An increased capacity, stowable, reduced height trailer

Abstract

The utility model discloses a kind of capacity-increasing stowed height-lowering trailers, including four bottom roller-equipped support tubes symmetrically distributed in four corners, two n-shaped tubes, two side frames and a chassis, the side frame two sides are movably connected with front and rear two support tubes, and the chassis four corners are movably connected with the lower end of four support tubes respectively;The lower end of two support tubes of front side or rear side is connected with the two ends of lower cross pipe respectively, and the two vertical pipes of n-shaped tube are longitudinally slidably connected with two support tubes of front side or rear side respectively.By pulling up n-shaped tube, n-shaped tube moves up along support tube, expand the capacity of cart, user can flexibly adjust according to the amount of transported goods, when folding up, n-shaped tube moves down and reduces the height of trailer.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of handcart, concretely relates to a trailer of capacity increase, folding and height reduction. BACKGROUND

[0002] The handcart is mainly used for manually pushing and pulling to transport articles and is used in some inconvenient environment sites of motor vehicles in daily life. The existing handcart, such as the anti-toppling handcart for construction engineering disclosed in Chinese patent CN222005137U and the handcart convenient to fold disclosed in Chinese patent CN221794661U, has a fixed load space in the use state, and the user cannot adjust the capacity size, and the flexibility is poor. SUMMARY

[0003] The utility model aims at the defects of the prior art and provides a trailer of capacity increase, folding and height reduction.

[0004] In order to realize the above object, the utility model adopts the following technical scheme: a trailer of capacity increase, folding and height reduction, including four support pipes with rollers arranged symmetrically at four corners, two n-shaped pipes, two side frames and a bottom frame, the side frames are movably connected with the front and rear two support pipes at two sides, and the bottom frame is movably connected with the lower ends of the four support pipes at four corners; the lower ends of the two support pipes at the front side or the rear side are connected with the two ends of the lower cross pipe, and the two vertical pipes of the n-shaped pipe are longitudinally slidably connected with the two support pipes at the front side or the rear side.

[0005] Further, the support pipe is provided with a sliding block that can slide up and down, and the lower end portions of the two vertical pipes of the n-shaped pipe are connected with the two sliding blocks at the front side or the rear side.

[0006] Further, the lower end portions of the two vertical pipes of the n-shaped pipe are fixed with the sliding blocks through fasteners.

[0007] Further, the upper end portion of the support pipe is provided with a limiting portion, and the two vertical pipes of the n-shaped pipe pass through the limiting portion and can move up and down.

[0008] Further, the upper end portion of the support pipe is provided with a fixing seat, the inner side of the fixing seat is provided with the limiting portion, and the limiting portion is a hollow frame body.

[0009] Further, the side frame includes one or more folding assemblies movably riveted.

[0010] Further, the folding assembly includes two cross pipes movably riveted, or the folding assembly includes two parallel outer side pipes and two parallel inner side pipes, the upper outer side pipe is movably riveted with the pipe bodies of the two inner side pipes, and the lower outer side pipe is movably riveted with the lower end portions of the two inner side pipes.

[0011] Furthermore, the base frame includes two innerly connected bottom frames, and the outer sides of the bottom frames are movably connected to the lower horizontal tube on the front or rear side.

[0012] Furthermore, a retractable pull rod is movably connected to the lower horizontal tube on the front side.

[0013] Furthermore, the front rollers can be omnidirectional wheels with brakes, or the rear rollers can be directional wheels.

[0014] The beneficial effects of this utility model are as follows: by lifting the n-shaped tube upwards, the n-shaped tube moves upwards along the support tube, expanding the capacity of the trolley, which can be flexibly adjusted by the user according to the amount of goods to be transported; when folded up, the n-shaped tube moves downwards, reducing the height of the trailer, and the side frame, base frame, and pull rod can be folded up, reducing the volume of the whole vehicle after folding, which is conducive to the storage and transportation of the trailer. Attached Figure Description

[0015] Figure 1 This is a 3D view of the first type of trailer with its capacity increased, retractable, and height lowered, in its deployed state;

[0016] Figure 2 This is a 3D view of the first type of trailer with increased capacity, retractable height, and folded configuration;

[0017] Figure 3 It is the second type of three-dimensional trailer with expanded capacity, retractable and height-reduced configuration. Figure 1 ;

[0018] Figure 4 This is a 3D view of the second type of trailer with its capacity increased, height reduced, and folded down.

[0019] In the diagram: 1 Support tube, 2 Roller, 3 N-shaped tube, 4 Side frame, 4a Cross tube, 4b Outer tube, 4c Inner tube, 5 Base frame, 51 Base frame, 52 Hinge, 53 U-shaped piece, 6 Lower horizontal tube, 7 Slider, 8 Fixed seat, 81 Limiting part, 9 Pull rod. Detailed Implementation

[0020] The specific solutions and embodiments of this utility model will be further described in conjunction with the accompanying drawings, making the technical solution clearer and more understandable.

[0021] Example 1

[0022] like Figures 1-3 As shown, a trailer with increased capacity and height includes four support tubes 1 with rollers 2 at the bottom, two n-shaped tubes 3, two side frames 4, and a base frame 5 symmetrically distributed at the four corners. The two sides of the side frames 4 are movably connected to the front and rear support tubes 1, and the four corners of the base frame 5 are movably connected to the lower ends of the four support tubes 1 respectively. The lower ends of the two support tubes 1 on the front or rear side are respectively connected to the two ends of the lower horizontal tube 6, and the two vertical tubes of the n-shaped tubes 3 are respectively slidably connected to the two support tubes 1 on the front or rear side.

