around the traction sheave;

[0018] Mounting plate, located at the bottom of the protective baffle and traction wheel drive brake assembly;

[0019] The protective baffle has an opening along the axial direction of the traction wheel so that the liquid-cooled radiator faces the traction wheel directly; the liquid-cooled radiator, the protective baffle, the mounting plate, and the traction wheel drive brake assembly form a heat dissipation duct.

[0020] The beneficial effects of the above technical solution are as follows: the protective baffle is set around the traction wheel, and with the axial opening design, the airflow generated by the rotation of the traction wheel is accurately guided to the surface of the liquid-cooled radiator, avoiding airflow leakage and significantly improving the airflow rate and heat exchange efficiency of the radiator.

[0021] The enclosed or semi-enclosed air duct, consisting of a liquid-cooled radiator, protective baffle, mounting plate, and drive and braking assembly, can create localized airflow pressurization, enhancing the forced convection effect on the radiator surface. Furthermore, the protective baffle 3 encloses the traction sheave, preventing external objects from entering the rotating area, reducing the risk of mechanical jamming or wear, and preventing accidental contact with rotating components.

[0022] In one alternative embodiment, the liquid-cooled radiator is fixedly connected to the protective baffle by a positioning bracket.

[0023] In one optional embodiment, the liquid-cooled heat sink includes:

[0024] A heat dissipation box is provided with a media storage cavity inside. The heat dissipation box is provided with a media input pipe and a media output pipe that are respectively connected to the media storage cavity.

[0025] The first medium conveying pipeline is connected at both ends to the outlet of the medium output pipeline and the inlet of the first liquid cooling channel, respectively.

[0026] The second medium conveying pipeline is connected at both ends to the outlet of the first liquid cooling channel and the inlet of the medium input pipeline, respectively.

[0027] The pump body is installed on the first medium conveying pipeline or the second medium conveying pipeline;

[0028] The medium storage cavity, medium output pipe, first medium conveying pipe, first liquid cooling channel, second medium conveying pipe and medium input pipe form a circulating cooling channel.

[0029] In one optional embodiment, the heat sink includes:

[0030] The first vertical pipe is connected to the medium output pipe;

[0031] The second vertical pipe is connected to the medium output pipe and is arranged laterally at intervals from the first vertical pipe;

[0032] At least one row of horizontal pipes, each row of horizontal pipes including multiple horizontal pipes spaced apart in the vertical direction, the horizontal pipes being disposed between a first vertical pipe and a second vertical pipe, the upper surface and / or lower surface of the horizontal pipes being provided with multiple horizontally spaced heat dissipation fins, each pair of adjacent heat dissipation fins having a gap and forming a ventilation channel.

[0033] In one optional embodiment, the traction sheave drive braking assembly includes a motor, a traction sheave, and a brake. The motor is a direct-drive motor, the traction sheave is connected to the motor output shaft, and the brake acts on the motor output shaft. Alternatively, the traction sheave drive braking assembly includes a motor, a reducer, a traction sheave, and a brake. The reducer input shaft is connected to the motor output shaft, the traction sheave is connected to the reducer output shaft, and the brake acts on either the reducer input shaft or the motor output shaft.

[0034] The first liquid cooling channel is located on the motor.

[0035] In one optional embodiment, the liquid-cooled traction machine system further includes a controller, which includes an outer casing, a cooling assembly, a control assembly, and a braking resistor; the cooling assembly is disposed inside the outer casing and divides the inner cavity of the outer casing into a first cavity and a second cavity; the control assembly is disposed in the first cavity and exchanges heat with the cooling assembly; the braking resistor is disposed in the second cavity and exchanges heat with the cooling assembly.

[0036] The cooling assembly has a second liquid cooling channel inside, and the first liquid cooling channel and the second liquid cooling channel are connected by a third medium delivery pipe.

[0037] In one alternative embodiment, the controller is disposed on the side of the traction wheel drive brake assembly; or, the controller is separately disposed from the traction wheel drive brake assembly.

