Cart

Abstract

The utility model discloses a cart. The cart comprises a frame, the bearing frame is movably mounted on the frame through a first connecting piece; the bearing frame is provided with a first end and a second end, and the first end and the second end are located on the two sides of the first connecting piece in the horizontal direction. The limiting structure comprises a first traction rope, one end of the first traction rope is connected with the frame, and the other end of the first traction rope is connected with the first end of the bearing frame; when the second end is stressed, the first traction rope is tensioned between the frame and the first end of the bearing frame so as to limit the bearing frame from turning over. According to the scheme, the stability and safety of the cart in the using process are improved, the damping effect is improved, and the riding comfort is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to children's articles technical field, especially push car. BACKGROUND

[0002] In the prior art, the bearing frame (such as seat) is directly fixed on the frame, and there is no independent limiting structure, and this rigid connection can cause all vibrations and impacts to be directly transmitted to passengers when the vehicle encounters bumps during driving, greatly affecting the riding experience. SUMMARY

[0003] The utility model discloses a push car, which aims to improve stability and safety, improve damping effect and improve riding comfort.

[0004] To achieve the above-mentioned purpose, the utility model provides a push car, which comprises:

[0005] Frame;

[0006] Bearing frame, which is movably installed on the frame by a first connecting piece; the bearing frame has a first end and a second end, and in the horizontal direction, the first end and the second end are located on both sides of the first connecting piece;

[0007] Limiting structure, comprising a first traction rope, one end of the first traction rope is connected with the frame, and the other end of the first traction rope is connected with the first end of the bearing frame;

[0008] When the second end is stressed, the first traction rope is tensioned between the frame and the first end of the bearing frame to limit the overturning of the bearing frame.

[0009] In an embodiment, the first traction rope is provided with two, and in the horizontal direction, the two first traction ropes and the first connecting piece are triangularly distributed;

[0010] The two first traction ropes are oppositely located on both sides of the first connecting piece.

[0011] In an embodiment, the limiting structure further comprises a second traction rope, one end of the second traction rope is connected with the frame, and the other end of the second traction rope is connected with the second end of the bearing frame;

[0012] When the first end is stressed, the second traction rope is tensioned between the frame and the second end of the bearing frame to limit the overturning of the bearing frame.

[0013] In an embodiment, the second traction rope is provided with two, and in the horizontal direction, the two second traction ropes and the first connecting piece are triangularly distributed;

[0014] Two of the second traction ropes are located on two sides of the first connecting member.

[0015] In an embodiment, the first traction rope and the second traction rope are both flexible ropes.

[0016] In an embodiment, the first traction rope and the second traction rope are both steel wire traction ropes.

[0017] In an embodiment, the carrier frame comprises a frame body and a seat plate arranged on the frame body, and the vehicle frame comprises a transverse support member;

[0018] Part of the frame body extends below the transverse support member to form a frame connecting portion, and the first connecting member is a connecting traction rope connected between the frame connecting portion and the transverse support member.

[0019] In an embodiment, the first connecting member is arranged at the center of gravity of the carrier frame.

[0020] In an embodiment, the first traction rope and the second traction rope are respectively fixedly connected at the front and rear ends of the carrier frame, and two of the first traction ropes are arranged in the left-right direction, and two of the second traction ropes are arranged in the left-right direction.

[0021] In an embodiment, the carrier frame has a carrying surface, the carrying surface is quadrangular, and two of the first traction ropes and two of the second traction ropes are respectively fixedly connected at four corners of the carrying surface.

[0022] In an embodiment, the first end is the rear end, the second end is the front end, the first traction rope is located at the rear end of the carrier frame, and the second traction rope is located at the front end of the carrier frame, and in a use state, the second traction rope is arranged to extend downward as a whole, so that when the second end is subjected to a force, the second traction rope pulls the carrier frame to prevent the carrier frame from moving forward or overturning.

