A beach trolley

Abstract

The utility model relates to a kind of beach trolley, including foldable car body frame and the storage bag of being set in car body frame;Car body frame includes the four vertical surfaces of front and rear both ends and left and right sides, and the lower side of corresponding front and rear vertical surface is respectively provided with a pair of gyro wheel, and car body frame is supported by gyro wheel and walks;Wherein: at least in the pair of gyro wheel between one vertical surface of front and rear, still be provided with auxiliary wheel, and the auxiliary wheel is equal to gyro wheel.This utility model does not change the basic structure of original trolley, and auxiliary wheel is additionally arranged between the pair of gyro wheel in front and rear vertical surface bottom, realizes multiple point support, both increases ground support area, also improves the situation that local gyro wheel sinks into sand and cannot walk, equivalent situation greatly improves the passability of vehicle;Same specification wide body gyro wheel can also be used, and the whole is not only beautiful and uniform, but also easy to realize;Auxiliary wheel uses detachable assembly structure, satisfies two kinds of use scenes of hard ground traffic and beach walking.

Description

Technical Field

[0001] This utility model belongs to the field of transportation equipment, and specifically relates to a beach handcart, particularly a multi-wheel design. Background Technology

[0002] Existing beach trolleys are structurally similar to land-based trolleys, except for the addition of wide wheels to increase their ability to prevent sinking into the sand. Increasing the wheel contact area is the simplest solution for four-wheeled trolleys, but beach conditions are complex, with varying sand density. Often, one or two wheels cannot provide sufficient support, causing the trolley to sink. This isn't because all four wheels are unable to support the weight of the trolley. Furthermore, increasing wheel width has economic and aesthetic standards; it's not a matter of simply increasing it infinitely. Most existing trolleys consist of a frame and storage bags stretched to the frame. The frames generally fall into two categories: flat folding and fully folding. Flat folding trolleys are further divided into those with and without a bottom support frame. Fully folding trolleys typically lack a bottom support frame, with the weight borne by the storage bags stretched to the frame.

[0003] A folding trolley without a bottom support frame, such as CN202223330525.0, discloses a foldable trolley including a foldable frame and a storage bag. The frame has two sides hinged together by two sets of first and second diagonal bars that intersect at the center. The first diagonal bar in each set is formed by bending a single rod, with the bent bottom section facing the front and rear ends. This bottom section supports and tightens the bottom of the storage bag. The front and rear facades and the middle section of the frame are hinged together by three U-shaped pillars, which support the upper edge of the storage bag, forming a foldable and unfoldable whole. This trolley has four facades. The front and rear facades are formed by the U-shaped bottom section of the pillars, or by the U-shaped diagonal bars extending into the bottom section of the pillars, facilitating the installation of rollers.

[0004] CN201310238868.0 discloses a folding trolley, a representative example of one with a bottom support frame, comprising a folding frame and flexible fabric. The folding frame includes a bottom frame, an upper U-frame, a front U-frame, an armrest U-frame, a support U-frame, front rollers, and rear rollers. The rear rollers are mounted on the rear of the bottom frame, and the front rollers are mounted on the crossbeams of the support U-frames, which support the front of the bottom frame. The flexible fabric is processed into a tube bag structure, with the lower edge of the tube bag positioned on the bottom frame. The two ends of the armrest U-frame are respectively hinged to the rear sides of the bottom frame, and the middle part is hinged to the rear sides of the upper U-frame. The front U-frame and the support U-frame are intersected and hinged together at their middle sides. The two ends of the front U-frame are respectively hinged to the middle sides of the bottom frame, and the two ends of the support U-frame are respectively hinged to the front ends of the upper U-frame. The upper edge of the tube bag is positioned on the crossbars of the upper U-frame and the front U-frame. In this structure, the folding frame is made up of multiple sets of U-shaped rods hinged together, so that there are U-shaped crossbeams at the bottom of both the front and rear facades, which greatly facilitates the installation of the rollers.

