Manual crawling ladder push-pull vehicle

Abstract

The utility model discloses a manual ladder stand push-pull vehicle which is provided with a push-pull vehicle body steel frame, the push-pull vehicle body steel frame comprises a push-pull vehicle back plate which is fixedly connected through a plurality of push-pull vehicle back plate ribs, push-pull vehicle wheels are installed on the two sides of the push-pull vehicle body steel frame through wheel fixing shafts, and the push-pull vehicle back plate is fixedly connected with the push-pull vehicle body steel frame. A push-pull vehicle bottom plate and a fixing corner connector are installed on the two sides of the push-pull vehicle back plate respectively, and ladder stand roller assemblies are installed on the two sides of the fixing corner connector through roller bearings. And meanwhile, in the face of slope topography, ladder stand rollers are matched with push-pull vehicle wheels, so that more labor-saving transportation can be achieved, and through the design of the brake wire harness, the push-pull vehicle can be suddenly stopped and braked in the downhill road section, and the phenomenon that the push-pull vehicle is out of control is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to cargo transportation technical field especially relates to a hand operated cat ladder push -pull cart. BACKGROUND

[0002] In the construction production process, when the construction materials need to climb the ladder without vertical transportation equipment, the original carrying mode can only use manpower to transport, especially in the field of building engineering, when the multi-storey or high-rise building is under construction, there is no tower crane, construction elevator, winch or has not been installed in place, the construction materials of two floors and above need to be carried upstairs, at this time, in order to improve the construction efficiency, the original manpower carrying is replaced by the cat ladder push -pull cart, the work efficiency is greatly improved, and the overall construction progress is improved, the cat ladder push -pull cart in the prior art usually adopts the star wheel, but the size of the star wheel is usually small due to the height of each step of the stairs, the cat ladder push -pull cart cannot carry and transport the heavy objects in the building engineering, and cannot cope with the pits and other construction environments when carrying on the flat ground. UTILITY MODEL CONTENTS

[0003] The utility model patent aims at solving the defects in the prior art, and provides a hand operated cat ladder push -pull cart to solve the technical problems that the cat ladder push -pull cart in the prior art cannot be used in the construction site environment and cannot carry the construction heavy objects to climb the ladder.

[0004] In order to solve the above technical problems, the utility model adopts the technical scheme of a hand operated cat ladder push -pull cart, which has a push -pull cart body steel frame, the push -pull cart body steel frame includes a push -pull cart back plate fixedly connected through a plurality of push -pull cart back plate ribs, push -pull cart wheels are installed on both sides of the push -pull cart body steel frame through wheel fixing shafts, a push -pull cart bottom plate and a fixed angle code are installed on both sides of the push -pull cart back plate respectively, and cat ladder roller assemblies are installed on both sides of the fixed angle code through roller bearings.

[0005] Preferably, a telescopic rod is installed in the push -pull cart body steel frame, a fastening screw clamp is arranged on the telescopic rod, and a plurality of fixed buckles are arranged on the push -pull cart body steel frame.

[0006] Preferably, a brake handle is further arranged on the push -pull cart body steel frame, and the brake handle is connected with the roller bearing through a brake wire harness.

[0007] Preferably, the cat ladder roller assembly includes roller support frames installed on both sides of the roller bearing, cat ladder rollers are installed at both ends of the roller support frame respectively, and the roller support frame rotates around the roller bearing.

[0008] Preferably, the push -pull cart back plate is hingedly connected with the push -pull cart bottom plate on the side surface, the push -pull cart back plate and the push -pull cart bottom plate form an L-shaped structure, and two foldable bottom plate folding supports are further installed between the push -pull cart back plate and the push -pull cart bottom plate.

[0009] Preferably, the push-pull car body steel frame is provided with a connecting plate on both sides of the fixed angle code, and a push-pull car wheel is installed on the connecting plate through a wheel fixing shaft corresponding to the ladder roller.

[0010] Preferably, the push-pull car body steel frame is provided with an elastic rope, and a matching clamping groove is provided on the push-pull car bottom plate, and the elastic rope cooperates with the clamping groove to bind the goods.

