Folding manual crane

Abstract

The utility model belongs to the technical field of cranes, and particularly relates to a folding manual crane which comprises a main body and a crane long arm, the main body comprises a main body steel beam, a bearing support plate and wheels, the bottom of the main body steel beam is fixedly connected with the bottom of the bearing support plate, and the wheels are arranged on two sides of a rotating shaft on the main body steel beam and the bearing support plate; the bottom end of the long crane arm is connected to the rotating shaft through a connecting piece, two cantilevers are arranged at the top end of the long crane arm, a pulley is arranged at the joint of the two cantilevers, and a lifting hook is arranged below the pulley; the crane long arm is matched with the main body to be used as a manual crane, so that the main body steel beam can be controlled to lift to link the crane long arm to lift materials, and the main body steel beam can also be fixed, a roller on the main body steel beam is controlled to contract a rope to lift materials on a lifting hook; the main body steel beam and the crane long arm are mutually folded and can also be independently used as a trolley. The dual-purpose machine has dual purposes and is not single in function, and the utilization rate of equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and in particular relates to a foldable manual crane. Background Art

[0002] The Chinese patent number CN 107298390 B discloses a household manual crane, which includes a base, a support vertical rod is arranged at the upper end of the base, and is characterized in that: a horizontal lever horizontal axis is arranged at the upper end of the support vertical rod, a lever telescopic mechanism is arranged in the lever horizontal axis, and a clamping device is arranged on one side of the lever telescopic mechanism. After the lever telescopic mechanism and the clamping device are arranged, the present invention is small in size and easy to carry. It can be easily carried at home, which brings convenience to people and increases practicality. It has a simple structure and is easy to use.

[0003] This patent is a traditional lifting mechanism with single function and low utilization rate. Utility Model Content

[0004] The utility model aims to provide a foldable manual crane, aiming to solve the technical problems of single function and low utilization rate in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides a foldable manual crane, comprising:

[0006] The main body includes a main steel beam, a bearing support plate, and wheels. The bottom of the main steel beam is fixedly connected to the bottom of the bearing support plate at a certain angle. A rotating shaft is also provided near the intersection of the main steel beam and the bearing support plate. The two ends of the rotating shaft penetrate the main steel beams on both sides. The two ends of the rotating shaft are rotatably connected to the wheels. A roller is provided at the upper end of the main steel beam. The roller is rotatably connected and fixed between the two sides of the main steel beam. A rope is provided on the roller.

[0007] A long crane arm, wherein a connecting piece is provided at the bottom end of the long crane arm, one end of the connecting piece is connected to the bottom end of the long crane arm, and the other end is rotatably sleeved on the rotating shaft, and two cantilevers are provided at the top end of the long crane arm, and the two cantilevers intersect at one place at a certain angle, and a pulley is also provided here to connect with the cantilever, and a hook is provided below the pulley, and the rope is connected to the hook from the roller to the pulley;

[0008] When the long arm of the crane is rotated and folded to the same plane as the main steel beam, the foldable manual lifting crane can be used as a manual trolley; when the long arm of the crane is folded and overlapped to the load-bearing pallet, the foldable manual lifting crane can be used as a crane.

[0009] Optionally, a cross bar is provided between the top ends of the main steel beams for connection and fixation.

[0010] Optionally, the long arm of the crane is centered on the rotating shaft, and the rotation angle range is from the main steel beam to the bearing support plate.

[0011] Optionally, two connecting members are provided, which are respectively sleeved on both ends of the rotating shaft.

[0012] Optionally, a rocker is provided on one end of the roller.

[0013] The above one or more technical solutions in the foldable manual crane provided by the embodiment of the utility model have at least one of the following technical effects: by adopting the design of the utility model, the main steel beam part of the main body and the long arm of the crane form a V-shaped lever structure, the main steel beam is used as a power rod, and the long arm of the crane is used as a resistance rod, and the roller is used to roll up or lower the hook to lift the material; and when not used for lifting, the long arm of the crane is folded and combined with the main steel beam, and can be used as an ordinary trolley. One object has two uses, and the utilization rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 A schematic diagram of the structure provided for an embodiment of the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of

[0017] Figure 3 for Figure 1 Another partial enlarged view B.

