Assembled electric pull-rod assembly and assembly method

WO2026165694A1PCT designated stage Publication Date: 2026-08-13SUKULE INTELLIGENT TECHNOLOGY (GUANGZHOU) CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-02-05
Publication Date
2026-08-13

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Abstract

An assembled electric pull-rod assembly, comprising: an electric pull rod (1) and an assembly module (2) detachably mounted behind the electric pull rod. The electric pull rod (1) comprises a multi-section telescopic rod (11), a pull rod handle (12) mounted on the multi-section telescopic rod (11), a power supply (13) provided on the bottom of the multi-section telescopic rod (11), a fitting seat (14) provided below the multi-section telescopic rod (11), and a powered wheel (15) provided below the fitting seat (14) and driven by the power supply (13). The assembly module (2) comprises a fitting head (21), a functional assembly (22) provided behind the fitting head (21), and a driven wheel (23) mounted below the functional assembly (22); and the fitting seat (14) and the fitting head (21) are detachably connected to each other, and are fixed by screwing bolts (3) at the joint. In the assembled electric pull-rod assembly, the connection structures of components of the electric pull rod (1) are optimized, thereby improving the overall performance and reliability; and different towing configurations and different driven assemblies can be freely combined by means of a power assembly provided at the front portion.
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Description

An assembled electric pull rod assembly and its assembly method Technical Field

[0001] This invention relates to an assembled electric pull rod assembly and its assembly method. Background Technology

[0002] With the increasingly widespread application of modern electric equipment in various fields, electric pull rods, as a common power transmission device, have been widely used in various devices, especially in transportation vehicles such as electric suitcases, electric scooters, and electric trolleys. The main function of electric pull rods is to provide convenient extension, retraction, and traction capabilities through power drive to adapt to different usage needs and scenarios. However, existing electric pull rod structures have several technical defects in their design and use, affecting their performance stability and applicability.

[0003] First, the connection of the electric linkage structure is not stable enough, especially at the connection between the drive rod and the driven component. In traditional designs, the connection between the drive rod and the driven component usually relies on simple plug-in or slot-type methods, lacking sufficient fastening measures. During long-term use, vibration, load changes, or external forces can easily cause the connection to loosen or fall off, affecting the service life and safety of the equipment.

[0004] Secondly, existing electric pull rods are complex to assemble, and some designs lack sufficient simplicity and precision in their connection methods. The installation process typically requires the coordination of multiple components, and disassembly or adjustment is inconvenient, leading to low production efficiency and increased difficulty in maintenance and repair. This inconvenient assembly method not only increases manufacturing and maintenance costs but also negatively impacts the user experience.

[0005] In addition, existing electric pull rod assemblies are mostly single assemblies, which cannot be used in combination with multiple functional components, resulting in poor flexibility and reducing the scope of application.

[0006] Regarding structural adjustability, existing electric linkage designs use a relatively simple telescopic connection between the body rod and the front rod, failing to fully consider the flexibility required for various occasions and user needs. This limits the product's adaptability, making it unable to cope with more complex usage scenarios and affecting its versatility. Summary of the Invention

[0007] The purpose of this invention is to provide an assembled electric pull rod assembly. By optimizing the connection structure and power system of the various components of the electric pull rod, a series of technical problems such as the stability of the pull rod structure, ease of assembly, power transmission efficiency, adjustability, and safety are solved, thereby improving the overall performance and reliability. Furthermore, through the front power assembly, the towing form can be arbitrarily combined, and different driven components are not limited to the existing few forms.

[0008] The technical solution adopted by this invention to solve its technical problem is:

[0009] An assembled electric pull rod assembly includes an electric pull rod and a detachable assembly component mounted at the rear of the electric pull rod. The electric pull rod includes multiple telescopic rod sections, a pull rod handle mounted on the multiple telescopic rod sections, a power source located at the bottom of the multiple telescopic rod sections, an assembly base located below the multiple telescopic rod sections, and a drive wheel body driven by the power source located below the assembly base. The assembly component includes an assembly head, a functional component located behind the assembly head, and a driven wheel body mounted below the functional component. The assembly base and the assembly head form a detachable connection, and the connection is fixed by bolts screwed in.