[0038] In summary, the technical solution of this utility model has the following advantages:

[0039] This utility model's traction sheave has the same function as an electric fan, thus eliminating the need for an electric fan, fan guard, and associated circuitry, saving costs and fundamentally eliminating the additional noise problem caused by fan bearing wear, thereby improving user comfort. A protective baffle is located around the traction sheave, and with its axial opening design, it acts as a heat dissipation duct, precisely guiding the airflow generated by the traction sheave's rotation to the surface of the liquid-cooled radiator, preventing airflow loss and significantly improving the radiator's airflow velocity and heat exchange efficiency. Attached Figure Description

[0040] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art 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.

[0041] Figure 1 A schematic diagram of the structure of a liquid-cooled traction machine system provided by this utility model;

[0042] Figure 2 A schematic diagram of the connection structure between the traction wheel and the traction wheel drive and braking assembly in a liquid-cooled traction machine system provided by this utility model;

[0043] Figure 3 A cross-sectional view of a liquid-cooled traction machine system provided by this utility model;

[0044] Figure 4 A cross-sectional view of a liquid-cooled traction machine system provided by this utility model;

[0045] Figure 5 A schematic diagram of the traction wheel drive and braking assembly of a liquid-cooled traction machine system provided by this utility model;

[0046] Figure 6 A schematic diagram illustrating the ventilation effect of the traction wheel drive braking assembly of a liquid-cooled traction machine system provided by this utility model;

[0047] Figure 7 A schematic diagram of the heat dissipation box of a liquid-cooled traction machine system provided by this utility model;

[0048] Figure 8 A schematic diagram of the structure of a liquid-cooled traction machine system provided by this utility model, where only a portion of the horizontal pipes are arranged between the first vertical pipe and the second vertical pipe of the heat dissipation box.

[0049] Figure 9 A partial structural schematic diagram of the heat dissipation box of a liquid-cooled traction machine system provided by this utility model;

[0050] Figure 10 A schematic diagram of the heat dissipation air duct formed by a liquid-cooled traction machine system provided by this utility model;

[0051] Figure 11 This is a schematic diagram of the internal structure of the controller of a liquid-cooled traction machine system provided by this utility model.

[0052] Explanation of reference numerals in the attached figures:

[0053] 1. Liquid-cooled radiator; 11. Heat sink; 111. First vertical pipe; 112. Second vertical pipe; 113. Horizontal pipe; 114. Heat dissipation fins; 12. Medium input pipe; 13. Medium output pipe; 14. Pump body; 15. Positioning bracket; 2. Traction sheave; 21. Rib; 22. Through hole; 3. Protective baffle; 4. Traction sheave drive braking assembly; 41. Motor; 42. Reducer; 43. Brake; 5. Controller; 51. Outer cover; 511. First cavity; 512. Second cavity; 52. Cooling assembly; 521. Second liquid cooling channel; 53. Control assembly; 54. Braking resistor; 6. Mounting plate; 7. Heat dissipation duct. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0055] According to an embodiment of the present invention, a liquid-cooled traction machine system is provided, combined with... Figures 1 to 11 As shown, it includes a traction sheave 2, a traction sheave drive and brake assembly 4, and a liquid-cooled radiator 1.

[0056] The traction wheel drive brake assembly 4 is connected to the traction wheel 2. The traction wheel drive brake assembly 4 has a first liquid cooling channel. The traction wheel drive brake assembly 4 is used to drive the traction wheel 2 to rotate or to brake the traction wheel 2.

[0057] The liquid-cooled radiator 1 is connected to the first liquid-cooling channel of the traction sheave drive brake assembly to dissipate heat from the assembly. The liquid-cooled radiator 1 is located on one side of the traction sheave 2 and utilizes the airflow generated by the rotation of the traction sheave 2 for heat dissipation. The liquid-cooled radiator is directly connected to the liquid-cooling channel of the traction sheave drive brake assembly, efficiently dissipating heat through coolant circulation; simultaneously, the liquid-cooled radiator is positioned on the side of the traction sheave, directly utilizing the airflow generated by the rotation of the traction sheave for secondary heat dissipation, forming a synergistic heat dissipation mode of "active liquid cooling + passive air cooling," thus improving heat dissipation efficiency.