[0005] The purpose of this invention is to find a way to overcome the limitations of existing handcarts that cannot be directly driven on the beach. Utility Model Content

[0006] The purpose of this invention is to design a beach trolley with auxiliary wheels added to the front and rear facades.

[0007] The technical solution of this utility model is implemented as follows: a beach trolley includes a foldable frame and a storage bag fitted on the frame; the frame includes four sides: front and rear ends and left and right sides, and a pair of rollers are respectively provided on the lower side of the front and rear sides, which support the frame to move; the feature is that: at least one auxiliary wheel is provided between the pair of rollers on the front and rear sides, and the auxiliary wheel is the same size as the roller.

[0008] The front and rear facades of the vehicle frame are each equipped with an auxiliary wheel, which is the same specification as the roller and is a detachable installation structure.

[0009] The vehicle frame has an independent bottom support frame, and auxiliary wheels can be detachably installed in the middle of the front and rear frame bars of the bottom support frame, or in the middle of the U-shaped crossbeam supporting the bottom support frame.

[0010] The vehicle frame has no bottom support frame. The auxiliary wheels can be detachably installed on the front and rear facades of the vehicle frame to tighten the bottom of the storage bag, or on the middle of the U-shaped crossbeam supporting the vehicle frame.

[0011] This utility model adds auxiliary wheels between a pair of rollers at the bottom of the front and rear facades without changing the basic structure of the original handcart, so as to achieve multi-point support. This not only increases the ground support area, but also improves the situation where some rollers get stuck in the sand and cannot move. Under the same conditions, it greatly improves the vehicle's passability. Wide-body rollers of the same specification can also be used, which is both beautiful and uniform and easy to implement. The auxiliary wheels adopt a detachable assembly structure to meet the two usage scenarios of walking on hard ground and walking on the beach. Attached Figure Description

[0012] The present invention will be further described below with reference to specific figures:

[0013] Figure 1 A diagram of a beach trolley

[0014] Figure 2 Schematic diagram of the frame of a beach trolley

[0015] Figure 3 Schematic diagram of the two-wheeled frame of the beach trolley

[0016] in

[0017] 100—Vehicle frame; 101—Bottom support frame; 200—Storage bag;

[0018] 1—Roller; 2—Auxiliary wheel; 3—Frame rod; 4—U-shaped crossbeam; Detailed Implementation

[0019] Reference Figure 1 and Figure 2 This is an example of a beach trolley without a bottom support frame. The storage bag 200 is stretched taut over the space enclosed by the trolley frame 100. The trolley frame 100 includes four facades: front and rear ends and left and right sides. A pair of rollers 1 are respectively provided on the lower side of the front and rear facades. The rollers 1 support the trolley frame 100 to move. An auxiliary wheel 2 is also provided between at least one pair of rollers 1 on the front and rear facades. The auxiliary wheel 2 is the same size as the rollers 1 and can provide ground support together with the four rollers 1. It is distributed in two rows in the front and rear, which increases the load-bearing capacity, improves the sand crossing performance, and also prevents a single roller from sinking into the sand and causing the trolley to tilt or get stuck.

[0020] In this illustration, an auxiliary wheel 2 is centrally located on both the front and rear sides of the vehicle frame 100, forming a six-wheel system. The auxiliary wheel 2 is the same specification as the roller 1 and is a detachable installation structure, so that it can be used in both hard and sandy environments. It is also easy to fold and store after disassembly.

[0021] Furthermore, the vehicle frame 100 has no bottom support frame, and the auxiliary wheel 2 can be detachably installed on the front and rear vertical surfaces of the vehicle frame 100 in the middle of the front and rear frame bars 3 used to tighten the bottom of the storage bag 200, or in the middle of the U-shaped crossbeam 4 supporting the vehicle frame 100.

