Portable crawling ladder material trolley

Abstract

The utility model provides a portable crawling ladder material trolley which comprises a side frame and a bottom frame, the bottom of the side frame is rotationally connected with the front side of the bottom frame, crawling ladder wheels are installed at the two ends of the front side of the bottom frame, a concave net-shaped bearing frame is fixedly installed on the bottom frame, and the rear side of the bottom frame is bent downwards and provided with sliding wheels. The side frames and the bottom frame are each provided with a fixing component used for fixing materials, foldable connecting components are symmetrically installed between the side frames and the bottom frame, the trolley is simple in structure, small in size, light in weight, small in occupied space after being folded and convenient to store and carry, meanwhile, the positions of the materials can be further limited, the materials are prevented from sliding off in the carrying process, and the trolley is convenient to use. And the stair-climbing carrying efficiency of the materials is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to material handling technical field, especially portable ladder material trolley. BACKGROUND

[0002] Ladder material trolley, namely, stair climbing trolley, it combines the function of conventional trolley and climbing stairs, is a kind of equipment for transporting heavy on stairs.

[0003] The patent with the authorized announcement number CN206579675U discloses a kind of foldable stair climbing power-assisted small trailer, the small trailer includes pull rod and bottom plate, two ladder wheels are installed on the front side of bottom plate, bottom plate is pulled by pull rod, and it is carried by climbing stairs under the action of ladder wheel.The small trailer has the following deficiencies in the process of actual use:

[0004] First, the bottom plate of small trailer is smooth and has no fixed component, which easily causes the material to slide down during the process of climbing stairs, so workers need to collect and arrange again, greatly increasing the workload of workers and reducing the efficiency of material climbing stairs;

[0005] Second, the structure of small trailer is complex, which easily causes wear and tear, increasing the cost of maintenance and replacement;

[0006] Third, there is no connecting component between pull rod and bottom plate of small trailer, so the stability is poor, which easily causes the material to overturn and fall during the process of carrying due to shaking or tilting, and even the small trailer can be damaged. INVENTION CONTENTS

[0007] The utility model aims at solving the technical deficiency of the above, and provides a kind of portable ladder material trolley.

[0008] Therefore, the utility model provides a kind of portable ladder material trolley, including side frame and chassis, the bottom of side frame is rotatably connected with the front side of chassis, two ends of the front side of chassis are installed with ladder wheel, the recessed net-shaped bearing frame is fixedly installed on the chassis, the rear side of chassis is downwardly bent and installed with pulley, the side frame and the chassis are all installed with the fixed component for fixing material, and the symmetrical connecting component of foldable is installed between the side frame and the chassis.

[0009] Preferably, the fixed component includes bandage and lug, the lug is fixedly installed on the side frame and the chassis, and the bandage is passed through the lug to bind the material.

[0010] Preferably, the connecting component includes connecting rod one and connecting rod two, one end of connecting rod one is rotatably connected with the side frame, the other end is rotatably connected with connecting rod two, and the other end of connecting rod two is rotatably connected with the chassis.

[0011] Preferably, the connecting rod two is fixedly installed with a limiting block close to one side of the connecting rod one, and the limiting block is used for limiting the folding direction of the connecting rod one.

[0012] Preferably, the rotating holes at the two ends of the connecting rod one and the connecting rod two are all waist-shaped holes.

[0013] Preferably, the hub is rotatably installed on the bottom frame, and a plurality of the ladder wheels are rotatably installed on the hub.

[0014] Preferably, the plurality of the ladder wheels are in an equilateral triangle structure.

[0015] Preferably, the number of the pulleys is two, and the distance between the two pulleys is less than the distance between the two hubs.

[0016] Preferably, the side frame is bent forward multiple times, and the binding belt is arranged at one of the bent positions.

[0017] Preferably, the ladder wheel is made of aluminum alloy.

[0018] The portable ladder material trolley has the following beneficial effects.