[0058] The aforementioned liquid-cooled traction machine system utilizes the traction sheave to increase the airflow velocity around the liquid-cooled radiator 1, achieving a cooling effect comparable to that of an electric fan. Furthermore, this system eliminates the need for an electric fan, fundamentally eliminating the additional noise problem caused by fan bearing wear, thus improving the quietness of elevator operation and enhancing user comfort.

[0059] Furthermore, eliminating the electric fan, fan cover, and associated circuitry reduces the failure rate of system components. The liquid-cooled radiator 1 and traction sheave 2 are arranged coaxially and laterally, saving the axial space occupied by traditional fan modules. Removing the fan assembly reduces the overall system weight and lowers the load on the shaft.

[0060] In some embodiments, at least one rib 21 is provided on the end face of the traction sheave 2 facing the liquid-cooled radiator 1. When the rib 21 rotates with the traction sheave 2, its structure is similar to a fan blade, which can actively cut the air and form a directional airflow that directly impacts the surface of the liquid-cooled radiator 1, significantly enhancing the air velocity and flow rate, thereby improving the heat exchange efficiency of the radiator. The rotation speed of the rib 21 is synchronized with that of the traction sheave 2. The greater the load (the higher the rotation speed of the traction sheave), the stronger the airflow disturbance, and the heat dissipation capacity automatically matches the heat load demand, avoiding the heat dissipation redundancy or insufficiency caused by the fixed speed of traditional fans.

[0061] In some embodiments, the traction sheave 2 is provided with at least one through hole 22. The cooperation between the rib 21 and the through hole 22 has the effect of blowing or sucking air. When the traction sheave rotates, the through hole 22 forms a through airflow channel, which promotes the flow of air from one side of the traction sheave to the other side, enhances the airflow velocity around the traction sheave, enhances the air convection efficiency on the surface of the liquid-cooled radiator, and thus improves the heat exchange efficiency.

[0062] In some embodiments, the liquid-cooled traction machine system further includes a protective baffle 3 and a mounting plate 6. The protective baffle 3 covers the periphery of the traction sheave 2. The mounting plate 6 is located at the bottom of the protective baffle 3 and the traction sheave drive brake assembly, and is horizontally arranged for mounting and positioning the entire system. The protective baffle 3 has an opening along the axial direction of the traction sheave 2 so that the liquid-cooled radiator 1 faces the traction sheave 2. Figure 10 As shown, the liquid-cooled radiator 1, protective baffle 3, mounting plate 6, and traction wheel drive brake assembly form a heat dissipation duct 7, with the duct opening facing the heat dissipation surface of the liquid-cooled radiator. When the traction wheel rotates, the air in the space formed passes through the radiator's ventilation surface, achieving a heat dissipation effect on the radiator.

[0063] In this embodiment, the protective baffle 3 is installed around the traction wheel 2. With the axial opening design, the airflow generated by the rotation of the traction wheel is precisely guided to the surface of the liquid-cooled radiator 1, preventing the airflow from escaping and significantly improving the airflow rate and heat exchange efficiency of the radiator.

[0064] The enclosed or semi-enclosed air duct formed by the liquid-cooled radiator 1, the protective baffle 3, the mounting plate 6 and the drive and braking assembly can create local airflow pressurization and enhance the forced convection effect on the radiator surface.

[0065] Furthermore, the protective baffle 3 encloses the traction wheel 2 to prevent foreign objects from entering the rotating area, reduce the risk of mechanical jamming or wear, and prevent personnel from accidentally touching the rotating parts.

[0066] In some embodiments, the liquid-cooled radiator 1 is fixedly connected to the protective baffle 3 via positioning brackets 15. More specifically, in this embodiment, four positioning brackets 15 are provided, and the positioning brackets 15 are fixedly mounted on the protective baffle 3 by screws.