[0018] Among them, the reference numerals in the figure are:

[0019] 10. Main steel beam; 11. Load-bearing pallet; 12. Wheels; 13. Rotating shaft; 14. Roller; 141. Rocker; 15. Rope; 16. Crossbar; 20. Crane long arm; 20a. Connecting piece; 21. Cantilever; 22. Roller; 23. Hook. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0021] In the description of the embodiments of the present invention, it should be understood that if there are directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, inside, outside, etc., the directions or positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the embodiments of the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0023] In the embodiments of the present invention, unless otherwise clearly specified and limited, if there are terms such as "installed", "connected", "connected", "fixed", etc., they should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0024] In one embodiment of the present invention, Figures 1 to 3 As shown, a foldable manual crane is provided, including a main body and a crane long arm 20, the main body includes a main steel beam 10, a load-bearing pallet 11 and wheels 12, the bottom of the main steel beam 10 is fixedly connected to the bottom of the load-bearing pallet 11 at a certain angle, a rotating shaft 13 is also provided near the intersection of the main steel beam 10 and the load-bearing pallet 11, both ends of the rotating shaft 13 pass through the main steel beams 10 on both sides, both ends of the rotating shaft 13 are rotatably connected to the wheels 12, a roller 14 is provided at the upper end of the main steel beam 10, the roller 14 is rotatably connected and fixed between the two sides of the main steel beam 10, and a rope 15 is also provided on the roller 14.

[0025] It should be noted that the rotating shaft 13 can be arranged on the main steel beam 10 or at the junction of the main steel beam 10 and the bearing support plate 11. In this embodiment, the rotating shaft 13 is arranged on the main steel beam 10, and both ends of the rotating shaft 13 are respectively connected to the main steel beam 10. The crane arm 20 is rotatably connected to both ends of the rotating shaft 13, and the two wheels 12 are respectively connected to the rotating shaft 13. The crane arm 20 rotates a certain angle with the rotating shaft 13 as the hinge point.

[0026] A connecting piece 20a is provided at the bottom end of the crane arm 20, one end of the connecting piece 20a is connected to the bottom end of the crane arm 20, and the other end is rotatably sleeved on the rotating shaft 13. Two cantilevers 21 are provided at the top end of the crane arm 20, and the two cantilevers intersect at a certain angle, and a pulley 22 is also provided here to connect the two cantilevers 21 at the intersection, and a hook 23 is provided below the pulley 22. One end of the above-mentioned rope 15 is fixedly connected to the roller 14, and the hook 23 is connected from the roller 14 to the pulley 22. It should be understood here that the rope 15 is not limited to one material, and nylon rope or a high-strength and high-toughness composite material can be used.

[0027] When the crane arm 20 is rotated and folded to the load-bearing pallet 11, this utility model can be used as a crane, and there are two methods of use: first, the top end of the main steel beam 10 is manipulated to move up and down, thereby linking the crane arm 20 to rise or fall, and realizing the lifting function; second, the top end of the main steel beam 10 is lowered and fixed in advance, so that the top end of the crane arm 20 is raised and fixed, and then the roller 14 is operated to pull up or lower the hook 23 through the rope 15 to realize the lifting function; when the crane arm 20 is rotated and folded to the same plane as the main steel beam 10, this utility model can be used as an ordinary trolley.

[0028] Preferably, a cross bar 16 is also provided between the top portions of the main steel beam 10 to connect and fix them, thereby reinforcing the main structure and serving as a grip when operating the crane to lift and lower materials. That is, according to the above two methods, the main steel beam 10 is operated to link the crane's long arm 20 to lift or fix the main steel beam 10 and then operate the roller 14 to lift and lower materials.