[0019] (1) The bottom frame is installed with a concave net-shaped bearing plate, which can better limit the material, prevent the material from falling during the climbing process, and further reduce the weight of the trolley and save production cost;

[0020] (2) The fixed components are arranged on the side frame and the bottom frame, and the binding belt is tied to the corresponding lug according to actual needs during the climbing and carrying process of the material, so that the position of the material is fixed, the material is prevented from falling, the efficiency of the material climbing and carrying is greatly improved, and the workload of the workers is reduced;

[0021] (3) The connecting component is arranged between the side frame and the bottom frame, which improves the stability of the connection between the side frame and the bottom frame, strengthens the lateral support of the trolley, prevents the instability phenomenon caused by shaking or tilting of the trolley during the carrying process, and avoids damage to the trolley;

[0022] (4) The trolley has a simple operation method, which can be easily operated by workers manually, is simple and easy to learn, can be easily used by people without relevant experience, has a simple structure, a small size, a light weight, and does not need to occupy too much space after folding, and is convenient to store and carry. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the portable ladder material trolley in the embodiment;

[0024] Figure 2 isFigure 1 A magnified view of part A in the middle.

[0025] The markings in the diagram are: 1. Side frame; 2. Base frame; 3. Ladder wheel; 4. Bearing frame; 5. Pulley; 6. Fixing component; 61. Strap; 62. Hanging lug; 7. Connecting component; 71. Connecting rod one; 72. Connecting rod two; 8. Limiting block; 9. Waist-shaped hole; 10. Wheel hub. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0027] Example:

[0028] like Figures 1-2 As shown, this utility model provides a portable ladder material cart, including a side frame 1 and a base frame 2. The bottom of the side frame 1 is rotatably connected to the front of the base frame 2 for easy folding and storage. Ladder wheels 3 are installed at both ends of the front of the base frame 2. A recessed mesh support frame 4 is fixedly installed on the lower part of both the base frame 2 and the side frame 1, which can not only effectively limit the position of the material, but also further reduce the weight of the cart, save costs, and facilitate handling. The rear side of the base frame 2 is bent downward and equipped with a pulley 5. The bottom of the pulley 5 is on the same horizontal plane as the bottom of the ladder wheel 3, which facilitates material handling on flat ground. Fixing components 6 for fixing materials are installed on both the side frame 1 and the base frame 2. Foldable connecting components 7 are symmetrically installed between the side frame 1 and the base frame 2.

[0029] Furthermore, the fixing component 6 includes a strap 61 and a hook 62. The hook 62 is fixedly installed on the side frame 1 and the base frame 2, and the strap 61 passes through the hook 62 to bind the material. The hooks 62 are symmetrically installed on both the side frame 1 and the base frame 2. This facilitates the selection of a suitable hook 62 for fixing during binding, resulting in a good fixing effect. On the other hand, it also allows for the storage of unused straps 61 to prevent loss.

[0030] Furthermore, the connecting component 7 includes a first connecting rod 71 and a second connecting rod 72. One end of the first connecting rod 71 is rotatably connected to the side frame 1, and the other end is rotatably connected to the second connecting rod 72. The other end of the second connecting rod 72 is rotatably connected to the base frame 2. Multiple rotatable connections allow the connecting component 7 to fold synchronously when the trolley is folded, without affecting the folding operation of the trolley.

[0031] Further, the connecting rod two 72 is fixedly installed with a limiting block 8 close to one side of the connecting rod one 71, the limiting block 8 is used for limiting the folding direction of the connecting rod one 71, so that the connecting rod one 71 can only be folded downward for storage, and cannot be folded upward, and the storage effect is good.

[0032] Further, the rotating holes at both ends of the connecting rod one 71 and the connecting rod two 72 are all waist-shaped holes 9. Compared with circular holes, the waist-shaped holes 9 have greater deformation and adjustment space, allowing the connecting rod one 71 and the connecting rod two 72 to be fine-tuned and positioned within a certain range, being more flexible and having higher adaptability.

[0033] Further, the bottom frame 2 is rotatably installed with a hub 10, and a plurality of the ladder wheels 3 are rotatably installed on the hub 10. The rotation of the hub 10 drives the plurality of ladder wheels 3 to rotate synchronously, which is more convenient for climbing stairs.

[0034] Further, the three ladder wheels 3 are in an equilateral triangle configuration, and the stress is more uniform and the stability is strong.