[0067] In some embodiments, the liquid-cooled radiator 1 includes a heat sink 11, a first medium delivery pipe, a second medium delivery pipe, and a pump body 14. The heat sink 11 has a medium storage chamber inside, and a medium input pipe 12 and a medium output pipe 13, respectively connected to the medium storage chamber, are provided on the heat sink 11. The two ends of the first medium delivery pipe are connected to the outlet of the medium output pipe 13 and the inlet of the first liquid cooling channel, respectively. The two ends of the second medium delivery pipe are connected to the outlet of the first liquid cooling channel and the inlet of the medium input pipe 12, respectively. The pump body 14 is mounted on either the first or second medium delivery pipe and is used to provide power for the delivery of the medium.

[0068] The medium storage chamber, medium output pipe 13, first medium conveying pipe, first liquid cooling channel, second medium conveying pipe and medium input pipe 12 form a circulating cooling channel to meet the cooling requirements of the traction machine and other heat-generating parts.

[0069] More specifically, combined Figures 7 to 9 As shown, the heat sink 11 includes a first vertical pipe 111, a second vertical pipe 112, and at least one row of horizontal pipes 113. The first vertical pipe 111 is connected to the medium output pipe 13. The second vertical pipe 112 is connected to the medium output pipe 13 and is arranged laterally at intervals from the first vertical pipe 111. The horizontal pipes 113 are arranged in at least one row, and each row of horizontal pipes 113 includes multiple horizontal pipes 113 arranged at intervals in the vertical direction. The horizontal pipes 113 are located between the first vertical pipe 111 and the second vertical pipe 112. The upper surface and / or lower surface of the horizontal pipes 113 are provided with multiple horizontally spaced heat dissipation fins 114. There is a gap between each pair of adjacent heat dissipation fins 114 to form a ventilation channel, and the ventilation channel can be parallel to the axis of the traction sheave 2.

[0070] In this embodiment, the first vertical pipe 111, the second vertical pipe 112, and each horizontal pipe 113 form a medium storage cavity. During heat dissipation, the heat dissipation fins 114 can exchange heat with the air flowing through the ventilation channel, and then exchange heat with the medium in the medium storage cavity.

[0071] The transverse pipe 113 can be configured as one row or multiple rows, depending on actual needs. When multiple rows of transverse pipe 113 are configured, each row of transverse pipe 113 is arranged at intervals along the axis of the traction sheave 2.

[0072] Furthermore, the horizontal pipe 113 is flat, which allows for the arrangement of more horizontal pipes 113 in the vertical space between the first vertical pipe 111 and the second vertical pipe 112, and enables the heat dissipation fins 114 to be more evenly distributed on the surface of the horizontal pipe 113, thereby ensuring uniform heat dissipation.

[0073] In some embodiments, the traction sheave drive braking assembly includes a motor 41, a traction sheave 2, and a brake 43. The motor 41 is a direct drive motor, the traction sheave 2 is connected to the motor output shaft, and the brake 43 acts on the motor output shaft.

[0074] As an alternative embodiment, the traction wheel drive braking assembly includes a motor 41, a reducer 42, a traction wheel 2, and a brake 43. The input shaft of the reducer is connected to the output shaft of the motor, the traction wheel 2 is connected to the output shaft of the reducer, and the brake 43 acts on the input shaft of the reducer or the output shaft of the motor.

[0075] In some embodiments, the motor is a liquid-cooled motor, and a first liquid-cooling channel is provided on the motor 41. The motor is a permanent magnet synchronous motor.

[0076] In some embodiments, combined with Figure 11 As shown, the liquid-cooled traction machine system also includes a controller 5, which includes an outer casing 51, a cooling component 52, a control component 53, and a braking resistor 54. The cooling component 52 is disposed inside the outer casing 51, and divides the inner cavity of the outer casing 51 into a first cavity 511 and a second cavity 512. The control component 53 is disposed in the first cavity 511, and the control component 53 exchanges heat with the cooling component 52. The braking resistor 54 is disposed in the second cavity 512, and the braking resistor 54 exchanges heat with the cooling component 52.

