Portable self-balancing carrier

Abstract

The invention relates to the technical field of carrying vehicles, and discloses a portable self-balancing carrying vehicle which comprises a carrying vehicle body and wheels and further comprises a base fixed to the carrying vehicle body, and a balancing assembly is movably arranged in the base; the balance assembly comprises a balance seat, a supporting roller and a buckle sliding plate, the supporting roller is rotationally installed on the inner wall of the base, and the buckle sliding plate is used for limiting the balance seat; through the arrangement of the whole balancing assembly, when a vehicle moves to a ramp, the balancing weight is influenced by the gravity of the balancing weight and is always perpendicular to the ground plane, so that the storage groove in the balancing seat is always parallel to the ground plane, and the gravity center of the logistics box on the storage groove does not deviate and is always vertically downward; and in the balancing process, automatic balancing is achieved through the gravity action of the balancing weight, other auxiliary equipment is not needed, and the vehicle can be automatically leveled more conveniently and rapidly.

Description

Technical Field

[0001] This invention relates to the field of transport vehicle technology, specifically a convenient self-balancing transport vehicle. Background Technology

[0002] With the rapid development of intelligent manufacturing and logistics industries, the demand for material handling in workshops, warehouses, and other settings is increasing daily. Portable material handling vehicles, especially those equipped with standardized logistics boxes, have been widely adopted due to their flexibility and efficiency.

[0003] However, existing material handling vehicles have significant technical shortcomings when operating on uneven ground, especially on slopes (such as ramps on truck unloading platforms or slightly sloping workshop floors). Because the vehicle body tilts with the ground gradient, its carrying platform (or the directly placed logistics boxes) also tilts. This shifts the center of gravity of the logistics boxes, greatly increasing the risk of items slipping out or even the entire logistics box tipping over, impacting operational efficiency and posing a safety hazard. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a convenient self-balancing transport vehicle that possesses the advantage of being able to self-balance.

[0005] To achieve the aforementioned goal of higher installation stability, the present invention provides the following technical solution: The vehicle includes a transport vehicle body and wheels, as well as a base fixed to the transport vehicle body, and a balancing component is movably installed inside the base. The balancing assembly includes a balancing seat, a support roller, and a snap-on sliding plate. The support roller is rotatably mounted on the inner wall of the base, and the snap-on sliding plate is used to limit the position of the balancing seat. The upper surface of the balance seat is provided with a storage groove, and a counterweight is fixed to its lower surface. The counterweight extends through the base to the outside. The interior of the balance seat is hollow, and the overall weight of the counterweight is greater than the overall weight of the balance seat.

[0006] Preferably, both the base and the balance seat are semi-circular in shape. The arc-shaped end face inside the base has at least two support grooves. The support roller is located in the support grooves and abuts against the balance seat, supporting the balance seat and reducing friction between it and the base. The two end faces inside the base have sliding grooves. The middle part of the base has an arc-shaped hole, and the counterweight is located in the arc-shaped hole and slidably connected to it.

[0007] Preferably, the two end faces of the balance seat protrude outward to form an extension ridge, and the extension ridge is provided with a plurality of slots, and the extension ridge is embedded in the inner wall of the base.

[0008] Preferably, the snap-on slide plate slides within the slide groove, and one side end face of the snap-on slide plate is provided with a beveled protrusion, wherein the beveled protrusion cooperates with the slot to restrict and fix the balance seat.

[0009] Preferably, the bottom of the base is further fixed with a downwardly extending auxiliary block, and two auxiliary support groups are movably arranged inside the auxiliary block; The auxiliary support assembly includes an auxiliary rod, an auxiliary wheel, and a transmission wheel. The auxiliary rod slides within the auxiliary block, and the transmission wheel is located inside the base.

[0010] Preferably, the auxiliary wheel is movably mounted on one end of the auxiliary rod, and a protrusion is installed on the side end face of the auxiliary rod near the base. The transmission wheel is provided with two sets of cooperating wheel sets, one of which cooperates with the bottom of the balance seat, and the other wheel set cooperates with the protrusion.