[0023] In an embodiment, the vehicle frame further comprises a vehicle frame body, a left side support member and a right side support member, the left side support member and the right side support member are respectively connected to two sides of the vehicle frame body, and two ends of the transverse support member are mounted on the left side support member and the right side support member.

[0024] The stroller further comprises wheels and a push rod, the wheels are provided in two, the two wheels are respectively arranged on the left side support member and the right side support member, and the push rod is connected to an upper portion of the vehicle frame.

[0025] The utility model discloses a trolley, wherein the frame is the main support structure of the whole trolley, and provides an overall frame. The bearing frame is movably installed on the frame through a first connecting piece. The bearing frame has a first end and a second end, and the two ends are respectively located on the two sides of the first connecting piece in the horizontal direction. The limiting structure includes a first traction rope, one end of which is connected with the frame, and the other end is connected with the first end of the bearing frame. When the second end of the bearing frame is subjected to an external force, the first traction rope will be tensioned, limiting the overturning of the bearing frame. When the second end (front end) of the bearing frame is subjected to an upward external force (for example, when loading goods or encountering an obstacle), the first traction rope will gradually be tightened, limiting the rotation angle of the bearing frame around the first connecting piece, preventing it from moving forward or overturning. The design of the first traction rope utilizes the principle of lever and torque balance, so that the bearing frame can remain stable even under a larger external force, and will not easily overturn. The first traction rope can provide immediate limiting effect, ensuring that the movement of the bearing frame under different operating conditions is more stable and controllable. Through the combination of the first connecting piece and the first traction rope, multiple support points are provided, so that the bearing frame can more evenly disperse stress when subjected to an external force, reducing the risk of excessive stress on one side. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structures shown in these drawings without creative labor.

[0027] Figure 1 The structure schematic view of one embodiment of the trolley provided by the utility model is shown in the figure.

[0028] Figure 2 The structure schematic view of another embodiment of the trolley provided by the utility model is shown in the figure.

[0029] Figure 3 The structure schematic view of still another embodiment of the trolley provided by the utility model is shown in the figure.

[0030] Figure 4 The structure schematic view of one embodiment of the bearing frame provided by the utility model is shown in the figure.

[0031] Explanation of reference numerals:

[0032] 10, frame; 11, transverse support; 12, frame body; 13, left side support; 14, right side support; 20, bearing frame; 21, frame body; 22, seat plate; 23, frame body connecting portion; 30, first connecting piece; 40, limiting structure; 41, first traction rope; 42, second traction rope; 50, wheel; 60, push rod.

[0033] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.

[0035] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0036] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skill in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

[0037] The present application provides a cart.

[0038] Referring to Figures 1-4 In the embodiments of the present application, a cart comprises:

[0039] The frame 10;

[0040] A carrier frame 20 is movably mounted to the frame 10 by a first connecting member 30; the carrier frame 20 has a first end and a second end, which are located on two sides of the first connecting member 30 in the horizontal direction;

[0041] A limiting structure 40 includes a first traction rope 41, one end of which is connected to the frame 10, and the other end of which is connected to the first end of the carrier frame 20;

[0042] When the second end is subjected to a force, the first traction rope 41 is tensioned between the frame 10 and the first end of the carrier frame 20 to limit the overturning of the carrier frame 20.