[0010] Preferably, the mounting base has a fixing hole, the mounting head has a connecting hole that matches the fixing hole, the mounting base is equipped with a bolt that can pass through the connecting hole and the fixing hole in sequence, and the shape of the mounting head matches the shape of the mounting base.

[0011] Preferably, the mounting base is provided with a slot for inserting an assembly head, the assembly head is inserted into the slot to form a retaining mechanism, the fixing screw hole passes through the slot, and the connecting hole is provided at the part of the assembly head inserted into the slot and forms an upper and lower connection with the fixing screw hole.

[0012] Preferably, the functional component is one of the following: skateboard, suitcase, flatbed cart, trailer, bicycle seat, trailer frame, tricycle seat, and frog-style board.

[0013] Preferably, the assembly head and the functional components are connected by a rotatable connection or a telescopic connection.

[0014] Preferably, the drive wheel is provided with a brake assembly, which includes a brake pad disposed above the drive wheel and a brake motor disposed in the mounting base for driving the brake pad to move up and down. The lever handle is provided with a brake control mechanism for driving the brake lever.

[0015] Another technical problem to be solved by the present invention is to provide an assembly method for a modular electric pull rod assembly, comprising the following steps:

[0016] Connect the multiple telescopic rod sections sequentially, and ensure that the connection between each section is secure.

[0017] Install the handle onto the multi-section telescopic pole and ensure it is securely fixed.

[0018] Install the power supply at the bottom of the multi-section telescopic pole and ensure that the power connection is secure.

[0019] Install the mounting base under the multi-section telescopic rod and ensure that it is tightly connected;

[0020] Install the drive wheel under the mounting base and ensure that it can rotate normally;

[0021] Install the assembly head onto the assembly base, ensuring that the two can be fixedly connected by bolts. The bolts pass through the connecting holes and the fixing holes in sequence and are tightened.

[0022] The functional components are installed at the rear of the assembly head and connected to the assembly head via a rotatable or telescopic connection to ensure the normal operation of the functional components.

[0023] The brake assembly is installed on the drive wheel, and the brake motor drives the brake pads to move up and down. At the same time, the brake control mechanism is installed on the lever handle.

[0024] After assembly, check the stability of each connection point, test the functions of the electric pull rod assembly, and ensure that each part works normally and meets the design requirements.

[0025] The beneficial effects of this invention are:

[0026] This solution ensures a secure connection between the driven component and the drive rod by designing mounting slots and fixing holes, combined with bolt connections, preventing loosening or detachment during use. The design also incorporates a structure where bolts sequentially pass through and connect the connecting and fixing holes, simplifying the assembly process and improving production and maintenance efficiency. This structure makes connecting components more convenient, facilitating adjustment and disassembly, while reducing complex connection structures and improving assembly accuracy.

[0027] This product structure offers a towing option, allowing the front power unit to drag any driven component that needs to be towed. Non-electric products can be connected to the front power unit via a connecting structure to form an electric product. This means that users, with just the power unit, can freely combine any desired products—one or multiple—significantly reducing operating costs. Attached Figure Description

[0028] Figure 1 is a schematic diagram of the electric pull rod structure of an assembled electric pull rod assembly according to the present invention;

[0029] Figure 2 is a schematic diagram of the brake assembly structure of an assembled electric pull rod assembly according to the present invention;

[0030] Figure 3 is a schematic diagram of the combination of an electric pull rod and a scooter;

[0031] Figure 4 is a schematic diagram of the combination of electric pull rod and folding scooter;

[0032] Figure 5 is a schematic diagram of the assembly head of an assembled electric pull rod assembly according to the present invention;

[0033] Figure 6 is a schematic diagram of the electric pull rod and the folding combination of the suitcase;

[0034] Figure 7 is a schematic diagram of the combination of the electric pull rod and the telescopic suitcase;

[0035] Figure 8 is a schematic diagram of the combination of an electric pull rod and a scooter with a seat.