[0011] The utility model has the advantages of:

[0012] The double-head ladder roller and the push-pull car wheel cooperate to transport heavy construction materials on complex road sections such as construction site or stone road pothole sections, have good transportation capacity, can transport more labor-saving when facing slope terrain, and can avoid out-of-control of the push-pull car through the brake wire harness design. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be further described below in combination with the drawings and examples:

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is the back view of the utility model;

[0016] Figure 3 It is the side view of the utility model;

[0017] Figure 4 It is the detail schematic view of the utility model;

[0018] Wherein: 1, brake handle; 2, fastening screw clamp; 3, push-pull car back plate; 4, brake wire harness; 5, push-pull car back plate rib; 6, push-pull car wheel; 7, wheel fixing shaft; 8, push-pull car body steel frame; 9, ladder roller; 10, roller bearing; 11, roller support frame; 12, fixed buckle; 13, push-pull car bottom plate; 14, bottom plate folding support frame; 15, fixed angle code. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings and examples:

[0020] As Figures 1-4As shown, a hand-operated stair climbing trolley has a trolley body steel frame 8, which comprises a trolley back plate 3 fixedly connected through a plurality of trolley back plate plate ribs 5, and a trolley wheel 6 installed through a wheel fixing shaft 7 on both sides of the trolley body steel frame 8. A trolley bottom plate 13 and a fixed angle code 15 are respectively installed on both sides of the trolley back plate 3, and a stair climbing roller assembly is installed through a roller bearing 10 on both sides of the fixed angle code 15. In this embodiment, the trolley body steel frame 8 is a square hollow frame, and a plurality of trolley back plate plate ribs 5 are arranged in the trolley body steel frame 8. The trolley back plate plate ribs 5 can be fixedly connected through welding or bolts. The trolley back plate 3 is welded on the surface of the trolley back plate plate ribs 5. The trolley wheel 6 is installed through the wheel fixing shaft 7 on both sides of the trolley body steel frame 8. This is a conventional scheme in the field. The trolley bottom plate 13 and the fixed angle code 15 are respectively installed on the front and back sides of the trolley back plate 3. The trolley bottom plate 13 is installed below one side of the trolley back plate 3 to form an L-shaped structure with the trolley bottom plate 13 for placing goods. The fixed angle code 15 is installed on the side of the trolley back plate 3 away from the trolley bottom plate 13. The roller bearing 10 is installed on both sides of the fixed angle code 15 for installing the roller assembly.

[0021] Preferably, a telescopic rod is installed in the trolley body steel frame 8, and a fastening screw is arranged on the telescopic rod. A plurality of fixed buckles 12 are arranged on the trolley body steel frame 8. In this embodiment, the trolley body steel frame 8 comprises a mouth-shaped frame connected by two horizontal and two vertical steel strips. A telescopic pipe is installed in the vertical steel strip. The telescopic pipe is connected through a horizontal rod to adjust and fix the length of the trolley body steel frame 8. Meanwhile, the telescopic rod can also be replaced by a threaded telescopic pipe in the prior art.

[0022] Preferably, a brake handle 1 is arranged on the trolley body steel frame 8, and the brake handle 1 is connected to the roller bearing 10 through a brake wire harness 4. In this embodiment, the brake handle 1 drives the brake wire harness 4 to brake the roller bearing 10 by pressing, thereby driving the stair climbing roller assembly to stop moving.

[0023] Preferably, the stair climbing roller assembly comprises a roller support frame 11 installed on both sides of the roller bearing 10, and a stair climbing roller 9 is respectively installed at both ends of the roller support frame 11. The roller support frame 11 rotates around the roller bearing 10. Compared with the stair climbing roller 9 arranged in the three-wheel structure in the prior art, the roller support frame 11 is installed on the roller bearing 10, and the stair climbing roller 9 is installed at both ends of the roller support frame 11. The stair climbing roller 9 can be connected to both ends of the roller support frame 11 by clamping or embedding a universal wheel. The two-wheel structure is simpler and has lower cost. Meanwhile, the trolley wheel 6 is more stable and labor-saving in transportation on flat ground.

[0024] Preferably, the side of the pull cart back plate 3 is connected with the pull cart bottom plate 13 through a hinged connection, the pull cart back plate 3 and the pull cart bottom plate 13 form an L-shaped structure, and two foldable bottom plate folding supports 14 are installed between the pull cart back plate 3 and the pull cart bottom plate 13. In this embodiment, the pull cart back plate 3 is hinged with the pull cart bottom plate 13, so that the pull cart bottom plate 13 can be flipped along the pull cart back plate 3, and can be folded when not in use. Meanwhile, the bottom plate folding supports 14 are arranged on both sides of the top of the pull cart bottom plate 13 to increase the stability of the pull cart bottom plate 13. In order to ensure smooth folding, the bottom plate folding supports 14 are telescopic rods, which are synchronously retracted when the pull cart bottom plate 13 is flipped upwards.