[0043] The utility model discloses a kind of trolleys, including the base frame of entire trolley of trolley 10, support and connect all other components, provide structural support and stability.Carrying frame 20 is used to place the platform of article, it is connected with trolley 10 by first connecting piece 30, allow certain range of activity (for example, up and down swing).First connecting piece 30 makes carrying frame 20 can be active relative to trolley 10, but while keeping the connection between the two. Limiting structure 40 includes first traction rope 41, one end is fixed on trolley 10, the other end is connected to the first end of carrying frame 20. When the second end of carrying frame 20 is subjected to external force (such as downward pressure), first traction rope 41 will be tensioned because carrying frame 20 tries to overturn, to prevent carrying frame 20 from unnecessary overturning around first connecting piece 30, improve use safety.Limiting structure 40's main function is to prevent carrying frame 20 from excessive rotation or overturning.The existence of first traction rope 41 ensures that even if the load distribution on carrying frame 20 is uneven, the entire trolley can still maintain good balance. This is very important for maintaining the stability of the user during transportation. Although there is a function of limiting overturning, the active installation realized by first connecting piece 30 can allow carrying frame 20 to make certain angle adjustment as needed, providing better operation flexibility for the user. It can be understood that first connecting piece 30 and limiting structure 40 act together, the former provides the freedom of movement of carrying frame 20, and the latter ensures the safety limit in this movement. They complement each other, not only ensure that carrying frame 20 can be adjusted in angle as needed, but also avoid unsafe overturning caused by external force. This design maintains a dynamic balance. In normal use, carrying frame 20 can move freely within a certain range, but once it approaches the angle that may cause overturning, limiting structure 40 will act to keep carrying frame 20 in a safe position. Therefore, the utility model scheme is to provide a torque against overturning by using the tension of traction rope, which improves the safety and stability of the trolley, even on inclined or uneven ground, or when one end of carrying frame 20 is subjected to force, it can maintain stability and will not easily overturn. Compared with other complex anti-overturning mechanisms, such as additional support arms or hydraulic devices, using simple rope as limiting structure 40 is more economical and easy to maintain. It does not require additional power source, and does not involve complex mechanical parts, reducing failure rate and maintenance cost.

[0044] Referring Figures 1-4 In the utility model embodiment, the first traction rope 41 is provided with two, in horizontal direction, two first traction rope 41 and first connecting piece 30 are triangularly distributed;

[0045] Two first traction rope 41 are opposite to both sides of first connecting piece 30.

[0046] Two first traction ropes 41 are installed on both sides of the first end of the carrier frame 20 and are fixed to different positions of the vehicle frame 10. The two first traction ropes form a stable triangular structure with the first connecting piece 30, ensuring that the movement range of the carrier frame 20 is strictly limited within a safe area. The two first traction ropes 41 are located on both sides of the first connecting piece 30, ensuring that they can apply tension from different angles when the carrier frame 20 is tilted, maintaining the balance of the carrier frame 20. By using two first traction ropes 41 instead of one, more uniform force distribution can be provided. When the carrier frame 20 is subjected to external forces, the two first traction ropes 41 can work simultaneously to prevent the carrier frame 20 from overturning around the first connecting piece 30. The two first traction ropes 41 are located on both sides of the first connecting piece 30, forming a triangular layout that can better control the movement of the carrier frame 20, ensuring its stability in any position. If one of the first traction ropes 41 fails or is damaged, the other can still play a certain limiting role. This double-rope design can more effectively resist forces from different directions, thereby improving the stability of the overall structure. The two first traction ropes 41 can share the load acting on the carrier frame 20, reducing the maximum stress on each rope. This not only helps to prolong the service life of the ropes, but also reduces the risk of rupture due to overloading of a single rope. The triangle is one of the most stable geometric shapes. By distributing the two first traction ropes 41 and the first connecting piece 30 in a triangular shape, the overall structure is more mechanically stable and can effectively resist various forms of external impact and moments. It can be understood that the first connecting piece 30 can be a hinge, allowing the carrier frame 20 to rotate around a fixed axis; it can also be a spherical joint, which allows the carrier frame 20 to move freely in multiple directions, providing greater flexibility. It is suitable for situations that require full-range angle adjustment; it can also be a rotary bearing, which can withstand large radial loads; it can also be a pivot pin, which can achieve simple rotational motion by fixing the pivot pin in a position.

[0047] Referring to Figures 1-4 In the embodiments of the present application, the limiting structure 40 further comprises a second traction rope 42, one end of the second traction rope 42 is connected with the vehicle frame 10, and the other end of the second traction rope 42 is connected with the second end of the carrier frame 20.