[0036] Figure 9 is a schematic diagram of the combination of electric pull rod and bicycle handle;

[0037] Figure 10 is a schematic diagram of the combination of the electric pull rod and the trailer frame;

[0038] Figure 11 is a schematic diagram of the combination of the electric pull rod and the tricycle platform;

[0039] Figure 12 is a schematic diagram of the combination of the electric pull rod and the tricycle seat;

[0040] Figure 13 is a schematic diagram of the combination of electric pull rod and flat plate frame;

[0041] Figure 14 is a schematic diagram of the combination of the electric pull rod and the frog-type board;

[0042] Figure 15 is a structural schematic diagram of the overlapping assembly head of an assembled electric pull rod assembly according to the present invention.

[0043] Specific implementation methods

[0044] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0045] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] Example 1

[0048] Referring to Figures 1-5, an assembled electric pull rod assembly includes an electric pull rod 1 and a detachable assembly assembly 2 installed behind the electric pull rod 1. The electric pull rod 1 includes a multi-section telescopic rod 11, a pull rod handle 12 installed on the multi-section telescopic rod 11, a power source 13 located at the bottom of the multi-section telescopic rod 11, an assembly seat 14 located below the multi-section telescopic rod 11, and a power wheel 15 driven by the power source 13 located below the assembly seat 14. The assembly assembly 2 includes an assembly head 21, a functional component 22 located behind the assembly head 21, and a driven wheel 23 installed below the functional component 22. The assembly seat 14 and the assembly head 21 form a detachable connection, and are fixed by bolts 3 screwed in at the connection.

[0049] Because the mounting base 14 and the mounting head 21 are detachably connected and secured by bolts 3, users can easily disassemble the assembly of the electric pull rod 1 component for maintenance, inspection, or replacement of parts. This design improves the maintainability of the equipment, reduces downtime, and increases production efficiency. The disassembly method of the assembly component 2 and the electric pull rod 1 makes the entire system highly modular, allowing users to replace or upgrade functional components 22 as needed, such as the drive wheel 15 and the driven wheel 23. This flexible design enables the electric pull rod 1 component to adapt to different application requirements, providing greater adaptability and scalability. By integrating the power supply 13, the pull rod handle 12, and the multi-section telescopic rod 11 into a compact structure, and using bolts 3 to connect and secure the mounting base 14 and the mounting head 21, the overall structure is more robust, reducing the risk of component loosening or deformation and ensuring reliability and stability after long-term use.

[0050] The mounting base 14 has a fixing hole 141, and the mounting head 21 has a connecting hole 211 that mates with the fixing hole 141. The mounting base 14 is equipped with a bolt 3 that can pass through the connecting hole 211 and the fixing hole 141 in sequence. The shape of the mounting head 21 matches that of the mounting base 14.

[0051] By providing mating holes on the mounting base 14 and the mounting head 21, and connecting them with bolts 3, quick and easy assembly can be achieved. The design of the mating holes and bolt 3 connection reduces the complexity and time required for assembly, improving production efficiency. The precise fit between the fixing hole 141 and the connecting hole 211 makes the connection between the mounting base 14 and the mounting head 21 more secure. The bolts 3, passing through the connecting hole 211 and the fixing hole 141, provide strong fixation, preventing loosening or misalignment of the assembled parts during use and ensuring long-term stable operation of the system. The shape matching between the mounting head 21 and the mounting base 14 ensures a tight fit, effectively transmitting mechanical force and avoiding instability or uneven stress caused by shape mismatch. This design also facilitates future upgrades and maintenance, as the good shape matching ensures precise alignment when replacing components.

[0052] The mounting base 14 is provided with a slot 142 into which the mounting head 21 can be inserted. The mounting head 21 is inserted into the slot 142 to form a holding. The fixing hole 141 passes through the position of the slot 142. The connecting hole 211 is provided at the part of the mounting head 21 that is inserted into the slot 142 and forms an upper and lower connection with the fixing hole 141.