[0025] Preferably, the pull cart body steel frame 8 is provided with a connecting plate on both sides towards the fixed angle bracket 15, and the pull cart wheel 6 is installed on the connecting plate through the wheel fixing shaft 7 corresponding to the ladder roller 9. In this embodiment, the pull cart wheel 6 is moved backwards, as shown in the figure, two connecting plates are arranged on both sides of the pull cart body steel frame 8 extending towards the fixed angle bracket 15, and the pull cart wheel 6 is installed on the connecting plate. The effect is that the pull cart wheel 6 corresponds to the position of the ladder roller 9, and the pull cart wheel 6 moves synchronously with the ladder roller 9 during ladder carrying, which is more labor-saving. In the traditional setting, the position of the ladder roller 9 is behind the pull cart bottom plate 13, and only the ladder roller 9 contacts with the stairs when the whole pull cart is tilted during ladder carrying. In this embodiment, the pull cart wheel 6 is moved backwards to move synchronously with the ladder roller 9 during carrying. Figure 3

[0026] Preferably, the pull cart body steel frame 8 is further provided with an elastic rope, and the pull cart bottom plate 13 is provided with a matching clamping groove. The elastic rope cooperates with the clamping groove to bind the goods. In this embodiment, the elastic rope is installed on the pull cart body steel frame 8 after loading to prevent the goods from falling off, and a matching clamping groove is arranged on the pull cart bottom plate 13 to bind the goods through the elastic rope clamping groove. Meanwhile, the elastic rope can also be used to fix the folded pull cart bottom plate 13.

[0027] The specific working method of the present application is as follows: when in use, the goods are loaded on the pull cart bottom plate 13 for stacking, and the pull cart wheel 6 and the ladder roller 9 move synchronously during transportation. When climbing the ladder, the pull cart body is tilted to make the pull cart wheel 6 and the ladder roller 9 contact with the stairs, and then the pull cart is manually pushed and pulled. When the pull cart slides down too fast on the slope, the roller bearing 10 in operation is effectively and urgently braked through the brake wire harness 4.

[0028] ​The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as limiting the present application, and the protection scope of the present application should be the technical solutions recited in the claims, including the equivalent replacement solutions of the technical features recited in the claims as the protection scope. That is, the equivalent replacement improvements within the scope are also within the protection scope of the present application.

Claims

1. A hand operated ladder dolly having a dolly body frame (8) characterised in that, The push-pull car body steel frame (8) includes a push-pull car back plate (3) fixedly connected through a plurality of push-pull car back plate ribs (5), the push-pull car body steel frame (8) is provided with a push-pull car wheel (6) installed through a wheel fixing shaft (7) on both sides, the push-pull car back plate (3) is respectively provided with a push-pull car bottom plate (13) and a fixed angle code (15) on both sides, and the fixed angle code (15) is provided with a ladder roller assembly on both sides through a roller bearing (10).

2. A hand operated ladder scooter according to claim 1 wherein, The push-pull car body steel frame (8) is provided with a plurality of fixed buckles (12).

3. The hand operated ladder dolly according to claim 1, wherein The push-pull car body steel frame (8) is further provided with a brake handle (1), and the brake handle (1) is connected with the roller bearing (10) through a brake wire harness (4).

4. The hand operated ladder dolly according to claim 1, wherein The ladder roller assembly includes a roller support frame (11) installed on both sides of the roller bearing (10), and the roller support frame (11) is respectively provided with a ladder roller (9) at both ends.

5. The hand operated ladder dolly according to claim 1, wherein The push-pull car back plate (3) is hingedly connected with a push-pull car bottom plate (13) on the side, and the push-pull car back plate (3) and the push-pull car bottom plate (13) form an L-shaped structure, and two foldable bottom plate folding supports (14) are further installed between the push-pull car back plate (3) and the push-pull car bottom plate (13).

6. A hand operated ladder scooter as claimed in claim 4 wherein, The push-pull car body steel frame (8) is provided with a connecting plate on both sides towards the fixed angle code (15), and the connecting plate is provided with a push-pull car wheel (6) installed through a wheel fixing shaft (7) at a position corresponding to the ladder roller (9).

7. The hand operated ladder dolly according to claim 1, wherein The push-pull car body steel frame (8) is further provided with an elastic rope, the push-pull car bottom plate (13) is provided with a matching clamping groove, and the elastic rope cooperates with the clamping groove to bind goods.

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