[0048] When the first end is subjected to force, the second traction rope 42 is tensioned between the vehicle frame and the second end of the carrier frame 20 to limit the overturning of the carrier frame 20.

[0049] The first traction rope 41 is fixed at one end to the frame 10 and connected at the other end to the first end of the carrier frame 20, mainly used to prevent the second end from turning over when subjected to force. The second traction rope 42 is also fixed at one end to the frame 10, but connected at the other end to the second end of the carrier frame 20, used to prevent the first end from turning over when subjected to force. The first traction rope 41 mainly prevents the carrier frame 20 from turning over due to force on the second end, while the second traction rope 42 is used to prevent the carrier frame 20 from turning over when force is applied to the first end. In this way, whether the first end or the second end is subjected to external force, there is a corresponding traction rope to provide restriction, ensuring bidirectional protection. The first traction rope 41 and the second traction rope 42 exert pulling force on the carrier frame 20 from different angles, forming a multi-angle constraint mechanism. The simultaneous presence of the first traction rope 41 and the second traction rope 42 makes the movement of the carrier frame 20 in any direction effectively limited. Even if operating on uneven ground or encountering unexpected impact, the carrier frame 20 can still maintain a relatively stable position, reducing the risk of turning over. The simultaneous presence of the first traction rope 41 and the second traction rope 42 can more evenly distribute the force that may cause turning over, avoiding excessive stress on a single rope. This not only helps to prolong the service life of the rope, but also reduces the possibility of failure due to single-point overload. By introducing the second traction rope 42, this design not only provides bidirectional protection, but also optimizes the mechanical properties and load sharing capacity of the stroller, significantly improving the safety and operational stability of the stroller.

[0050] With reference to Figures 1-4 In the embodiments of the present application, the second traction rope 42 is provided with two, in the horizontal direction, the two second traction ropes 42 and the first connecting piece 30 are triangularly distributed.

[0051] The two second traction ropes 42 are located on both sides of the first connecting piece 30.

[0052] The two second traction ropes 42 are installed on both sides of the second end of the carrier frame 20 and are fixed to different positions of the vehicle frame 10 at one end. The two second traction ropes form a stable triangular structure with the first connecting piece 30, ensuring that the movement range of the carrier frame 20 is strictly limited within a safe area. The two second traction ropes 42 are located on both sides of the first connecting piece 30, ensuring that they can exert pulling force from different angles when the carrier frame 20 is tilted, maintaining the balance of the carrier frame 20. By using two second traction ropes 42 instead of one, more uniform force distribution can be provided. When the carrier frame 20 is subjected to external force, the two second traction ropes 42 can work simultaneously to prevent the carrier frame 20 from overturning around the first connecting piece 30. The two second traction ropes 42 are located on both sides of the first connecting piece 30, forming a triangular layout that can better control the movement of the carrier frame 20, ensuring its stability in any position. If one of the traction ropes fails or is damaged, the other can still play a certain limiting role. This double-rope design can more effectively resist forces from different directions than a single rope, thereby improving the overall stability of the structure. The two second traction ropes 42 can share the load acting on the carrier frame 20, reducing the maximum stress on each rope. This not only helps to prolong the service life of the ropes, but also reduces the risk of rupture due to overloading of a single rope. The triangle is one of the most stable geometric shapes. By distributing the two second traction ropes 42 and the first connecting piece 30 in a triangular shape, the entire structure is more mechanically stable and can effectively resist various forms of external impact and torque.

[0053] With reference to Figures 1-4 In the embodiments of the present application, the first traction rope 41 and the second traction rope 42 are both flexible ropes.