[0053] By providing a slot 142 on the mounting base 14 and inserting the assembly head 21 to form a locking mechanism, quick docking and fixation can be achieved. This design simplifies the assembly process, reduces reliance on tools, and improves operational efficiency. Simultaneously, the slot 142 and locking structure ensure stable fixation of the assembly head 21 during initial assembly; the fixing hole 141 penetrates the slot 142, and combined with the upper and lower docking design of the connecting hole 211, makes the connection between the assembly head 21 and the mounting base 14 tighter and more stable. The bolt 3 not only prevents loosening of components but also effectively distributes stress, enhancing the overall structural stability and preventing loosening or failure during use; the slot 142 and locking design enhance the mechanical locking force between the assembly head 21 and the mounting base 14, reducing the risk of loosening caused by vibration and external forces. Furthermore, the docking of the fixing hole 141 and the connecting hole 211 increases the overall durability of the structure, enabling the system to maintain high seismic resistance and stability during long-term use, extending the product's service life.

[0054] The functional component 22 is one of the following: a skateboard, a suitcase, a flatbed cart, a trailer, a bicycle seat, a trailer frame, a tricycle seat, or a frog-style board. In this embodiment, a skateboard structure is adopted. The skateboard structure is either a non-foldable skateboard or a foldable skateboard. The assembly head 21 and the functional component 22 are rotatably connected.

[0055] The power wheel 15 is provided with a brake assembly 16, which includes a brake pad 161 disposed above the power wheel 15 and a brake motor 162 disposed in the mounting base 14 for driving the brake pad 161 to move up and down. The lever handle 12 is provided with a brake control mechanism for driving the brake motor.

[0056] By incorporating a brake control mechanism on the lever handle 12, users can directly operate the braking system, easily moving the brake pads 161 up and down for precise braking control. This design enhances the braking system's response speed and handling, enabling users to quickly activate the brakes when needed, thus improving safety.

[0057] The brake motor 162 allows the up-and-down movement of the brake pads 161 to be electrically driven, enabling automated adjustment. Compared to traditional manual braking systems, electric drive provides a smoother and more reliable braking effect, while reducing the need for manual force and improving ease of use and comfort.

[0058] The brake control mechanism is designed to closely coordinate brake operation with the brake pads 161 of the drive wheel 15. Through an electric control system, inconsistent braking performance caused by improper or erroneous operation is avoided. Especially in complex environments, this ensures a stable and rapid braking system response, increasing system safety and reducing the risk of accidents.

[0059] An assembly method for a modular electric pull rod assembly includes the following steps:

[0060] Connect the multiple telescopic rods 11 in sequence, and ensure that the connection between each telescopic rod is firm;

[0061] Install the handle 12 onto the multi-section telescopic rod 11 and ensure it is securely fixed.

[0062] Install the power supply 13 at the bottom of the multi-section telescopic rod 11 and ensure that the power connection is secure.

[0063] Install the mounting base 14 below the multi-section telescopic rod 11 and ensure that they are tightly connected;

[0064] Install the power wheel 15 under the mounting base 14 and ensure that it can rotate normally;

[0065] Install the assembly head 21 onto the assembly base 14, ensuring that the two can be fixedly connected by bolts 3. Bolts 3 pass through the connecting hole 211 and the fixing hole 141 in sequence and are tightened.

[0066] The functional component 22 is installed behind the assembly head 21 and connected to the assembly head 21 by a rotatable or telescopic connection to ensure the normal operation of the functional component 22.

[0067] The brake assembly 16 is installed on the drive wheel 15, and the brake motor 162 drives the brake pads 161 to move up and down. At the same time, the brake control mechanism is installed on the lever handle 12.

[0068] After assembly, check the stability of each connection and test the functions of the electric pull rod 1 assembly to ensure that each part works normally and meets the design requirements.

[0069] Example 2

[0070] Referring to Figures 6-7, the only difference between this embodiment and Embodiment 1 is that the functional component 22 is a suitcase, and the suitcase and the assembly head 21 are connected by a rotating connection or a telescopic connection, which increases the storage capacity of the suitcase structure. The suitcase is provided with a handle and a receiving slot for accommodating the assembly head 21.

[0071] The detachable assembly head, combined with the foldable suitcase, allows for separate use of both, offering greater flexibility.