[0077] In this embodiment, by setting up a cooling component 52 and dividing the inner cavity of the outer casing 51 into a first cavity 511 and a second cavity 512, heat exchange between the control component 53 and the braking resistor 54 and the cooling component 52 is achieved, which can effectively improve heat dissipation efficiency and avoid the problem of heat accumulation caused by natural cooling. Especially when the elevator is frequently used, the cooling component 52 can promptly remove the heat generated by the braking resistor 54, reducing the risk of overheating. Due to the introduction of the cooling component 52 and the reasonable cavity division design, the cooling component 52 can promptly remove the heat generated by the braking resistor 54, preventing heat from accumulating inside the braking resistor 54. Even if the parameters of the braking resistor 54 are small, the braking resistor 54 can meet the system requirements through the effective heat dissipation of the cooling component 52, without having to rely on larger parameters to compensate for insufficient heat dissipation. Therefore, a braking resistor 54 with smaller parameters and lower cost can be selected without affecting the overall performance, reducing the performance specification requirements of the braking resistor 54, thereby reducing the size of the braking resistor 54.

[0078] In some embodiments, the cooling assembly 52 is provided with a second liquid cooling channel 521 inside, and the first liquid cooling channel and the second liquid cooling channel are connected by a third medium delivery pipe to meet the cooling requirements of the traction machine, controller, braking resistor and other heat-generating parts.

[0079] In some embodiments, the controller 5 is mechanically connected to the side of the traction wheel drive brake assembly and is installed and secured, so that the controller 5 and the traction wheel drive brake assembly are installed as a single unit, saving installation space.

[0080] As an alternative embodiment, the controller 5 is separately configured from the traction wheel drive brake assembly, and is not assembled together, which avoids the problem of local overheating caused by excessive concentration of components, and further improves the stability and service life of the system.

[0081] The working principle of the above-mentioned liquid-cooled traction machine system is as follows: During operation, the heat generated by the motor 41 and controller 5 is transferred to the heat sink 11 through the liquid cooling medium and liquid cooling channels. The heat sink 11 is equipped with heat dissipation fins 114, which dissipate heat into the surrounding environment, thereby releasing the system's heat into the atmosphere. The traction sheave has a blower function, which can increase the airflow velocity around the heat dissipation fins 114. Through careful arrangement, the installed system forms a heat dissipation air duct 7, which directly faces the heat dissipation surface of the liquid-cooled radiator 1. When the traction sheave is working, it generates a blowing or suction effect towards the radiator, which helps to enhance the heat dissipation capacity of the heat sink 11 and ensures that the system's heat dissipation requirements are met.

[0082] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A liquid-cooled tractor system, comprising: a traction wheel (2); a traction wheel driving and braking assembly (4) connected with the traction wheel (2), the traction wheel driving and braking assembly (4) having a first liquid cooling channel, the traction wheel driving and braking assembly (4) being used to drive the traction wheel (2) to rotate or brake the traction wheel (2); a liquid-cooled radiator (1) connected with the first liquid cooling channel of the traction wheel driving and braking assembly (4) to dissipate heat of the traction wheel driving and braking assembly (4); characterized in that the liquid-cooled radiator (1) is arranged on one side of the traction wheel (2) and dissipates heat by using airflow generated by rotation of the traction wheel (2).

2. The liquid-cooled scooter system of claim 1, wherein, At least one rib (21) is arranged on an end face of the traction wheel (2) facing the liquid-cooled radiator (1).

3. The liquid-cooled scooter system of claim 1, wherein, At least one through hole (22) is arranged on the traction wheel (2).