[0011] Preferably, the transport vehicle body further includes a base frame and a push frame, and the wheels further include steering wheels and traveling wheels, wherein the traveling wheels are mounted on the base frame via wheel linkage rods and support frames on the wheel linkage rods, the steering wheels are mounted on the push frame, the base is also fixedly mounted on the base frame, and a brake wheel and a brake assembly are provided on the wheel linkage rods; The braking assembly includes a brake lever and a brake cable. The brake cable extends through the base frame into the push frame, and each turning node of the brake cable is equipped with a guide wheel.

[0012] Preferably, the brake lever is located on the outer periphery of the brake wheel, a friction pad is fixed to the inner end face of the brake lever, one end of the brake lever is fixedly connected to the support frame of the wheel linkage rod, and the other end is fixedly connected to the brake cable, and the brake lever is elastic.

[0013] Preferably, a locking block is fixed on the side of the latching slide away from the base, and one end face of the bottom of the locking block is set as an angle; The brake cable has a wedge fixed in the middle. The wedge is located at the buckle slide. The upper end face of the wedge is inclined and abuts against the buckle.

[0014] Preferably, a rotating handle is rotatably mounted on the middle part of the push frame, and lead screws are fixed on both sides of the rotating handle. The lead screws extend into the push frame, and nuts are threaded onto the lead screws. The nuts are slidably connected to the push frame, and one end of the brake cable is fixed to the nut.

[0015] Compared with the prior art, the present invention provides a convenient self-balancing transport vehicle, which has the following beneficial effects: 1. This portable self-balancing transport vehicle, through the setting of the entire balancing component, ensures that when the vehicle moves onto a ramp, the counterweight is always perpendicular to the ground plane due to its own weight. Therefore, the storage slot on the balancing seat will always be parallel to the ground plane, so that the center of gravity of the logistics box on the storage slot will not shift and will always be vertically downward, thereby reducing the risk of the logistics box tipping over. Moreover, the balancing process is automatically balanced by the gravity of the counterweight, so no other auxiliary equipment is required, making it more convenient and faster for the vehicle to automatically level itself.

[0016] 2. This portable self-balancing transport vehicle, through the setting of the auxiliary support group, can change its own center of gravity after the balance seat slides. By extending the auxiliary rod, it can support the vehicle after the center of gravity changes, so that the vehicle will not tilt or tip over due to the change in the center of gravity.

[0017] 3. This portable self-balancing transport vehicle, with its rotating handle and brake assembly, allows users to easily control and adjust the level of the balance seat, ensuring that the storage compartment remains parallel to the ground whether the vehicle is on a slope or flat ground. This effectively prevents the risk of the logistics boxes on the vehicle tipping over due to changes in the vehicle's angle. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the base structure of the present invention; Figure 5 This is a schematic diagram of a half-section of the vehicle body bracket structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is a schematic diagram of the half-section structure of the present invention; Figure 8 This is a schematic diagram of the half-section structure of the present invention; Figure 9 This is a schematic diagram of the balance seat structure of the present invention; Figure 10 This is a schematic diagram of the snap-on sliding plate structure of the present invention; Figure 11 This is a schematic diagram of the half-section structure of the rotating handle of the present invention; Figure 12 This is a three-dimensional structural diagram of the rotating handle of the present invention.