[0054] Flexible ropes are generally lighter, which can reduce the weight of the entire stroller, making it easier to operate and transport. Flexible ropes are generally less expensive, which can reduce manufacturing costs and are suitable for mass production. Flexible ropes are relatively easy to install and replace, without the need for special tools or skills, simplifying maintenance. Flexible materials have a certain degree of elasticity and can absorb impact forces to some extent, reducing vibrations transmitted to the carrier frame 20.

[0055] With reference to Figures 1-4 In the embodiments of the present application, the first traction rope 41 and the second traction rope 42 are both steel wire traction ropes.

[0056] Steel wire traction ropes have very high tensile strength, can withstand greater loads and more intense external forces, and are suitable for high-strength use. Steel wire ropes have good resistance to environmental factors such as temperature changes, humidity, and chemicals, and have a long service life. Due to its rigidity and stability, the steel wire traction rope can provide more precise limit control, ensuring that the carrier frame 20 remains stable under various conditions.

[0057] With reference to Figures 1-4 In the embodiments of the utility model, the carrier frame 20 includes a frame body 21 and a seat plate 22 arranged on the frame body 21, and the vehicle frame 10 includes a transverse support 11.

[0058] Part of the frame body 21 is arranged below the transverse support 11 to form a frame body connecting portion 23, and the first connecting member 30 is a connecting traction rope connected between the frame body connecting portion 23 and the transverse support 11.

[0059] The carrier frame 20 is composed of the frame body 21 and the seat plate 22. The frame body 21 is used for support, and the seat plate 22 can be used by the user. The vehicle frame 10 includes a transverse support 11, which mainly functions to provide structural support for the entire stroller and serves as a basis for connection with the carrier frame 20. Part of the frame body 21 extends below the transverse support 11 to form a dedicated connecting area, referred to as the frame body connecting portion 23. The first connecting member 30 is a connecting traction rope connected between the frame body connecting portion 23 and the transverse support 11, which allows the carrier frame 20 to move within a certain range relative to the vehicle frame 10. By using a connecting traction rope as the first connecting member 30, the carrier frame 20 can move freely within a certain range, adapting to different operating requirements. At the same time, this flexible connection can also absorb part of the shock, improving the comfort of the ride. Despite the movable connection, the design of the frame body 21 extending below the transverse support 11 ensures sufficient support area, not only saving vertical space but also making the overall size of the stroller more compact, and enhancing the stability of the overall structure, reducing the risk of overturning. It can be understood that the transverse support 11 movably connected to the carrier frame 20 can be connected through a hinge, a spherical joint, or a pivot pin. It can be understood that the frame body 21 can be a frame structure, which can be a frame structure welded or bolted by multiple metal pipes or profiles, forming a stable support platform; or it can be a grid plate structure used as a bearing surface, providing sufficient support force.

[0060] With reference to Figures 1-4 In the embodiments of the utility model, the first connecting member 30 is arranged relative to the center of gravity of the carrier frame 20.

[0061] The center of gravity of the carrier frame 20 refers to the center of weight distribution of the goods and the carrier frame itself. By arranging the first connecting member 30 near or opposite to the center of gravity of the carrier frame 20, the mechanical principle can be maximally utilized to improve the stability of the stroller. Since the first connecting member 30 is close to the center of gravity, the movement of the carrier frame 20 is more controllable. Whether it is up and down swing or left and right tilt, a larger position adjustment can be achieved through a smaller angle change, providing higher operation accuracy. The design close to the center of gravity helps to reduce the transmission of vibration from the carrier frame 20 to the frame 10, enhancing the ride comfort.

[0062] With reference to Figures 1-4 In the embodiment of the utility model, the first traction rope 41 and the second traction rope 42 are respectively fixedly connected to the front and rear ends of the carrier frame 20, and the two first traction ropes 41 are arranged in the left-right direction, and the two second traction ropes 42 are arranged in the left-right direction.