[0035] Further, the number of the pulleys 5 is two, and the distance between the two pulleys 5 is less than the distance between the two hubs 10. The design of the wide hub 10 can enhance the structural strength and stability of the trolley, bear larger load, and the width between the rear pulleys 5 is reduced, which can save space and reduce weight, and also enhance the flexibility during trolley turning, adapt to different stair angles and widths.

[0036] Further, the side frame 1 is bent forward multiple times, and the binding belt 61 is arranged at one of the bent positions, so as to facilitate the storage of the binding belt 61 and not occupy the folding space of the bottom frame 2. The top of the side frame 1 is bent forward to serve as a handle, facilitating workers to pull the trolley.

[0037] Further, the ladder wheels 3 are made of aluminum alloy, and have good climbing performance, wear resistance, environmental adaptability, mechanical reliability and obstacle crossing ability.

[0038] The working principle is as follows:

[0039] Place the materials on the bearing frame 4 of the bottom frame 2, untie the binding belt 61, pass it through the corresponding lug 62 to fix the materials, and then pull the top of the side frame 1 to climb the stairs under the action of the ladder wheels 3.

[0040] When the trolley is not used, the bottom frame 2 can be folded upward, and the connecting rod one 71 and the connecting rod two 72 are folded downward synchronously for storage, which occupies small space and is convenient for storage and carrying.

[0041] In the description of the utility model, need understanding is, the term "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "intermediate" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the indicated device or element must have a specific orientation, a specific orientation structure and operation, therefore it cannot be understood as a limitation on the utility model.

[0042] The above-mentioned is only a specific embodiment of the utility model, and cannot limit the range of the utility model, so the replacement of equivalent components or equivalent changes and modifications made in the protection range of the utility model patent should still belong to the scope covered by the claims of the utility model.

Claims

1. A portable ladder material trolley, comprising a side frame (1) and a bottom frame (2), the bottom of the side frame (1) is rotatably connected with the front side of the bottom frame (2), ladder wheels (3) are installed at both ends of the front side of the bottom frame (2), characterized in that, The bottom frame (2) is fixedly installed with a concave net-shaped bearing frame (4), the rear side of the bottom frame (2) is downwardly bent and installed with a pulley (5), the side frame (1) and the bottom frame (2) are both installed with a fixing component (6) for fixing materials, and the side frame (1) and the bottom frame (2) are symmetrically installed with a foldable connecting component (7).

2. A portable material ladder dolly according to claim 1, wherein, The fixing component (6) comprises a bandage (61) and an ear (62), the ear (62) is fixedly installed on the side frame (1) and the bottom frame (2), and the bandage (61) passes through the ear (62) to bind materials.

3. The portable material ladder dolly of claim 1, wherein, The connecting component (7) comprises a connecting rod one (71) and a connecting rod two (72), one end of the connecting rod one (71) is rotationally connected with the side frame (1), the other end is rotationally connected with the connecting rod two (72), and the other end of the connecting rod two (72) is rotationally connected with the bottom frame (2).

4. A portable material ladder dolly according to claim 3, wherein, The connecting rod two (72) is fixedly installed with a limiting block (8) on one side close to the connecting rod one (71), and the limiting block (8) is used for limiting the folding direction of the connecting rod one (71).

5. The portable material ladder dolly of claim 3, wherein, The rotation holes of the two ends of the connecting rod one (71) and the connecting rod two (72) are both waist-shaped holes (9).

6. The portable material ladder dolly of claim 1, wherein, The bottom frame (2) is rotationally installed with a hub (10), and the hub (10) is rotationally installed with a plurality of ladder wheels (3).

7. A portable material ladder dolly according to claim 6, wherein, The plurality of ladder wheels (3) are in an equilateral triangle structure.

8. The portable material ladder dolly of claim 6, wherein, The number of the pulleys (5) is two, and the distance between the two pulleys (5) is less than the distance between the two hubs (10).

9. The portable material ladder dolly of claim 2, wherein, The side frame (1) is forwardly bent multiple times, and the bandage (61) is arranged at one of the bent positions.

10. The portable material ladder dolly of claim 1, wherein, The ladder wheel (3) is made of aluminum alloy.

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