[0072] Example 2

[0073] Referring to Figures 8-9, the only difference between this embodiment and Embodiment 1 is that the functional component 22 is a bicycle handlebar. The bicycle handlebar and the mounting head 21 are integrally molded, increasing the stability and durability of the overall structure. A bicycle seat 221 is provided on the mounting component 2, providing a comfortable sitting posture. The bicycle handlebar consists of two parts, one of which is connected to the mounting head 21, and the other is connected to the driven wheel 23, realizing power transmission and adjustment functions.

[0074] The one-piece molding design enhances structural strength; the bicycle seat 221 improves comfort and is suitable for applications requiring riding functionality.

[0075] Example 3

[0076] Referring to Figure 10, the difference between this embodiment and Embodiment 1 is only that the functional component 22 is a trailer frame, and telescopic frames 222 are provided on both sides of the functional component 22. One end of the telescopic frame 222 is fixed to the front rod of the trailer frame, and the other end is fixed to the rear rod of the trailer frame. A telescopic net is fitted on the telescopic frame 222, which can expand or shrink its volume as needed to facilitate the transportation of goods. The trailer frame is connected to the assembly head 21 through an integrally formed connection, and the power source 13 realizes the telescopic function of the pull rod by driving the power wheel 15.

[0077] Suitable for cargo transportation and multi-functional applications, the telescopic net provides additional storage space; the telescopic frame 222 allows for adjustment of the trailer frame size according to actual needs, offering high flexibility.

[0078] Example 4

[0079] Referring to Figure 11, the only difference between this embodiment and Embodiment 1 is that the functional component 22 is a three-wheeled vehicle seat. The three-wheeled vehicle seat and the assembly head 21 are rotatably connected, allowing the seat angle to be freely adjusted. A rear seat 223 is provided on the functional component 22 to provide support for the passenger. Driven wheels 23 are located on both sides of the three-wheeled vehicle seat to achieve better stability and power transmission.

[0080] It offers a comfortable riding experience and is suitable for vehicles such as electric tricycles; the 223 rear seat design is suitable for multiple users and provides better support and stability.

[0081] Example 5

[0082] Referring to Figure 12, the only difference between this embodiment and Embodiment 1 is that the functional component 22 is a three-wheeled support plate. The three-wheeled support plate and the assembly head 21 are rotatably connected for easy angle adjustment. A rear seat 224 is provided on the functional component 22 and is fixed to the body of the three-wheeled support plate. Driven wheels 23 are located on both sides of the three-wheeled support plate, enhancing its stability and maneuverability.

[0083] Suitable for applications requiring stable support, such as three-wheeled pallet trucks or recreational equipment; simple design, highly flexible and practical.

[0084] Example 6

[0085] Referring to Figure 13, in this embodiment, the functional component 22 is a flat frame. The functional component 22 and the assembly head 21 are integrally connected, enhancing the stability of the overall structure. Driven wheels 23 are located on both sides of the flat frame, providing uniform load support.

[0086] Suitable for applications requiring broad load support, such as material handling equipment; the one-piece molded connection improves the durability and stability of the components.

[0087] Example 7

[0088] Referring to Figure 14, the only difference between this embodiment and Embodiment 1 is that the functional component 22 is a frog-shaped plate. The functional component 22 and the assembly head 21 are integrally molded to improve the stability and durability of the structure. The driven wheel 23 is located at the bottom of the frog-shaped plate and is a universal wheel. The frog-shaped plate consists of two frog plates 225 and a rotating shaft 226. The two frog plates 225 can be movably separated or joined together, achieving flexible directional adjustment. This structure is suitable for applications requiring flexible movement.

[0089] The omnidirectional wheel design enhances maneuverability and is suitable for mobile devices in dynamic environments; the unibody design strengthens the overall strength of the components and makes them more durable.

[0090] Example 8

[0091] Referring to Figure 15, the difference between this embodiment and embodiment 1 is that one end of the bolt 3 is screwed into the connection hole 211 for fixation, and the other end of the bolt 3 passes through the fixing hole 141, with a nut screwed into the part that passes through the fixing hole 141.

[0092] The design of bolt 3, with one end screwed into the connecting hole 211 for fixation and the other end passing through the fixing hole 141 and screwed into the nut, effectively achieves bidirectional fixation. This structure ensures that bolt 3 firmly maintains its position between the connected parts, preventing loosening due to vibration, external force, or use, and improving the long-term stability and firmness of the connection.