[0063] By arranging a pair of traction ropes at the front and rear ends of the carrier frame 20, multiple support points are provided, so that the carrier frame 20 can more evenly disperse stress when subjected to external force, reducing the risk of excessive stress on one side. No matter which end is stressed, the corresponding traction rope will immediately respond and tighten, providing immediate limiting action. This two-way protection mechanism ensures that the carrier frame 20 remains stable even under complex or variable operating conditions and is not easily overturned. The arrangement in the left-right direction can apply tension at different angles and more evenly disperse external forces acting on the carrier frame 20, maintaining the balance of the carrier frame 20. The two traction ropes can more evenly share the force that may cause overturning, avoiding excessive stress on a single rope. This helps to prolong the service life of the rope and reduce the risk of failure due to single-point overload.

[0064] With reference to Figures 1-4 In the embodiment of the utility model, the carrier frame 20 has a bearing surface, the bearing surface is quadrangular, and the two first traction ropes 41 and the two second traction ropes 42 are respectively fixedly connected to the four corners of the bearing surface.

[0065] By arranging the traction ropes at the four corners of the bearing surface, multiple support points are provided, so that the bearing frame 20 can more evenly disperse stress when subjected to external force, reducing the risk of excessive stress on one side. No matter which end or side is subjected to force, the corresponding traction rope will immediately respond and tighten, providing immediate limiting action. This all-around protection mechanism ensures that the bearing frame 20 remains stable even under complex or variable use conditions and is not easily overturned. The traction rope layout at the four corners can adapt to different load distribution situations, providing good stability whether the load is evenly distributed or asymmetrically distributed. Each type of traction rope forms a stable triangular structure with the first connecting piece 30, exerting pulling force on the bearing frame 20 from multiple angles, further enhancing the stability and reliability of the stroller.

[0066] With reference to Figures 1-4 In the embodiments of the present application, the first end is the rear end, the second end is the front end, the first traction rope 41 is located at the rear end of the bearing frame 20, and the second traction rope 42 is located at the front end of the bearing frame 20. In the use state, the second traction rope 42 is arranged to extend downwardly and obliquely as a whole, so that when the second end is subjected to force, the second traction rope 42 pulls the bearing frame 20 to prevent the bearing frame 20 from moving forward or overturning.

[0067] The two first traction ropes 41 are located at the rear end of the bearing frame 20 (left and right sides) to prevent overturning when the rear end is subjected to force. The two second traction ropes 42 are located at the front end of the bearing frame 20 (left and right sides) and are arranged to extend downwardly and obliquely in the use state. When the front end (second end) of the bearing frame 20 is subjected to upward external force (e.g., encounters an obstacle), the second traction rope 42 will be tightened and extend downwardly and obliquely. This design not only limits the rotation angle of the bearing frame 20, but also exerts a backward pulling force on the bearing frame 20, effectively preventing it from moving forward or overturning. Since the second traction ropes 42 extend downwardly and obliquely, they can generate a counteracting force against the forward tilting moment, further enhancing the stability of the stroller, especially when the front end of the bearing frame 20 is subjected to force. The design of the second traction ropes 42 particularly enhances the stability of the front end, which improves stability on uneven ground.

[0068] With reference to Figures 1-4 Figures 1-4 In the embodiments of the present application, the stroller frame 10 further comprises a stroller frame body 12, a left side bracket 13, and a right side bracket 14. The left side bracket 13 and the right side bracket 14 are connected to the two sides of the stroller frame body 12, and the two ends of the transverse support member 11 are mounted to the left side bracket 13 and the right side bracket 14.

[0069] The stroller further comprises two wheels 50, which are respectively arranged on the left side support 13 and the right side support 14, and a push rod 60 connected with the upper part of the frame 10.

