CN205440407U - Folding building dolly of climbing - Google Patents

Abstract

The utility model relates to a foldable stair-climbing trolley, which comprises a support frame; the upper end of the support frame is provided with a rotatable handle which is positioned by a spring pin, and combined wheels are respectively arranged on both sides of the lower end; the combined wheels include three Two runners evenly distributed in the circumferential direction and a support frame connecting the three runners; the two sides of the upper end of the support frame are respectively provided with connecting rods connected by hinges; the other ends of the two connecting rods are respectively connected with the loading Box connection; the utility model not only avoids the vehicle frame hitting the heel by setting a foldable handle on the support frame, but also saves energy by using the principle of leverage, thereby improving the handling efficiency.

Description

A foldable stair climbing trolley

technical field

The utility model relates to the field of daily life, in particular to a foldable stair climbing trolley.

Background technique

The prior art 201420588150.4 discloses a portable stair-climbing trolley, which includes an L-shaped frame. There is a wheel axle outside the bending part of the frame. An outer wheel is arranged at both ends of the wheel axle. The outer wheel consists of four/arc Structural composition, there is a hub in the outer wheel, the hub is hinged with four/arc structures through four outer shafts, and the connecting part is provided with a gear lever, and a hook is arranged on the outer shaft, one end of the hook is connected to the outer shaft, and the other end is connected to the corresponding One end of the /arc structure, the spring connects the hook and the gear lever; because the outer wheel is set at the bending part of the L-shaped frame, it is easy to hit the heel when using it, causing danger, and the gravity of the goods is easy to concentrate on the frame during transportation For this reason, we have developed a foldable stair climbing trolley. By setting a foldable handle on the support frame, it can not only prevent the frame from hitting the heel, but also use the lever to The principle can save effort, thus improving the handling efficiency.

Utility model content

The purpose of the utility model is to provide a foldable stair-climbing trolley in order to overcome the deficiencies of the prior art. By setting a foldable handle on the support frame, not only can the frame be prevented from hitting the heel, but also energy can be saved by utilizing the principle of leverage. , thereby improving the handling efficiency.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a foldable stair climbing trolley, including a support frame; the upper end of the support frame is provided with a handle that can be rotated and positioned by a spring pin, and the two sides of the lower end are respectively provided with There are combined wheels; the combined wheels include three runners evenly distributed in the circumferential direction and a support frame connecting the three runners; the two sides of the upper end of the support frame are respectively provided with connecting rods connected by hinges; The other end of above-mentioned connecting rod is connected with packing box respectively.

Preferably, the handle is as long as the support frame.

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art:

The foldable stair-climbing trolley described in the utility model can not only prevent the vehicle frame from colliding with the heels by providing foldable handles on the support frame, but also save energy by using the principle of leverage, thereby improving the handling efficiency.

Description of drawings

Below in conjunction with accompanying drawing, technical scheme of the utility model is further described:

Accompanying drawing 1 is the working schematic diagram of the collapsible stair-climbing trolley described in the utility model.

Among them: 1. Support frame; 2. Loading box; 3. Connecting rod; 4. Handle; 5. Combined wheel.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Accompanying drawing 1 is the collapsible stair-climbing trolley described in the utility model, comprises support frame 1; The upper end of described support frame 1 is provided with the handle 4 that is rotatable and isometric with support frame 1, and purpose is in the situation that is easy to carry The length of the handle 4 is maximized, which saves energy through the principle of leverage during transportation. The two sides of the lower end of the support frame 1 are respectively provided with combined wheels 5; the combined wheels 5 include three runners evenly distributed in the circumferential direction and connecting The support frame of three runners; the support frame 1 and the handle 4 are correspondingly provided with spring pins and pin holes for adjusting the angle between the support frame 1 and the handle 4, which is convenient for people of different ages to use; the support Both sides of the upper end of the frame 1 are respectively provided with connecting rods connected by hinges; the other ends of the two connecting rods are respectively connected with the loading box 2 for storing goods.

When in use: the handle 4 is rotated at an appropriate angle relative to the support frame 1 through the cooperation of the spring pin and the pin hole. Since the length of the support frame 1 and the handle 4 are the same, the leverage principle can save energy when transporting goods.

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art:

The foldable stair-climbing trolley described in the utility model can not only prevent the vehicle frame from colliding with the heels by providing foldable handles on the support frame, but also save energy by using the principle of leverage, thereby improving the handling efficiency.

The above are only specific application examples of the utility model, and do not constitute any limitation to the protection scope of the utility model. All technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the utility model.

Claims (2)

1. A foldable stair-climbing trolley, characterized in that: it comprises a support frame; the upper end of the support frame is provided with a handle that is rotatable and positioned by a spring pin, and the lower end both sides are respectively provided with combined wheels; the combined wheels It includes three runners evenly distributed in the circumferential direction and a support frame connecting the three runners; the two sides of the upper end of the support frame are respectively provided with connecting rods connected by hinges; the other ends of the two connecting rods are respectively connected to the Cargo box connection. 2. The foldable stair climbing trolley according to claim 1, wherein the handle is as long as the support frame.