[0019] In the diagram: 10. Transport vehicle body; 101. Base frame; 102. Push frame; 11. Steering wheel; 12. Traveling wheel; 13. Wheel linkage rod; 131. Brake wheel; 20. Base; 201. Slide groove; 202. Support groove; 203. Arc hole; 21. Balance seat; 211. Storage groove; 212. Counterweight block; 213. Extension ridge; 2131. Slot; 22. Support roller; 23. Snap-on slide plate; 231. Locking block; 232. Angled protrusion; 24. Auxiliary block; 30. Brake lever; 301. Friction plate; 31. Brake pull rope; 32. Angled block; 40. Auxiliary rod; 401. Protrusion block; 41. Auxiliary wheel; 42. Transmission wheel; 50. Rotary handle; 51. Lead screw; 52. Nut. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1-12 As shown, the device includes a transport vehicle body 10 and wheels, as well as a base 20 fixed to the transport vehicle body 10. A balancing assembly is movably installed inside the base 20. The balancing assembly includes a balance seat 21, a support roller 22, and a snap-on sliding plate 23. The support roller 22 is rotatably mounted on the inner wall of the base 20. The snap-on sliding plate 23 is used to limit the position of the balance seat 21. A storage slot 211 is provided on the upper surface of the balance seat 21, and a counterweight 212 is fixed on its lower surface. The counterweight 212 penetrates through the base 20 to the outside. The interior of the balance seat 21 is hollow. The overall weight of the counterweight 212 is much greater than the overall weight of the balance seat 21, meaning the balance seat 21 uses… The counterweight 212 is made of lightweight plastic or other materials, while the counterweight 212 is made of metal (iron block) or other materials. This ensures that the center of gravity of the entire balance seat 21 is on the counterweight 212. This not only lowers the overall center of gravity of the vehicle and makes the vehicle more stable, but also makes the balance seat 21 more likely to slide along with the counterweight 212. When the vehicle is under safe full load, the center of gravity of the object and the entire balance seat 21 is still lower than the storage compartment 211, and the balance seat 21 can be used normally. When the object on the vehicle exceeds the full load, the center of gravity is higher than the storage compartment 211, and the balance seat 21 cannot be used normally. This is a dangerous overload state, and only the normal push function can be used.

[0022] Both the base 20 and the balance seat 21 are semi-circular, allowing for smoother sliding. The arc-shaped end face inside the base 20 has at least two support grooves 202, with a support roller 22 located within each groove. The support roller 22 abuts against the balance seat 21, supporting it and reducing friction between the balance seat 21 and the base 20. Sliding grooves 201 are provided on both sides of the base 20's interior. An arc-shaped hole 203 is provided in the middle of the base 20, with a counterweight 212 located within and slidably connected to it. This design restricts the direction of movement of the counterweight 212 and prevents the balance seat 21 from detaching. The balance seat 21 itself is also inverted T-shaped, further preventing the counterweight 212 from detaching. Both sides of the balance seat 21 protrude outwards to form extending ridges 213, with sliding grooves inside the base 20 matching these ridges to limit balance. The sliding direction of the seat 21 is such that the extension rib 213 is provided with several slots 2131. The extension rib 213 is embedded in the inner wall of the base 20. The snap-on slide plate 23 slides in the slide groove 201. One side end face of the snap-on slide plate 23 is provided with a sloping protrusion 232. The sloping protrusion 232 cooperates with the slots 2131 to limit and fix the balance seat 21. Through the setting of the entire balance assembly, when the vehicle moves to the ramp, the counterweight 212 is always perpendicular to the ground plane due to its own weight. Therefore, the storage slot 211 on the balance seat 21 will always be parallel to the ground plane, so that the center of gravity of the logistics box on the storage slot 211 will not shift and will always be vertically downward, thereby reducing the risk of the logistics box tipping over. Moreover, the balancing process is automatically balanced by the gravity of the counterweight 212, so no other auxiliary equipment is needed, making it easier and faster for the vehicle to automatically level itself.

[0023] The bottom of the base 20 is also fixed with a downwardly extending auxiliary block 24. Two auxiliary support groups are movably installed within the auxiliary block 24. Each auxiliary support group includes an auxiliary rod 40, an auxiliary wheel 41, and a transmission wheel 42. The auxiliary rod 40 slides within the auxiliary block 24, and the transmission wheel 42 is located inside the base 20. The auxiliary wheel 41 is movably installed at one end of the auxiliary rod 40, and it is on the same horizontal plane as the bottom of the steering wheel 11 and the traveling wheel 12. A protrusion 401 is installed on the side of the auxiliary rod 40 closest to the base 20. The transmission wheel 42 has two sets of... The wheelsets are designed to work together, with one wheel set engaging with the bottom of the balance seat 21 and the other wheel set engaging with the protrusion 401. The wheelsets can be either gears or friction wheels, preferably friction wheels. The two sets of transmission wheels 42 allow the balance seat 21 to slide in the same direction as the auxiliary rod 40. The auxiliary support group allows the balance seat 21 to change its center of gravity after sliding. The extended auxiliary rod 40 supports the vehicle after the center of gravity has changed, preventing the vehicle from tilting or tipping over due to the change in center of gravity.