[0023] The support tube 1 is provided with a slider 7 which can slide up and down, and the lower ends of the two vertical tubes of the n-shaped tube are connected with the two sliders 7 on the front side or the rear side respectively.

[0024] The lower ends of the two vertical tubes of the n-shaped tube 3 are fixed with the sliders 7 through fasteners such as screws.

[0025] The upper end of the support tube 1 is provided with a limiting part 81, and the two vertical tubes of the n-shaped tube 3 pass through the limiting part 11 and can move up and down.

[0026] Specifically, the upper end of the support tube 1 is provided with a fixing seat 8, the inner side of the fixing seat 8 is provided with the limiting part 81, and the limiting part 81 is a hollow frame. The upper end of the support tube 1 is embedded in the mounting hole of the fixing seat 8, and the two are fixedly installed by screwing the screws through the fixing seat 8 and the upper end of the support tube 1.

[0027] The side frame 4 includes three folding assemblies which are movably riveted. The folding assembly includes two movably riveted cross tubes 4a, which are movably riveted by two tubes.

[0028] The bottom frame 5 includes two inner side movably connected bottom frames 51, and the outer side of the bottom frame 51 is movably connected with the lower cross tube 6 on the front side or the rear side. The inner sides of the two bottom frames 51 are movably connected through a hinge 52. The inner side of the lower cross tube 6 is provided with two U-shaped pieces 53, and the outer side of the bottom frame 51 is movably connected with the U-shaped pieces 53.

[0029] The lower cross tube 6 on the front side is movably connected with a telescopic pull rod 9. The pull rod 9 is rotatably installed in the middle part of the lower cross tube 6. The height of the pull rod after being reduced is less than or equal to the height of the support tube 1.

[0030] Among the rollers 2, the front side adopts a universal wheel with a brake, and the rear side adopts a directional wheel.

[0031] A rectangular cloth bag without a top surface can be arranged on the vehicle, the bottom surface of the rectangular cloth bag is placed on the bottom frame 5, and the front and rear top parts of the rectangular cloth bag are detachably fixed on the cross tube of the n-shaped tube through magic tape or the like.

[0032] Embodiment 2

[0033] As shown in Figures 3-4 Unlike embodiment 1, the side frame 4 of the capacity-increasing and folding trailer of the present embodiment includes two movably connected folding assemblies.

[0034] The folding assembly comprises two parallel outer side tubes 4b and two parallel inner side tubes 4c, the tube body of the upper outer side tube is movably riveted with the tube body of the two inner side tubes 4c respectively, and the tube body of the lower outer side tube is movably riveted with the lower end of the two inner side tubes 4c respectively.

[0035] It should be noted that the above are only preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A self-contained, collapsible, reduced-height trailer, characterized by, The support tube with four rollers at the bottom of four corners, two n-shaped tubes, two side frames and a bottom frame are symmetrically distributed, the side frames are movably connected with the front and rear support tubes, the bottom frame is movably connected with the lower ends of the four support tubes respectively, the lower ends of the two support tubes on the front side or the rear side are connected with the two ends of the lower horizontal tube respectively, and the two vertical tubes of the n-shaped tube are longitudinally slidably connected with the two support tubes on the front side or the rear side respectively.

2. The self-contained, self-erecting, self-leveling trailer of claim 1, wherein, The support tube is provided with a slider which can slide up and down, and the lower ends of the two vertical tubes of the n-shaped tube are connected with the two sliders on the front side or the rear side respectively.

3. The self-contained height-lowering, volume-increasing trailer of claim 1, wherein, The lower ends of the two vertical tubes of the n-shaped tube are fixed with the sliders by fasteners.

4. The self-contained height-lowering, volume-increasing trailer of claim 1, wherein, The upper end of the support tube is provided with a limiting part, and the two vertical tubes of the n-shaped tube pass through the limiting part and can move up and down.

5. The self-contained, self-erecting, self-leveling trailer of claim 4, wherein, The upper end of the support tube is provided with a fixing seat, the inner side of the fixing seat is provided with the limiting part, and the limiting part is a hollow frame.

6. The self-contained height-lowering, volume-increasing trailer of claim 1, wherein, The side frame comprises one or more folding assemblies which are movably riveted.

7. A self-stowing, height-reducing, volume-increasing trailer as claimed in claim 6, characterized in that The folding assembly comprises two movably riveted cross tubes, or the folding assembly comprises two parallel outer tubes and two parallel inner tubes, the upper outer tube is movably riveted with the tube bodies of the two inner tubes, and the lower outer tube is movably riveted with the lower ends of the two inner tubes.

8. The self-contained height-lowering, volume-increasing trailer of claim 1, wherein, The bottom frame comprises two inner side movably connected bottom frames, and the outer side of the bottom frame is movably connected with the lower horizontal tube on the front side or the rear side.

9. The self-contained height-lowering, volume-increasing trailer of claim 1, wherein, The lower horizontal tube on the front side is movably connected with a telescopic pull rod.

10. The self-loading, self-stowing, self-leveling trailer of claim 1, wherein, The roller on the front side is a universal wheel with a brake, or the roller on the rear side is a directional wheel.

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