[0070] The frame body 12 provides the overall framework as the main support structure of the entire stroller. The left side support 13 and the right side support 14 are respectively connected to the two sides of the frame body 12, enhancing the lateral stability and providing mounting positions for the wheels 50. The carrier 20 is movably mounted on the frame body 12 through the first connecting member 30, allowing the carrier 20 to freely move within a certain range to adapt to different operation requirements. Two wheels 50 are arranged on the left side support 13 and the right side support 14 respectively, ensuring the smooth movement of the stroller. The push rod 60 is connected with the upper part of the frame 10, used for pushing or pulling the stroller, facilitating the user to control. The first connecting member 30 between the carrier 20 and the transverse support 11 forms a stable triangular structure, exerting pulling force on the carrier 20 from multiple angles, further enhancing the stability and reliability of the stroller. The design of the two side supports and the wheels 60 increases the impact resistance of the stroller, especially when encountering uneven ground or accidental impact, it can better absorb and disperse energy, reducing the vibration and impact transmitted to the carrier 20.

[0071] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A cart, characterized in that, The utility model relates to a vehicle frame structure, comprising: a vehicle frame; a load carrier movably mounted to the vehicle frame by a first connecting member; the load carrier has a first end and a second end, which are located on two sides of the first connecting member in a horizontal direction; a limiting structure comprising first traction ropes, one end of each of the first traction ropes being connected to the vehicle frame, and the other end of each of the first traction ropes being connected to the first end of the load carrier; when a force is applied to the second end, the first traction ropes are tensioned between the vehicle frame and the first end of the load carrier to limit the load carrier from overturning.

2. The cart of claim 1, wherein, The first traction ropes are provided in two, and the two first traction ropes and the first connecting member are in a triangular distribution in a horizontal direction; the two first traction ropes are located on two sides of the first connecting member.

3. The cart of claim 1, wherein, The limiting structure further comprises second traction ropes, one end of each of the second traction ropes being connected to the vehicle frame, and the other end of each of the second traction ropes being connected to the second end of the load carrier; when a force is applied to the first end, the second traction ropes are tensioned between the vehicle frame and the second end of the load carrier to limit the load carrier from overturning.

4. The cart of claim 3, wherein, The second traction ropes are provided in two, and the two second traction ropes and the first connecting member are in a triangular distribution in a horizontal direction; the two second traction ropes are located on two sides of the first connecting member.

5. The cart of claim 3, wherein, The first traction ropes and the second traction ropes are flexible ropes; or The first traction ropes and the second traction ropes are steel wire traction ropes.

6. The cart of any one of claims 1 to 5, wherein, The load carrier comprises a carrier body and a seat plate arranged on the carrier body, and the vehicle frame comprises a transverse support member; part of the carrier body extends below the transverse support member to form a carrier body connecting portion, and the first connecting member is a connecting traction rope connected between the carrier body connecting portion and the transverse support member.

7. The cart of claim 6, wherein, The first connecting member is located at the center of gravity of the load carrier.

8. The cart of claim 3, wherein, The first traction ropes and the second traction ropes are respectively fixedly connected to the front and rear ends of the load carrier, the two first traction ropes are arranged in a left-right direction, and the two second traction ropes are arranged in a left-right direction.

9. The cart of claim 8, wherein, The load carrier has a load bearing surface, the load bearing surface is quadrangular, and the two first traction ropes and the two second traction ropes are respectively fixedly connected to four corners of the load bearing surface.

10. The cart of claim 8, wherein, The first end is the rear end, the second end is the front end, the first traction ropes are located at the rear end of the load carrier, and the second traction ropes are located at the front end of the load carrier, in a use state, the second traction ropes are arranged in an overall obliquely downward direction, so that when a force is applied to the second end, the second traction ropes pull the load carrier to prevent the load carrier from moving forward or overturning.

11. The cart of claim 6, wherein, The vehicle frame further comprises a vehicle frame body, a left side support and a right side support, the left side support and the right side support are respectively connected to two sides of the vehicle frame body, and two ends of the transverse support member are mounted to the left side support and the right side support. The stroller further comprises wheels and a push rod, the wheels are provided with two, two of the wheels are respectively arranged on the left support and the right support, and the push rod is connected with the upper part of the frame.

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