4. The liquid-cooled scooter system of any one of claims 1-3, wherein, The liquid-cooled tractor system further comprises: a protective baffle (3) covering the periphery of the traction wheel (2); a mounting plate (6) arranged at the bottom end of the protective baffle (3) and the traction wheel driving and braking assembly (4); the protective baffle (3) is provided with an opening in the axial direction of the traction wheel (2) to allow the liquid-cooled radiator (1) to face the traction wheel (2); the liquid-cooled radiator (1), the protective baffle (3), the mounting plate (6) and the traction wheel driving and braking assembly (4) form a heat dissipation air duct (7).

5. The liquid-cooled scooter system of claim 4, wherein, The liquid-cooled radiator (1) is fixedly connected to the protective baffle (3) by a positioning bracket (15).

6. The liquid-cooled scooter system of any one of claims 1-3, wherein, The liquid-cooled radiator (1) comprises: a heat dissipation box (11) internally provided with a medium storage cavity, the heat dissipation box (11) being provided with a medium input pipeline (12) and a medium output pipeline (13) respectively connected with the medium storage cavity; a first medium conveying pipeline having two ends respectively connected with the outlet of the medium output pipeline (13) and the inlet of the first liquid cooling channel; a second medium conveying pipeline having two ends respectively connected with the outlet of the first liquid cooling channel and the inlet of the medium input pipeline (12); a pump body (14) arranged on the first medium conveying pipeline or the second medium conveying pipeline; the medium storage cavity, the medium output pipeline (13), the first medium conveying pipeline, the first liquid cooling channel, the second medium conveying pipeline and the medium input pipeline (12) form a circulating cooling flow channel.

7. The liquid-cooled scooter system of claim 6, wherein, The heat dissipation box (11) comprises: a first vertical pipeline (111) in communication with the medium output pipeline (13); a second vertical pipeline (112) in communication with the medium output pipeline (13) and arranged transversely spaced apart from the first vertical pipeline (111); at least one row of transverse pipelines (113), each row of the transverse pipelines (113) comprising a plurality of transverse pipelines (113) arranged spaced apart in the vertical direction, the transverse pipelines (113) being arranged between the first vertical pipeline (111) and the second vertical pipeline (112), the upper surface and / or the lower surface of the transverse pipelines (113) being provided with a plurality of transversely spaced apart heat dissipation fins (114), each adjacent two of the heat dissipation fins (114) having a spacing and forming a ventilation channel.

8. The liquid-cooled scooter system of any one of claims 1-3, wherein, The traction wheel driving and braking assembly (4) comprises a motor (41), a traction wheel (2) and a brake (43), the motor (41) is a direct drive motor, the traction wheel (2) is connected with the motor output shaft, and the brake (43) acts on the motor output shaft; or, the traction wheel driving and braking assembly (4) comprises a motor (41), a speed reducer (42), a traction wheel (2) and a brake (43), the speed reducer input shaft is connected with the motor output shaft, the traction wheel (2) is connected with the speed reducer output shaft, and the brake (43) acts on the speed reducer input shaft or the motor output shaft. The first liquid cooling channel is arranged on the motor (41).

9. The liquid-cooled scooter system of claim 8, wherein, The liquid-cooled traction machine system further comprises a controller (5), the controller (5) comprises an outer cover (51), a cooling assembly (52), a control assembly (53) and a braking resistor (54); the cooling assembly (52) is arranged inside the outer cover (51), the cooling assembly (52) divides the inner cavity of the outer cover (51) into a first cavity (511) and a second cavity (512); the control assembly (53) is arranged in the first cavity (511), and the control assembly (53) exchanges heat with the cooling assembly (52); the braking resistor (54) is arranged in the second cavity (512), and the braking resistor (54) exchanges heat with the cooling assembly (52); The inside of the cooling assembly (52) is provided with a second liquid cooling channel, and the first liquid cooling channel and the second liquid cooling channel are communicated through a third medium conveying pipeline.

10. The liquid-cooled scooter system of claim 9, wherein, The controller (5) is arranged on the side of the traction wheel driving and braking assembly; or, the controller (5) is arranged separately from the traction wheel driving and braking assembly.

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