[0022] Because the frame 100 of this type of handcart is a flat folding structure, the front and rear ends can be joined together. Therefore, both the front and rear ends can be designed with frame bars 3 at the bottom, which are both part of the original frame 100 and can also be specially designed for installing auxiliary wheels 2. Figure 2 The front facade, with its closed structure formed by two U-shaped bars, allows for direct installation of rollers 1 and auxiliary wheels 2 using the bottom U-shaped beam 4. The rear facade, however, only has one U-shaped bar, with the U-shaped beam 4 facing upwards as a handrail, making direct use impossible. Therefore, two structural options are available: 1. A beam can be hinged to both ends of the U-shaped bar to close it, strengthening the open end and providing space for installing the rollers and auxiliary wheels. Figure 2 The dotted lines indicate: 2. The auxiliary wheels 2 are installed by using the diagonal braces supporting the vehicle frame on both the left and right sides, extending into the U-shaped crossbeams 4 at both the front and rear ends, minimizing the need to add additional components. The choice can be made flexibly based on the design.

[0023] Reference Figure 3In this example, the vehicle frame 100 has an independent bottom support frame 101. The auxiliary wheels 2 are detachably installed in the middle of the front and rear frame bars 3 of the bottom support frame 101, or in the middle of the U-shaped crossbeam 4 supporting the bottom support frame 101. The former directly uses the bottom support frame 101 to install the rollers 1 and auxiliary wheels 2, while the latter uses the U-shaped crossbeam 4 of the U-shaped bars supporting the bottom support frame 101 to install the rollers 1 and auxiliary wheels 2; or a combination of both, as in this example, so that the front and rear rows of rollers 1 can be folded together to reduce space occupation.

[0024] Both examples above achieve the purpose of adding auxiliary wheels 2 without adding any additional rods. This is also applicable to adding auxiliary wheels 2 to other folding handcarts with frame rods at the bottom of the front and rear facades or with a bottom support frame, expanding their usage scenarios. Furthermore, the auxiliary wheels 2 use the same specifications as the rollers 1, ensuring versatility and eliminating the need for increased production costs. Depending on the requirements, one or two auxiliary wheels can be added to form a five-wheel or six-wheel structure, or an eight-wheel structure can be added to further improve the sand bearing capacity. The detachable auxiliary wheels 2 involved are existing technology, such as the detachable caster disclosed in CN201710940814.7, which is suitable for this solution. The height only needs to be adjusted to match the rollers 1 on both sides. This also includes other detachable roller structures.

Claims

1. A beach trolley, comprising a foldable frame (100) and a storage bag (200) fitted onto the frame (100); the frame (100) includes four facades: front and rear ends and left and right sides, and a pair of rollers (1) are respectively provided on the lower side of the front and rear facades, the rollers (1) supporting the frame (100) to move; characterized in that: An auxiliary wheel (2) is provided between at least one pair of rollers (1) on the front and rear facades. The auxiliary wheel (2) is the same size as the roller (1).

2. A beach cart according to claim 1, characterized in that: An auxiliary wheel (2) is provided on both the front and rear sides of the vehicle frame (100), and the auxiliary wheel (2) is the same as the roller (1) and is a detachable installation structure.

3. A beach cart according to claim 1 or 2, characterized in that: The vehicle frame (100) has an independent bottom support frame (101), and the auxiliary wheel (2) can be detachably installed in the middle of the front and rear frame rods (3) of the bottom support frame (101), or in the middle of the U-shaped crossbeam (4) supporting the bottom support frame (101).

4. A beach cart according to claim 1 or 2, characterized in that: The vehicle frame (100) has no bottom support frame. The auxiliary wheel (2) is detachably installed on the front and rear facades of the vehicle frame (100) in the middle of the front and rear frame bars (3) for tightening the bottom of the storage bag (200), or in the middle of the U-shaped crossbeam (4) supporting the vehicle frame (100).

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