[0093] Screwing a nut into the bolt 3 portion that passes through the fixing hole 141 further ensures that the bolt 3 is not prone to loosening. The nut provides additional anti-loosening effect by applying extra tightening force to the bolt 3. This double-locking method (the fit between the bolt 3 and the nut) effectively avoids loosening problems caused by vibration or load changes, thereby improving the safety and reliability of the entire connection structure.

[0094] Since the other end of bolt 3 is screwed into a nut, bolt 3 can be easily removed simply by loosening the nut. This simplifies maintenance and component replacement. Users can quickly disassemble or replace damaged components without complicated tools or procedures, thereby reducing maintenance costs and time and improving system maintainability and ease of use.

[0095] The above embodiments of the present invention are not intended to limit the scope of protection of the present invention. The implementation of the present invention is not limited thereto. All other modifications, substitutions or alterations made to the above structure of the present invention based on the above content of the present invention, in accordance with ordinary technical knowledge and common practice in the field, without departing from the basic technical idea of ​​the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A prefabricated electric pull rod assembly, characterized in that, The device includes an electric pull rod and a detachable assembly mounted at the rear of the electric pull rod. The electric pull rod includes a multi-section telescopic rod, a pull rod handle mounted on the multi-section telescopic rod, a power source located at the bottom of the multi-section telescopic rod, an assembly base located below the multi-section telescopic rod, and a drive wheel located below the assembly base and driven by the power source. The assembly assembly includes an assembly head, a functional component located behind the assembly head, and a driven wheel located below the functional component. The assembly base and the assembly head are detachably connected and secured with bolts at the connection point.

2. The assembled electric pull rod assembly according to claim 1, characterized in that, The mounting base has a fixing hole, and the mounting head has a connecting hole that matches the fixing hole. The mounting base is equipped with a bolt that can pass through the connecting hole and the fixing hole in sequence. The shape of the mounting head matches that of the mounting base.

3. The assembled electric pull rod assembly according to claim 1, characterized in that, The mounting base is provided with a slot for the assembly head to be inserted. The assembly head is inserted into the slot to form a retaining mechanism. The fixing screw hole passes through the slot. The connecting hole is located at the part of the assembly head inserted into the slot and forms an upper and lower connection with the fixing screw hole.

4. The assembled electric pull rod assembly according to claim 1, characterized in that, The functional components include one of the following: skateboard, suitcase, flatbed cart, trailer, bicycle seat, trailer frame, tricycle seat, and frog-style board.

5. The assembled electric pull rod assembly according to claim 1, characterized in that, The assembly head and the functional components are connected by a rotating or telescopic connection.

6. The assembled electric pull rod assembly according to claim 1, characterized in that, A brake assembly is provided on the drive wheel body. The brake assembly includes a brake pad disposed above the drive wheel body and a brake motor disposed in the mounting base for driving the brake pad to move up and down. A brake control mechanism for driving the brake motor is provided on the lever handle.

7. A method for assembling a prefabricated electric pull rod assembly as described in any one of claims 1-6, characterized in that, Includes the following steps: Connect the multiple telescopic rod sections sequentially, and ensure that the connection between each section is secure. Install the handle onto the multi-section telescopic pole and ensure it is securely fixed. Install the power supply at the bottom of the multi-section telescopic pole and ensure that the power connection is secure. Install the mounting base under the multi-section telescopic rod and ensure that it is tightly connected; Install the drive wheel under the mounting base and ensure that it can rotate normally; Install the assembly head onto the assembly base, ensuring that the two can be fixedly connected by bolts. The bolts pass through the connecting holes and the fixing holes in sequence and are tightened. The functional components are installed at the rear of the assembly head and connected to the assembly head via a rotatable or telescopic connection to ensure the normal operation of the functional components. The brake assembly is installed on the drive wheel, and the brake motor drives the brake pads to move up and down. At the same time, the brake control mechanism is installed on the lever handle. After assembly, check the stability of each connection point, test the functions of the electric pull rod assembly, and ensure that each part works normally and meets the design requirements.