[0024] The transport vehicle body 10 also includes a base frame 101 and a push frame 102. The wheels include steering wheels 11 and traveling wheels 12. The traveling wheels 12 are mounted on the base frame 101 via a wheel linkage 13 and a support frame on the wheel linkage 13. Specifically, the traveling wheels 12 are fixedly mounted on the wheel linkage 13, which is rotatably mounted on the support frame. The support frame is fixedly mounted on the base frame 101, primarily for vehicle support and movement. The steering wheels 11 are movably mounted on the push frame 102, allowing for both rotation and overall rotation, mainly for vehicle steering and movement. The base 20 is also fixedly mounted on the base frame 101. The linkage rod 13 is equipped with a brake wheel 131 and a brake assembly. The brake wheel 131 is fixedly installed on the wheel linkage rod 13. The brake assembly includes a brake lever 30 and a brake cable 31. One end of the brake lever 30 is fixed on the support frame, and the other part is suspended on the outer periphery of the brake wheel 131. The brake cable 31 extends through the base frame 101 into the push frame 102. Each steering node of the brake cable 31 is equipped with a guide wheel. The guide wheel is rotatably installed on the entire frame, and the brake cable 31 is wound around the guide wheel to facilitate the sliding and steering of the brake cable 31 and reduce the friction generated by the sliding of the brake cable 31.

[0025] The brake lever 30 is located on the outer periphery of the brake wheel 131. A friction pad 301 is fixed to the inner end face of the brake lever 30. One end of the brake lever 30 is fixed to the support frame of the wheel linkage rod 13, and the other end is fixed to the brake cable 31. The brake lever 30 is elastic. When a pulling force is applied to the brake lever 30, it deforms, thereby causing the friction pad 301 to rub against the brake wheel 131, thus stopping the vehicle.

[0026] A locking block 231 is fixed on the side of the locking slide 23 away from the base 20. One end face of the bottom of the locking block 231 is set as an inclined surface. An inclined block 32 is fixed in the middle part of the brake pull rope 31. The inclined block 32 is located at the locking slide 23. The upper end face of the inclined block 32 is set as an inclined surface and abuts against the locking block 231. The interaction between the two inclined surfaces will produce a displacement in a relatively vertical direction, thereby controlling the locking slide 23 to limit the balance seat 21.

[0027] The travel required for the brake cable 31 to move the brake lever 30 to a complete stop is greater than the travel required for the inclined block 32 to move the latching slide 23 to disengage from the limiting balance seat 21. In other words, during the movement of the brake cable 31, the latching slide 23 will disengage from the limiting balance seat 21 first, and only then will the brake lever 30 stop the vehicle. A rotating handle 50 is rotatably mounted on the middle part of the push frame 102. Lead screws 51 are fixed to both sides of the rotating handle 50, extending into the push frame 102. Nuts 52 are threaded onto the lead screws 51, and the nuts 52 are slidably connected to the push frame 102. One end of the brake cable 31 is fixed to the nut 52. The threads on the nut 52 have a large spacing, allowing the nut 52 to move a greater distance with fewer rotations of the rotating handle 50. Furthermore, the elastic force of the brake lever 30 allows the nut 52 to slide directly, preventing self-locking between the lead screw 51 and the nut 52. The rotating handle 50 and brake assembly allow users to easily control the level of the vehicle's balance seat 21, ensuring that the storage compartment 211 remains parallel to the ground plane regardless of whether the vehicle is on a slope or flat ground. This effectively prevents the logistics box on the vehicle from tipping over due to changes in the vehicle's angle.