[0029] Preferably, the crane arm 20 is centered on the rotating shaft 13, and the rotation angle range is from the main steel beam 10 to the bearing support plate 11; so that the crane arm 20 can move within this range, thereby forming two states: opened and folded.

[0030] Preferably, in one embodiment of the present invention, two connecting members 20a are provided, which are respectively sleeved on the two ends of the rotating shaft 13, and the crane arm 20 is rotatably connected to the rotating shaft 13 through the connecting member 20a, so that the crane arm 20 can rotate around the rotating shaft 13. The connecting member 20a can also be a bearing, or a component with the function of connecting and rotating two parts. Of course, since this rotating connection method and parts are prior art, they are not described in detail.

[0031] Preferably, a rocker 141 is provided at one end of the roller 14 for adjusting the rotation of the roller 14, contracting or extending the rope, and thus controlling the height of the lifted material.

[0032] Working principle: when it is necessary to lift materials, the main steel beam 10 is fixed on the ground, the long arm 20 of the crane is folded and rotated to the load-bearing pallet 11, and then the hook 23 hooks the material, with the wheel 12 as the support point, the main steel beam 10 as the power arm, and the long arm 20 of the crane as the resistance arm, to lift or lower the material. Specifically, first, the cross bar 16 of the main steel beam 10 is manipulated to link the long arm 20 of the crane to lift the material on the hook 23; second, the cross bar 16 of the main steel beam 10 is manipulated to fix the main steel beam 10 in advance, and the rocker 141 is manipulated to move to drive the roller 14 to rotate, and the rope 15 is retracted and released, thereby lifting and lowering the material on the hook 23; when the long arm 20 of the crane is folded to the main steel beam 10, this utility model can be used as an ordinary trolley.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable manual crane, characterized in that: include: A main body, the main body comprising a main steel beam (10), a bearing support plate (11), and wheels (12); the bottom of the main steel beam (10) is fixedly connected to the bottom of the bearing support plate (11) at a certain angle; a rotating shaft (13) is also provided near the intersection of the main steel beam (10) and the bearing support plate (11); both ends of the rotating shaft (13) penetrate the main steel beam (10) on both sides; both ends of the rotating shaft (13) are rotatably connected to the wheels (12); a roller (14) is provided at the upper end of the main steel beam (10); the roller (14) is rotatably connected and fixed between the two sides of the main steel beam (10); and a rope (15) is provided on the roller (14); A crane arm (20), wherein a connecting piece (20a) is provided at the bottom end of the crane arm (20), one end of the connecting piece (20a) is connected to the bottom end of the crane arm (20), and the other end is rotatably sleeved on the rotating shaft (13), and two cantilevers (21) are provided at the top end of the crane arm (20), and the two cantilevers (21) intersect at a certain angle at one point, and a pulley (22) is also provided at this point to connect with the cantilever (21), and a hook (23) is provided below the pulley (22), and the rope (15) is connected from the roller (14) to the pulley (22) to the hook (23); When the long arm (20) of the crane is rotated and folded to the same plane as the main steel beam (10), the foldable manual lifting crane can be used as a manual trolley; when the long arm (20) of the crane is folded and overlapped to the bearing pallet (11), the foldable manual lifting crane can be used as a crane.

2. The foldable manual crane according to claim 1, characterized in that: A cross bar (16) is also provided between the top ends of the main steel beams (10) for connection and fixation.

3. The foldable manual crane according to claim 2, characterized in that: The crane long arm (20) is centered on the rotating shaft (13), and the rotation angle range is from the main steel beam (10) to the bearing support plate (11).

4. The foldable manual crane according to claim 1, characterized in that: The connecting members (20a) are provided with two and are respectively sleeved on the two ends of the rotating shaft (13).

5. The foldable manual crane according to claim 1, characterized in that: A rocker (141) is provided on one end of the roller (14).

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