[0028] Working principle: A logistics box is placed on the storage slot 211 of the transport vehicle. When the transport vehicle moves onto the ramp, the counterweight 212, due to its own weight, remains perpendicular to the ground. Therefore, when the transport vehicle moves onto the ramp, the counterweight 212 tends to rotate the balance seat 21. At this time, the user needs to rotate the handle 50 to brake the vehicle. Rotating the handle 50 drives the screw 51 to slide the nuts 52 on both sides inward simultaneously, which pulls the brake cable 31, causing the brake lever 30 to deform. Through the friction plate 301, it contacts the brake wheel 131, thus keeping the vehicle stationary via the brake wheel linkage 13. However, during the movement of the brake cable 31, it also drives the inclined block 32. Through the inclined plane, the locking block 231 drives the locking slide plate 23 to move upward, causing the inclined protrusion 23 to... 2. Once disengaged from slot 2131, the balance seat 21 is no longer restricted. The counterweight block 212 can then automatically rotate the balance seat 21 under its own weight, keeping the surface of the storage slot 211 of the balance seat 21 parallel to the ground. The automatic balancing of the balance seat 21 prevents items on the transport vehicle from tipping over as the vehicle tilts on the ramp. After the balance seat 21 reaches balance, release the rotating handle 50 or rotate the rotating handle 50 in the opposite direction. The elastic force of the brake lever 30 will move the brake cable 31, causing the inclined block 32 to release the latching slide 23. This allows the inclined protrusion 232 to re-lock the slot 2131, restricting the balance seat 21 and preventing it from wobbling and causing items on the storage slot 211 to tip over, greatly increasing the stability of the transport vehicle.

[0029] When the transport vehicle is pushed downhill or pulled uphill, that is, when the balance seat 21 slides to the side away from the push frame 102, the sliding of the balance seat 21 will drive the auxiliary rod 40 and the auxiliary wheel 41 to extend to the side away from the push frame 102 through the transmission wheel 42 and the protrusion 401. This is used to support the vehicle as a whole and avoid the risk of the vehicle tipping to the side away from the push frame 102 due to the shift of the vehicle's center of gravity caused by the sliding of the balance seat 21.

[0030] When the transport vehicle moves to a flat surface, turning the rotating handle 50 again will cause the snap-on slide plate 23 to disengage from the restraining balance seat 21. Under the gravity of the counterweight 212, the balance seat 21 will automatically slide back to a parallel plane. Then, releasing the rotating handle 50 will cause the snap-on slide plate 23 to restrain the balance seat 21 again. At the same time, the sliding of the balance seat 21 will also drive the auxiliary rod 40 to retract and reset, reducing its footprint.

[0031] When the vehicle needs to brake, the handle 50 can be rotated while the balance seat 21 is automatically leveling. This will cause the friction pad 301 on the brake lever 30 to come into contact with the brake wheel 131, thus braking the vehicle.

[0032] In summary, this portable self-balancing transport vehicle, through the design of the entire balancing assembly, ensures that when the vehicle moves onto a ramp, the counterweight 212, under its own weight, remains perpendicular to the ground. Therefore, the storage compartment 211 on the balancing seat 21 remains parallel to the ground, preventing the center of gravity of the logistics boxes on the storage compartment 211 from shifting and keeping them vertically downward. This reduces the risk of the logistics boxes tipping over. Furthermore, the balancing process is automatically achieved through the gravity of the counterweight 212, eliminating the need for other auxiliary equipment and making automatic leveling of the vehicle more convenient and faster. The auxiliary support group allows the balancing seat 21 to shift its center of gravity after sliding. An extended auxiliary rod 40 supports the vehicle after the shift, preventing it from tilting or tipping over. The rotating handle 50 and brake assembly allow users to easily control the vehicle and adjust the level of the balancing seat 21, ensuring that the storage compartment 211 remains parallel to the ground regardless of whether the vehicle is on a ramp or flat ground, effectively preventing the logistics boxes on the vehicle from tipping over due to changes in the vehicle's angle.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable self-balancing transport vehicle, comprising a transport vehicle body (10) and wheels, and a base (20) fixed to the transport vehicle body (10), characterized in that: The base (20) is equipped with a balancing component inside; The balancing assembly includes a balancing seat (21), a support roller (22), and a snap-on sliding plate (23). The support roller (22) is rotatably mounted on the inner wall of the base (20), and the snap-on sliding plate (23) is used to limit the balancing seat (21). The upper end face of the balance seat (21) is provided with a storage groove (211), and a counterweight (212) is fixed on its lower end face. The counterweight (212) passes through the base (20) to the outside. The interior of the balance seat (21) is hollow. The overall weight of the counterweight (212) is greater than the overall weight of the balance seat (21).

2. The portable self-balancing transport vehicle according to claim 1, characterized in that: Both the base (20) and the balance seat (21) are semi-arc-shaped. The arc-shaped end face inside the base (20) is provided with at least two support grooves (202). The support roller (22) is located in the support groove (202). The support roller (22) abuts against the balance seat (21) and supports the balance seat (21) to reduce the friction between it and the base (20). The two end faces inside the base (20) are provided with sliding grooves (201). The middle part of the base (20) is provided with an arc-shaped hole (203). The counterweight (212) is located in the arc-shaped hole (203) and is slidably connected to it.

3. A convenient self-balancing transport vehicle according to claim 2, characterized in that: The two ends of the balance seat (21) protrude outward to form an extension ridge (213), and the extension ridge (213) is provided with a number of slots (2131), and the extension ridge (213) is embedded in the inner wall of the base (20).

4. A convenient self-balancing transport vehicle according to claim 3, characterized in that: The snap-on slide plate (23) slides in the slide groove (201). One side end face of the snap-on slide plate (23) is provided with a beveled protrusion (232), wherein the beveled protrusion (232) is used to restrict and fix the balance seat (21) by cooperating with the slot (2131).

5. A portable self-balancing transport vehicle according to claim 1, characterized in that: The bottom of the base (20) is also fixed with a downwardly extending auxiliary block (24), and two auxiliary support groups are also movably arranged inside the auxiliary block (24); The auxiliary support assembly includes an auxiliary rod (40), an auxiliary wheel (41), and a transmission wheel (42). The auxiliary rod (40) slides within the auxiliary block (24), and the transmission wheel (42) is located inside the base (20).

6. A convenient self-balancing transport vehicle according to claim 5, characterized in that: The auxiliary wheel (41) is movably mounted on one end of the auxiliary rod (40). A protrusion (401) is installed on the side end face of the auxiliary rod (40) near the base (20). The transmission wheel (42) is provided with two sets of mutually cooperating wheel sets. One set of wheel sets cooperates with the bottom of the balance seat (21), and the other set of wheel sets cooperates with the protrusion (401).

7. A portable self-balancing transport vehicle according to claim 1, characterized in that: The transport vehicle body (10) also includes a base frame (101) and a push frame (102). The wheels also include a steering wheel (11) and a traveling wheel (12). The traveling wheel (12) is mounted on the base frame (101) via a wheel linkage rod (13) and a support frame on the wheel linkage rod (13). The steering wheel (11) is mounted on the push frame (102). The base (20) is also fixedly mounted on the base frame (101). A brake wheel (131) and a brake assembly are provided on the wheel linkage rod (13). The brake assembly includes a brake lever (30) and a brake cable (31), the brake cable (31) extending through the base frame (101) into the push frame (102), and each turning node of the brake cable (31) is provided with a guide wheel.

8. A convenient self-balancing transport vehicle according to claim 7, characterized in that: The brake lever (30) is on the outer periphery of the brake wheel (131). A friction plate (301) is fixed on the inner end face of the brake lever (30). One end of the brake lever (30) is fixedly connected to the support frame of the wheel linkage rod (13), and the other end is fixedly connected to the brake cable (31). The brake lever (30) is elastic.

9. A convenient self-balancing transport vehicle according to claim 7, characterized in that: The latching slide (23) is fixed with a latching block (231) on the side away from the base (20), and one end face of the bottom of the latching block (231) is set as an inclined surface; The brake cable (31) has a wedge (32) fixed in the middle. The wedge (32) is located at the buckle slide (23). The upper end face of the wedge (32) is set with a slope and abuts against the buckle (231).

10. A portable self-balancing transport vehicle according to claim 7, characterized in that: A rotating handle (50) is rotatably mounted on the middle part of the push frame (102). A lead screw (51) is fixed on both sides of the rotating handle (50). The lead screw (51) extends into the push frame (102). A nut (52) is threaded onto the lead screw (51). The nut (52) is slidably connected to the push frame (102). One end of the brake pull rope (31) is fixed to the nut (52).

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